14 best emb equalizers

Product description

Innovative technologies: a sophisticated technology, applications for various long-term maintenance-free performance. magnetic isolation transformer, electronically balanced / unbalanced inputs and servo balanced / unbalanced output, input and output are equipped with radio frequency finer and turn off the power of hard-line relay bypass and 2 seconds of power-delay, so that engineers can ensure the compatibility of various installed. Products in production use only the best components, so there ts 10Hz to SOKHz frequency response, greater than 90dB signal to noise ratio (reference level to +40). less than 0.006% total harmonic distortion + noise (1kHz at *4 dBu). and from 20Hz to 20kHz than-eOdB crosstalk between channels. Selectable boost / cut ranges: ± 6dB and ± 15d8. electronic balanced / unbalanced Inputs, servo balanced / unbalanced output. Input and output are equipped with radio frequency filter XLR. row-like terminal blocks, and 1/4 *TRS interlaces.- 12dB / + 12 dB input gain range, l8dB / octavo 40Hz Bessel low frequency switching fitter, chassis / signal ground lift capability, built-in power supply, turn off the power re

• Innovative technologies: a sophisticated technology, applications for various long-term maintenance-free performance. magnetic isolation transformer, electronically balanced / unbalanced inputs and servo balanced / unbalanced output, input and output are equipped with radio frequency finer and turn off the power of hard-line relay bypass and 2 seconds of power-delay, so that engineers can ensure the compatibility of various installed. Products in production use only the best components, so there ts 10Hz to SOKHz frequency response, greater than 90dB signal to noise ratio (reference level to +40). less than 0.006% total harmonic distortion + noise (1kHz at *4 dBu). and from 20Hz to 20kHz than-eOdB crosstalk between channels. Selectable boost / cut ranges: ± 6dB and ± 15d8. electronic balanced / unbalanced Inputs, servo balanced / unbalanced output. Input and output are equipped with radio frequency filter XLR. row-like terminal blocks, and 1/4 *TRS interlaces.- 12dB / + 12 dB input gain range, l8dB / octavo 40Hz Bessel low frequency switching fitter, chassis / signal ground lift capability, built-in power supply, turn off the power re
• Input Interlace: 1 / 4 inch TRS. XLR sockets (two feet for the hot side is the female head), and terminal strips
• CMRR;> 40dB. typically» 55dB. 1KHz
• CMRR 18d8u. balanced / unbalanced (connected 6000 load)
• Range (concealed): Select ± 6dB or ± 15dB fader upgrade/Attenuation Range /

User questions & answers

Question:	Is this product a rebranded dbx 1231 dual channel graphic equalizer? everything in the front and back looks identical
Answer:	Make your sound very smooth!
Question:	does it work in the car
Answer:	If you have 110V AC in your car it will.
Question:	Can it be hooked up to a reciever with a pre amp connection
Answer:	yes. That’s the best way.
Question:	can i hook up the emb eb731 eq to a rockville rpa7000 hybryd mixing karaoke amp. if so what cables do i need
Answer:	If you have a processed loop or tape monitor loop do not hook up between amp and speakers you could go between mic and unit. Input and outputs of EQ are 1/4" jacks not RCA

Product description

Product Highlights: Most equalizers used for live sound mixing will allow you to affect frequencies across a variable frequency range. In general, if you’re trying to tune a sound by emphasizing desirable frequencies or pulling back less important frequencies, then you’ll be better off keeping the bandwidth fairly broad. On the other hand, if you’re trying to notch out hum, tame hiss, or carve out some other unwanted sound, then you’ll preserve your overall sound better by narrowing in on the frequencies you want to remove. Once you get into the world of digital mixers, studio-style fully parametric EQs become more common. These equalizers not only allow you to adjust the center frequencies of the mid bands, but they also allow you to dial in the bandwidth to make precise alterations to your sound, boosting board frequency ranges for added warmth or notching out an annoying resonance at 1.5kHz. While this surgical precision can be incredibly useful, it’s important not to get mired in minutia that can take up time you simply don’t have in live music production. That's why we are introducing our best Spectrum Equalizer for the price. It's an all around EQ's that everybody love. Great Sound! Great Light! Technical Details: Dual 10 Bands EQ With Blue LED Four Audio Source Line Input 4 RCA line input 2 RCA line Output Removable Rack Mount Brackets Spectrum Graphic Display Screen 110V/220V Switchable Power Source Dimensions: 16.9'' x 9.3'' x 2''

• Ten Bands of graphic EQ per Channel
• Multi-colored spectrum analyzer display shows the output of the system
• LEDs in all sliders, Two Line inputs and dual tape monitor loops
• Tuner | CD | TAPE | DVD inputs!
• Power supply MAX:20W
• NOTE: Refer the User Manual before use which is highly essential.

User questions & answers

Question:	can the output be sent to headphones
Answer:	No your source is put into the EQ and out to your amp
Question:	What are the actual dimensions. Is it 2” or 4” tall
Answer:	Around 4" it is a piece of junk I threw mine in the trash. Go to ebay they have lots of equalizers on there.
Question:	When in operation, what does the center window display
Answer:	The center window is NOT spectrum analyzer. It is one color only, and they all move at the same time. This equipment is junk, it is not worth more then 20.00
Question:	Can i hook this up to my home component cd player, or do I need a reciever also
Answer:	you can hook this up in line between a component, cd player, going to an amp. this will not power speakers.

Product description

TRS or XLR balanced inputs and outputs differential / Choice of stereo or the sum of the synthesis of left and right channel subwoofer X10 range are two-channel selector switch / Two channels have 40Hz high pass filter (low cut) All outputs with phase reverse switch / The output of all bands can be independently adjusted average 24dB/Unkwitz-Riley filters (the professional standard) - Stereo / Mono status indication LEO lights, indicating that the mode selection unit RS or differential balanced XLR inputs and outputs. Choice of stereo or the sum of left and right channels while the synthesis of ultra-low sound. X10 range are two-channel selector switch. Two channels have 40Hz high pass filter (low cut) all the outputs with phase reverse switch. All the bands on the average out put can be independently adjusted dB/ Linkwitz-Riley filters (the professional standard). Stereo/mono status indication LED lights, indicating that the choice of unite of work pattern.

• TRS or XLR balanced inputs and outputs differential / Choice of stereo or the sum of the synthesis of left and right channel subwoofer
• X10 range are two-channel selector switch /
• All outputs with phase reverse switch /
• 24dB/Unkwitz-Riley filters (the professional standard)

User questions & answers

Question:	Can I route this straight from my computer, and equalize any noise output coming from there
Answer:	The spikes with the rods slip into holders on fence sections with nothing other than gravity to hold them in place. So,yes, the spikes can easily be removed from the fence sections for storage.
Question:	How long this equalizer is warrantee from manufacture
Answer:	I have had mine for two years and no rust. They have a thick, black enamel on them. Still look like when I opened the box.
Question:	Could I use this for vocal EQ
Answer:	I couldn't find a gate so I just attached two panels (where I wanted the gate to be) with bungee cords so it was easy to move one of them open.
Question:	Can I use this for a 2 channel stereo
Answer:	Please accept our apologies for any inconvenience. If you contact us via Amazon customer message centre with your address we will organise a replacement to be sent.

Product description

The Model 355 Dual 31-Band 1/3 Octave Graphic Equalizer may be used in a variety of applications such as live sound, recording studios, instrument racks, DJ sound systems and fixed equipment installations. Designed to interface into any audio system, the Model 355 is a powerful tool for solving audio problems and creating interesting sound textures. The Model 355 possesses a long list of impressive features including: constant Q circuitry, 20mm center detent sliders (with a selectable boost/cut range of 6dB or 12dB), balanced XLR and 1/4? and unbalanced RCA input and output connections, adjustable high pass and low pass filters, variable input level controls, signal clip level indicators, ground lift switch, internal power supply and selectable line voltage switch. The rugged, all-steel constructed chassis occupies 2U rack spaces and is intended for installation into standard 19? equipment racks. The 355 Dual Channel 31 Band EQ has the features and performance you need for any of your audio applications requiring precise equalization. Dimensions: 3.5?H x 19? W x 8.5? D Weight: 9.0lbs. (4.1kg) Frequency Bands: 31, 1/3 octave, ISO spacing Filter Type: Constant Q - 3% center accuracy Slider Travel: 20mm w/ positive center detent Range: +/-6dB or +/-12dB selectable High Pass Filter: 10Hz to 250Hz, 12dB/oct Low Pass Filter: 3kHz to 40kHz, 12dB/oct Input Connections: Active balanced XLR and 1/4? TRS {XLR pin 2, 1/4? tip = Hot (+)} Unbalanced RCA ...

• Constant Q circuitry 20mm center detent sliders Selectable boost/cut range of 6dB or 12dB Balanced XLR and 1/4" Unbalanced RCA input and output connections Adjustable high-pass and low-pass filters Variable input level controls Signal clip level indicators Ground lift switch Internal power supply Selectable line voltage switch Rugged, all-steel chassis 2U rackspace required

User questions & answers

Question:	does it have 48v phantom for both XLR mic inputs
Answer:	No.
Question:	I have read this unit takes two racks spaces, albeit it states above it is 5.9 inches, so which is it? Thank you
Answer:	Just measured, the height is 3.5 inches.
Question:	Is this true?...i have been told that i cannot connect this to a onkyo 737 home theatre receiver because it does not have a tape loop
Answer:	Hi Steve. I looked up the Onkyo 737 so I could answer your question intelligently. I need to know how you want to use the EQ before I an give you a good answer. You could use the Zone 2 output to feed the EQ input and then connect the EQ output to another source input, say if you own a tape deck and you want to equalize the response, but I do not see the traditional "tape loop" that would enable you to equalize the front two channels irregardless of which source you pick. So the simple answer is no you can't use it effectively. Sorry.
Question:	whay are the in put / out put in each channel are crossing? like. rca has in put and out put on same channel
Answer:	RCA is unbalanced, meaning its susceptible to noise problems. XLR (and 1/4 trs - not 1/4 tr) are balanced, and more immune to noise problems picked up in interconnecting audio equipment. Balanced connections use shielded, twisted-pair cable and three-conductor connectors (like XLR or TRS connectors). This noise cancellation is called “Common Mode Rejection.” It's also good for long cable runs. And so XLR and TRS cables are used to transmit balanced audio from one balanced device to another. In an audio rack you might be tempted to use an inexpensive cable like RCA because the cable runs are short. That's your choice, but the professionals use XLR cables for the cleanest sound they can engineer.

Product description

Specifications:

Material: Metal

Color: Black

Input Impedance: 22KΩ

Output Impedance: 200Ω

Frequency Response: 20Hz~20KHz

Total Harmonic Distortion: 0.05%（1KHz）

Signal to Nosie Ratio: >90dB

Plug: US

Working Voltage: 110-240V

Item Size: 48 * 12 * 4.5cm / 18.9 * 4.7 * 1.8in

Item Weight: 2kg / 4.4lb

Package Size: 56 * 26 * 10.5cm / 22 * 10.2 * 4.1in

Package Weight: 2.5kg / 5.5lb



Package List:

1 * Equalizer

1 * Power Cable (US)

1 * User Manual (English)

 

• Professional dual channels stereo graphic equalizer.
• 15-band design with ±12db adjustable range for each channel.
• With LOW-CUT switch for effectively eliminating the low frequency noise.
• With BYPASS switch for convenient machine debugging.
• XLR balanced and 1/4" TRS unbalanced inputs & outputs.

User questions & answers

Question:	Does it have bluetooth
Answer:	Any 1/4" connector is unbalanced.
Question:	hello i received this EQ and it sounded great but the output level control for the right channel failed after a week. how can i get a new EQ
Answer:	Sorry, again don't know. Haven't tried it.
Question:	Are these 1/4 inch trs inputs and outputs unbalanced
Answer:	It might be a bit tall but honestly, we hooked this up to the home stereo and computer thru the TV for youtube and use it that way.... Then the mics are in hand. This is a total blast and comes out at every party.... Adults included!
Question:	How can I connect dual balance input to EQ-215 to a single output to mixer
Answer:	Your recording device/phone has a USB port (that part of the charger that goes into the computer or the charger plug itself) check to see if you TV has a USB port and you are good to go. You can also get a jack that can be used with both the TV and Memorex. Merry Christmas and good luck.

Product description

The all metal DB DISPLAY MKII decibel display from American Audio is for monitoring your sound volume. It also creates a great light show in your amp rack. Make sure your speakers stay in great shape by keeping those dBs under control through this monitoring system. The LED display progresses from green through amber, to red. There are two different operating modes: Dot or Bar. A 5V power supply is included so you can get the unit plug in an running right away. The DB DISPLAY MKII is perfect a stage, church, club or bar install or for a mobile entertainer.

• Designed to set in an amp rack to view your decibel level and Creates a great light show in your amp rack
• Display progresses from green through amber to red and Sensitivity adjustment on both left and right channels
• 2 separate modes: dot and bar and Includes 5V power supply
• Line Inputs: Left & Right RCA / Left & Right XLR and Line Outputs: Left & Right RCA / Left & Right XLR
• Voltage Operation: DC 5V, 500mA Power Supply included and Dimensions: (LxWxH): 19” x 1.75” x 1.75” / 44.5mm x 483mm x 44.5mm

User questions & answers

Question:	I want to use on a dedicated subwoofer amp. What is the frequency response of this unit
Answer:	Frequency response does not matter. This unit is a meter that measures signal strength/level - which is apples and oranges to frequency response. It will work fine with your subwoofer but don't hook it up to the power outputs from the amp - hook it up to the signal going into the power amp.
Question:	Can you hook xlr to rca(for the stereo receiver)? True probably go just rca ro rca but that wont be as much fun
Answer:	Yes, XLR is positive, negative and shield. Depending on signal direction. If xlr to rca shield would only connect at xlr. If rca to xlr shield would be connected to rca negative post. When shield is connected to sorce connector only it creates a shield to block interference along the cable.
Question:	So which 5v power supply is included? (usa
Answer:	Standard . 5v to 120v
Question:	Can this be used with a bass amp
Answer:	Be warned... it is NOT accurate (flat) with regard to bass frequencies. It works down to around 50 Hz, but at 30 Hz response is down and at 20 Hz it's WAY down. Something to be aware of.

Product features

DB Display MKII

The all metal DB Display MKII decibel display from American Audio is great for monitoring your sound volume. It also creates a great lightshow in your amp rack. Make sure your speakers stay in great shape by keeping those dBs under control through this monitoring system.

The LED display progresses from green through amber, to red. There are two different operating modes: Dot or Bar. A 5V power supply is included so you can get the unit plug in an running right away. The DB DISPLAY MKII is perfect a stage, church, club or bar install or for a mobile entertainer.

Product description

BEHRINGER 15BAND EQ WITH FBQ

• Professional 15-band stereo graphic equalizer for live and studio applications
• Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• Dedicated mono subwoofer output with adjustable crossover frequency
• Additional low-cut filter removes unwanted frequencies, e.g. floor rumble

User questions & answers

Question:	Hi. How would you connect this to a behringer xenyx mixer to fine tune your music? Thanks
Answer:	Sure anything that can handle XLR or RCA inputs is great to use with this versatile unit.
Question:	I read the older model got really hot, Does this one have the same problem
Answer:	I don't know about the older model but I have two of these each sitting on top of 2 Sonic Exciters, on top of 2 Crown 1000 amps in the same open rack. It doesn't seem to generate much if any heat. These are nice units especially for the price.
Question:	will this eq hook to my receiver wth regular rca cables
Answer:	hello. this EQ will not be able to connect to your receiver with RCA cables. This unit can only be connect via XLR or 1/4in TRS cables. you can always buy and adapter connect weather its XLR or 1/4in TRS. let me know if this is helpful.
Question:	Can you hook this up with just xlr cables
Answer:	yes, XLR or 1/4" TRS

Product features

BEHRINGER (FBQ1502HD)

• Professional 15-band stereo graphic equalizer for live and studio applications
• Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• Dedicated mono subwoofer output with adjustable crossover frequency
• Additional low-cut filter removes unwanted frequencies, e.g. floor rumble
• Highly accurate 4-segment LED output metering and input gain controls for easy level setting
• Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors

ULTRAGRAPH PRO FBQ1502HD

Professional audio engineers have known for decades that a good EQ makes all the difference in how a performance is perceived. Although multi-band graphic equalizers have been around for a long time, they have changed very little… until now! The ULTRAGRAPH PRO FBQ1502HD takes the graphic equalizer into the realm of high-definiton audio, providing robust features and our proprietary FBQ Feedback Detection System

How Does Equalization Work?

Imagine the audio frequency range as a very wide highway with lots of “lanes”. Each of these lanes represents a specific frequency band.

• The lanes on the left side contain the really low frequency content, mainly bass, bass vocals, and the kick and tom drums
• The middle lanes make up the fundamental zone of most musical instruments and the male and female vocals
• The right-hand lanes have all the highfrequency stuff, such as snare drums, cymbals, higher pitched percussion instruments and the content that adds sizzle to the mix

Ultra-Low Noise Operation

The high-definition FBQ1502HD provides superb, ultra-low noise performance thanks to German engineering, and the use of quality components. 4580 dual operational amplifiers are employed throughout for the utmost signal integrity across the entire audio spectrum. With 15-bands of smooth and precise equalization per channel, the stereo FBQ1502HD adds the finishing professional touch to your recordings and live shows.

Built in Crossover

Speaking of special low-frequency tools, the FBQ1502HD also has a dedicated subwoofer output with an adjustable (30 - 200 Hz) cut-off frequency. Balanced XLR Outs are provided so you can connect to power amps or directly to your active subwoofers, without any additional hardware.

• Package Includes: Rockville REQ20 19" Rack Mount Pro Dual 10 Band Graphic Equalizer EQ w/VU Meters, Rockville RCDR10B 10' Dual RCA to Dual RCA Pro Audio Cable 100% Copper
• Features Of REQ20: Dual 10 Band Graphic Equalizer (20 Bands Total), Frequency Response: 20Hz - 20KHz, Dual VU Meters Level Monitor, Blue LED on each Equalizer Slide Control, Stereo RCA Line Input, Stereo RCA Line Output
• Vacuum Fluorescent Display, Bass/Midrange/High EQ Controls, Separate Left/Right Channel Volume gain control, Signal to Noise Ratio: >88dB, Input Power: AC ~ 110V 60H/220V 50Hz, 110/220V Switchable, Front Panel Power Switch, Removable Rack Mount Brackets, Dimensions: 17"(19" w/brackets) x 9" x 2.2", Weight: 5 lbs
• Features of RCDR10B: Rockville RCDR10B Black Dual Mono Right Angle RCA to Straight RCA Patch Cable, Dual RCA to Dual RCA, Nickel-Plated for Rugged Durability and Efficient Signal Transfer, 100% Copper Conductors for Enhanced Signal Clarity, OFC Spiral Shields for Effective EMI and RFI Rejection and Flexibility, Length: 10 Ft, Color: Black

User questions & answers

Question:	Will this work with denon avr 2112ci receiver
Answer:	Yes you can. I only use 2 channel receivers. Not into cinema and avr receivers. I use an external audio source selector. Available on Amazon. Mine handles 3 sources. But selectors with more source inputs are available. I run my sources to the inputs on the selector. Then run the single output to the auxiliary input or in the case of newer receivers, input 1,2 or 3. For my application it works very well. Technically you can connect this eq to your Denon or any other receiver without the in out loop.
Question:	what would cause this to make an awfull hissing sound ? right now its useless
Answer:	Trying to diagnose sound equipment is not always easy. A hum usually means a bad ground. A his could be a lose connection or a bad cable. First see if the noise is on both sides or just one. Single side noise try changing a cable from the left to the right to see if the hiss changes sides. If it does change does change out the cable. If the his stays then you have a speaker problem. If the his is on both sides check your ground. Hope this helps.
Question:	Can I connect this to a yaqin mc-13s
Answer:	You should beable to if u use aux cables for it
Question:	Can it be connected straight to a 200 watt am/fm home reciever
Answer:	Yes it will work very good with all types of recievers And 200 watts that's enuff to do alittle bit on thumppin I also have 200 watt receiver and with ROCKVILLE SOUNDS EVEN GREAT DEPENDED ON UR SPEAKER SIZE I HAVE 2 15 AND 2 SURRENDER NICE

Product features

Rockville REQ20 19" Pro Rack Mount Dual 10-Band Graphic Equalizer EQ+VU Meters

Package Includes:

• Rockville REQ20 19" Rack Mount Pro Dual 10 Band Graphic Equalizer EQ w/VU Meters
• Rockville RCDR10B 10' Dual RCA to Dual RCA Pro Audio Cable 100% Copper

_________________________________________________________________________________________________________________________________________________________________

Features of REQ20:

• REQ20: Dual 10 Band Graphic Equalizer
• Dual 10 Band Graphic Equalizer (20 Bands Total)
• Frequency Response: 20Hz - 20KHz
• Dual VU Meters Level Monitor
• Blue LED on each Equalizer Slide Control
• Stereo RCA Line Input
• Stereo RCA Line Output
• Stereo RCA Line Output for Record
• Vacuum Fluorescent Display
• Bass/Midrange/High EQ Controls
• Separate Left/Right Channel Volume gain control
• Signal to Noise Ratio: >88dB
• Input Power: AC ~ 110V 60H/220V 50Hz
• 110/220V Switchable
• Front Panel Power Switch
• Removable Rack Mount Brackets
• Dimensions: 17"(19" w/brackets)  x 9" x 2.2"
• Weight: 5 lbs

_________________________________________________________________________________________________________________________________________________________________

Features of RCDR10B:

• Rockville RCDR10B Black Dual Mono Right Angle RCA to Straight RCA Patch Cable
• Dual RCA to Dual RCA
• Nickel-Plated for Rugged Durability and Efficient Signal Transfer
• 100% Copper Conductors for Enhanced Signal Clarity
• OFC Spiral Shields for Effective EMI and RFI Rejection and Flexibility
• Length: 10 Ft
• Color: Black

Product description

When the pros need an EQ, they turn to db. With a proven track record that spans four decades, dB EQs are the industry standard for touring, studios, and audio installations. With the db. heritage of revered Pro EQs, the 231s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls. The db. 231s includes two 31-band channels of 1/3-octave equalization, 12 dB input gain, switchable 6 dB or 12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail, The 231s offers exceptional sound and rugged reliability that s you will always sound your best. Sure to find a home in the studio, on tour and with installed sound venues, The db. 231s is destined to take its rightful place in the lineage of great dB signal processors that are the professional's choice in signal processing. With such affordable quality, There's no longer any excuse for compromising your sound.

• Dual 31-band, 1/3-octave constant Q frequency bands
• Switchable boost/cut ranges of 6 or 12 dB
• Front panel bypass switch
• 12 dB input gain range
• 4-Segment LED ladders for monitoring output levels
• Inputs: ¼” TRS and female XLR (pin 2 Hot)
• Outputs: ¼” TRS and male XLR (pin 2 Hot)

User questions & answers

Question:	Can the rack "ears" be cut off ? I have a very strict width limit
Answer:	Any ears can be cut off, but I would be very careful. If you damage the corners, the integrity of the cabinet is gone.
Question:	If using xlr to rca connector will it make noise
Answer:	rca connectors are typically noisy on any application.
Question:	Does this amp have low frequency’s for body shaking bass
Answer:	It is not an amp. You will need an amp between this and your speakers. This adjusts the bass thru treble in 31 frequency bands from 10-20K HZ. I'd suggest Googling graphic equalizer if you are not sure!
Question:	Can it be used in a car
Answer:	At 19" wide and several inches deep, requiring a/c power, I can't envision a situation where it would be practical to use this product in a car. Also, electrical noise from car electronics would be a factor.

Product features

dbx 231s Graphic EQ

When the pros need an EQ, they turn to dbx. The dbx 215s includes two 15-band channels of 2/3-octave equalization, ±12 dB input gain, switchable ±6 dB or ±12 dB boost/cut range, 20mm nonconductive sliders, an intuitive user interface, and output level metering. From its extended frequency response and dynamic range, to the quality componentry and meticulous attention to detail, the 215s offers exceptional sound and rugged reliability that guarantees you will always sound your best.

Product description

Ultra-Compact 9-Band Graphic Equalizer with FBQ

If we all lived in a perfect world, there would be no need for audio equalization. Sound systems would be perfect and would reproduce perfect signals in all their glorious perfection. Also, everyone in that perfect world would like the same amount of bass, midrange and high frequency, and there would be no such thing as feedback. But the world isn't perfect, is it? Even the best sound system can benefit from the use of a good EQ--like the FBQ800.

Even the best sound system can benefit from the use of a good EQ. Click to enlarge.

1/4-inch and RCA inputs and outputs.

Nine steps of graphic EQ.

How Does it Work?

Imagine the frequency range of the sound you hear as a highway, a very wide one with nine lanes. Each of these "lanes" represents a single octave of the sonic spectrum. The first four lanes, labeled 63 - 500 (Hz) contain the really low frequency sound content, mainly bass, bass vocals, and the kick and tom drums. The three lanes labeled 1 k, 2 k and 4 k (Hz), make up the fundamental zone of most musical instruments and the male and female vocals. 8 k and 16 k cover the frequency range of cymbals, snare drums and higher pitched percussion instruments. The FBQ800 allows you to control the flow of audio traffic in each of these nine lanes. When properly applied, EQ makes it possible to hear all of these frequency ranges equally, thus the term equalization.

Feedback Elimination

When a specific frequency, or range of frequencies, reaches too high a level, feedback occurs--that all-too-familiar squeal or howl you get when the mic is too close to the speaker. Basically, feedback happens when there is so much of a particular frequency that it is picked up by the mic and run through the system again. That's why feedback typically gets louder and louder the longer it's allowed to occur. Needless to say, this kind of feedback is very undesirable.

This is where the FBQ800's Feedback Detection System really works its magic. In this ingenious circuitry, LEDs on the individual faders light up when that frequency band is approaching the danger zone. All you need do is lower the illuminated slider until the LED blinks out--voilá, feedback problem solved! What once required a highly trained ear is now an activity that even a child can master.

Sonic Toolkit

That really is the best way to describe the FBQ800. With its nine frequency bands, you easily fine-tune your sound and instantly eliminate feedback. And each fader can be used to boost or cut the frequency range it controls by as much as 12 dB (and that's a lot!).

Special attention is paid to the low frequency zone. In addition to low frequency faders, the FBQ800 features a Low Cut filter for removing unwanted low frequencies such as fl oor rumble, room resonance, electrical hum, etc. This is especially handy if your system is being used for speech rather than music.

To Boost or to Cut, That is the Question

Raising and lowering specific frequency bands can improve the frequency response of any room's acoustics. For instance, if the room you're in is "bass-heavy," lowering the 63 and 125 Hz faders can help eliminate an overall "boomy" or "muddy" sound. Likewise, gently boosting the 8 and 16 k sliders can add sparkle to a somewhat "dark" mix. Are the vocals getting lost in the mix? Raising the level of the 1 k slider can help bring them out.

It's important to note that raising a single fader level is not always the best solution; it's often better to lower the bands surrounding the frequency you want to bring out, and then boost the overall volume level to achieve better headroom.

Built for Accuracy and Reliability

Speaking of headroom, FBQ800's 6-digit LED Input/Output meters and level control are provided for precise level maintenance. Longterm reliability is ensured, thanks to high-quality illuminated faders and switches, and our ultra low-noise audio operational amplifiers provide outstanding sonic performance. In addition, all Mini Series components may be stacked to create an ultracompact signal processing solution.

What's in the Box

Behringer FBQ800 Ultra-Compact 9-Band Graphic Equalizer, Power Supply, User's Manual

• Ultra-compact 9.5" graphic equalizer for studio and stage applications
• Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as Audio Analyzer
• Additional Low-cut filter removes unwanted frequencies, e. g. floor rumble
• Accurate 6-segment LED input/output meters and Level control for precise level indication
• High-quality illuminated faders, potentiometers and illuminated switches for long-term reliability

User questions & answers

Question:	What type of cables are required to hook this up between an amplifier and yamaha receiver? Much appreciated
Answer:	Both
Question:	Can you adjust each channel (left/right) separately
Answer:	Nope, the only things lit are the little indicator lights for power +/- 12dbs and something else.
Question:	I see many mention that they use this for helping hearing loss by using this unit with headphones. My question is how do you use this with headphones
Answer:	They are very clean sounding eqs.
Question:	does it connect to amplifier
Answer:	First, this is not a player. This is a tone control with instead of just the normal bass, treble and high, divides it into 31 (from 20HZ to 20KHZ). Also, this model is mono (1 channel). You can get 2 of these or get the stereo model. You still need an amplifier and a player. You hook this up between a like a CD player and your amp.

Product description

The 351 is a single-channel, 31-band, 1/3-octave graphic equalizer with many features: constant Q circuitry with a 3% center frequency accuracy, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, active balanced and unbalanced input and output connections, adjustable high-pass filter, adjustable low-pass filter, variable input level control, clip level indicators, ground lift switch, internal power supply, and selectable line voltage switch. Rugged, all-steel chassis. Single rackspace. The ART 351 Single Channel 31-Band Equalizer features a rugged all-steel chassis that occupies a single 19" rackspace. The 351 is a single-channel, 31-band, 1/3-octave graphic equalizer with many features: constant Q circuitry with a 3% center frequency accuracy, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, active balanced and unbalanced input and output connections, adjustable high-pass filter, adjustable low-pass filter, variable input level control, clip level indicators, ground lift switch, internal power supply, and selectable line voltage switch.

• The 351 is a single-channel, 31-band, 1/3-octave graphic equalizer with many features: constant Q circuitry with a 3% center frequency accuracy, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, active balanced and unbalanced input and output connections, adjustable high-pass filter, adjustable low-pass filter, variable input level control, clip level indicators, ground lift switch, internal power supply, and selectable line voltage switch
• Rugged, all-steel chassis
• Single rackspace
• The ART 351 Single Channel 31-Band Equalizer features a rugged all-steel chassis that occupies a single 19" rackspace
• The 351 is a single-channel, 31-band, 1/3-octave graphic equalizer with many features: constant Q circuitry with a 3% center frequency accuracy, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, active balanced and unbalanced input and output connections, adjustable high-pass filter, adjustable low-pass filter, variable input level control, clip level indicators, ground lift switch, internal power supply, and selectable line voltage switch

User questions & answers

Question:	are the sliders lit
Answer:	Jeff, the Amazon catalog has the wrong image. Image feedback request has been sent to Amazon to fix this issue. This product is the DBX 1231 Dual 31 Band Graphic EQ. Thanks Jeff-Pro Audio Land
Question:	l want to use this EQ for my center channel on my 5.1 home theater system and the Art 355 for my two front speakers
Answer:	Yes You can apply either channel of your sources L/R output to the 2131's Channel 1/2 input. It doesn't matter, as long as you keep your signal flow SEPARATED and in series. I never use RCA connectors. This device was primarily designed for Balanced 3 pin audio input &outputs. The use of RCA connectors only minimizes system hum & noise. This defeats the purpose of this devices noise reduction circurty. DBX realizes this. That is why they did not make RCA connections available on this device. 98% of consumer audio systems (home) use RCA connectors not Professionally balanced 3 pin audio connectors. That is the beauty of this device. Don't try to mix apples and oranges. If the connectors are not there they are not meant to be. Hope this helps.n Doc
Question:	Can this EQ351 be used with a stereo receiver to play records
Answer:	don't buy it,its to complicated.you need also an amplifier to connect this eq.(is working just like lpf/hpf filter without integrated amplifier )choose just any Clarion cd player,and you will have everithing
Question:	Would this equalize both channels of a stereo signal from a cd player and then connect to an amplified speaker system so L&R signals are the same
Answer:	You’re going to need an amp for your highs. Run ur rca’s from amp to eq. Same thing for the subs and set the eq for your sound then enjoy !!!

Product description

Professional Dual 15-Band Stereo Graphic Digital Equalizer 19" Rack Mount / Input Gain ***BRAND NEW -- NEVER USED*** Very high quality Professional Dual 15-Band Equalizer with Crystal Clear Sound quality MUSYSIC MU-EQ15B One Year Limited Manufacturer Warranty in USA The MUSYSIC MU-EQ15B is a professional Equalizer at your disposal is priceless and can make or break your overall sound! MUSYSIC’s MU-EQ15B Dual 15-Band Professional Equalizer was designed with exactly this in mind. This is a professional Equalizer system that can be used to adjust your overall sound to a professional level!

• Digital Stereo dual 15-band graphic equalizer /
• Two Audio Source Line Input / 1/4" & XLR line input sources / 1/4" & XLR line output source
• Low Cut, Range +/- 12, ByPass, Clip / Input Gain control / Low noise circuitry
• 19" Rack Mount

User questions & answers

Question:	Can this unit be used with a home stereo receiver using 1/4" to rca adapter cords
Answer:	It's not an amp. It's a equalizer unit to fine tune music. This unit goes between the head unit and amplifier. Most head units provide 2 volt signal to the amp, this eq will provide 7 volt signal to the amp.
Question:	are the cables included with this EQ? If not, how much do they cost
Answer:	If I understand your question correctly then yes, it does have a plug to receive hi-level input from your stereo
Question:	I received a “three prong vertical” power cord but it does not fit into the back of the unit
Answer:	Yes each of the 31 bands represents an octave spanning 20Hz to 20kHz. Never tried to turn off the LEDs. They are not real bright but when they flicker it helps to locate the frequency of the feedback.
Question:	I want to know i put sound to equalizer than go to mixer or go to mixer than go to to equalizer
Answer:	The HQ231 has XLR, 1/4 TS, and RCA inputs for each channel.

Product description

Rockville REQ42-S



The Rockville REQ42-S is a 19” rack mountable equalizer that has individual LED

indicators and RCA outputs. It has a frequency response of 20-20,000 Hz and a

Signal to Noise Ratio Signal to Noise Ratio of 80dB. This equalizer has a weight

of 6 lbs.

Features:

Rockville REQ42-S Silver 19" Rack Mount 2 x 21 Band Equalizer w/Spectrum

Analyzer



19" Rack Mountable



Dual Channel 21+21 Band Graphic Equalizer (total of 42 bands)



Blue LED on each Equalizer Slide Control



RCA stereo input: DVD/Tape/Tuner/Aux-MP3 with Front Panel Selector Switch



RCA Stereo Record Output



Front Panel 3.5mm iPod/MP3 Player Input Jack



Dual VU Meters Level Monitor



Individual LED Indicators



Outputs-RCA (REC, Mail)



Multi Color LED Display



Low/High Function



Frequency Response: 20-20,000 Hz



Signal to Noise Ratio: 80dB



Removable Rack Mount Brackets

• Rockville REQ42-S Silver 19" Rack Mount 2 x 21 Band Equalizer w/Spectrum Analyzer.
• 19" Rack Mountable.Dual Channel 21+21 Band Graphic Equalizer (total of 42 bands).
• Blue LED on each Equalizer Slide Control.
• RCA stereo input: DVD/Tape/Tuner/Aux-MP3 with Front Panel Selector Switch.
• RCA Stereo Record Output. Front Panel 3.5mm iPod/MP3 Player Input Jack.
• Dual VU Meters Level Monitor. Individual LED Indicators.
• Outputs-RCA (REC, Mail).Multi Color LED Display.

User questions & answers

Question:	i dont have rca plugs int he back of my stereo. how i can conect this eq to my stereo thanks
Answer:	You could probably use a product like this: https://smile.amazon.com/gp/product/B07H94D77V/ref=ppx_yo_dt_b_asin_image_o05_s00?ie=UTF8&psc=1 I use one in a similar application. You would need to add a 3.5mm stereo plug to two RCA cable.
Question:	I cant get the slide controls to change any kind of frequency. Can you help
Answer:	There is a button that says EQ , if you do not engage the EQ your in bypass mode and there will be no Equalization . So press that button , but turn the volume to a lower level , because when the the EQ is engaged the volume will bump up . And also make sure your connections are correct, stereo out to EQ in . If your not sure if your hook up is correct refer to you Stereo owners manual.
Question:	i have a sherwood receiver and yamaha speakers for outside deck,would this eq work for this
Answer:	Depends upon the inputs and outputs for your receiver. Also depends upon whether your receiver supports an equalizer loop. Also depends upon whether you pipe other sources into your receiver or not. Don't take this equalizer outdoors, of course.
Question:	How does the spectrum analyzer work
Answer:	Very pleased....good rich sound

Product features

Rockville REQ42-S Silver 19" Rack Mount 2x21 Band Equalizer w/Spectrum Analyzer

The Rockville REQ42-S is a 19” rack mountable equalizer that has individual LED indicators and RCA outputs. It has a frequency response of 20-20,000 Hz and a Signal to Noise Ratio Signal to Noise Ratio of 80dB. This equalizer has a weight of 6 lbs.

Features:

Product description

Nady A-B Box (GEQ-215)

• Active balanced XLR, 1/4" TRS and unbalanced RCA inputs and outputs
• Constant Q bandwidth from each filter with 3% frequency accuracy
• Parallel filter design for minimal phase distortion

User questions & answers

Question:	are the sliders lighted
Answer:	No, this is a single channel equalizer, if you bought 2, one for each channel it would work. But there is a better answer, the ART 341 is dual channel for stereo systems. However it comes with 15 band per channel, 2/3s octave. Better function in my estimation. And provided you have RCA input, mini-plug or 3 prong connections on your amp, going from CD to amp to eq to speakers is easy. This eq is by far the most versatile of the ART eqs.
Question:	Can it be used on 220v
Answer:	YES
Question:	is this for cars or home stereo
Answer:	Cables are not included. Cost depends on brand.