14 best band graphic equalizers

Product description

The Rockville REQ231 is an extremely high quality professional rack mountable equalizer. This is a 2 channel equalizer with 31 bands per channel. The main focus on this was sound quality and making it rugged and tough. We wanted to build a professional product that will instantly make a good speaker sound better, and after months of testing we know we did it!



This graphic EQ also has a low cut crossover filter switch, with status LED, that helps remove rumble from mics. Another great feature is the bypass switch, with LED indicator, which is very convenient when doing sound checks.



We added a sub output with frequency controls which is something that we see a need for. Many brands for some odd reason do not give you a sub output and sub controls. We made sure to include this important function.



If you want the best sounding EQ on the market at a great price, then we highly recommend you try out our REQ231. If you are unsatisfied with the quality we will give you a 90 day money back guarantee including return shipping!



Features:



Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer With Sub-Output

Dual channel (31 bands per channel)

Variable stage low and high cut filters

1/3 octave filter sets (ISO centers)

20 Hz to 20 kHz effective equalization range

Constant Q filters

Selectable 6dB or 12dB cut or boost range

Output level LEDs (-10 to +17 dB)

Bypass switch with status LED

Balanced XLR input/output

Subwoofer out

Channels: 2 (stereo)

Connectors: XLR balanced inputs and outputs

Bands: 31 per channel

• Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer With Sub-Output. Dual channel (31 bands per channel). Variable stage low and high cut filters.
• 1/3 octave filter sets (ISO centers). 20 Hz to 20 kHz effective equalization range. Constant Q filters. Selectable 6dB or 12dB cut or boost range. Output level LEDs (-10 to +17 dB).
• Bypass switch with status LED. Balanced XLR input/output. Subwoofer out. Channels: 2 (stereo). Connectors: XLR balanced inputs and outputs. Bands: 31 per channel.
• Frequency Centers: 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.5 kHz, 2 kHz, 2.5 kHz
• Control Range: Selectable +/-12dB 0r +/-6dB. Input Impedance: 50k ohms. Output Impedance: 600 ohms. Maximum Output Level: +21dBLevel Control: +/- 10 dB. Signal to Noise: >93 dB. Distortion: 0.005%.

User questions & answers

Question:	Can i connect speakers to the equilizer
Answer:	Mixer to eq then eq to powered speakers or mixer to eq then eq to amp then amp to unpowered speakers
Question:	can this EQ to subwoofer
Answer:	Its good i hve 1 single channel but it qorks great..
Question:	Would this work to boost the bass up a good bit in my home 2 channel stereo? I like a lot of bass without a subwoofer
Answer:	As any equalizer it is just going to help arrange the different frequencies. If you want more bass you should get a subwoofer. What an eq does is re-arrange what power is already there. You could make it sound more bassy by turning down the higher frequencies but that's working backwards. If you want more bass I would suggest using the money to buy a more powerful amplifier. (Or again getting a subwoofer)
Question:	Is the output for each channel stereo or mono
Answer:	Mono per side. Use both channel for stereo. For few bucks extra I suggest you to get Behringer EQ instead. Amazon always have great price for those EQ.

Product features

Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer With Sub-Output

The Rockville REQ231 is an extremely high quality professional rack mountable equalizer. This is a 2 channel equalizer with 31 bands per channel. The main focus on this was sound quality and making it rugged and tough. We wanted to build a professional product that will instantly make a good speaker sound better, and after months of testing we know we did it!

This graphic EQ also has a low cut crossover filter switch, with status LED, that helps remove rumble from mics. Another great feature is the bypass switch, with LED indicator, which is very convenient when doing sound checks.

We added a sub output with frequency controls which is something that we see a need for. Many brands for some odd reason do not give you a sub output and sub controls. We made sure to include this important function.

If you want the best sounding EQ on the market at a great price, then we highly recommend you try out our REQ231. If you are unsatisfied with the quality we will give you a 90 day money back guarantee including return shipping!

Features:

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

The EQS755 is 1/2-DIN chassis Graphic EQ w/ built-in low-pass filter. Equipped with a full-featured 7-band Graphic equalizer, you will enjoy superior control over the audio spectrum with frequency adjustments in the 50 Hz to 16 kHz range over seven bands. This gives you the power to get the most of your sound system, and the ability to contour the sound output to your musical taste.

• 1/2-DIN chassis graphic equalizer with built-in low-pass filter6-channel/ 8-Volt RCA outputs (front, rear and subwoofer)7-ban graphic equalizer (50Hz, 125Hz, 315Hz, 750Hz, 2.2Khz, 6Khz, 16Khz)
• 3.5mm Front aux input2-channel RCA aux input with variable gain adjustments and high level speaker inputs
• Blue illuminationindependent master volume and subwoofer level Control with fader control select able 12Db low-pass Filer (60Hz or 90Hz)
• Ground loop isolation circuit Dimensions: 7"(w)x4-1/4"(l)x1"(h)

User questions & answers

Question:	What size are the screws
Answer:	Do not know. But it is well made and probably not need of repair for a long while to come.
Question:	Can you hook this up to subwoofer and door speakers? Got 3000watt ssl evo amp and 2500watt audiotek for doors. Please help
Answer:	Yes ,I guess so
Question:	does this amp remove distorcion and make speakers louder
Answer:	Yes it's a 2 channel equalizer
Question:	Does this double as a line converter for factory sterols without RCA outputs
Answer:	I ordered these twice and got 5 pieces with each order

Product description

The GE-7 equalizer pedal offers seven bands of EQ ranging from 100Hz to 6. 4kHz, ideal for guitar sounds, with boost/cut of +/- 15dB per band. This lets you completely control your sound and eliminate unwanted feedback, particularly when connected after a distortion effect.

• Model# GE7
• The Package Height of the Product is 3 inches
• The Package Length of the Product is 6 inches
• The Package Width of the Product is 4 inches

User questions & answers

Question:	is this buffered
Answer:	It depends on the settingd
Question:	One note on my guitar—e 7th fret on the a string—hums and booms super loud when played as a single note. will the boss eq take care of that
Answer:	The 7th fret of the A string is the note E3. It has a frequency of 164.8 Hz. By reducing the bottom 2 sliders, at 100 and 200 Hz, but probably more attention on the 200 Hz, you can reduce the boominess of that note. However, you will also reduce those frequency components in all other notes played. You may be able to adjust an individual pole of your pickup(s) up or down depending on your particular pickup. Or may be able to adjust the pickup height on the Low E side. Again, such adjustments will impact a whole range of notes. Another option would be to find a pedal with a notch filter (such as a Boss AD-5 or AD-2) and use that to target the specific offending frequency. Best first step - make sure your guitar is properly set up by a luthier and discuss this issue with them prior to setup.
Question:	What is the production year of this pedal
Answer:	You are going to get varying answers as this pedal is still in production and there are many sellers. There's no guarantee what year you will get.
Question:	these days i play exclusively clean, mostly with my fingers. my gear is great, but am looking to remove sibilance from my tone. any opinions
Answer:	I'm guessing your speaking about playing an acoustic guitar, so that is what I will address... I bought this GE-7 to get rid of some nasty frequencies in the mid range of my acoustic guitar set up. Many piezo - electric pick-ups mounted under the saddle tend to over amplify the high frequencies, (string noise, tininess) and it can be tough to dial it out without adversely effecting your over all tone. Give this pedal a try, the GE-7 is bullet proof, and sounds very musical to the ear. Just start by dropping the 6.4k band by 5 dB or so. Small adjustments can make a huge difference. Experiment, have fun and remember that nobody can really tell what sounds perfect to you, but you. I hope this helps.

• 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

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

Audiopipe 7 Band Graphic equalizer with Hi/Lo - 9V line driver

• 1/2 DIN chassis graphic equalizer with adjustable subwoofer frequency 60Hz/90Hz
• Active Gain Pre-Amplifiers with adjustable input Sensitivity and Individual Left and Right Sensitivity Controls for Auxiliary Input
• Subwoofer Output and Three RCA Outputs

Product description

The HQ231 Dual 31-band Graphic EQ is perfect for any live sound application where there is a high feedback potential including monitor mixes, side-fill cabinets or high powered front-of-house mixes situations. The HQ231 features ARTs proprietary FDC Feedback Detection Circuit, with constant Q circuitry capable of delivering a 3 center frequency accuracy. Professional features like LED level metering, selectable 6dB or 12dB slider range, active balanced and unbalanced input output connectors, RFI filters, independent variable Hi Pass low cut and Low Pass high cut filters, variable input level control, passive bypass switch, clip level indicator, ground lift switch, and selectable line voltage switch make it ideal for any professional application or touring system. FDC Feedback Detection Circuit - FDC Feedback Detection Circuitry designed and developed by ART Engineering instantly illuminates an LED on the corresponding EQ band fader with the greatest sustained signal. The LED indicators can immediately show which band corresponds to the feedback frequency, allowing the sound engineer to reduce gain in that band to quickly kill the feedback while having a minimal impact on the sound of the live program material. The FDC also acts as a simple spectrum viewer while the concert proceeds showing where the hot areas are. During system setup and sound check, the FDC may be used to help identify room and sound system resonances. By increasing the gain until feedback, it is easy to identify those frequencies that are likely to be problems. Reducing the gain in these bands helps tune the sound system, and, remove problem areas before the show begins. It also helps increase the gain margin before feedback.

• FDC Feedback Detection Circuit.
• Dual Channel 31-Band Graphic Equalizer.
• Output Level VU Metering on Each Channel.
• Constant-Q Filtering.
• Individual High and Low Pass Filters on Each Channel.

User questions & answers

Question:	is this a octive eq? can the lights be placed on non flickering
Answer:	The fencing I received is black.
Question:	what kind of inputs and outputs does it have
Answer:	yes, there are 5 pieces at 13" each which makes 65" total
Question:	is the face blue or black
Answer:	5 feet only
Question:	Do the sliders light up red? or no? whats the diff between this and the 355? version
Answer:	Just put the stakes down for one part and only one stake down for the other so that it would swing with the hinge used as a gate.

Product description

7 BANDGRAPHIC EQUALIZER BY GRAVITY! The Gravity 7 Band Graphic Equalizer GR-EQ9 is a one of the best graphic equalizers by Gravity. With the various features and specialties such as 10Hz to 50kHz frequency, 11-15v DC power supply, equalization range of +-12 dB make this item impactful. Subwoofer Equalizer: 60/90Hz, Signal To Noise: 90dB, Max Output Volt: 7V RMS PRE Graph Frequency 50Hz - 16kHz are more features. All of these features and power makes your user experience great. A graphic equalizer is the simpler type of audio equalizer, most often sporting multiple sliders or controls for boosting or cutting bands. Its Simple and intuitive operation and it has a broad range of effect. Ideal for general use. The GR-EQ9 gives you great value for your money and satisfaction with a perfect music and sound. We have been providing a huge amount of this items to customers. They love them and keep sending us more friends for use the Gravity 7 Band Graphic Equalizer GR-EQ9 as well. We are getting very good feedback and reviews from our valued customers.

• Power Supply: 11-15V DC | Max Output Volt: 7V RMS PRE Graph Frequency 50Hz - 16kHz
• Equalization Range: +-12dB | Subwoofer Equalizer: 60/90Hz | Input Impedance: 15k Ohms
• Signal To Noise: 90dB | T.H.D. AT 0.05% | Channel Division: 70dB
• Frequency: 10Hz-50kHz

User questions & answers

Question:	Does it come with an adapter
Answer:	It comes with the power plug if that is the question. This was the same as my Clarion EQ. Just a different name. The plug fits my Clarion as well
Question:	Does it bring the wiring plug
Answer:	Yes
Question:	How has it held up over the years
Answer:	Works well for the price
Question:	Does it come with wiring harness and mounting brackets
Answer:	Yes it comes with everything

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 215s meets the needs of the most demanding sound reinforcement environments, while offering the simplicity of straightforward controls. The dB 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 10Hz to 50kHz frequency response and 112 dB dynamic range to the quality componentry and meticulous attention to detail, The 215s 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 215s 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 15-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 215s 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

7 BAND PASSIVE STEREO GRAPHIC EQUALIZER WITH FADER CONTROLSOUNDXTREME 7 BAND PASSIVE STEREO GRAPHIC EQUALIZER WITH FADER CONTROL ST-EQ-180

• Featuring: Adjust gain Control / Output level Display/ EQ Slide Control / Subwoofer Xover Points / Subwoofer Switch
• Specification:
• EQ Center Frequencies: 60, 150, 400, 1K, 2. 5K, 6K and 15Khz / Equalization Range: +/- 12dB
• Input Impedance: 100 Ohm / Input Sensitivity: 4 Volts for 500mV out
• Frequency Response: 20hz to 20kHz +/- dB / Crossover Rolloff: 12dB/Octave / Power Requirement: 11-16V DC

User questions & answers

Question:	Este ecualizador necesita un conectar a un amplificador
Answer:	Si este equalizador es pasivo y nesecita un amplificador de 4 canales
Question:	Can I get this to work at home
Answer:	no, it is a 12 volt system and your house is 120 volts
Question:	I bought this to connect to bluetooth 4 channel amp on harley should work good for that right
Answer:	If you're using a 4-channel amp you have two channels for the front and two channels for the rear there is one channel left for the subwoofer you can add one more amp if it's a 2 channel amp you will want to bridge it to one channel for the subwoofer
Question:	Can this EQ be connected direct to the speakers like the old ones, I'm looking for one that not need to connected to an amp
Answer:	Yes you can, but the quallity of this equalizer is to poor!

Product description

7-Band Graphic Equalizer 50Hz, 125Hz, 315Hz, 750Hz, 2. 2kHz, 6kHz, 16kHz 6-Channel / 8-Volt RCA Outputs (Front, Rear, and Subwoofer) Blue illumination Gold-plated contacts for optimum signal transfer Master and subwoofer volume control 3. 5mm Front AUX Input 2-Channel Rear RCA AUX Input with Variable Gain Adjustment Selectable 12dB Low-Pass Filter (60Hz or 90Hz) Fader Control Ground Loop Isolation Circuit RCA and High Level Speaker Inputs Dimensions: 7. 00"W x 4. 25"D x 1. 00"H

• 7-Band Graphic Equalizer 6-Channel / 7 Volt RCA Outputs (Front/Rear/Subwoofer)
• Adjustable Master Volume Level Control Adjustable Subwoofer Level Control
• 2-Channel RCA AUX Input with Adjustable Gain Selectable 12dB Low-Pass Crossover (60Hz or 90Hz)
• Gold Plated Terminals Dimensions:7"(W) × 1"(H) × 4"(D)
• This unit is exclusively for vehicles with a negative ground, 12V battery system.

User questions & answers

Question:	Does this equalizer support stereo
Answer:	Stereo just means a left and right channel as compared to "mono", which means a single channel. So, yes, this EQ does have left and right channels. No, radio or stereo that I know of today has just a single channel, unless it has one speaker.
Question:	Where would i find a mounting kit to house this and a single din head unit in a double din opening
Answer:	It come with a kit for mounting it to something mines is under my ash trash.
Question:	will this run main and aux at the same time because i have a four channel amp and obviously front play diffrent sounds than the rear
Answer:	The signal that comes out of your head unit is the same whether it is front or rear (90 percent true). That is why running the two outputs from the head unit to the EQ and then the EQ four outputs to the amp will not change anything. The only sound differential you will have is your fader,tone,treble settings which you can control and adjust with the EQ. NOW THAT BEING SAID. This true for 90 percent of the head units out there. I know my head unit has HPF and LPF filter setting and bass curves for the sub channel. You are losing all those. The only signal signal will be for the two that you hook up to the EQ.
Question:	will this fit in a single din dash (2001 chevy silverado) with a deck
Answer:	i realize this is an old question but for anyone with a 99-02 silverado, this is for you: you can use a single din head unit with a 1/2 din in dash eq. You simply need to get a dash kit that has single din plus eq. metra used to make one for 1999-2002 silverados but it was discontinued a while ago. the part number is Metra 99-3003. idk if scoche or AI makes or used to make one but i DO know that metra 99-3003 works. you can still find them around the internet. i just bought one for a buddies truck.

Product features

Clarion EQS755

• 7-Band Graphic Equalizer (50Hz, 125Hz, 315Hz, 750Hz, 2.2kHz, 6kHz, 16kHz)
• 6-Channel / 8-Volt RCA Outputs (Front, Rear, and Sub-woofer)
• Blue Illumination
• Independent Master Volume and Sub-woofer Level Control with Fader Control
• 3.5mm Front AUX Input
• 2-Channel RCA AUX Input with Variable Gain Adjustment
• Selectable 12dB Low-Pass Filter (60Hz or 90Hz)
• Fader Control
• Ground Loop Isolation Circuit
• RCA and High Level Speaker Inputs
• Dimensions : 7"(W) x 4-1/4"(L) x 1"(H)

7-Band Graphic Equalize

Equipped with a full-featured 7-band graphic equalizer, you will enjoy superior control over the audio spectrum with frequency adjustments in the 50 Hz to 16 kHz range over seven bands. This gives you the power to get the most of your sound system, and the ability to contour the sound output to your musical taste.

• TOP RATED CAR AUDIO EQUALIZER | The EQ7X Massive Audio Car Stereo Equalizer is a 7 band graphic equalizer that will correct peaks and dips in sound characteristics associated with most vehicles' interior. This Graphic Equalizer also features a switch to change the LED color from Red to Blue depending on the interior of the vehicle.
• MORE TUNING CONTROL | With Stellar features such as: Adjustable Master Volume Level, Adjustable Subwoofer Level, 2-Channel RCA Aux Input and Adjustable Gain, 7-Band, 1/2 DIN, 8V Line Driver, Auxiliary inputs, 6-Channel / 7V RCA Outputs, you can take full control on how you like your music to sound Clearer, Better, Perfect!
• SAY GOODBYE TO WHITE NOISE | Don't waste your time or money on cheap quality Car Audio Equalizers that produce a lot of background noise. With Selectable 12dB Low-Pass Crossover (60Hz or 90Hz), and Gold Plated Terminals, you're sure to get great crossovers and perfect sound quality.
• EASY TO INSTALL. LONG LASTING. | The Massive Audio EQ7X Car Audio Equalizer is easy to install and produces amazing results for years! The EQ7 is the perfect device to enhance your Car Audio's performance, and the Best Car Equalizer in its class! Dimensions: 7" (W) x 1" (H) x 4-1/8" (D)
• MASSIVE AUDIO QUALITY | Since 1999, Massive Audio has been an industry leader in high performance audio products. Massive Audio laid its roots in high quality audio reproduction through in-house engineering and a dedication to customers.

User questions & answers

Question:	How hard is it to hook up a equalizer to my Kenwood car stereo
Answer:	Depends - But I'd imagine that if you are capable of installing the HU then the EQ should be just as easy. Has the 3 typical: power. ground, remote and then the input and output(s) <-- or whatever way you plan on using the EQ. All else fails, go to YouTube and watch one of the many videos. I tried "how to install a car EQ" and it came back with "about 347,000 results" I bought this EQ and am extremely pleased with what I got for the price of this thing. Buy it. figure out to install it. It is worth it
Question:	Would this make a huge difference with 4 6.5 mids and 2 tweeters
Answer:	It definitely would. Thats exactly what I have
Question:	This can be used to take the 2 rca inputs from head unit and make them multiple rca outputs for a 5 channel amp
Answer:	Yes, I have 2 AMPs connected to it. I have a 4 channel 1000 watt Rocksford Fosgate AMP pushing the highs and mids to the 6x9s and door speakers. And I have a 8000 watt Power Accoustik AMP pushing the Bass. The 1st knob is independent bass that controls my Power Accoustik AMP. The 2nd Knob is the overall volume. So the answer is Yes. It controls my 4 channel AMP and my Mono AMP at the same time.
Question:	Does thing have separate inputs channels for front and rear speakers
Answer:	Having trouble with my 4 channel head unit (Alpine) - I have separate front and rear L/R RCA outputs coming from the head - I plugged the front RCA outputs into the "main" which works ok, but no place to plug in the rear output RCA cables....

Product features

Massive Audio EQ-7X Car Equalizer

The Massive EQ 7X is a half din 7 Band Graphic EQ that will correct peaks and dips in sound characteristics associated with most vehicles' interior that dampens and limits both speaker output and imaging. This EQ provides powerful features in a compact size.

Product description

Every true audiophile should be able to tweak their sound system however they'd like to get the perfect sound. The Audiopipe EQ-709X 7-Band Parametric Graphic Equalizer can help get you there. The universal half-DIN-sized chassis gives you clean mounting options above or below most decks if you have room and the gold-plated RCA input connectors ensure that you always get the most signal. You'll even be able to control the volume of your subwoofer output independently with this EQ. Put yourself in the driver's seat of your music and system with the Audiopipe EQ-709X 7-Band Parametric Graphic Equalizer.

• USER-FRIENDLY: Nickel-plated locking adjustable knobs for user-friendly operation
• CUSTOMIZED CONTROLS: Adjustable subwoofer frequency and subwoofer output and level controls for customized use
• EASY INSTALL: Universal half-DIN chassis for ease of installation
• ADJUSTABLE SENSITIVITY: Active gain pre-amplifiers with adjustable input sensitivity for maximum performance
• SPECIALIZED CONTROLS: Individual left and right sensitivity controls for auxiliary input

User questions & answers

Question:	How many input and outputs
Answer:	Have not received it as of yet
Question:	ese equalisador silve en el puesto del crossover
Answer:	Tú quieres un EQ o un crossover ? Son 2 cosas diferentes
Question:	What are the Dimensions for this Equalizer
Answer:	6 3/4 x 4 3/4 x 1