ARC Audio KEQ7 Owner's Manual

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CROSSOVER AND LEVEL CONTROL

Introduction

Welcome to the Arc Audio family of performance signal processors. A blend of Arc Audio's lengthy experience in performance car audio design combined with our highly skilled engineering staff. You are now the proud owner of the KEQ7. A unique combination of the highest quality components and precision engineering. Whether you are a competitor or simply enjoy faithfully reproduced music, you will definitely appreciate how these products make your system sound. Before you begin read this manual cover to cover (does anyone ever really do that?). Careful design and layout of your system and following the instructions and suggestion in this manual will greatly simplify installation of this product. If at any point you begin to feel overwhelmed, return to your local Arc Audio dealer and let the trained professionals install or tune it for you.

Warning

We build all ARC Audio products to play at high volumes for extended periods of time. Your ears however are not designed for high volume listening. This product can easily generate volumes that can permanently damage your hearing. We urge you to limit your exposure to very high volume sound. You may also find your state has laws governing the volume of an audio system in a car. Please be aware of all local and state laws in you area. A properly tuned and operated audio system will deliver years of enjoyment when used properly.

Warning

Please check the suitability of the installation location before you begin. Do not cut any of the car’s structure. Pay close attention to what is behind the panels or carpet. Often the manufacture will hide wires, computers or other electronic devices in the exact areas you wish to install in.

If you do not have experience with automotive electrical and mechanical systems contact a professional installer. Paying a qualified installer is almost always cheaper then paying a dealership to repair your car.

Running the Cables

Carefully run the power and signal cables through the passenger compartment of the vehicle. Always use a rubber grommet to prevent the power wire from shorting and to reduce the risk of fire.

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FEATURES ______________________________________

1. Active gain preamplifiers with adjustable input sensitivity.

2. Volume control with up to 7 VRMS of output.

3. Seven band parametric equalizer with 12db Boost/Cut.

4. Sub out with independent volume control.

Radio/DVD input selector.

Universal half DIN chassis for ease of installation.

Installation Information

1. The KEQ 7 needs to be installed in the signal path between your source unit and your external amplifier(s).

2. Physically mount the KEQ 7 near the drivers listening position. Make sure the EQ is kept clean, cool, and dry. Don't mount it under a cup holder or in a storage box were it will be covered with the stuff that always seems to collect in our cars.

3. Hook up +12 volt power, ground, and remote turn-on. Make sure the ground is perfectly clean and tight. Remove all the paint and under coat before you screw it down. Don't trust the stock ground. Make a new one.

4. Connect the front output of you head unit to the front input of the KEQ 7.

5. Don't fix the EQ permanently into place until your gains have been set.

6. Adjust the "Input Level" control on your KEQ 7 to match the source unit's output. With the head unit volume at about 75% of Max, adjust the gain control slowly up until you begin to hear clipping or distortion. Now turn the gain down slightly. This is your final gain setting.

7. Now the fun begins. With the EQ still out, begin adjusting the sub crossover. Select the switch up and down and try to determine the best setting.

8. Now start tweaking the EQ controls. It's amazing how much a tiny adjustment to your EQ frequency can change your system.

9. Enjoy the results

Sub Output

Low Pass Crossover

DVD (AUX) Input

DVD (AUX) Input Gain

Main Input

Rear Output

Front Output

Ground

Remote In

+12V (connect to constant power)

Sub Output Level Control

4 6 7 8

Master Volume Control

Input Selector Switch

Fader

50Hz (Bass) Frequency

125Hz (Mid-Bass) Frequency

315Hz (Mid Range) Frequency

750Hz (Mid Range) Frequency

2.2KHz (Mid Mid-High) Frequency

6KHz (High) Frequency

16KHz (High) Frequency

CONNECTIONS AND CONTROLS

SUB LEVEL

VOLUME DVD FADER 50Hz 125Hz 315Hz 750Hz 2.2KHz 6KHz 16KHz

+12 V

GND

REMOTE

SUB OUT

DVD INPUT

MAIN IN REAR OUT

FRONT OUT

DVD GAIN

LOW PASS FREQ.

60Hz

90Hz

LRLRLRLR

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Typical System Configuration

(Your final configuration may very)

Remote Turn-on

+12 V

GND

REMOTE

SUB OUT DVD INPUT MAIN IN REAR OUT FRONT OUT

DVD GAIN

LOW PASS FREQ.

60Hz 90Hz

LRLRLRLR

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Sub Output: Connect to your Subwoofer amp or amps.

Sub Frequency Control: Be sure to make your final adjustments to the Sub

crossover before you mount the unit into the dash of your car. You will need to complete your tuning first.

DVD Input: Connect any extra source to this input. It’s very useful for MP3 players as well as DVD or Game consoles.

DVD Gain: The DVD gain is used to match the level of your main input.

Input: Main Input should be a full range signal from the head unit. If you are

using the Sub Direct Input the signal could be crossover but the EQ will function better if you feed it a full range signal.

Rear Output: Just like it sounds, this is connected to the rear amp.

Front Output: Simply connect to the amplifier driving the front speakers. This is a

full range output so if you plan to run it hard you should use a crossover at this point.

Power Connector: 12 Volt +, Remote and Ground. We recommend using a dedicated 12 Volt+ from the battery and a fresh ground. Remember this EQ has an volt output. It takes a good amount of current to run.

Sub Volume: Or Sub Out level, gives you total control of the Sub Gain at any time.

Master Volume: Controls all Output including the "Sub Out". It is very handy to have one volume under your thumb for "Fast" and easy control.

DVD Input Selector: When this button is pushed in the KEQ 7 will take its input from the DVD input. If you have nothing connected to this input you will have no output.

Fader: Full front/rear control to keep the people in the back seat happy.

EQ Frequency Controls: If you know what an EQ does, you most likely know

what these do. We've crammed 7 bands into the KEQ 7, for ultimate control at your fingertips.

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Specifications

EQ Frequencies (Bands) 50Hz, 125Hz, 315Hz, 750Hz,

2.2KHz, 6kHz, 16kHz

Boost/Cut 12dB

S/N Ratio 100dB

Frequency Response 10Hz - 50kHz +/-1dB

Maximum Output Voltage 7VRMS

THD 0.005%

Input Sensitivity 50mV- 3VRMS

Head Room 20dB

Input Impedance 20k Ohms

Output Impedance 2k Ohms

Stereo Separation 82dB/1kHz

Operating Voltage 11V- 15V

Size 1-1/8"H x 7"W x 4"H

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ARC Audio Warranties all new products against defects in materials and workmanship for a period of ONE (1) YEAR from the original date of purchase from an AUTHORIZED ARC AUDIO RETAILER.

The warranty is not transferable and applies only the original purchaser of the product from an authorized ARC AUDIO retailer. Upon inspection by ARC AUDIO should service be necessary under warranty for any reason due to manufacturer defects ARC AUDIO will, at its discretion, repair or replace the defective product with new or similar condition product at no charge.

THIS WARRANTY DOES NOT COVER INSTALLATION OR DAMAGE

RESULTING FROM ACCIDENT, MISUSE, ABUSE, IMPROPER WIRING, OPERATION OUTSIDE OF THE MANUFACTURERS SPECIFICATIONS, OR AGAINST THE INSTRUCTIONS IN THE OWNERS MANUAL. IN ADDITION ANY PRODUCT THAT HAS BEEN OPENED, TAMPERED WITH OR MODIFIED, OR IF ANY SERIAL NUMBERS HAVE BEEN REMOVED OR ALTERED WILL NOT BE COVERED BY ANY PART OF THE MANUFACTURERS WARRANTY.

All warranty returns should be sent to ARC AUDIO freight prepaid and must be accompanied by proof of purchase (a copy of the original sales receipt). Direct returns from consumers or non-authorized retailers will be refused unless specifically authorized by ARC AUDIO with a valid return authorization number.

All warranty returns must be packaged in original packaging and be accompanied

by a copy of the original printed sales receipt. Product damaged in shipment due to improper packaging will not be covered under this warranty and the customer or retailer will be charged full cost to repair the specific piece of product back to a like new or similar condition.

In no event will ARC AUDIO be liable for incidental, consequential, or other damages resulting from the use of this product. This includes, but is not limited to, damage of hearing, property or person, damage based upon inconvenience or on loss of use of the product, and to the extent permitted by law, damages for personal injury. This warranty gives you specific legal rights, and you may have other rights, which vary from state to state. This warranty applies to products sold and used in the United States of America. In all other countries please contact your distributor.

For warranty and non-warranty repairs, send to:

ARC Audio 4719 Green Leaf Cr. #4 Modesto CA, 95356 209-543-8706

ARC Audio KEQ7 Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual