Autotek 7004B Four-Band Equalizer/Two way Crossover User Manual

INTRODUCTION

Thank you for selecting the 7004B Four -Band Equalizer/Two way Crossover.
This model is specially designed to provide the multi-speaker system of your vehicle with more improved sound performance. It is an
excellent unit which has both PREAMP EQUALIZER and CROSSOVER, in a compact ½ din chassis to fit into your car dashboard
under your car stereo system. This unit also comes with special mounting bracket to install it under your dashboard or in your glove
compartment.
Now it’s time to consider how you can maximize the fun and excitement your equipment offers. Used wisely, your sound equipment
will provide a lifetime of fun and enjoyment.
Please read this manual before attempting any installation so that you can get good results, period.

1) INPUT 1/INPUT 2

These are the input connections to the equalizer which enable L/R of INPUT 1 and L/R of INPUT 2 to be connected to your head unit.
Of course you can select either INPUT 1 or INPUT 2 separately by the INPUT SELECTOR. If you connect the radio source and the
CD source separately to INPUT 1 and INPUT 2, you can choose one of the two by the INPUT SELECTOR SWITCH (6).

2) INPUT GAIN CONTROL

The gain control is used to match the input signal from the source unit.
Please adjust the gain control to prevent any distortion at high volumes and to reduce hiss at low volumes. Please turn on the audio
system before you adjust the gain control.
Be sure to repeat this procedure for the 2nd input source.

3) VOLUME CONTROL

The audio level (volume) is increased or decreased with this VOLUME control.
NOTE: The adequate input signal must be provided from the input source for the VOL -Level control to function properly.

4) SUBWOOFER CONTROL

The subwoofer level (volume) is increased or decreased with this VOLUME control.

5) FADER CONTROL

This allows you to select FRONT or REAR.
By adjusting this FADER CONTROL to your desired level, you can choose your designated amplifiers (FRONT/REAR) to which the
full signal is distributed.

6) INPUT (1, 2)

This allows you to select INPUT 1 or INPUT 2.

7) SUB BASS CONTROL

This allows 120Hz frequency to be increased or decreased.

8) MID BASS CONTROL

This allows 120Hz frequency to be increased or decreased.

9) MID RANGE CONTROL

This allows 2.2KHz frequency to be increased or decreased.

10) TREBLE CONTROL

This allows 12KHz frequency to be increased or decreased.

11) FRONT/REAR OUTPUT

The L/R of FRONT or REAR are HIGH PASS OUTPUTS.
These are connected to your vehicle’s power amplifiers.

12) SUBWOOFER OUTPUT

The L/R of subwoofer or LOW PASS OUTPUTS when crossover is used.
These are connected to your vehicle’s SUB amplifiers.

13) STEREO MONO SELECTOR

Allows you to change the subwoofer output from stereo to mono, thus facilitating single subwoofer installations.

14) FRONT/REAR SUBWOOFER FREQUENCY SWITCH

The switch allows you to select (-) 3 dB frequency of both FRONT/REAR/SUBWOOFER L/R. You can control equalizer at FULL
RANGE when equalizer is on.

15) POWER CONNECTOR

Plug the power harness labeled into the power jack. When connecting the harness to the +12 volt DC supply, please be sure that the
connecting +12 volt DC and ground wires are of adequate thickness to handle the current. The lead marked “REMOTE” is connected
to the power aerial lead of the head unit. If your head unit does not have a power aerial lead, then connect the “REMOTE” to +12 volt
DC through a toggle switch. Be sure to turn the switch off when your radio is not in use.

You must use a fused line for the +12 volt DC power input to protect against short circuit.