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Audio Control EQL Owner's Manual

Summary of EQL

  • Page 1

    Equalizer/level matcher 22410 70th ave. W., mountlake terrace, wa 98043 phone 425-775-8461 • fax 425-778-3166 www.Audiocontrol.Com ® making good stereo sound better ® ® owner’s manual owner’s manual owner’s manual owner’s manual owner’s manual tm concert series.

  • Page 2: Quick Installation Info

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual quick installation info quick installation info quick installation info quick installation info quick installation info refer to figures 4, 5, and 6 (on pages 9, 10, and 11) when installing the eql equalizer. The unit is shipped fr...

  • Page 3: Congratulations!

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ we design, test, and build each eql equalizer right here in the misty rain forests 1 of the pacific northwest. When you look inside the rugged two-piece steel chassis, you’ll find we use only premium electronic parts and gold- plated rca jacks. It all adds up t...

  • Page 4

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual ä dual bandwidth equalizer – 13 bands the dual bandwidth design of the eql concentrates more control in the lower bass frequencies where the interior of an automobile causes problems. The higher frequency controls are spaced on oct...

  • Page 5: Import

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ ä high level inputs the eql is so flexible that you don’t even need to have pre-amp outputs on your deck to enjoy the benefits of total control. Speaker level signals can be run directly into the eql, equalized and level- matched to use any aftermarket amplifie...

  • Page 6

    Concert series owner’s manual figure 1.Top panel layout for eql equalizer/level matcher. 4.

  • Page 7: Description

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ description description description description description we’ve created the eql equalizer/level matcher to make any system sound better. This performance match™ component 2 features straightforward connections and easy-to-adjust equalizer and level controls. ...

  • Page 8

    Concert series owner’s manual connections and equalizer bypass connections and equalizer bypass connections and equalizer bypass connections and equalizer bypass connections and equalizer bypass the front panel contains power and input/ output connections, as well as an equalizer bypass button, as s...

  • Page 9

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ ○ ○ ○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ programmable f programmable f programmable f programmable f programmable frequency match requency match requency match requency match requency match filter module and ground isolation filter module and ground isolation ...

  • Page 10: Installation

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual installation installation installation installation installation we strongly suggest you have the eql pro- fessionally installed, but if you are doing it solo this section lists the procedures you’ll need to install the eql in your...

  • Page 11

    Figure 4. Wiring diagram for eql series ii in a single amplifier system. Installation 9.

  • Page 12

    Concert series owner’s manual figure 5. This wiring diagram shows a 3-way system that uses an eql with an esp-2 spatial restoration processor and a 4xs used as a 3-way crossover. 10

  • Page 13

    Figure 6. Wiring diagram shows an eql with an audiocontrol system90 powered signal processor in bi-amp mode. Installation 11.

  • Page 14

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual warning warning warning warning warning before installation, turn off the power to the head unit or radio and disconnect the negative (-) lead of your vehicle’s battery. Mounting the eql mounting the eql mounting the eql mounting t...

  • Page 15

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ (i.E.,“-18”). Set all output level controls for maximum attenuation (i.E.,“- ∞”). Press the equalize button in. 4. Reconnect the vehicle’s negative (-) bat- tery lead and proceed to the next section. A a a a adjusting the eql djusting the eql djusting the eql d...

  • Page 16

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual are in a real hurry, you can set the equal- izer by ear. 10. Listen to the vocals and instruments, and trying cutting the frequencies in the mid- bass (90 to 250 hz) and mid-range (2 to 4 khz) spectrum. The mid-bass response is usu...

  • Page 17

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ installation note: if the (yellow) overload indicator comes on, something is boosted too much. Either bring down the suspect frequency control or adjust the input gain controls to reduce the overall gain. 12. As a final check, press the equalize switch out and ...

  • Page 18: Upgrading A F

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual upgrading a f upgrading a f upgrading a f upgrading a f upgrading a factory actory actory actory actory (oem) system (oem) system (oem) system (oem) system (oem) system replacing a factory (oem 3 ) radio gets harder each model year...

  • Page 19

    17 upgrading factory systems figure 7. Wiring diagram shows a factory (oem) system upgraded with the eql and an audiocontrol system90 powered signal processor to create a superlative 2-way system..

  • Page 20: Making Y

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual 7200 frequency (in hz) example – for a 25 hz filter, the formula yields a resistor with a value of 7200 25 note: use only resistors having a tolerance of five percent or better (i.E., 5%, 2%, etc.). Warning warning warning warning ...

  • Page 21

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ figure 8. Removing the top panel lets you access the internal programmable frequency match module and bypass switch. Doing the deed doing the deed doing the deed doing the deed doing the deed 1. Turn the system power off. 2. Remove the top panel and locate the ...

  • Page 22: Troubleshooting

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual problem problem problem problem problem t t t t try this ry this ry this ry this ry this whine or buzz move the ground selector switch to another posi tion. See page 19. Headache turn down the volume. T t t t troubleshooting rouble...

  • Page 23: Unabashed Plug!

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ unabashed plug! Unabashed plug! Unabashed plug! Unabashed plug! Unabashed plug! In addition to the eql, we manufacture a unique line of high-quality performance match components , all designed to work together to give you the best-sounding system, regardless of...

  • Page 24: Warranty

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual w w w w warranty arranty arranty arranty arranty people are scared of warranties. Lots of fine print. Lots of noncooperation. Months of waiting around. Well, don’t be scared of this warranty. It’s designed to make you rave about us...

  • Page 25

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ 4. You cannot let anybody who isn’t: (a) the audiocontrol factory; (b) an authorized service center; or (c) someone authorized in writing by audiocontrol service your eql. If anyone other than (a), (b) or (c) messes with your eql series ii, that voids the warra...

  • Page 26: Block Diagram

    Concert series owner’s manual block diagram figure 9. Block diagram of the eql equalizer/level matcher. 24.

  • Page 27: Specifications

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ specifications all specifications are measured at 14.4 vdc (standard automotive voltage). Frequency response: 10 hz to 20 khz ± 1 db total harmonic distortion (thd): 0.005% signal to noise ratio (snr): 110 db at full output maximum output level: 7.5 volts rms i...

  • Page 28: Doodle Here!

    ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○ concert series owner’s manual doodle here! Doodle here! Doodle here! Doodle here! Doodle here! 26.