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Owner’s Manual
for 320QE, & 480QE
Four Channel Power Amplifiers
www.coustic.com
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www.coustic.com Welcome FEATURES …to the Coustic world of power and clarity. These new Coustic QE Series 4-channel power MULTI-FUNCTION / MULTI-CHANNEL CIRCUIT DESIGN amplifiers deliver the cleanest music you’ve ever heard at any power level in the 12-volt environ- The 4-channel 320/480QE amplifier can be configured as a 4-, 3- or 2-channel amplifier with ment. built-in high-pass/low-pass filters. Each of the front and rear stereo amplifiers can be bridged to Besides their sleek contoured desig
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www.coustic.com 11. REAR CHANNEL INPUT SENSITIVITY LEVEL CONTROL (SENS) CONTROLS, INDICATORS, AND TERMINALS The input sensitivity level can be varied from 5.0 volts to 100 mV depending on the output voltage of the source unit (refer to sub-section titled INPUT SENSITIVITY ADJUSTMENT). FRONT PANEL 512 7 1 2 8 9 12. REAR CHANNEL HIGH IMPEDANCE INPUT To be connected to RCA pre-amp outputs from a source unit (i.e., radio, tape deck or CD player). If there is only one input available, connect it to
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www.coustic.com SPEAKER IMPEDANCE SYSTEM CONFIGURATION Although extremely low impedance speaker loads will not damage the amplifier, for stereo mode, we recommend speaker loads of 2, 4 or 8 ohms; for bridged mono mode, 4 or 8 ohms. By purchasing the 4-channel 320/480QE amplifier, you are already one step closer to experienc- (Note: In bridged mono mode, the amplifier sees only half of the speaker impedance). ing the purest and most natural sound quality in the automobile environment. To take
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www.coustic.com WIRING LAYOUT INSTALLATION Once the location of all the components has been determined, plan the best routes for all the Caution: Please follow all the installation recommendations and instructions in this manual. necessary wiring, making sure that the wires are easily accessible without dismounting the vari- Installing and/or using the amplifier in methods other than those outlined herein may reduce ous components. the performance capability of the amplifier. Any such installa
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www.coustic.com Connect the Amplifier to the Speakers. Use thicker speaker wires (e.g. 8 - 10 gauge desirable) Connect the Amplifier to the Battery for these connections. Heavy gauge wire is preferred. Add a fuse or circuit breaker to any power wire that runs through a firewall or sheet metal to protect the battery, the vehicle, and more importantly, you. It is highly For Stereo Mode recommended that installation is carried out by an authorized Coustic dealer. 1. Connect the front left negative
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www.coustic.com CROSSOVER SELECTION FINAL SYSTEM CHECK The amplifier has built-in high-pass/low-pass filters for both front and rear channels that can be defeated by sliding the switch to the OFF position. INPUT SENSITIVITY ADJUSTMENT The Input Sensitivity Control is located on the Front Panel. The objective of input sensitivity 1. When the high-pass is selected, the amplifier will be devoted to mid/tweeters. adjustment is to match the output of the source unit with the input of the amplifier.
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www.coustic.com A B CD-328 A B CD-328 CD Changer Control Figure 12: Typical Full Range System A B CD-328 CD Changer Control Figure 14: Typical High/Low pass System with two (2) amplifiers Figure 13: Typical High/Low pass System with one amplifier 14 15
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www.coustic.com TROUBLE-SHOOTING SECTION SYMPTOM PROBABLE CAUSE SYMPTOM PROBABLE CAUSE 1 No power Check connections to the amplifier's Ground, B+ & Remote 8. Whining noise when Reroute power cable from the battery to the source unit terminals. Check connection at "+" terminal of the battery. engine is running with noise directly, bypassing the battery terminal in the fuse box. Check the remote turn-on terminal. Ensure it receives power varying with the accelerator Check power connections to be
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www.coustic.com Limited Warranty Important Notice to Consumer: SPECIFICATIONS: Coustic offers the following warranty to the ORIGINAL PURCHASER of COUSTIC products within the period stated herein: 320QE 480QE Rated Power @ 14.4 V (0.1 % THD) : 4 x 40 Watts 4 x 60 Watts Coustic warrants all new products against defects in material and workmanship for 4 Ohm Stereo a period of ONE (1) YEAR from date of original purchase. The limited warranty is EXTENDED to TWO (2) YEARS from date of original purcha
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7676 S. 46th St. Suite 2020 Phoenix, AZ 85040 TEL: (602) 438-2020 FAX: (602) 438-7313 A Division of Mitek Corporation Copyright © 2000 • All Rights Reserved www.coustic.com
