EX 280 EX 520 EX 480 EX 760 * 2ohm 2ch Full-Range Amplifier 4ch Full-Range Amplifier Stable * Variable LPF / HPF / Bass Booster
EX 280 / 520 / 480 / 760 INTRODUCTION Our Amplifiers provide high-performance sound reinforcement for your mobile audio equipment. Its versatility enables compatibility with optional Equalizers, Frequency Dividing Network Crossovers, and other audio processors in a customized system. The Multi-Mode bridging capabilities allow flexibility in hosting several different speaker configurations.
EX 280 / 520 / 480 / 760 PLANNING YOUR SYSTEM Before beginning the installation, consider the following: a. If you plan to expand your system by adding other components sometime in the future, ensure adequate space is left, and cooling requirements are met. b. Should you use high or low level inputs? Your Amplifier has been designed to accept either High-Level(speaker outputs from your radio) or Low-Level (Pre-Amp outputs from your radio) signal source.
EX 280 / 520 / 480 / 760 CONNECTING THE POWER CAUTION : AS A PRECAUTION, IT IS ADVISABLE TO DISCONNECT THE VEHICLE’S BATTERY BEFORE MAKING CONNECTION TO THE +12 VOLT SUPPLY WIRING(Fig. 1) 8 GAUGE (Thicker if planning for additional Amplifiers) wire is recommended for both the power and ground wires. 16 Gauge, for the remote turn-on wire. Both types available at most Mobile Audio Dealers or Installation Shops.
EX 280 / 520 / 480 / 760 INPUT GAIN CONTROL The input sensitivity adjustments range from 0.2V to 9V to easily integrate with any quality, aftermarket or source unit. AUXILIARY OUTPUT The Aux outputs offer easy system expansion. Routing signal from a source unit, pre-amplifier or equalizer is a matter of routing RCA' s into the RCA inputs and out through the line-level outputs to the next amplifier. X- OVER FULL-PASS When the switch is in the FULL position, the signal is bypassed.
EX 280 / 520 / 480 / 760 BASS BOOST Varies from 0 dB to 18dB of boost. Frequency adjustment control for bass control filter.
EX 280 / 520 TWO CHANNEL CONFIGURATION 1. 2channel stereo configuration REAR PANEL FRONT PANEL 2. 2channel bridged configuration REAR PANEL 1. 2Channel Stereo Configuration Lowest recommended impedance is 2ohm stereo RCA inputs are connected to both left and right channels Gain controls to be set to match input source Line output configured for stereo operation 2. 2Channel Bridged Configauration.
EX 280 / 520 TWO CHANNEL CONFIGURATION 3. 2Channel Trimode Configauration.
EX 480 / 760 FOUR CHANNEL CONFIGURATION 1. 4channel stereo configuration FRONT R CH FRONT L CH FRONT PANEL REAR PANEL REAR L CH REAR R CH 2. 4channel bridged configuration FRONT L/R CH REAR PANEL 1. 4Channel Stereo Configuration Lowest recommended impedance is 2ohm stereo RCA inputs are connected to both left and right channels Gain controls to be set to match input source Line output configured for stereo operation REAR L/R CH 2. 4Channel Bridged Configauration.
EX 480 / 760 FOUR CHANNEL CONFIGURATION 3. 4Channel Trimode Configauration.
EX 280 / 520 / 480 / 760 TROUBLESHOOTING Before removing your Amplifier, refer to list below and follow suggested procedure. Speakers and their wires should be tested first. No Output: a. confirm that all terminal strip connections are firmly connected. b. Check the in-line and built-in fuse both the "12V" and " Remote" terminals must have 12V. Your ground terminal should read ground. c. Confirm that signal source(Car Radio/Deck, EQ, X-over etc.)is connected and is supplying output signal.
- 13 10k Ohms 100 Ohms 25 Amp x 2 12.2"x2.4"x8.7" 10k Ohms 100 Ohms 25Amp x 1 8.7"x2.4"x 8.7" : : : : : 200mV-9V EX 520 520W 130W x 2ch 180W x 2ch 360W x 1ch 0.3% 0,1% 95dB 75dB 10Hz-35kHz 30Hz-250Hz 40Hz-1KHz 0dB - 18dB 200mV-9V EX 280 280W 70W x 2ch 100W x 2ch 200W x 1ch 0.3% 0,1% 95dB 75dB 10Hz-35kHz 30Hz-250Hz 40Hz-1KHz 0dB - 18dB : : : : : : : : : : : : : : 12.2"x2.4"x 8.7" 10k Ohms 100 Ohms 40Amp x 1 200mV-9V EX 480 480W 60W x 4ch 90W x 4ch 180W x 2ch 0.
WARRANTY GUIDES & PROCEDURES If trouble develops, reture the product to your Ample Audio dealer prepaid along with proof of the date of original purchase and the name of the original dealer. The dealer will repair or at manufacturer’s option, replace the product under the terms of the warranty. The product will be returned prepaid to you. Ample Audio nor its dealers will be responsible for shipping damage if units are improperly packed.
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