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Soundstream reference 705s12/30/2023 ![]() ![]() INSTALLATION STEP 3 SELECTING INPUT MODES The Reference705s can be driven with either one, two, or three pairs of stereo inputs. After setting the switches, be sure to install the hole plugs included with the amplifier. Before installing the amplifier, make certain the switches on the bottom are set to the correct positions. The Reference705s can drive a full system without need of an outboard electronic crossover. ![]() INSTALLATION STEP 2 SELECTING THE CROSSOVER MODES The Reference705s incorporates a sophisticated, fully adjustable electronic crossover for each of its two pairs of channels and subwoofer channel. The circuit operates by selecting a set of power supply voltage rails best suited to your particular application. This allows the Reference705s to maximize power and efficiency at impedances ≥ 1 Ohm in “High Power” mode, or down to 1/2 Ohm in “High Current” mode. INSTALLATION STEP 1 SETTING THE HIGH POWER/HIGH CURRENT SWITCH (applies to subwoofer channel only) The Reference705s’ subwoofer channel can be switched between “High Power” and “High Current” modes. added continuous power with higher voltages (see chart below.The two major advantages of the unregulated power supply are: Like the rest of the REFERENCE amplifiers from Soundstream, the Reference705s is rated at 12 volts but is designed to take advantage of the additional voltage available when the vehicle is running. REFERENCE POWER SUPPLY DESIGN The Reference705s employs an extremely efficient unregulated pulse - width modulated power supply. Crossover Adjustment Pots - for the internal high pass fil Input Level - Subwoofer channel level control. Low Pass Crossover Adjustment Pot - pass filter. High Current LED - Indicates amplifier power on in "High Current" mode. Flexible Input Sensitivity accepts voltages from 200 mV (80 mV on the subwoofer channel) to 5.0 V, which permits maximum output from the amplifier with virtually any source.Drive Delay Muted Turn-on/off Circuit - A unique circuit which completely eliminates amplifier - related turn - on/off noises.Six Dual Discrete Class A Drive Stages - Over six times the drive current of most amps, which guarantees maximum performance into any load.High Power/High Current Capability (subwoofer channel only) - Soundstream’s exclusive circuitry permits customization of your amplifier to its particular applicat ion - High Current, for ultra - low impedance loads (multiple subwoofers, less than 1 ohm) or High Power, for hīe stable into any impedance, down to 1/2 ohm.Uncompromising Design and Construction including mil - spec glass epoxy circuit boards and high current custom gold - plated solid brass connections that will accept up t o 4 gauge power/ground wire.9 Selecting Crossover ModesĭESIGN FEATURES Soundstream amplifiers are the result of American Please retain this manual and your sales and installation receipts f or future reference. To maximize the performance of your system, we recommend that you thorou ghly acquaint yourself with its capabilities and features. Your Soundstream REFERENCE amplifier will outperform any other amplifier in the world. ![]()
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