![]() ![]() The Reference705s will accept up to 4 gauge power and gr ound cables, which is the only size recommended. When operated in the 5 channel mode with 2 pairs of inputs, the lowpġ2 INS TA LL ATION STEP 5 WIRING POWER AND GROUND To assure maximum output from the Reference705s, use high quality, low - loss power and ground cables. If your source unit has front and rear outputs, you can take advantage of its fading capability by driving the Reference705s in 5 channel mode with two pairs of inputs. Before installing the amplifier, make certain the switches on the bottom are sġ1 SELECTING INPUT MODES The Reference705s can be driven with either one, two, or three pairs of stereo inputs. The Reference705s can drive a full system without need of an outboard electronic crossover. This allows the Reference705s to maximize power and efficiency at impedances ≥ 1 Ohm in “High Power” mode, or down to 1/2 Ohm in ?ġ0 SELECTING THE CROSSOVER MODES The Reference705s incorporates a sophisticated, fully adjustable electronic crossover for each of its two pairs of channels and subwoofer channel. 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 voĩ INS TA LL ATION 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. +12V - Connected to a fuse or circuit breaker, then to the battery's positive poĨ 4 Ohm Sub Channel Watts 12 volts 14.4 volts 0 50 100 150 200 250 REFERENCE POWER SUPP LY DESIGN The Reference705s employs an extremely efficient unregulated pulse - width modulated power supply. High Current LED - Indicates amplifier power on in "High Current" mode. High Power LED - Indicates amplifier power on in "High Power" mode.
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