D-180 Amplifier Operating Manual 1
CHANNEL ONE The D-180 includes a two channel preamplifier with two separate input jacks and their respective gain controls, Volume 1 and Volume 2. But unlike conventional two channel preamps, these input channels are stacked in series so the output of Channel 1 is fed into the input of Channel 2. This enables the two channels to offer strikingly different gain and tone possibilities: Channel One is for guitar and includes incredible preamp overdrive capability; Channel Two is for bass.
EFFECTS LOOP Two pairs of Send and Return jacks are provided, one pair on the front and one pair on the back of the D-180. So whether you use effects devices on the floor or built into a rack, patching with your D-180 is convenient and precise. The sophisticated Effects Loop circuitry of the D-180 works extremely well. A low impedance "send" amplifier assures high intercompatibility plus low noise.
REAR PANEL FEATURES SPEAKER JACKS Two 4 ohm and two 8 ohm jacks are provided. Unlike transistor amplifiers, the D-180 will produce its full power at 4 and 8 ohms. Furthermore, speaker impedance mismatching is not harmful to the D-180 and perceived loss of power is minimal. When using more than one speaker cabinet, remember that total load impedance goes down as more cabinets are hooked up. For example, if you use one 8 ohm speaker cabinet, use one of the 8 ohm jacks.
