Inputs | Peavey 118P instruction

Inputs (5)

The left (5a) and right (5b) channel input jack groups consist of a combo female XLR and 1/4" TRS connector and a male XLR in parallel. This arrangement allows the audio input signal to be daisy-chained. In other words, you could hook-up other power amps, powered speakers, more QW 118Ps or other devices. Unbalanced left and right RCA-type input jacks (5c) are also provided for CD players or similar units. A Mono switch (5d) feeds the left input to both channels when not running in stereo mode. The adjacent yellow LED (5e) lights when the unit is placed in mono mode.

Master System Level (6)

When used in conjunction with the kosmos® controls (7), this knob controls the overall system gain (volume) of the QW™-118P system. The adjacent red LED (11) indicates activation of the built-in DDT™ compression. See #11 below for more details on DDT compression.

kosmos (7)

The kosmos is a low frequency energy and stereo imaging enhancement system that turns the minor shocks of an input signal into a sound that is off the Richter scale. And, it’s included in the QW 118P. The Quake/Sub level knob (7a) sets the powered subwoofer output and simultaneously sets the amount of kosmos Quake function. The Xpanse knob (7b) controls the amount of high frequency expansion applied to the high pass outputs (8) or the Speaker Level Outputs (9). The bypass switch (7c) bypasses the kosmos entirely. When in bypass mode, the Quake/Sub Level knob (7a) sets the powered subwoofer level without any kosmos effect. The adjacent blue LED (7d) lights up when kosmos kicks in.

High Pass Output (8)

These left and right line-level, high-pass filtered outputs are also controlled by the Master System Level control

(6). They provide a 120 Hz high pass output for a powered speaker system or a power amp and passively crossed over speaker system.

Speaker Level Powered Outputs (9)

The left and right speaker level outputs allow connection of a left and right, passive speaker system to provide a complete stereo sound reinforcement or DJ system. This signal is passively high-pass filtered to protect the speakers from excessively low bass.

Ground Lift Swithces (10)

These switches provide for breaking ground loops on the input channels (10a) or the high pass outputs (10b). Leave these in the Normal position unless there is a need to break such a ground loop (i.e., unusual system hum or noise). They can be switched independently.

DDT LED (11)

This LED will light at the onset of clipping. If the LED is flashing quickly and intermittently, the unit is just reaching the clipping threshold. A steady bright glow means the unit is clip-limiting, or reducing gain to prevent severely clipped waveforms from reaching the speakers. During initial power-up, the DDT LED will light, indicating that the RampUp™ gain reduction circuitry has activated.