Yorkville PGM8 User Manual download pdf (Page 5)

shield tab making sure that it does not touch anything else. Now re-assemble the plug

and mark it with some tape for future reference. This will be the end that you plug into

the unbalanced music source (this will also work with an RCA connector).

For best performance when connecting turntables, a phono RIAA pre-amplifier must

be used to connect to the PGM8 inputs.

Connecting signals to both types of inputs on any one channel (MIC and LINE in) is

NOT recommended. To do so may change the gain of the input circuit.

3. Gain Control

PGM8 features active channel input circuitry with exceptionally high audio headroom. The

Gain control adjusts the input gain level to match it with the input audio signal level.

There are two gradation circles on the gain control. The outer one (-24 dB to +60 dB) is

the gain for the Mic Input, the inner one (-36 dB to +45 dB) is for the Line input. Since

this control has a range of 84 dB, it presents the user with a wide range of gain control.

Here’s a quick way during a sound check to ensure that the Gain is adjusted correctly for

the highest headroom and lowest noise. First turn the Channel Fader to the infinity symbol.

With a music source playing into the mixer’s channel turn the Gain control clockwise until

the Set Level LED begins to flash. Having the Set Level LED flashing shows you that you have

the optimum gain setting for the music level on that channel input. Having the Set Level

LED remain on continuously indicates that you should turn down the Gain control until the

Set Level LED is flashing. Having the Set Level LED remain on continuously indicates that the

input audio compressor is active. Now turn up the Channel Fader to the desired audio level for

the overall music mix. How to use the input audio compressor is explained below.

The PGM8’s Clip LED will turn on at 3 dB below the onset of actual clipping. It is

acceptable to have this LED flash occasionally during music peaks. You will find that

this or any audio system performs with less distortion and less noise when the gain

controls are all set properly.

4. Input Channel Audio Compressor

Each of the mono input channels of the PGM8 (channels 1-4) have an internal dual-

slope soft-knee audio compressor. The PGM8’s compression function is suitable for

bass guitars, percussive sources, and vocals.

A compressor reduces the dynamic range of the music providing a more constant

level. Like having a sound engineer dynamically adjusting the gain of each channel

for the optimum audio level.

The PGM8 compressor works automatically in the background. It can reduce clipping of

the audio signal during loud passages in the music, or adjusted by the user providing a

tighter sound typically heard in audio recordings. You can adjust how much compression

you want with the input channel Gain control.

Here’s how to use the compressor. In automatic mode, set the Gain level so that the

Set Level LED is just blinking to the music. The compressor will remain off until someone

yells into the microphone or there is a loud percussive sound then the compressor will

reduce the gain reducing the possibility of clipping. To adjust for little to no compres-

sion, have the music source playing into the input channel. Turn up the input channel

Gain control to the point where the Set Level LED is just blinking with the music. At this

point the full dynamic range of the music source will be experienced. Continuing to turn

the input channel Gain control clockwise, the music will get louder. To maintain the same

audio level turn down the Channel Fader for the channel being adjusted. The further the

input channel Gain control is turned clockwise, or the louder the music source becomes,

the greater the compression will be experienced.

If the Clip LED blinks occasionally then the maximum amount of compression has been

reached. If the Clip LED remains on for longer periods, turn down the Gain level until

the Clip LED blinks occasionally.

ClipSet Level

Pan

EFX

Mon

Low

80Hz

Mid

2.5kHz

High

12kHz

80Hz

Clip

Mute

-15 +15

Gain

mic

+35

+20

+40

-24 +60

+10

-10

-36+45

line

+30

+20

-20

+10

Gain

Control

Channel

Fader

1 2 3 4 5 6 7 8 9 10 ... 27 28

Comments to this Manuals

No comments

Yorkville PGM8 User Manual Page 5

Comments to this Manuals

Related products and manuals for Acoustics Yorkville PGM8