Technologies Corporation OWNERS MANUAL stereo mixer PL1602

Connecting The PL 1602 - General Suggestions

The actual connections you’ll make to and from the PL 1602 will vary according

to the environment you use it in and the particular equipment you have. In the

“PL 1602 Applications” sections at the rear of this manual, you’ll find some

suggested setups. Here are a few basic rules concerning PL 1602 connections

that will apply in most situations:

• In general, it’s best to make all connections with the PL 1602 and any con-

nected power amplifiers turned off. If you must make connections with the

power on, make sure that the Left/Right faders are completely down (at their

“∞” position). Whenever powering down, bring the Left/Right faders com-

pletely down and turn off the main power amps

first. Wait a few seconds for

their power supplies to discharge and then turn off all connected equipment,

turning the PL 1602 off last.

• Try to use balanced connectors and cabling wherever possible. These kind

of connections do a better job of rejecting extraneous noise and hum and

generally provide a cleaner signal. Although the PL 1602 will accept unbal-

anced connectors throughout, it specifically provides electronically balanced

inputs for all line inputs and for its Main outputs. The wiring diagram below

shows how 1/4" TRS (Tip/Ring/Sleeve) connectors should be wired for use

with these inputs and outputs:

Unbalanced cables use standard 1/4" phone connectors, wired as follows:

• Make one connection at a time and then monitor the incoming signal. If you

hear a distinct hum or buzz, you may have a grounding problem with that

particular device. See the section in this manual entitled “Grounding

Techniques” (pages 14 - 15) for information on how to avoid grounding

problems.

• When using channels 1 and 3, be sure not to connect both a microphone

and line level input simultaneously—use one or the other. The diagram

below shows how your mic connectors should be wired:

TIP +

GROUND

RING -

RING

TIP

SLEEVE

+ SIGNAL

GROUND

+ SIGNAL

GROUND

3 - SIGNAL

1 GROUND

2 + SIGNAL

TO MIXER