Which Setting????

[2008screw 10+ year member]

Hey all,

I am bridging my amp to a set of comps. Not sure which setting I should set the amp to? The amp is an Alpine PDX-4.150

Input Channel Selector Switch

a) Setting this switch to “1 + 3/ 2 + 4” will sum

the CH-1 and CH-3 input and send it to

CH-3 while the CH-2 and CH-4 inputs are

summed and sent to CH-4.

b) Set this switch to “3/4” to have the inputs of

CH-3/4 accept independent input signals.

An example of this application would be

the use of a head unit with dual pre-amp

outputs.

c) Setting this switch to “1/2” will send the signal

at the inputs of CH-1/2 to CH-3/4 of the

PDX-4.150. This eliminates the need for

“Y”-adaptors when using a head unit with

a single pair of pre-amp output.

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[Twilight 10+ year member]

You probably want setting ©. That means you can just run a pair of RCAs (as typical) and plug it into the 1+2 input, without using a Y-adapter to split the signal to both sets of inputs.