Guru wiring question

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Mar 1, 2010 | 07:09 AM

De_Vette

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Melting Slicks

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From: Humble TX

St. Jude Donor '09-'10-'11-'12

Guru wiring question

I have the DNX6140 which only has pre-amp outs for front and rear(or sub) Not a seperate sub out.

I am going to be using the Alpine PDX 4.150 and Polk SR6500 6.5s

The Polks crossover accepts seperate power for mids and tweeters. The Alpine will handle this.

The question is: I want to add a Sub with additional amp. Since I'm going to need the rear pre-amp from the HU for this, I'm wondering if I can use a RCA splitter for the front pre-amp output so that I can feed the front and rear inputs on the Alpine Amp?

Mar 1, 2010 | 09:38 AM

Capt Steve

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From: Lake Worth Florida

Yes

Mar 1, 2010 | 09:57 AM

simpleman68

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From: Bethlehem PA

Yes you can. You'll be reducing the output voltage of the pair that you split, but you can adjust for that by setting the gains of the amps to match each other.

Scott

Mar 1, 2010 | 04:48 PM

nickwfd92

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From: Dover De

Does the PDX have a out on the amp for Subs, some do and you can just run a small rca from the one amp to the other.

Mar 1, 2010 | 05:03 PM

simpleman68

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From: Bethlehem PA

Quote:

Originally Posted by nickwfd92

Does the PDX have a out on the amp for Subs, some do and you can just run a small rca from the one amp to the other.

The 1.600 PDX does have a pair of outputs, but I'd rather have them out of the 4.150. Can be done in a pinch though.
If his head unit does not have the ability to set a crossover point for the sub, and I assume it doesn't as it doesn't have a set of outputs for a sub channel, then he'd probably still be better off splitting the source signal from the HU.

My old PPI had a pair of outputs on the multi-channel amp and you could select whether you wanted to use front, rear or a combo of them both for throughput.

Scott

Mar 1, 2010 | 05:06 PM

pentavolvo

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From: Dyer IN

Cruise-In IX Veteran

IMO run the rears/sub from the headunit straight to the mono amp. Then run the front output from the headunit to the pdx4.150 and use y adapters

Mar 1, 2010 | 05:23 PM

simpleman68

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From: Bethlehem PA

Quote:

Originally Posted by pentavolvo

IMO run the rears/sub from the headunit straight to the mono amp. Then run the front output from the headunit to the pdx4.150 and use y adapters

Simply put and I forgot that his HU does have rear/sub outputs. I'd then expect he has the ability to control the x-over point.
We'll find out Saturday.
Scott