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<blockquote data-quote="jcraft" data-source="post: 8545390" data-attributes="member: 645700"><p>I am using a Sony HU and the HU has one set of Rear/sub RCA outputs only and no front RCA outputs so in the HU steup you can pick if you want the RCA outputs to be rear or sub ( if set to sub I can change the output volume. So I have both pairs of RCA outputs back to a Rockford Fosgate 300-4 ( 50x4) amp. On the 4 inputs to this amp I have connected y fittings so both RCA&#039;s feed all the inputs. I also have another Y in one of the lines to feed a separate amp for the subwoofer and front and rears are off the fosgate amp channels. I have the RCA output set on HU to Sub and have set the sub output all the way up and then set my gains. The system sounds pretty decent but want to make sure I have the best layout for the signal inputs to gain the best overall sound quality. I believe the RF has pass throughs so maybe I can use a pass thru to feed the sub amp if Y&#039;s do something to the signal. The only problem I have now is no control over the sub volume from the HU. At some point I may upgrade the HU so it has front and Rear RCa&#039;s. Thx for help</p></blockquote><p></p>

[QUOTE="jcraft, post: 8545390, member: 645700"] I am using a Sony HU and the HU has one set of Rear/sub RCA outputs only and no front RCA outputs so in the HU steup you can pick if you want the RCA outputs to be rear or sub ( if set to sub I can change the output volume. So I have both pairs of RCA outputs back to a Rockford Fosgate 300-4 ( 50x4) amp. On the 4 inputs to this amp I have connected y fittings so both RCA's feed all the inputs. I also have another Y in one of the lines to feed a separate amp for the subwoofer and front and rears are off the fosgate amp channels. I have the RCA output set on HU to Sub and have set the sub output all the way up and then set my gains. The system sounds pretty decent but want to make sure I have the best layout for the signal inputs to gain the best overall sound quality. I believe the RF has pass throughs so maybe I can use a pass thru to feed the sub amp if Y's do something to the signal. The only problem I have now is no control over the sub volume from the HU. At some point I may upgrade the HU so it has front and Rear RCa's. Thx for help [/QUOTE]

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