3 sets of rca's

[maddogcsi2004 10+ year member]

Hi, my h/u has 3 rca outs. I have a 4ch amp for tw & 6.5" w up front, jlaudio 250/1 for 2 12" subs for the rear.My problem or ? is how can I just use the front rca's from h/u to run 4ch amp with out using rear rca's. 73 ford f100 reg cab:blush:

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[starkfu 10+ year member]

use RCA Y adatpers on the front RCA's at the amp.

http://www.installer-parts.com/by_item.php?it=mpc-i200y-2f

 

[azbass 5,000+ posts]

does the amp have a "2ch/4ch" switch on it?

 

[Thomas Nicolas 10+ year member]

what kinda of amp is the 4 channel?

 

[maddogcsi2004 10+ year member]

no switch. Can I use front rca and front speaker leads at the same time? amp has speaker wire inputs. Boss GT1600 //content.invisioncic.com/y282845/emoticons/blush.gif.99bc659ee2012b7d826165e26fb5eebe.gif :blush:

 

[starkfu 10+ year member]

I wouldn't,

do what I suggested above

 

[ShakesAllDay 10+ year member]

Curious... why don't you want to use all 4 input channels?

 

[maddogcsi2004 10+ year member]

I dont want to use rear rca's for front speakers.Wouldn't it throw off the whole sound stage thing? I will try the y-adpter idea.//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[ShakesAllDay 10+ year member]

Unless you have a multichannel head unit (DVD, SACD, etc.) the front and rear channels should carry the same signal. Left and right are different (stereo).

You have a 3 RCA outputs (front, rear, sub)? And you have a 4-channel amp and a sub amp. So, why not run front and rear RCAs to the 4-channel, and the 3rd RCA set (I assume is sub preout) to the sub amp?

You can use the y-adapters, but you will lose fading ability (which, IMO, is important in setting up a proper soundstage - Of course, you could simply adjust front/rear gains to do the same thing, just more hassle.), and you will cut down on the quality (voltage) of the input your amp will see.

Question... are you bridging the 4-channel amp to 2-channels to run a single pair of speakers? If this is the case, then the y-adapters may be a better option. Split the front-right channel up and plug into front right and left (for right speaker) and split the front-left channel up and plug into rear right and left (for left speaker).

 

[maddogcsi2004 10+ year member]

Thanks for all the info.