Thread: Bridging HU amp?

well if you don't care about the ability to have fading (forward/back) and just stick with stereo then I think that you can just put the front speakers in parallel with the rear amp (i.e. but both '+' to the '+' on the speaker and both '-' to the '-' on the speaker). However if the 2 signals are even slightly out of sync then it might really screw up your speakers.

Honestly I wouldn't bother doing that. What HU do you have and what speakers do you have and what amp? You'll prolly blow your speakers trying to do that

You'll get little benefit from doing that, you'll just stress (and possibly blow) the output amp on your head unit. Bridging is not putting in parallel (but then you knew that, right?).

Assuming the amps are not bridge amps to start with, what you need to do is get the rear speaker signal in anti-phase to the front speakers. Then use the + signal of left front and the + signal of left rear and use these to drive your left speaker. Same with the right. That's the basics of a bridge configuration. If the amps are already bridge config, you'll see no benefit though, since you've thrown away half your voltage swing by ditching the -ve line on each amp (which on a bridge amp is not ground).


Rob

I'd go with Rob's answer.

Head units are often already bridged - thereby enabling them to make outlandish claims as to the output.

Bridging them again would be Very Bad.

Oh - I'd be running the front speakers of the amp - not the rears (unless the rears happen to be subs - you didn't say). When you go to a concert, do you face the stage or the back

C!

firstly (and expecting flames from this) 6x9's are EVIL,EVIL speakers!!!! speakers are meant to be round, not ovals!!! I would never, ever dream of going back to 6x9's - they are only designed for getting bass from speakers that go into tight parcel shelfs,etc......

if you want bass, and propper bass, you need to get a sub - no two ways about it... I have seen cars with 4 * 6x9's on their rear shelf - you can really spot the morons, cause with the money they spent they could have got a nice little 10inch sub and a few 5-6inch component speakers and have a much better system...

personally, ditch the 3.5" speakers up front, get some decent 5-6inch coaxials/splits for the front doors/kicks.... amplify them with 2 of the four Jensen channels.... chuck the 3.5inch speakers in the rear parcel shelf running off the Blaupunkt head unit for some 'rear fill' and bridge the remaining two Jensen channels into 1 for the sub woofer...... and of course set your crossover points so that your sub gets less than 80-160Hz freqs and the fronts get greater than 80-160Hz...

and, never, never, never bridge a headunit. Do not pass go, do not collect $200!