bridgeing does it hurt SQ??

[wagon5.1 10+ year member]

I was just looking around for amps for my car and came acrossed the Trantula series from Soundstream (good?) I was looking at the 5 channel TRA880.5 now if i where to bridge channels 1-2 and 3-4 on one amp for my front speakers and then bridge channel 1-2 for my center speaker and just run the last two channels normal for my rears would this affect SQ on the three bridged channels???

Amps run 60 x 4 and 200 x 1 @ 4ohms normally

bridged they do 240 x 2 + 200 x 1 @ 4ohms

I want to run two of these but i don't want to degrade the quaility of the sound

someone please fill me in!!

Tim

Click to read more...

 

[jujumantb 10+ year member]

Generally, no, it shouldn't degrade sound quality ...

Double the distortion from the amp! //content.invisioncic.com/y282845/emoticons/nerd.gif.c6fa51ddf7ff75f1c0371fbc648f70ae.gif

 

[JimJ 5,000+ posts]

Werd.

No degradation in SQ.

Double the distortion from the amp!

And that decreases SQ? Oh yes, we're dealing with SS gear //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif That's what you get for your high damping factors and negative feedback...

 

[jujumantb 10+ year member]

No degradation in SQ.

And that decreases SQ? Oh yes, That's what you get

Make up your mind //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[jujumantb 10+ year member]

Actually, at the same power level, distortion would be lower bridged ...

I've always heard it doubles... or maybe not doubles, but increases crossover distortion //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

But I guess I'll take your word for it, after all you are Jmac //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

edit: post # 1111!!!!!!!11

 

[JimJ 5,000+ posts]

Sure, I made up my mind.

Running very high THD's from SS gear does sound sucky - that's because the amp is using gobs of NFB and has a very high damping factor, in part...also, the harmonics generated are harsh and unpleasant to the ear (odd/higher order).

SET's running in full Class A with no NFB routinely run THD's of 3-5%...do they sound bad? Umm, I think not //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif//content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif All about the amp topology and the harmonics generated.

So you have my answer...

 

[3.5Max6spd 10+ year member]

if its a relatively high damping factor amp, chances are it'll perform quite well bridged and still yield a good amount amount of damping as a good amp will still be in the inaudible range as far as distortion- typically distortion doubles, and damping cuts in half as you lower impedances- 4ohm bridged is equivalent give or take to the heat it draws at 2ohm stereo- of course you should carefully reset your gains to keep the noise floor low as possible- i think you'll be fine

 

[JimJ 5,000+ posts]

You're a n00b ...

Yeah...I really have no idea what I'm talking about...

How much does the XXX cost again? //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif

 

[req 5,000+ posts]

Yeah...I really have no idea what I'm talking about...
How much does the XXX cost again? //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif

$6702.04 shipped to red china. //content.invisioncic.com/y282845/emoticons/redface.gif.62fdbfe1a101588a808c4cff71bcb942.gif

 

[wagon5.1 10+ year member]

???? wow cunfused now!! I was planing on bridgeing for the power but gaining it down alot for head room. But doing this i should be fine with SQ right? Is damping factor better if its higher or lower?? IM A NOOB about amp specs!

Thanks all

Tim

 

[n2audio 5,000+ posts]

assuming your speakers can make use of the additional power - the microscopic gains in THD wouldn't be a factor.

 

[squeak9798 5,000+ posts]

Is damping factor better if its higher or lower??

It's "better" if it's higher...however, damping factor = overrated. A damping factor of 20 or higher is sufficienct and you won't notice an audible difference.

 

[wagon5.1 10+ year member]

all my main speakers will be CDT high defs and the subs are elemental design 10s

Tim

 

[3.5Max6spd 10+ year member]

just do it....and carefully set your gains

 

[audiolife 5,000+ posts]

yuh those amps are powerful to get rated power on my 320.4 van gogh my gain is less than 1/3 up (close estimate without going spastic in math) taurantulas are different but are still pretty strong. im glad i didnt switch amps like i was going to very happy with it.