4 speakers 2 channels

[PESteele 10+ year member]

ive spent 2 much money so far and cant spend any more

 

[Prowler573 5,000+ posts]

Not necessarily...
PESteele...If you don't mind me asking...Why are you doing this? Why not just get another 2 channel amp when your budget allows you to? Running mids and highs at low impedances (we are dealing with mids and highs right?) is not the best way to go. Four ohms is ideal. With subs, you can get away with lowering the impedance because the drop in SQ is less noticable. On mids and highs, thats not the case.

Soooo.........SQ is affected dramatically by what impendence is presented to the amplifier - and moreso on mids and highs than on larger speakers?
Once upon a time I ran a set of JBL 4x6s and a set of Kicker stand-alone tweeters off of an Alpine MRP-T130 2 channel (one 4x6 and one tweet per channel @ 2 Ohms) and for what it was it sounded fine and worked fine....

I'm not exactly sure why you are advocating that he doesn't do this? It will work - and should work fine. The only real drawback, if I am reading the thread right and he's wanting to run front and rear speakers off of the same 2-channel amp, is that he will have no staging and no fadar control.

 

[PESteele 10+ year member]

i dont really care about fading and stuff.

but do you think it would be better to run the speakers on the same side to the same channel or the like both back to one and both front to the other

 

[Prowler573 5,000+ posts]

i dont really care about fading and stuff.
but do you think it would be better to run the speakers on the same side to the same channel or the like both back to one and both front to the other

I would suggest running both left speakers to the left channel on the amp and likewise for the right.

If you don't care about fadar functionality that is your choice - but I think you'd begin to care when the "stereo" aspect of whatever you're listening to starts moving front to back rather than side to side, eh?

Example: The opening chords of "Dude Looks Like A Lady" by Aerosmith where the sound moves left to right to left to right ~ wouldn't that sound very, very odd if it were moving front to back instead?

 

[msrpIZtooMUCH 10+ year member]

Well, as the impedance drops, so does the damping factor. The higher the damping factor, the better control the amp has over the speaker. Some say it's just a bunch of hype and that you can't hear the difference. Others say you can. Just something to think about.

 

[JimJ 5,000+ posts]

The output impedance of an SS amp is so low that changing the load impedance really doesn't have much of an effect on the DF.

Where DF becomes more important is in a tubed single ended output stage, where you have a very high output impedance and no negative feedback to reduce it.