need help with 2/4 chan amp question.

[trunks9_us 10+ year member]

ok heres the deal i have 2 speakers and 2 tweeters and a 2chan amp. the speakers and tweeters are 50 rms each giving a total of 200 rms the amp is 100rms each chan the amp is a zapco amp. my question is if i put the left tweet and left speaker on one chan and the right speaker and right tweeter on the other chan would i still be running a 4 ohm load? cause the speakers are 4 ohms and the amp produces 100 rms to each chan at 4 ohm. I just dont know if the ohm load changes when you add 2 things on the same chan. Also i will be running cross overs as well but my next question is will this be bad for my speakers/amp to be running tweets and speakers on the same chan?

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[Prowler573 5,000+ posts]

A bit confused over there in Aggie country, are we?

That's okay - let's see if we can get you sorted out. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Are these 2 speakers, 2 tweeters, and the crossovers you intend to run a component set? Are the crossovers passive units that were supplied with the 4 separate drivers?

If so you're going to want to connect the amp to the crossover module. The Xover mod, in turn, will divide the input signal into two separate bands - the highs which will get sent to the tweeter and the rest which will get sent to the midwoofer.

If the above isn't applicable then disregard it.

If you connect a pair of single voice coil drivers that are both 4 Ohm drivers in parallel like so:

as indicated in the diagram it creates a 2 Ohm load. This will up the amp's output from the 100w per channel it outputs @ 4 Ohms to whatever its rated output is for a 2 Ohm load.

If you connect two single voice coil 4 Ohm drivers in series, however, like so:

it yields a nominal 8 Ohm load. This would effectively half your amp's 4 Ohm output or put it around 50w per channel.

As far as will that be bad for your amp? No - not unless you drive it into creating clipped output. Clipping is equally bad for both the speaker(s) being powered by that clipped signal and the amp being forced to output it.

But assuming a clean signal it won't be bad for the amp. The speakers, however, if not properly crossed over, won't care much for being run full range as they aren't designed for it.

You'll want some method of taking all but the highest frequencies out of the signal being fed to the tweets as well as some mechanism for taking the both the highest frequencies and the lowest frequencies out of the other speaker. I do not know what kind of "other" speaker we're discussing so I cannot do much beside a general recommendation there...

 

[trunks9_us 10+ year member]

A bit confused over there in Aggie country, are we?That's okay - let's see if we can get you sorted out. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Are these 2 speakers, 2 tweeters, and the crossovers you intend to run a component set? YES Are the crossovers passive units that were supplied with the 4 separate drivers? YES THE CROSSOVER IS 2 OF THEM THEY HAVE MID IN MID OUT TWEET IN TWEET OUT THERE PASSIVE CROSSOVERS.

If so you're going to want to connect the amp to the crossover module. The Xover mod, in turn, will divide the input signal into two separate bands - the highs which will get sent to the tweeter and the rest which will get sent to the midwoofer.

If the above isn't applicable then disregard it.

If you connect a pair of single voice coil drivers that are both 4 Ohm drivers in parallel like so:

as indicated in the diagram it creates a 2 Ohm load. This will up the amp's output from the 100w per channel it outputs @ 4 Ohms to whatever its rated output is for a 2 Ohm load. THESE SPEAKERS ARE FOR 4 OHM LOAD CANT RUN 2 OHM

If you connect two single voice coil 4 Ohm drivers in series, however, like so:

it yields a nominal 8 Ohm load. This would effectively half your amp's 4 Ohm output or put it around 50w per channel.

As far as will that be bad for your amp? No - not unless you drive it into creating clipped output. Clipping is equally bad for both the speaker(s) being powered by that clipped signal and the amp being forced to output it.

But assuming a clean signal it won't be bad for the amp. The speakers, however, if not properly crossed over, won't care much for being run full range as they aren't designed for it.

You'll want some method of taking all but the highest frequencies out of the signal being fed to the tweets as well as some mechanism for taking the both the highest frequencies and the lowest frequencies out of the other speaker. I do not know what kind of "other" speaker we're discussing so I cannot do much beside a general recommendation there...

LOL this is a big hassle ill just buy the 4 chan. amp instead but so i buy a 4 chan amp right and the speakers are svc 4ohm and i want to run 4 ohm load to i just hook up each speakers/tweeters to each chan and that will give me 4 ohms to each speaker/tweeter. 4 chans 2 tweet/speakers have one to own chan makes 4 ohm to all drivers correct?

 

[dipitydoo 10+ year member]

I think you want a 2 channel amp, run the mid/tweeters via the crossover, per channel, as already suggested. This will give you a 4 ohm net load to the amp. These are a matched component set right?