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Old 18th February 2008, 18:59   #1
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Default 2 channel or 4 channel amp

hi friends i am here to ask the gurus . whether a 2 channel amp is good or 4 channel amp for running two speakers and a 12" subwoofer.
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Old 18th February 2008, 23:32   #2
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For running two speakers and a sub you need two 2ch amps, or one 2ch and a mono, or a 4ch amp.
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Old 19th February 2008, 11:02   #3
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Originally Posted by gunbir View Post
For running two speakers and a sub you need two 2ch amps, or one 2ch and a mono, or a 4ch amp.
He can wire the 2 channel amp to 2 speakers and one sub also using a passive cross over also.
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Old 19th February 2008, 11:29   #4
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Originally Posted by low_bass_makker View Post
He can wire the 2 channel amp to 2 speakers and one sub also using a passive cross over also.
Blau calls this the phantom setup or so ..right?

I have the same opinion as Gunbir.

4 channel if you are on a budget, else get a mono.
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Old 19th February 2008, 11:34   #5
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Quote:
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Blau calls this the phantom setup or so ..right?
Its commonly known as tri-mode operation.
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Old 19th February 2008, 13:29   #6
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Originally Posted by low_bass_makker View Post
He can wire the 2 channel amp to 2 speakers and one sub also using a passive cross over also.
Of course I know the Tri-mode but the problem is most newbies don't want to "tri" that hard for a simple system. Factor in the time, effort and money spent on designing and building a crossover and a basic 4ch amp would seem a more viable option.

We are here to help people, not confuse them or show off our knowledge.
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Old 19th February 2008, 14:04   #7
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Originally Posted by gunbir View Post
We are here to help people, not confuse them or show off our knowledge.
Now I'll have to delete all my posts! :-(
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Old 19th February 2008, 14:15   #8
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Originally Posted by gunbir View Post
We are here to help people, not confuse them or show off our knowledge.
Much appreciated, Gunbir! That's the spirit, though we get carried away sometimes. (The last part is not valid for Navin!!!)
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Old 19th February 2008, 16:48   #9
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Originally Posted by DerAlte View Post
though we get carried away sometimes. (The last part is not valid for Navin!!!)
Yeah, I get carried away always (witness Best component speaker thread). LOL.

Seriosuly, I wonder if anyone agrees to the first line of Post 54 of the above mentioned thread.

Last edited by navin : 19th February 2008 at 16:49.
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Old 19th February 2008, 17:07   #10
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Incorrect / limited interpretation: you only took the last word (sometimes), I meant the last phrase ("we get carried away"). "Carried away" is too innocuous a word for you - your passion is incomparable. Keep it coming!

Yes, I agree completely. That ICE is audio in an automobile is just incidental for nuts like us.
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Old 19th February 2008, 18:16   #11
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is a 2channel bridgeable amp is efficient of producing output to that of a 4channel amp.what are the differences between a 4channel and 2 channel amp.

one difference is that 2channel have 2 outputs and 4channel have 4 outputs. are there any difference in output power.
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Old 19th February 2008, 18:21   #12
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Is there a 4-channel amp which is 2 ohm stable (bridged) ?

Can we use it to power the two coils of a DVC sub in parallel ?
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Old 19th February 2008, 20:10   #13
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Originally Posted by adityamunshi View Post
Is there a 4-channel amp which is 2 ohm stable (bridged) ?

Can we use it to power the two coils of a DVC sub in parallel ?
If you are thinking of a 4 channel amp to drive two sub, you are certainly on budget. And a 4 channel amp that is 2 ohms stable is meant to be costly.

There are couple of companies like orion and PPI who makes 1 ohm stable 4 channel amp but you can hardly get them here. And lately, orion, PPI, Phoenix Gold are not of the same quality as it was. That's what I hear from my friend in US.
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Old 19th February 2008, 21:20   #14
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Quote:
Originally Posted by harry2223 View Post
is a 2channel bridgeable amp is efficient of producing output to that of a 4channel amp.what are the differences between a 4channel and 2 channel amp.

one difference is that 2channel have 2 outputs and 4channel have 4 outputs. are there any difference in output power.
U've got it mixed up.
Almost always, a 2-channel version of a 4-ch amp is like a cut-half.
Eg. JBL GTO 75.4 = 2x JBL GTO 75.2
JBL CS 60.4 = 2x JBL CS 60.2.
Get the drift?
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Old 19th February 2008, 22:08   #15
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Quote:
Originally Posted by DerAlte View Post
your passion is incomparable..
Der Alte, you shoulda seen me in the late 70s. I think I built about 15-20 pairs of speakers (each build was a different design and tested different speaker topologies) between '78-'81. Other good periods were '83-'85(studio years primairly Klipsch, Gold Sound and JBL Pro series), '87-'88 (Dynaudio/Morel, Audax, Peerless and Focal years), and '92-'95 (ScanSpeak/VifaSpeak, PHL and Accuton years).

Quote:
Originally Posted by RobertClive View Post
And lately, orion, PPI, Phoenix Gold are not of the same quality as it was.
Sad but true.
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