2 channel or 4 channel amp

harry2223 · 18th February 2008, 18:59

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.

gunbir · 18th February 2008, 23:32

For running two speakers and a sub you need two 2ch amps, or one 2ch and a mono, or a 4ch amp.

low_bass_makker · 19th February 2008, 11:02

Quote:

Originally Posted by gunbir

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.

jkdas · 19th February 2008, 11:29

Quote:

Originally Posted by low_bass_makker

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.

Bass&Trouble · 19th February 2008, 11:34

Quote:

Originally Posted by jkdas

Blau calls this the phantom setup or so ..right?

Its commonly known as tri-mode operation.

gunbir · 19th February 2008, 13:29

Quote:

Originally Posted by low_bass_makker

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.

navin · 19th February 2008, 14:04

Quote:

Originally Posted by gunbir

We are here to help people, not confuse them or show off our knowledge.

Now I'll have to delete all my posts! :-(

DerAlte · 19th February 2008, 14:15

Quote:

Originally Posted by gunbir

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!!!)

navin · 19th February 2008, 16:48

Quote:

Originally Posted by DerAlte

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.

DerAlte · 19th February 2008, 17:07

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.

harry2223 · 19th February 2008, 18:16

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.

adityamunshi · 19th February 2008, 18:21

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 ?

RobertClive · 19th February 2008, 20:10

Quote:

Originally Posted by adityamunshi

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.

nitrous · 19th February 2008, 21:20

Quote:

Originally Posted by harry2223

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?

navin · 19th February 2008, 22:08

Quote:

Originally Posted by DerAlte

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

And lately, orion, PPI, Phoenix Gold are not of the same quality as it was.

Sad but true.

18th February 2008, 18:59	#1
harry2223 BANNED Join Date: Jan 2008 Location: patiala Posts: 350 Thanked: 0 Times View My Garage	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.
	() Thanks

18th February 2008, 23:32	#2
gunbir Senior - BHPian Join Date: Sep 2005 Location: New Delhi Posts: 2,465 Thanked: 33 Times	For running two speakers and a sub you need two 2ch amps, or one 2ch and a mono, or a 4ch amp.
	() Thanks

19th February 2008, 17:07	#10
DerAlte Senior - BHPian Join Date: Mar 2007 Location: Bangalore Posts: 8,035 Thanked: 2,920 Times	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.
	() Thanks

19th February 2008, 18:16	#11
harry2223 BANNED Join Date: Jan 2008 Location: patiala Posts: 350 Thanked: 0 Times View My Garage	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.
	() Thanks

19th February 2008, 18:21	#12
adityamunshi BHPian Join Date: May 2007 Location: Baroda Posts: 771 Thanked: 6 Times	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 ?
	() Thanks