4 channel amp help
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 2,682
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From: Atlanta GA
4 channel amp help
I'm looking for a 4 channel amp that will serve double duty to run a set of components at around 100 watts per side and then bridge the rear channels to run a 10" or 12" sub. The sub will need to receive at least 200 watts. I'm having trouble determining how much power is sent to the sub when you run the amp in tri-mode operation. The ratings are always given as something like 75x4 or 300x2. Any of the usual suspects is fine PG, Alpine, Kicker, JBL, etc.
Race Director
Joined: Apr 2000
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From: Galloway NJ
Re: 4 channel amp help (leolufse)
Check out the Hifonics Olympus :thumbs:
http://www.thezeb.com/caraudio/hifonics.html
http://www.thezeb.com/caraudio/hifonics.html
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 2,682
Likes: 0
From: Atlanta GA
Re: 4 channel amp help (Metal_Wulf)
Check out the Hifonics Olympus :thumbs:
http://www.thezeb.com/caraudio/hifonics.html
http://www.thezeb.com/caraudio/hifonics.html
Amplifier - 124x4 @ 4ohm - 800 watts RMS total, so if I were to bridge channels 3 and 4 for the sub I would get 124 watts to each component and 248 watts to the sub? Is that correct?
Race Director
Joined: Apr 2000
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From: Galloway NJ
Re: 4 channel amp help (leolufse)
125 watts x 4 channels into 4 Ohms (stereo)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 2,682
Likes: 0
From: Atlanta GA
Re: 4 channel amp help (Metal_Wulf)
125 watts x 4 channels into 4 Ohms (stereo)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
Racer
Joined: Dec 2001
Posts: 313
Likes: 0
From: Long Island NY
Re: 4 channel amp help (Metal_Wulf)
125 watts x 4 channels into 4 Ohms (stereo)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
200 watts x 4 channels into 2 Ohms (stereo)
250 watts x 4 channels into 1 Ohm (stereo)
400 watts x 2 channels into 4 Ohms (bridged)
500 watts x 2 channels into 2 Ohms (bridged)
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Race Director
Joined: Apr 2000
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From: Galloway NJ
Re: 4 channel amp help (knesbitt)
What is the advantage to running a pair of speaker at an ohm other than 4? It looks like running a speaker at 2 ohm makes it louder, but what are the trade offs? Is sound quality degraded is it harder on the the amps and speakers. Also, isn't the wiring different?
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 2,682
Likes: 0
From: Atlanta GA
Re: 4 channel amp help (Metal_Wulf)
What is the advantage to running a pair of speaker at an ohm other than 4? It looks like running a speaker at 2 ohm makes it louder, but what are the trade offs? Is sound quality degraded is it harder on the the amps and speakers. Also, isn't the wiring different?
if the speaker is 4 ohms, it'll run at 4 ohms, if the speaker is 2 ohms it'll run at 2 ohms... etc.
if the speaker is 4 ohms, it'll run at 4 ohms, if the speaker is 2 ohms it'll run at 2 ohms... etc.
Lets not worry about this 4 channel amp thread that you hijacked :lol: .
Lets pretend you have a 2 channel amp that is rated at 90X2@4ohms and 180x2@2ohms. If you hook up a pair (2) 4 ohm speakers, they will both get 90watts. If you hook up 4 4 ohm speakers (2 on the left channel 2 on the right channel, for example) each speaker will still get 90 watts.
Lets pretend you take that same amp and bridge the 2 channels to run a subwoofer. You would get 360 watts to the sub if the sub had a 4 ohm impedance. The amp in this case would actually "see" 2 ohms. If you hooked up an 8 ohm sub in this situation, the amp would "see" 4 ohms and only put out 180 watts to the sub.
I just can't figure out how to do this kind of math on a 4 channel amp running in 3 channel mode.
:rolleyes:
[Modified by leolufse, 3:33 PM 4/22/2003]
Racer
Joined: Dec 2001
Posts: 313
Likes: 0
From: Long Island NY
Re: 4 channel amp help (leolufse)
What is the advantage to running a pair of speaker at an ohm other than 4? It looks like running a speaker at 2 ohm makes it louder, but what are the trade offs? Is sound quality degraded is it harder on the the amps and speakers. Also, isn't the wiring different?
if the speaker is 4 ohms, it'll run at 4 ohms, if the speaker is 2 ohms it'll run at 2 ohms... etc.
Thats not the whole story.
Lets not worry about this 4 channel amp thread that you hijacked :lol: .
Lets pretend you have a 2 channel amp that is rated at 90X2@4ohms and 180x2@2ohms. If you hook up a pair (2) 4 ohm speakers, they will both get 90watts. If you hook up 4 4 ohm speakers (2 on the left channel 2 on the right channel, for example) each speaker will still get 90 watts.
Lets pretend you take that same amp and bridge the 2 channels to run a subwoofer. You would get 360 watts to the sub if the sub had a 4 ohm impedance. The amp in this case would actually "see" 2 ohms. If you hooked up an 8 ohm sub in this situation, the amp would "see" 4 ohms and only put out 180 watts to the sub.
I just can't figure out how to do this kind of math on a 4 channel amp running in 3 channel mode.
:rolleyes:
[Modified by leolufse, 3:33 PM 4/22/2003]
if the speaker is 4 ohms, it'll run at 4 ohms, if the speaker is 2 ohms it'll run at 2 ohms... etc.
Thats not the whole story.
Lets not worry about this 4 channel amp thread that you hijacked :lol: .
Lets pretend you have a 2 channel amp that is rated at 90X2@4ohms and 180x2@2ohms. If you hook up a pair (2) 4 ohm speakers, they will both get 90watts. If you hook up 4 4 ohm speakers (2 on the left channel 2 on the right channel, for example) each speaker will still get 90 watts.
Lets pretend you take that same amp and bridge the 2 channels to run a subwoofer. You would get 360 watts to the sub if the sub had a 4 ohm impedance. The amp in this case would actually "see" 2 ohms. If you hooked up an 8 ohm sub in this situation, the amp would "see" 4 ohms and only put out 180 watts to the sub.
I just can't figure out how to do this kind of math on a 4 channel amp running in 3 channel mode.
:rolleyes:
[Modified by leolufse, 3:33 PM 4/22/2003]
Race Director
Joined: Apr 2000
Posts: 11,840
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From: Galloway NJ
Re: 4 channel amp help (knesbitt)
Hmmmm. So if I have a 5 channel amp, but only use 2 channels (Front Left, Front Right) I could probably bridge the Rear Left, Rear Right and Subwoofer channels to get more power out of my subwoofer? I could also run the subwoofer at 2 ohms to get more power? Can the fronts be run at 4 ohms while the subwoofer be run at 2 ohms?
Race Director
Joined: Apr 2000
Posts: 11,840
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From: Galloway NJ
Re: 4 channel amp help (knesbitt)
Contains one 10W3v2-D2 in a sealed enclosure. 300 Watt power handling. Wired for 4 ohm mono. How safe is it to run at 2 ohm?
Just leave it at 4 ohm... you're amp will be giving it enough power.
