Bi-Amping
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Junior User
Joined: Feb 2004
Posts: 65
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From: Canada
Bi-Amping
Speakers - SPS571A Alpine Component speekers
Amp - MRV-F340 4 channel Alpine V12 Amp
Situation - want to take the 2 front channels and send to the 2 tweeters. Take the 2 rear channels and send to the 2 mids.
Question - the cross overs that came with the speakers do not support bi-amping, however, my amp does have both high/low crossovers built in for both front and rear channels.
Is it still safe to do it this way (using the amps built in cross oversand removing the speaker crossovers)without adding in an external crossover before the amp?
Amp - MRV-F340 4 channel Alpine V12 Amp
Situation - want to take the 2 front channels and send to the 2 tweeters. Take the 2 rear channels and send to the 2 mids.
Question - the cross overs that came with the speakers do not support bi-amping, however, my amp does have both high/low crossovers built in for both front and rear channels.
Is it still safe to do it this way (using the amps built in cross oversand removing the speaker crossovers)without adding in an external crossover before the amp?
Elder User
Joined: Mar 2003
Posts: 812
Likes: 0
From: New Canaan, CT
You best bet would be an external crossover because you will have the ability to adjust the cut off frequancy. The high cut off on the amp is only a high pass crossover which would send your tweeters way too much to play. The low pass X over is just bass. Set both to full or turn them off then run an external x-over from the radio to the amp.
If you not going for a high SQ system you might be impressed with just bridging the amp to the components at full range and the the speaker cross overs do the rest....
If you not going for a high SQ system you might be impressed with just bridging the amp to the components at full range and the the speaker cross overs do the rest....
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Junior User
Joined: Feb 2004
Posts: 65
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From: Canada
I beleive the MRV-F340 4 channel Alpine V12 Amp has adjustable crossovers built in for the high & low crossovers. If that is the case would I still need the an extra crossover berore the amp?
Senior User
Joined: Jan 2004
Posts: 269
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From: Central Ohio
Originally Posted by 2004lariat
Speakers - SPS571A Alpine Component speekers
Amp - MRV-F340 4 channel Alpine V12 Amp
Situation - want to take the 2 front channels and send to the 2 tweeters. Take the 2 rear channels and send to the 2 mids.
Question - the cross overs that came with the speakers do not support bi-amping, however, my amp does have both high/low crossovers built in for both front and rear channels.
Is it still safe to do it this way (using the amps built in cross oversand removing the speaker crossovers)without adding in an external crossover before the amp?
Amp - MRV-F340 4 channel Alpine V12 Amp
Situation - want to take the 2 front channels and send to the 2 tweeters. Take the 2 rear channels and send to the 2 mids.
Question - the cross overs that came with the speakers do not support bi-amping, however, my amp does have both high/low crossovers built in for both front and rear channels.
Is it still safe to do it this way (using the amps built in cross oversand removing the speaker crossovers)without adding in an external crossover before the amp?
I've seen your question on two or three different forums. I'm curious to know why you want to do this. There are several reasons NOT to. The amp's low pass/high pass filter is NOT the same as the crossover NETWORK with your components. The amp does NOT provide for the "bandpass" filtering you will need for the mids. Bandpass means it passes a band of frequencies in the middle of the frequency spectrum for your mids. The amp does NOT provide a high enough filter "point" for the tweeters. The tweeters on their own, without their passive crossover NETWORK, would not handle 55 watts. I can think of no reason this would be beneficial. Like I said on another forum, you could use an electronic crossover, but even that would give you little, if any, sound quality benefits.
Posting Guru
Joined: Jun 2001
Posts: 1,236
Likes: 2
From: Vancouver Island
Use the passive crossover; if it's a good design it may deliver more accurate sound quality than an active crossover. (because a passive crossover can be designed to specifically match the tweeter and midbass, whereas an active crossover assumes "perfect" drivers).
Bridge the other two channels and drive a sub.
Bridge the other two channels and drive a sub.
Laughing Gas
Joined: Jun 2004
Posts: 1,240
Likes: 3
From: Dallas, Texas
I have this very same setup. You can use your head unit to control the crossover for the front speakers, If it's a Alpine highend unit. I use the CDA-9831 which supports Amp linking. This allows you to adjust the crossover and all from there without opening the Amp.
I hooked up my F340 in 4 channel mode to the rear 571A's, Then used the other 2 channels to drive Two SWS 1042D's Subs which support Bi-Amping. I would not bridge these speakers. If you got the extra cash get the 9833 which has V-Drive to 17.4 volts.
The Speakers are in a Aerostar with the Rear hatch housing the 571's and the Two Subs mounted in the floor angled at 30 Degrees to reflect off the rear glass first.
I hooked up my F340 in 4 channel mode to the rear 571A's, Then used the other 2 channels to drive Two SWS 1042D's Subs which support Bi-Amping. I would not bridge these speakers. If you got the extra cash get the 9833 which has V-Drive to 17.4 volts.
The Speakers are in a Aerostar with the Rear hatch housing the 571's and the Two Subs mounted in the floor angled at 30 Degrees to reflect off the rear glass first.
Senior User
Joined: Jan 2004
Posts: 269
Likes: 0
From: Central Ohio
Originally Posted by Muffinman
I have this very same setup. You can use your head unit to control the crossover for the front speakers, If it's a Alpine highend unit. I use the CDA-9831 which supports Amp linking. This allows you to adjust the crossover and all from there without opening the Amp.
I hooked up my F340 in 4 channel mode to the rear 571A's, Then used the other 2 channels to drive Two SWS 1042D's Subs which support Bi-Amping. I would not bridge these speakers. If you got the extra cash get the 9833 which has V-Drive to 17.4 volts.
The Speakers are in a Aerostar with the Rear hatch housing the 571's and the Two Subs mounted in the floor angled at 30 Degrees to reflect off the rear glass first.
I hooked up my F340 in 4 channel mode to the rear 571A's, Then used the other 2 channels to drive Two SWS 1042D's Subs which support Bi-Amping. I would not bridge these speakers. If you got the extra cash get the 9833 which has V-Drive to 17.4 volts.
The Speakers are in a Aerostar with the Rear hatch housing the 571's and the Two Subs mounted in the floor angled at 30 Degrees to reflect off the rear glass first.
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Laughing Gas
Joined: Jun 2004
Posts: 1,240
Likes: 3
From: Dallas, Texas
Originally Posted by LinearPower
Re-read what he was considering. It wasn't the same thing that you did. He was wanting to amplify the tweeters and the mids separately WITHOUT using the passive crossovers that came with the speakers. The amp does not work for this on its own. There has to be some kind of crossover system used, as I mentioned.
I still would not do what he is asking. The crossover that comes with the speakers need to be there. I also upgraded to a 9833 today and I think it can control the configuration he is tring to do. I just have no need to.
Last edited by Muffinman; Nov 26, 2004 at 08:12 PM.
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