PA660 in 4 channel tri-mode?
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calex
Posts: 7
Has anyone tried this yet?
I'm pretty old and I'm not looking for bass that will knock my remaining teeth out. I just want a little more than I'm getting from the rear 6x9 Rockford Fosgates.
According to the 660s owners manual (which looks like it was written by an hourly employee at 4:30 on a Friday afternoon of a long weekend), you can bridge a couple of subs off of it using inline capacitors on the speaker positives and inline inductors on the subs positives.
From what info I could find out there in www land, people who have done tri-mode with two channels use an "L-pad" (or something like that) to control the sub volume.
Would this give me the bass boost I'm looking for? What size capacitors and inductors would be best? I always heard that anything below 120 hz is omnidirectional so would that be the best size to use? Will I be sacrificing volume on my 4 channels that I couldn't make up in gain? Or should I just bite the bullet and get the PA880, and power and ground distribution blocks?
Thanks.
I'm pretty old and I'm not looking for bass that will knock my remaining teeth out. I just want a little more than I'm getting from the rear 6x9 Rockford Fosgates.
According to the 660s owners manual (which looks like it was written by an hourly employee at 4:30 on a Friday afternoon of a long weekend), you can bridge a couple of subs off of it using inline capacitors on the speaker positives and inline inductors on the subs positives.
From what info I could find out there in www land, people who have done tri-mode with two channels use an "L-pad" (or something like that) to control the sub volume.
Would this give me the bass boost I'm looking for? What size capacitors and inductors would be best? I always heard that anything below 120 hz is omnidirectional so would that be the best size to use? Will I be sacrificing volume on my 4 channels that I couldn't make up in gain? Or should I just bite the bullet and get the PA880, and power and ground distribution blocks?
Thanks.
Post edited by calex on
Comments
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You start to locate sound from about 70 hz up. I would ditch the rear 6x9, bridge two channels from the 660 and run a 12" MM sub. Cut the sub around 60-80hz and keep the gains low. You'll get what you want in terms of bass.
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I would think the sound stage would collapse if I ran all the mids and highs through a set of Alpine 4x6s in the dash. It's an 88 trans am which have some of the worst accoustical interiors. The 4 channel boost sounds really good, just lacking in lows.
