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need help with sub mounting and powering

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Old 07-11-2003, 03:47 PM
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okay i have a 1984 Toyota Supra
it's a hatch-back with a biggish trunk area...
what i have are 2 Alpine Type-R's and a RF 300.2
what i want to do is mount them inverted, so that the magnets are visible...
now what i am asking is, i've heard that when a sub is mounted invert you should reverse the polarity that your powering it with, so you send the + line on the amp to the - pole on the sub, is this right?
also i want to bridge the amp so that only one channel is powering both the subs preferably in parallel/parallel, now to do that would i need to "Y" the + & - lines coming from the amp to the subs in order to power each subs 2 voice coils or what? i'm still pretty new to all this, and i want to get the most that i can from this amp/sub combo, as at the moment it's all i have...
also i'm running an alpine deck from last year the CDA-7893 so i've got the RCA's from the sub-out put going to the amp, so that's all good there i'm sure...
anyways any help you guys can spare would be great!
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Old 07-11-2003, 05:00 PM
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Honestly bud, I would consult a local dealer in your area. They couldn't charge you more than $20.00. If you hook up something wrong it could cost you 1/2 of your output... [img]graemlins/thumb.gif[/img]
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Old 07-11-2003, 06:03 PM
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ya i would do that, if we had a local dealer around here
that's why i have to resort to the board today, but thanks for the concern
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Old 07-13-2003, 09:13 AM
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Im not quite sure what you are asking. Yeah inverting your subs requires the poarity to be reversed. To bridge the amp the amp is marked at the speaker terminal as to which leads are used for bridging. And you dont need a y-connector as long as the RCA are going to channel 1 and 2.

Go to http://www.jlaudio.com and go to tutorials for more info on how to wire subs.

SHY
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