Thread: Gorgeous Head Unit with fade Control
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Old Dec 21, 2014 | 01:40 AM
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BrianBrave
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Default Re: Gorgeous Head Unit with fade Control
Originally Posted by mobilefitt
wait.... the stock amp is 240 (4) channel? That's good to know. I was under the impression that it was much less power. Also moving to a 4 ohm Amp from Alpine.

Guy said I would have about 90RMS out of the new infinity speakers I plan to put in the door.

Again, we are going to try the stock amp first. The gist of all my readings say, one channel per door, and 2 channels bridged and wired (correct me if I am wrong because I am truly learning on this thread as we chat) parallel to get 2 ohm proper from the pair of Dual Coil 4 ohm subs I picked up for $30 total. I was trying to save money somewhere and they appear to be excellent quality and fairly basic materials. The Pyles look good too, even though you wont' see them. I am quite happy with that purchase as I have them hooked up to the stock system right now (capacitors still in place in the door).
The stock amp is rated at 240 W total or around 60W per channel. And that's under optimum performance with the balanced components. I would venture to say in truth it's around 40W - 45W per channel.

The two rear (subwoofer) channels are not bridged together, they're both independent channels. The voice coils at the subs are paralleled to create a 2 ohm load (more power but with twice the weight (extra wires) on the speaker motor)

Your speakers and tweeters need to have a crossover made to match their performance. If the woofer's freq response begins to fade before the tweeter's begins to rise the music tone will be flat in that area of the crossover.

It's all tough language to understand, but once you do, you can look at the specifications for each set of components and make sure they match - or you can hope to get lucky....
 
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