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6 pre outs, 7 channels, what's the limiting factor?

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Old 05-22-2009, 08:22 AM   #1
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6 pre outs, 7 channels, what's the limiting factor?

Here's the hypothetical situation I have with another vehicle at home. I can easily install one pair of speakers in the kick panels, another pair in the front doors, and one more pair of speakers on the rear deck, plus a subwoofer.

I'm curious as how this setup would be wired. If the HU only has 6 pre outs but 7 channels as described above, how/were would you plugin or splice into the RCA cables to get the signal from the HU to the speakers? In this scenario assume multiple amps.

Please excuse my simpleton mind, my only install has been with a 4 channel amp to 4 channels, pretty easy.
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Old 05-22-2009, 08:28 AM   #2
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You can split the RCA with Y adapters for highs/mids/or low pass.
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Old 05-22-2009, 08:29 AM   #3
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I dont think I have ever seen 6 preouts on a head unit???
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Old 05-22-2009, 08:40 AM   #4
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run the kick panels and doors off the same channel.
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Old 05-22-2009, 08:47 AM   #5
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That was quick.
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Old 05-22-2009, 08:50 AM   #6
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Quote:
Originally Posted by silverback07 View Post
get a crossover, it will split the signal. You can have the front signal split into sub/mid bass/mids and highs if you want... same for the rears. My headunit has 6 outputs. The two front outputs go to the amp with a built-in hi-pass crossover to prevent freq's lower than 80Hz going to the fronts. The signal is then pumped out through the amp and into 2 separate crossovers, one that does the mid-bass, passing freqs between 80 and 250 to the door speakers and the second does the mids and highs; sending signals to both my mids and tweets in the kick panels.
The crossovers that you describe are they in addition to the crossovers provided with a component setup?
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Old 05-22-2009, 10:42 AM   #7
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Quote:
Originally Posted by silverback07 View Post
Mine are the ones that came with the component setup, but I also have a MB Quart "Add-a-woofer" which does the mid-bass and it came with its own crossover. I have a Sony ES 10 channel crossover that I've had "forever" and I was thinking about running everything though it, getting rid of the component crossovers, just haven't done it.
That seems to address the situation, however please let me know if I've gone off the deep end, replacing several crossovers which came with the component speakers at substantial cost with an all-in-one crossover seems counter intuitive. After reviewing several sites and reading about component speakers, manufacturers make a huge point as to the quality of not only the speakers but the crossovers provided with their setups. My understanding of crossovers are they filter out certain frequency ranges which are undesirable for the speaker (ie you don't want an 80hz signal going to a twetter). If this is the case how important is the quality of the manufacturers provided crossover? Is this all a marketing ploy or is there some substance to using the provided crossovers?
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Old 05-22-2009, 11:13 AM   #8
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Quote:
Originally Posted by 4x4Taco View Post
I dont think I have ever seen 6 preouts on a head unit???
not uncommon.

2 for front speakers
2 for rear speakers
2 for subwoofers.
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Old 05-22-2009, 11:51 AM   #9
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Quote:
Originally Posted by silverback07 View Post
The quality of the crossovers is super important. You can look at several manufactures, some of the higher end components don't necessarily have better speakers, but better crossovers. My Quarts have very high quality crossovers.
Then why would you sacrifice the superior quality of the speakers crossover by re-installing your Sony unit? Unless your Sony ES outshines the other crossovers.

4x4Taco stated you could use Y adapters, but with every additional connection isn't there the possibility of adding signal noise?
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Old 05-23-2009, 09:53 AM   #10
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Quote:
Originally Posted by silverback07 View Post
Exactly, and it remains to be seen if its higher quality or not. But I have the option.
Let's take the discussion a step farther, the folks who build competition systems with more speakers than your local Best Buy, how do they manage all the sound? Aside from a wiring mess, there must be some central hub for all the speakers to eventually get back to the HU.
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