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Old 07-27-2004, 07:28 PM   #1
REX8
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Default A Little Help Needed

Whats up guys...have a few quick questions...

Currently I have Infinity components up front and go between a single 10" in the trunk or a JL 6w0 under the passenger seat (when I need the trunk space). To make a long story short, I need my trunk back for good...and I need a little more sub. I've decided to add a second 6w0 under the driver seat after hearing a friend who has 2. I have a basic alpine 4 channel. My question is, when I go to dual 6w0's (which likes to get thier 75w), should I give each its own channel, or run the two in parrallel on a bridge channel? Is one better option than the other? They're 4 ohm speakers. FWI: College budget and I just need it to sound OK. Thanks

John
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Last edited by REX8; 07-27-2004 at 08:44 PM.
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Old 07-27-2004, 09:40 PM   #2
02SilvaWagon
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Since the 6w0's are 4 ohm you will have to run it so each sub is on its own channel. If you bridged the 2 channels and wired the subs in parellel you will be at a 2ohm load which won't work. You didn't say which Alpine amp you have, but I'm guessing its probably in the 40-60 watt per channel range. I'm not sure if that will be enough power for what you are trying to do. If you can find a place for another amp, you might want to consider picking up an Alpine MRP-M350 amp (350 watts at 2 ohms, retail $200). Then you could bi-amp your components or possibly bridge the amp and give your components more power.
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Old 07-29-2004, 10:47 AM   #3
tad_02Wgn
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Quote:
Originally Posted by 02SilvaWagon
Since the 6w0's are 4 ohm you will have to run it so each sub is on its own channel. If you bridged the 2 channels and wired the subs in parellel you will be at a 2ohm load which won't work. You didn't say which Alpine amp you have, but I'm guessing its probably in the 40-60 watt per channel range. I'm not sure if that will be enough power for what you are trying to do. If you can find a place for another amp, you might want to consider picking up an Alpine MRP-M350 amp (350 watts at 2 ohms, retail $200). Then you could bi-amp your components or possibly bridge the amp and give your components more power.
you COULD wire them in stereo, OR you could bridge the amp, and wire the two drivers in series.

say your amp does 75x2 and doubles power into a bridged load (i.e. 300x1 @ 4 ohms, and 150x1@8ohms) like most amps do.
You could wire your 6W0's together in series and get an 8 ohm load, and then get 150w from your theoretical amp. Which is the same as getting 75 to each driver.

I'm not advocating one way or the other here - in fact I would wire them in stereo so you get some separation, especially since they are only 6" so they will probably play some midbass.

good luck.
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Old 07-29-2004, 04:50 PM   #4
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first of all, what amp will you be powering them with?
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Old 07-29-2004, 09:42 PM   #5
shadrool
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Quote:
Originally Posted by WingNut
first of all, what amp will you be powering them with?
thats the real question we need. just because the speaker's are 4ohm doesnt mean, that they cannot handle a 2ohm load.
i would personally go with 2 8" subs. one under each seat. but if $$ is a issue which i presume it is. go with a 6.5 woofer in each door, and build a sealed enlcoser. stuff the hell out of the encloser with poly-fill and look to cross them over @ or around 40 cycles. stuffing the encloser will tighten up the excursion and make that speaker think? its in a larger encloser.
i had installed a single jl 6.5 woofer into a 04 dodge viper a few months back and powered it by an audison amp. crossed it over @ 45 cycles and stuff the stock encloser until i couldnt get anymore poly-fil in. WOW, thats all i have to say. i was very impressed.....
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Old 07-29-2004, 11:00 PM   #6
fastsubie
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FWIW you can double the rms power on those JL's without a care in the world. Just make sure it is a good amp and feed them clean power. I'm looking for a pair of 6w0's to do the same thing (under the seats). I had a pair of 10w0's getting 500w rms for 3 years and they still sound perfect,they are only rated for 125w rms.(gave them to my bro for his Ranger. JL builds good subs, they can take a beating and are underated by JL power handling wise. Can I ask you where you are getting your 6w0's?? I can't find them anywhere, I want them bad!.. I need my trunk back asap..

Thanks,

Fess
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Old 07-29-2004, 11:27 PM   #7
IwantONE
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What kind of box did you guys make to fit these 6w0s in? I literally just measured under my seats and it doesn't look like there is a whole lot of room. Thanks.

Alex

I have a wagon, is there more or less the same amount of room as the sedan?
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