High Current Amp ?

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carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 27, 2003 at 10:39 AM / IP Logged

ok im doing a system in my friends BMW 3series

now im are going to put either 2 or 3 10JLW6's in the back and were looking for a good amp to push them

now first question

-- does a high current amp require that you change the altenator???

--what amp would you recomend to push theses subs to get full power from them???

pLEASE LET ME KNOW

THANKS

auex

Platinum - Posts: 5,041

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Joined: December 23, 2002

Location: Arizona, United States

Posted: December 27, 2003 at 12:00 PM / IP Logged

It really depends on the amp and its current draw as to whether you need to up the alternator. The amp is going to be the second or third thing to think about in the car, the first two things should be the box design and how you are going to get the sound into the cab of the vehicle.

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jeffchilcott

Platinum - Posts: 2,483

Joined: April 11, 2002

Location: United States

Posted: December 27, 2003 at 12:31 PM / IP Logged

If i was looking to design a jl system, which i love jl products. I would recomend 2 10 jlw6v2's instead of 3 jl w6's you will be alot happier with the sound quality and spl levels. As far as an amp i have hooked up 2 of these sub config's ina vented box to a rockford 800a2 and it sounded very nice, it was able to push 148.8 in a standard car. and 151.3 in a hatchback with some power mods basically a 5 farad cap and a yellow top under the hood..let me know if you need help with the box i do still have spec's for these boxes

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carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 27, 2003 at 12:44 PM / IP Logged

yeah i told him to too go with the w6v2 but he has the w6 already thats y he wants to keeep them

als o im going to have the subs fire in to the car from behind the seats

also if u can help me design a box that would be kool.

im not to sure what amp he wants to get but if u have a good suggestion please let me know

thanks

jeffchilcott

Platinum - Posts: 2,483

Joined: April 11, 2002

Location: United States

Posted: December 27, 2003 at 12:54 PM / IP Logged

i wouldnt recomend firing the subs into the car, with a vented or ported box it is best to let the repercussion off the trunk lid return to inside the car i will try to draw up a box and post today

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carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 27, 2003 at 2:36 PM / IP Logged

ok then what if i hvae them fire to the trunk and put a plexi glass back on them so you can see the magnets how thick would the plexi have to bee??

also the box you are going to draw will it fit tight against the seat ina 02 bmw 3 series

also if you could maybe email me the plans and letme know some otheroptions i might have

thanks

bboy411@aol.com

jeffchilcott

Platinum - Posts: 2,483

Joined: April 11, 2002

Location: United States

Posted: December 27, 2003 at 3:36 PM / IP Logged

I would go with a 3/4 or 1 inch plexi..but plexi gan be expensive if you are buysing sheets from stores like home depot, try to find some old boxes for salvaging plexi, try local pawn shops they normally have boxes laying around if you cant find any i can get a good sheet off an old box for you

2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 28, 2003 at 12:31 AM / IP Logged

only thigi really want to clear up is how much of a difference will firing the subs in to the car and in to the trunk make a difference in sound and quality byt hat much???

thanks

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 28, 2003 at 5:02 PM / IP Logged

ok i made a little mistake he had told me that he had w6's but i looked today and he has the w0's 4 ohm

now im thiking of using 3 of them facing the trunck which amp and box size do u recomend now

also remember u said dont face them into the car.

i had this crazy i dea that face 2 subs to the trunk and 2 subs facing the inside would the y cancell each other out

tell me what you think

thanks

Durwood

Copper - Posts: 126

Joined: November 30, 2003

Location: United States

Posted: December 28, 2003 at 6:57 PM / IP Logged

Well, the 10W0-4 ohm model can handle 125 Watts RMS power each. They're single-voice coil, so the only configuration that really makes sense is to parallel them all together for a 1.33 ohm load. You need an amp that's 1-ohm stable and puts out 200-675 Watts RMS. With the relatively low sensitivity of the 10W0-4 (85.5 dB/W-m), I'd tend towards the high end of that range. A 2-ohm stable amp might work with a 1.33-ohm load, if the amp is rated conservatively. I think JBL has a 600-watt mono amp that's 1-ohm stable, and there are probably several other brands/models as well.

Scott Gardner

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