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05-26-2008, 04:40 PM | #1 |
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What subs fit under the seats?
I have the HiFi-System with 10 speakers. 2 subs under the seats.
Does anyone know the size on the subs? Which brand should I buy? Is it plug and play? Will it play good with orginal amp? |
05-27-2008, 12:24 AM | #4 |
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The answer to your last 2 questions is no.
I prefer JL audio, everyone has their own preference. Sub diameters are 8", but what's more important is the mounting depth, the height of the sub if you will. |
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05-28-2008, 11:00 AM | #7 |
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I'd bet money that an 8w1 would fit, the problem is going to be the power supply. I think I read that the stock BMW amp supplies 40w and that's not really enough even for the w1 but it's still probably the best bet. Kicker makes a shallow CompVT that supports 50wRMS min. and that's probably going to be the closest power match in a shallow and there aren't very many shallow 8's, most shallows are 10's and 12's... Polk's MOMO 8" accepts down to 30w... The JL's typically like the power in the higher 'spec'ed' RMS range, for instance, the w1 is 35 to 150 and I'd bet it really wants 125 to 150, the polk is probably what I'd go with if your keeping the amp stock.
I'd like to pick up a pair of JL's new shallow 13Tw5's and put it in a nice shallow box behind the rear seat; at .8 cu. ft. there's a lot I could do with it and they're good to 400 or 500 watts, so throw a 300/2 on each and see how they do... |
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05-28-2008, 11:28 AM | #8 |
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image from another post. which systems are the States getting?
The HiFi as our std. and the Top HiFi as our Premium? If so, then the subs will be seeing 70w. The std. stereo in the US has subs doesn't it? |
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05-28-2008, 01:26 PM | #9 | |
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If you're using stock power it might be an issue, I doubt that can drive the 8W1 well. I will be adding a mono amp for sure. |
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05-28-2008, 02:18 PM | #10 |
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05-28-2008, 02:21 PM | #11 | |
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Yes - standard = hi-fi, and premium = top hi-fi. So 70w should be correct based on that document. |
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05-29-2008, 08:53 AM | #14 |
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Usually better subs that put out more bass require alot more watts RMS. Even if they are efficient they will require more power. I don't think changing the subs under the seats is a good idea. Just get a small single JL Audio 10", tap into the signal from the rear speakers, get a clean 300 watt RMS amp and you will have the best of both worlds. The decent bass from the OEM dual 8's under the seats and a good small lightweight sub in the trunk.
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05-29-2008, 03:02 PM | #16 |
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You can use a unit like the JL cleansweep. Since I want to conserve my trunk space and not have to worry about removing the box when I need space, I'll most likely change the subs and just run power to the subs under the seats. Shouldn't be a big deal to run some nice 12 or 14 awg speaker wire there.
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05-29-2008, 07:14 PM | #18 | |
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05-29-2008, 07:16 PM | #19 |
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That would be something I would have to investigate if I was doing it. Sometimes the signal is full freq and the speakers have a capacitor in-line to block low freq's, bass blockers.
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05-29-2008, 07:19 PM | #20 |
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The amp would be best in the trunk where air circulates. Under seats they get too hot, unless you buy a very high quality amp that is designed to go down to 1 ohm and stay cool. Amps with fans helps, but top end amps are designed to not need fans. Some have both.
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05-29-2008, 11:27 PM | #21 |
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Going to cleansweep just the subs for a nice perfect frequency, I'm picky with my bass.
Not exactly sure where I'm gonna mount it, once I get the car I'll figure that out. I definitely want it mounted away out of sight. Most likely on the left of the battery. I'm planning on going with the JL 500/1 Mono Amp, delivers steady at 1.5 ohms and has a nice huge heatsink on it. I've never ran fans in the past and never had overheating issues. If I do (which I doubt) I'll run some fans away from the heatsink. Left of the battery looks like a good spot |
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