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Santa Fe - Caravan subs

Old 12-17-2008, 09:49 PM
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Santa Fe - Caravan subs

In my Grand Caravan I had a Pioneer TS-W257D4 10 inch sub in a closed box matched to a MTX TC3001 amp. However, the sub got stolen and although I liked it, it was missing some oumph. So I'm looking at possibly moving the amp into my wife's Santa Fe and would be looking at getting her a new 10 inch sub. Any recommendation for 200-300$ range ? The head unit is to be changed (other post) and the original speakers are going to be phase 3 later on.

Now, I would need to put in new subs and amp in my Grand Caravan. Would 500w or so be alright?

Head unit is a Kenwood KDC-MP728

For now I was looking at the 2 12 inch MTX subs at Future Shop for 150$
I know it doesn't sound sexy but I'm thinking the box alone is almost worth that. Would it be that bad? Could that be matched to a half decent amp and do respectable sound ??? If not, what would you suggest ? Price range would be around 600-700$

Last edited by Stephane; 12-17-2008 at 09:56 PM.
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Old 12-18-2008, 09:28 AM
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if you are looking for more "oumph" you will probly be better with a ported box. because a 300watt in a properly designed box in a caravan should sound alright. Also I wouldnt do a sealed box in a trunk because I think you wont hear a lot of the bass.
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Old 12-18-2008, 02:34 PM
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Agree - you want more "oumph" move up to a ported box, and a 12" speaker and you'll likely have close to 2x more "oumph" than your closed 10' on the same amp.
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Old 12-18-2008, 02:46 PM
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If you liked the Pioneer sub, go with a new 12" and put it into a ported enclosure and use the existing MTX amp that you have. It will deliver the results that you need. The Premiere TSW1207D4 and TSW1207D2 subs are on sale right now, 2 for 1 - $120.00 gets you two of them. This would get you a sub for the caravan (the dual 4) and then we can use the dual 2 in your Voyageur and match it up to a mono amp like the MB Quart DCS500.1 for $250.00 or the Bassworx BA500.1 D for $200.00. Easily within budget and will definitely give you the performance that you need.
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Old 12-19-2008, 06:08 AM
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I like your recommendations folks !
The ported enclosure in the van is a piece of cake, but for the Santa fe, wouldn't a closed box take a whole bunch less room ? Are we comparing the size of a beach cooler versus a big lunch box ?

And is there any difference running a double 4 ohm voice coil with a bridged amplifier or a single 2 ohm voice coil with a mono amp ?

I know I might sound silly but numbers for numbers, I am a strong beliver that 100 watts coming from 5 volts X 20 amps does not equal 20 volts x 5 amp when talking about moving a sub motor.
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Old 12-21-2008, 06:52 AM
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Originally Posted by Stephane View Post
I like your recommendations folks !
The ported enclosure in the van is a piece of cake, but for the Santa fe, wouldn't a closed box take a whole bunch less room ? Are we comparing the size of a beach cooler versus a big lunch box ?.
Mildly over-stated. With most 12" subs, you would be looking at roughly 1 cubic foot sealed and 1.5 - 2.0 cubic feet ported. So in a cubic box design, it would be a upto a beach cooler, or half a beach cooler for the sealed (Or do you have lunch boxes that are half the size of a beach cooler.
Boxes don't have to be a cube shape - you can warp and twist them to fit into odd cracks etc that normally wouldn't be used by cargo.

Originally Posted by Stephane View Post
And is there any difference running a double 4 ohm voice coil with a bridged amplifier or a single 2 ohm voice coil with a mono amp ?.
There is a problem here. (But I'm confused by the information you provided earlier and this question). Most stereo amplifiers (bridged) are not 2 ohm stable in bridged mode. So running a double 4 on a bridged amp will overload the amp, cause heat issues and possibly blow something. You would want a dual 2 to match with the bridged amp.

Where does this bridged amp come from? In your first post I saw you mention an MTX TC3001 - which is a mono amp that is 2 ohm stable (and a good match for the pioneer Dual 4 ohm). I'm not familiar with MB Quart's line, but based on MR2NR's suggestion of a dual 2 on the DSC 500.1 that the amp is 1 ohm stable.

I'm still confused completely by that question because you changed both variables - bridged vs mono; DVC vs SVC - but gave both amps the same final load of 2ohm . . . .

Originally Posted by Stephane View Post
I know I might sound silly but numbers for numbers, I am a strong beliver that 100 watts coming from 5 volts X 20 amps does not equal 20 volts x 5 amp when talking about moving a sub motor.
Why do you introduce this to the discussion? Is there something on a spec sheet that concerns you? As for numbers (and the scenario you gave) it can go either way. It all depends on how the amps are built (voltage regulators play a big part). . . either one, depending on the make-up of the internals could produce more than the other . . . but basic power is V x A = W . . . so unless you want to challenge these basics of electronics 100 watts in, is still 100 watts in.
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Old 12-21-2008, 10:28 PM
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Yah, I guess I was confused about the MTX TC3001. I thought it was a two channels bridges into one.

What I was trying to get to was that I was wondering what setup was preferable between parallelling the two 4 ohm voice coils of the Pioneer to end up at 2 ohm or driving a single 2 ohm voice coil. Does it make a physical difference driving twice as much coil or am I looking way too deep in the weeds.

In practical terms, should I run the MTX/dvc Pioneer combo in the van or the suggested MB Quart/svc Pioneer?
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Old 12-24-2008, 03:46 PM
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You're looking too deep into the weeds.

There is little difference between a 2 ohm svc, and 4 ohm dvc when it comes to mechanical resistance (ie the weight of the cone etc) - for equal wattage, the two coils will be wound differently, yet the different windings will be very close to equal in the end. For a 500watt SVC, a thicker coil would be required than for a 500watt DVC because in the DVC each coil is only rated for 250. In the end, the difference is minimal to none (if there is a difference it would not be noticeable to the human ear)

Electrically there is no difference at all. The amp will see a 2ohm load either, and the amp doesn' know how may coils it is pushing, just the final load.
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Old 12-24-2008, 05:53 PM
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back to basic electronics - back to basic electronics.

If I could I would kick my own butt.
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