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Old 05-06-2000, 12:28 AM   #1
Jason
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Join Date: Jul 1999
Location: Fremont, CA 94538
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2000 Legacy GT Ltd
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Post Where to find mini & cheap radiator?

I am plannign to add a water cool system to my hot burning Soundstream amp. The amp is sitting inside the foam tray in my 2K Legacy. It just cant' get much air ventilation in there.

I am planning to run copper tube filled with coolant through the amp heatsink and use a small radiator to cool down the coolant.

Anybody got any ideas?
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Old 05-06-2000, 12:33 AM   #2
8Complex

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I'm not sure where exactly you're talking about with 'in the tray' but I'm assuming you have it on the trunk floor somewhere... You could always seal it up and run a PVC tube with a fan sucking the air out of there on one side and one running cool air into there on the other side of the amp. I think water/coolant cooling would be a bit nuts unless you're running the amp bridged with like a 1/2 ohm load. Soundstream (as far as I remember) were real good with low-impedence loads to begin with.
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Old 05-05-2000, 01:47 PM   #3
Jason
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There is a foam tray under the trunk floor for 2K Legacy. Dont' think Impreza has a one.

I do not want to cut open the trunk floor or the carpeting in case I need to sell the car. Also dont' want to turn my trunk into a oven......
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Old 05-05-2000, 02:08 PM   #4
8Complex

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Well... have you had it cut out because of excessive heat before? Even after long periods of heavy use? I'm assuming it is being used for subs... what kind of impedence are you pushing and how (bridged - parallel or series, or stereo, etc).

If you are running the amp within it's limits, I doubt you'll need to cool it like that, granted it may get a little warm, but that is to be expected. Having it covered is a bad idea, not sure if you do or not since you said in the floor so...

Maybe you should just buy some new carpet (just standard automotive grade) and match it to what is in there and pull out the original. Put a few cutouts in the new carpeting and you should be ok.
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Old 05-05-2000, 02:46 PM   #5
Jason
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It's a 705s. I am using it to push 4 full range speakers and a sub.

From what i heard, Soundstream doesn't take the heat too well. That is why I am concern about the overheating. From what I estimation, the amp runs at least 70C or more. Now, if weather gets even warmer, I will guess the amp is likely to reach 90+C.

From my work experience, electronic components won't survive in that kind of temp for long.......
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Old 05-05-2000, 03:48 PM   #6
AaronB
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That sounds like quite an ambitious project. Do you have any pictures of the area you are talking about. I haven't a clue about the foam tray area under trunk floor you are talking about.

Wouldn't it be easier to move your amp into a better ventilated area? I am sure with the amount of time and the expense in liquid cooling your amp you get a pretty nice install somewhere else in the trunk where there will be plently of air circulation.

Keep us updated on your progress. I would be interested in hearing how it goes.
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Old 05-05-2000, 04:33 PM   #7
North Ursalia
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Grab the latest issue of Crutchfield's catalog. They have an amp (a bazooka I believe) that has a remote heatsink and antifreeze kit to keep the amp cool. Yes, a radiator for an amp... who knew?
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Old 05-05-2000, 04:55 PM   #8
8Complex

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I've seen kits like that before where people actually ran some kinda liquid through the amp before (and I mean THROUGH).

I agree, you should move it to a better area, that'd be the best solution. And I think either your numbers (or my conversion) are way off... 70c is something like 158f.
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Old 05-05-2000, 09:42 PM   #9
MPREZYA
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On my continnium (slightly different thatn your 705) I have never had a problem and it's been in service for over 8 years. I did have a slight over heating problem with a 405 I had but only one channel would go into thermal roll back so much it actually shut off. I gave it a few minutes to cool and it came right back on. That channel was the center one on the amp which is the central heat source for some strange reason. Get your self some blower fans from radio shack and use those to bring cool air in or move the amp. I have some beta test's papers from when my pal who works at soundstream now did on the reference 300 if you want to see how hot it needs to be before it finally shuts off.
Rich
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