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Old 9th December 2009, 11:30 AM   #1
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Default Sub Plate Amp

Yo

I'm after buying a plate amp for a sub I'm going to build.

My room is pretty small and I plan on using it to drive a 10-12" sub. I don't listen to music particularly loudly because my Mrs is "sensitive" to loud volumes

I'm in the UK - who sells fairly cheap plate amps over here? I could get one from parts express but the carriage is the same price as the amp!

Looking at about 50w - is that ridiculously low? What wattage would you guys use for a room about 3mx4m?

Thanks

Chris
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Old 9th December 2009, 11:45 AM   #2
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Europe Audio offers a few options, these will be withoutimport duties for you and shipping is from the Netherlands, so it should be cheap. The DPD option is fast and reliable, so do not over pay for UPS.
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Old 9th December 2009, 11:57 AM   #3
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Yea they have a 120W plate amp by Hypex but its pretty expensive compared to the $80 at parts express

Any other cheapo options?
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Old 9th December 2009, 04:31 PM   #4
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Here's an idea

Buy a 12V DC power supply, then get a car amplifier - those things are cheap, and the power supply is around £50.

POWERCOOL|PC750AUBA|PSU, 750W 80+ DUAL 12V V2.2, POWERCOOL | CPC is the PSU - very handy. The cheapest one is around £40, but does 450W
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Old 9th December 2009, 04:45 PM   #5
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Have you considered NOT using a plate amp? IMHO those things are horribly overrated, especially if you have to locate it far away from your system since the line level signal will pick up a lot of hum. I'm actually rebuilding my plate amp now so that it will sit on my rack. Why don't you go buy an old 100W/ch stereo amp at a thrift store and use that?
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Old 9th December 2009, 05:47 PM   #6
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Quote:
Originally Posted by leadbelly View Post
...especially if you have to locate it far away from your system since the line level signal will pick up a lot of hum.
One word: transformer
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Old 9th December 2009, 05:51 PM   #7
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Quote:
Originally Posted by davygrvy View Post
One word: transformer
Yeah, thanks for the hot tip on the more elaborate, expensive, and less elegant solution to the problem.
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Old 10th December 2009, 08:14 AM   #8
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If I use a 100W/channel amp I will have to build a seperate crossover/filter. A lot of plate amps seem to have a variable cut-off

What do you guys do in terms of a crossover for the sub?
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Old 10th December 2009, 04:07 PM   #9
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Quote:
Originally Posted by ChrisR1983 View Post
If I use a 100W/channel amp I will have to build a seperate crossover/filter. A lot of plate amps seem to have a variable cut-off
What do you guys do in terms of a crossover for the sub?
Oh, if you're system is stereo, then yes a plate amp is a very handy all-in-one solution. For an HT system, I just use the crossover in the surround receiver.

There are standalone sub crossovers out there, like this one: Creative Sound - Product Details and:
Creative Sound - Product Details

Anyway, my point was that I hate plate amps, and so if you are only looking at plate amps and these have an inflated landed price in the UK, then look outside the box to see what's available locally.

EDIT: Sorry, wrong product links: http://creativesound.ca/details.php?model=F-1
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Last edited by leadbelly; 10th December 2009 at 04:36 PM. Reason: Wrong product
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Old 10th December 2009, 05:40 PM   #10
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The thread got interesting Has anyone tried to use a class D car amp, something that can pump out about 350W? You can find such for 150-200 euro and it will be much powerful than a plate amp which has a ridiculous price, all you might need will be a transformer.
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