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Old 8th April 2005, 11:36 AM   #1
RogerG is offline RogerG  United States
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Default 500 watt monoblock

I'm wanting to build a pair of 500/8 mono's. I can't find anything on the web about building one this powerful. Can you guys help?
Roger
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Old 8th April 2005, 12:22 PM   #2
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If it's for a sub, a pair of bridged ESP P68 will do nicely.
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Old 8th April 2005, 12:30 PM   #3
rinox is offline rinox  Italy
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500 watt... a lot of power I think it is for professional use... in this case the best is to make separate ampli to use with an electronic crossover (usually PA do it) you'll have a lot of advantages.. by the way a good starting project you'll find in Mr. Rod Elliot' s site at this address http://sound.westhost.com/project68.htm
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Old 8th April 2005, 12:37 PM   #4
rinox is offline rinox  Italy
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Default Other schematic

One other Here
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Old 8th April 2005, 12:37 PM   #5
edl is offline edl  Hungary
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for 500W-8ohm-RMS you will need more than +/-100V idle rails. It's harder to find puffer-caps and output transistors to this voltage.

So let's bulid two 250W-4ohm-RMS amplifier, and bridge them!
This way you only need +/-61V rails. (2*43V trafo)
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Old 8th April 2005, 12:59 PM   #6
rinox is offline rinox  Italy
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Edl.... excuse me but isn' t really good to bridge, beacause the really impedance viewed from bridged amply become an half of the real, so you must make an amplifier that will work without problems into 2 ohm or less... at this power is just painfull
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Old 8th April 2005, 01:11 PM   #7
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Default Re: 500 watt monoblock

Quote:
Originally posted by RogerG
I'm wanting to build a pair of 500/8 mono's. I can't find anything on the web about building one this powerful. Can you guys help?
Roger
Is it for home use? Maybe a UcD400 or 700 when it is released will do?

OK, UcD400 will give you 3 dB less than your specifications but 125 dB may be enough

www.hypex.nl
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Old 8th April 2005, 01:21 PM   #8
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Default 500W amp

Try looking at wnaudio.com - its not on the site but he does a MOS500 amp based on a bridged MOS250 250W amp in kit form or A&T. My only interest is as an existing satisfied customer.

Nick.
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Old 8th April 2005, 01:26 PM   #9
rinox is offline rinox  Italy
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Default WooooooooooooW

Really good... the optimum for PA...thanks
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Old 8th April 2005, 01:29 PM   #10
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Default PA

I use 500+250+250/8 per channel triamped into 4 ohm 92 dB/Wm loudspeakers with 1KW continuous power handling. It isn't just for PA's
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