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-   -   500 watt monoblock (http://www.diyaudio.com/forums/solid-state/55005-500-watt-monoblock.html)

RogerG 8th April 2005 10:36 AM

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

richie00boy 8th April 2005 11:22 AM

If it's for a sub, a pair of bridged ESP P68 will do nicely.

rinox 8th April 2005 11:30 AM

500 watt... a lot of power :bigeyes: 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 :D at this address http://sound.westhost.com/project68.htm

rinox 8th April 2005 11:37 AM

Other schematic
 
One other Here

edl 8th April 2005 11:37 AM

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)

rinox 8th April 2005 11:59 AM

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

peranders 8th April 2005 12:11 PM

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 :scratch: :D

www.hypex.nl

biovizier 8th April 2005 12:21 PM

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.

rinox 8th April 2005 12:26 PM

WooooooooooooW
 
Really good... the optimum for PA...thanks

biovizier 8th April 2005 12:29 PM

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 :devilr:


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