500 watt monoblock

[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

[richie00boy]

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

[rinox]

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

[rinox]

One other Here

[edl]

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]

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]

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

[biovizier]

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]

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

[biovizier]

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