Preamp for Power Follower 99

[Ant1Xr1st]

I'm have finished building the "Power Follower 99" (5Abias , 81v, 100Wrms) 😉
Now i'm looking for trasistor or tube (maybe) "voltage preamp" for it (or how it's called on eng.)
*Sorry 4 my eng. Tnx.

 

[PMA]

I wonder what kind of cooling system you have used. Heat pipe?

 

[Luke]

Thats dissipating 800watts per channel
How many outputs and can we see pics of this amp and maybe a schematic🙂

 

[Ant1Xr1st]

Water cooling system, Thermaltake waterblocks & pump and ProModz 360x120mm radiator 😀
450W off dessipating power 😀

 

[Ant1Xr1st]

voltage seems kinda high for 100 W, is it +/- 40V, or are you dissipating 800watts per channel
How many outputs and can we see pics of this amp🙂

This scheme has "virtual ground operation" and uses +81v input, but in rezult, it have +-40.5
If there is a 800watt of power, mofets will burn

 

[Ant1Xr1st]

Shematic is in attachment. Case type - TO247. Every mosfet's gate have a feerite "bead"
What with the preamp scheme? Could you give me some?

 

[GoranB]

maybe you already built an preamp for power follower till now, im useing andrea's pre amp with tubes. It sounds great on midrange and high, bass is not controled well. I can sugest you to connect PF 99 to direct source, you'll get the best results that way

 

[GoranB]

Maybe here you can find some interesting sschematics for your power follower (tube designs)
HeadWize - Project: Top-Level OTL Tube Headphone Amplifier by Andrea Ciuffoli