Slewmaster - CFA vs. VFA "Rumble"

Would be this amp (the arcwelder) suitable to power a peerless 830500 subwoofer? Anybody use it in that way? Or maybe advice for another amp.

Overkill , Just 3 pair outputs and a lower (45-0-45 Vac) trafo for 60 volt
rails would push the peerless to it's limits.
You could even drop the input stage voltage in the cap multipliers to
limit the acrwelder output to a safe level.

All 5 pairs (with 5 pair MT-200 sanken outputs) would most likely push the 500W
subs all the way.
For instance , Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
This sub ... wire the 2R DVC in series , 70V rails , 5 pair of the big sankens.
Scary....

PS - for the peerless I would use the arcwelder ... for 500W subs - I would go Class D. Class D could go inside
the sub enclosure , just the plate of the amp could be the heatsink. A 250W arcwelder would have a managable
external heatsink 250mm x 100mm.

OS
 
Last edited:
All are EF3.
The smaller 2/3 pair versions would most likely have more distortion with
2/4R loads because of current limitations.
The "arc welder" had massive 20A traces/5 pair , hence the name. At >10A+,
just the layout could increase/decrease THD.
Otherwise , all versions are identical.

If you want go all the way , Arcwelder + 5 pair Sanken MT-200 230W BJT +
1000VA 60-0-60 trafo + 100K uf caps - drives the biggest subs out there !!
OS
 
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Joined 2006
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Hi OS

In your wolverine schematic you have a LED in the VAS CCS (D5 in the schematic below)

Would you care to explain why is it there ?
 

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