I owned a pair of Apogee Scintillas before getting the Full Range. The Scintillas sound much better using the 1 ohm connection instead of the 4 ohm connection strap option. You lose dynamics with the 4 ohm arrangement. I had a pair of Krell KMA100 monoblocks that produced a warm yet powerful soundstage. The KMA100s were one of the best amps I have owned. You still may be able to find used KMA100s.
If you want to DIY, you could build the KSA100 that is well documented on diyAudio. If you only plan to drive a 1 ohm load, I would recommend using a lower output supply voltage say 16V - 20V. You want high current with a save operating range on the bipolar outputs.
If you want to DIY, you could build the KSA100 that is well documented on diyAudio. If you only plan to drive a 1 ohm load, I would recommend using a lower output supply voltage say 16V - 20V. You want high current with a save operating range on the bipolar outputs.
1 Ohm @ only ....
Yes I have them too but they're still orig. packaged from the first buyer I buy them from, waiting for the power amps to drive them... I also have a 4 pcs. 1,2 KW toroid transformers with 34V 0 34V secondaries waiting to be used. I read a lot of various reviews and there are only a few amps to drive them as they should be driven. I know it is an illusion but maybe one day will happen the Holy-Grail from Papa to us with its X (SicCarbide) version with enough op. trs. to make us heaven here on the earth...... will pray daily ....
C. B.
I owned a pair of Apogee Scintillas .....If you only plan to drive a 1 ohm load, ....
Yes I have them too but they're still orig. packaged from the first buyer I buy them from, waiting for the power amps to drive them... I also have a 4 pcs. 1,2 KW toroid transformers with 34V 0 34V secondaries waiting to be used. I read a lot of various reviews and there are only a few amps to drive them as they should be driven. I know it is an illusion but maybe one day will happen the Holy-Grail from Papa to us with its X (SicCarbide) version with enough op. trs. to make us heaven here on the earth...... will pray daily ....
C. B.
The Medieval To-Do List is pretty full.
Still, it would be fun.
This is what I'm waiting for.....
Please pretty please with J-fets on top?
Russellc
Sometimes I wonder if people don't think this is Do-it-for-Me rather than Do-it-Yourself.
Take an F4 or a BA2 with well matched outputs, and lots of Heat Sink, lower the Source resistors in the outputs and raise the bias to 25-30Watts/device.
That should get you started. If you want the SS SiC JFETs in the output, you will have to go even further. On the order of 2 times more medi-evil. I guess you could build a BA1 with all 6 pair in the output and high bias?
Take an F4 or a BA2 with well matched outputs, and lots of Heat Sink, lower the Source resistors in the outputs and raise the bias to 25-30Watts/device.
That should get you started. If you want the SS SiC JFETs in the output, you will have to go even further. On the order of 2 times more medi-evil. I guess you could build a BA1 with all 6 pair in the output and high bias?
F5 turbo 4pr min /ch .....
+1
But if it were me I would either build the F5TV3 with 8pr/ch or
the AlephX or F4X and double the transistors
And don't skimp on the PSU.
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That'll do the trick.... two monoblocks would be the same size as an apartment style fridge though.
Well Nelson did say to go medievial....
All you need are enough output transistors in parallel to be able to deliver the current required to drive the low impedance load. The trick would be keeping it in class A as this would require a lot of standing current. This isn't specifically a problem if you do not need much voltage swing and can use a low absolute number of 8 ohm watts.
Even if you are using 25-35 volt rails you will still need a lot of heat sinks!
Even if you are using 25-35 volt rails you will still need a lot of heat sinks!
SUNFIRE 300x2 or 600x2
1 or 2 ....
WITH THE "SCINTILLA MOD" (stable to 0.5 ohms impedance)
2000 or 4000 watts @ 0.5 ohms
Quick question what does the Scintilla mod to the Sunfire 600x2 involve?
Useful document here refers to the Krell KSA / KMA series from 80 to 400
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