Understanding the Aleph...?

Cobra2 · 21st April 2004, 06:39 PM

Hi!

I have a lot of questions about the Aleph-amplifiers...and hope you can help me get some understanding...:

If you raise the rail-voltage, (and keep bias the same), do you get more potential power-output?

And if you lower the bias only, what do you loose (exept heat and sound-quality) ?

Arne K

wuffwaff · 21st April 2004, 07:14 PM

Hi Arne,

for a Aleph the same rules apply as for most other amps. If you raise the rail voltage and leave the bias max. power will be somewhat higher at a higher load impedance. If you lower the bias power will go down below a certain load impedance.

Max. Power is always reached when voltage or current are at there maximum. If you want to have the maximum at 8 ohms you´ll have to make shure bias and voltage are right. If you want to lower the power into 8 ohm (but keep the maximum there) you´ll have to lower the bias and the voltage.

William

P.S. upping the voltage will (just as upping the bias) also up the dissipated power!

Cobra2 · 21st April 2004, 07:33 PM

So it will follow the same rules as the Aleph - X, regarding power vs output-load...right?

Arne K

wuffwaff · 21st April 2004, 07:41 PM

right,

but not the same power for the same voltage / bias combination as the X cause it is not a bridged amp.

William

Cobra2 · 21st April 2004, 10:19 PM

Is there a spread-sheet or formula to calculate the power, bias and impedance relationship?

Arne K

wuffwaff · 22nd April 2004, 09:41 AM

Arne,

I think I've ot on around somewhere. I'll have a look and otherwise will change the AXE-1 to suit the Aleph. Will post it here in the next few days.

William

Cobra2 · 1st June 2004, 12:04 AM

Quote:

Originally posted by wuffwaff
Arne,

I think I've ot on around somewhere. I'll have a look and otherwise will change the AXE-1 to suit the Aleph. Will post it here in the next few days.

William

Did you find / make that spread-sheet?

Arne K

wuffwaff · 1st June 2004, 08:38 AM

Hi Arne,

no. Didn´t have much time lately but I´ll try the next few weeks.

William

PW · 1st June 2004, 06:44 PM

Hi Arne,

i have already modified William's AXE-1. But i recommend to do it yourself, so you can learn more then just using it

Peter

Cobra2 · 1st June 2004, 07:18 PM

Will look in to it...and read....

Arne K

21st April 2004, 06:39 PM	#1
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Understanding the Aleph...? Hi! I have a lot of questions about the Aleph-amplifiers...and hope you can help me get some understanding...: If you raise the rail-voltage, (and keep bias the same), do you get more potential power-output? And if you lower the bias only, what do you loose (exept heat and sound-quality) ? Arne K __________________ Ars longa, vita brevis

21st April 2004, 07:14 PM	#2
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hi Arne, for a Aleph the same rules apply as for most other amps. If you raise the rail voltage and leave the bias max. power will be somewhat higher at a higher load impedance. If you lower the bias power will go down below a certain load impedance. Max. Power is always reached when voltage or current are at there maximum. If you want to have the maximum at 8 ohms you´ll have to make shure bias and voltage are right. If you want to lower the power into 8 ohm (but keep the maximum there) you´ll have to lower the bias and the voltage. William P.S. upping the voltage will (just as upping the bias) also up the dissipated power! __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

21st April 2004, 07:33 PM	#3
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	So it will follow the same rules as the Aleph - X, regarding power vs output-load...right? Arne K __________________ Ars longa, vita brevis

21st April 2004, 07:41 PM	#4
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	right, but not the same power for the same voltage / bias combination as the X cause it is not a bridged amp. William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

21st April 2004, 10:19 PM	#5
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Is there a spread-sheet or formula to calculate the power, bias and impedance relationship? Arne K __________________ Ars longa, vita brevis


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22nd April 2004, 09:41 AM	#6
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Arne, I think I've ot on around somewhere. I'll have a look and otherwise will change the AXE-1 to suit the Aleph. Will post it here in the next few days. William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

1st June 2004, 08:38 AM	#8
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hi Arne, no. Didn´t have much time lately but I´ll try the next few weeks. William __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

1st June 2004, 07:18 PM	#10
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Thanx Will look in to it...and read.... Arne K __________________ Ars longa, vita brevis

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