what are the aleph 1.2 resistor wattage values?

Shaun Perez · 22nd October 2002, 10:59 PM

I am not sure if i am calculating the wattage values for the resistors on an aleph 1.2 output mosfets drain and source. R64-75 and R40-51 at 1.5 ohms on the source of each output are 2 watt resistors, right??????

R22-27 and R100 0.47 are 1 watt resistors on the drain of each output

Peter Daniel · 23rd October 2002, 01:14 AM

As far as I know Pass Labs is using 3W Panasonic resistors from Digi-Key.

UrSv · 23rd October 2002, 07:26 AM

I think Peter is right and it seems the Pansonics are common in the Pass products.

I was however a little concerned about the phrasing in your question:

"R22-27 and R100 0.47 are 1 watt resistors on the drain of each output"

This set of 7 resistors is common for the whole output section and should not be duplicated for each lower output FET drain.

The Panasonics are at:

http://info.digikey.com/T023/V5/0672.pdf

The type used I think for the 1.5 and 0.47 would be:

P1.5W-3BK-ND
P0.47W-3BK-ND

/UrSv

SuppersReady · 23rd October 2002, 08:16 AM

In a similar vein:

Does anyone know which brand of resistors are used in the original Alephs?

Cheers

Paul

22nd October 2002, 10:59 PM	#1
Shaun Perez diyAudio Member Join Date: Oct 2002 Location: Sacramento/San Diego	what are the aleph 1.2 resistor wattage values? I am not sure if i am calculating the wattage values for the resistors on an aleph 1.2 output mosfets drain and source. R64-75 and R40-51 at 1.5 ohms on the source of each output are 2 watt resistors, right?????? R22-27 and R100 0.47 are 1 watt resistors on the drain of each output

23rd October 2002, 01:14 AM	#2
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	As far as I know Pass Labs is using 3W Panasonic resistors from Digi-Key. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

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23rd October 2002, 07:26 AM	#3
UrSv diyAudio Member Join Date: Jan 2002 Location: Sweden	I think Peter is right and it seems the Pansonics are common in the Pass products. I was however a little concerned about the phrasing in your question: "R22-27 and R100 0.47 are 1 watt resistors on the drain of each output" This set of 7 resistors is common for the whole output section and should not be duplicated for each lower output FET drain. The Panasonics are at: http://info.digikey.com/T023/V5/0672.pdf The type used I think for the 1.5 and 0.47 would be: P1.5W-3BK-ND P0.47W-3BK-ND /UrSv

23rd October 2002, 08:16 AM	#4
SuppersReady diyAudio Member Join Date: Oct 2002 Location: UK	In a similar vein: Does anyone know which brand of resistors are used in the original Alephs? Cheers Paul

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