Aleph 5 resistors

vossie · 24th February 2003, 11:42 AM

I have noticed that different wattage values are promoted for the Aleph 5 1 Ohm and 0.47 Ohm resistors. I have seen 6 W and 10 W spesifications.

Problem with the 10 W resistors is size. Struggle to find good ones here in CT.

Is it OK if I use 6W ones? Most of the pics of finished pcbs show small (looks like 5W ones) resistors. Where can I find these (green color)?

Thanks,
Vossie

rwagter · 24th February 2003, 12:08 PM

I have used 3W panasonics just as in the standard alephs so 6W is more then enough

Tomasz Rodak · 25th February 2003, 05:31 AM

Hi !!!

I think you can try resistors Mills MRA-12 (12 W) from
www.partsconnexion.com, they can send you them to RSA. Resistors are big but it is not a problem considering their high quality (3,56 USD/item, 6 USD p&p).
regards
Tomek

Peter Daniel · 25th February 2003, 05:40 AM

No reason to go with 12W resistors, Mills 5W are enough and they are about the size of 3W Panasonic used by Pass Labs. Panasonics can be obtained from Digi-Key.

I thought you won that Aleph 30. Why don't you look inside?

cowanrg · 25th February 2003, 06:42 AM

there is a local surplus place that carries NOTHING of much quality except for tons of mills resistors, at very nice prices. let me know if you are interested in anything, im going there tomorrow and can at least scout out prices for you.

Tomasz Rodak · 25th February 2003, 09:09 AM

I'm sorry, I mixed up everything. Of course there is no need to use 12 W resistors in Aleph 2, and with regard to Aleph 30 which Peter Danie mentioned above I like to admit that I have been building it and I have no one workable at the moment. I will attach pictures in the near future when it is ready.
regards
Tom

vossie · 25th February 2003, 06:06 PM

Hey boys, we're talking Aleph 5, not 30 or 2 here. You can actually calculate the wattage (P=VII). As the Aleph 5 has 34 rail voltages as opposed to 25 of the 30 I did not bother to calculate and also not to consider they can be the same - just tried to take some advice wich seemed a bit too inconsistant. Have decided that the 3 Watters will be OK

Thanks for yer help,
Vossie

Oh, yes Peter, it's beautifull inside ...

Coulomb · 26th February 2003, 02:28 AM

Quote:

Originally posted by Peter Daniel
No reason to go with 12W resistors, Mills 5W are enough and they are about the size of 3W Panasonic used by Pass Labs. Panasonics can be obtained from Digi-Key.

I thought you won that Aleph 30. Why don't you look inside?

Does the fact that the Panasonics are 5% Tolerance affect the sound at all? for instance a .47 Ohm 5% resistor can drop to .45R or surge to .4935R?

Where a 1% would only drift by .0047R, hardly noticeable.

Anthony

Peter Daniel · 26th February 2003, 04:24 AM

Most important is how they are matched together. That's why I buy a 100 and measure.

Duck-Twacy · 26th February 2003, 09:19 AM

Quote:

Originally posted by Peter Daniel
Most important is how they are matched together. That's why I buy a 100 and measure.

Why then not just buy Caddocks or something of that quality?

btw I understood measuring low values wasn't easy?

24th February 2003, 11:42 AM	#1
vossie diyAudio Member Join Date: Oct 2002 Location: Cape Town	Aleph 5 resistors I have noticed that different wattage values are promoted for the Aleph 5 1 Ohm and 0.47 Ohm resistors. I have seen 6 W and 10 W spesifications. Problem with the 10 W resistors is size. Struggle to find good ones here in CT. Is it OK if I use 6W ones? Most of the pics of finished pcbs show small (looks like 5W ones) resistors. Where can I find these (green color)? Thanks, Vossie __________________ The brave might not live forever but the cautious never live at all!

25th February 2003, 05:40 AM	#4
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	No reason to go with 12W resistors, Mills 5W are enough and they are about the size of 3W Panasonic used by Pass Labs. Panasonics can be obtained from Digi-Key. I thought you won that Aleph 30. Why don't you look inside? __________________ 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

25th February 2003, 06:06 PM	#7
vossie diyAudio Member Join Date: Oct 2002 Location: Cape Town	Hey boys, we're talking Aleph 5, not 30 or 2 here. You can actually calculate the wattage (P=VII). As the Aleph 5 has 34 rail voltages as opposed to 25 of the 30 I did not bother to calculate and also not to consider they can be the same - just tried to take some advice wich seemed a bit too inconsistant. Have decided that the 3 Watters will be OK Thanks for yer help, Vossie Oh, yes Peter, it's beautifull inside ... __________________ The brave might not live forever but the cautious never live at all!

26th February 2003, 04:24 AM	#9
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Most important is how they are matched together. That's why I buy a 100 and measure. __________________ 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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24th February 2003, 12:08 PM	#2
rwagter diyAudio Member Join Date: Jul 2002 Location: Netherlands	I have used 3W panasonics just as in the standard alephs so 6W is more then enough

25th February 2003, 05:31 AM	#3
Tomasz Rodak diyAudio Member Join Date: Jan 2002 Location: Kraków, Poland	Hi !!! I think you can try resistors Mills MRA-12 (12 W) from www.partsconnexion.com, they can send you them to RSA. Resistors are big but it is not a problem considering their high quality (3,56 USD/item, 6 USD p&p). regards Tomek

25th February 2003, 06:42 AM	#5
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	there is a local surplus place that carries NOTHING of much quality except for tons of mills resistors, at very nice prices. let me know if you are interested in anything, im going there tomorrow and can at least scout out prices for you.

25th February 2003, 09:09 AM	#6
Tomasz Rodak diyAudio Member Join Date: Jan 2002 Location: Kraków, Poland	I'm sorry, I mixed up everything. Of course there is no need to use 12 W resistors in Aleph 2, and with regard to Aleph 30 which Peter Danie mentioned above I like to admit that I have been building it and I have no one workable at the moment. I will attach pictures in the near future when it is ready. regards Tom

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