Power resistor values in Aleph 5?

Tony D. · 26th September 2002, 03:19 AM

Hello All,

I have sourced a set of matched Mills resistors for my Aleph 5 (www.soniccraft.com) and the 1 ohm are no problem but the only value I can get for the .47 is .50

After looking at some of the photos of completed Alephs it seems that some people are using standard sand cast resistors which can vary by up to 10% so I am thinking that .50 in place of .47 is not such a bad thing, is it?

Thanks for any help.

P.S., I did search the threads but got side tracked for 3 or 4 hours, this has got to be the best DIY site on the NET, Period.

Tony D.

Peter Daniel · 26th September 2002, 04:44 AM

This much difference is no problem at all. I'm using single 0.1 Caddock 16W resistor in my Aleph5 and 0.82 ohm for source resistors. It works fine.

Tony D. · 6th October 2002, 08:55 PM

Well I have received my resistors and while they are matched they are no where near 1%, the .5R's are at .7 and the 1R's are at 1.4.

Is this within acceptable limits? I know the Alephs' are tolerant of parts values but is the Aleph 5 this tolerant?

Thanks.

Tony Dempsey

wuffwaff · 6th October 2002, 09:43 PM

Hello Tony,

I think you can still use these values but how did you measure them? It´s always very difficult to measure these low values with a normal multimeter.

william

skaara · 6th October 2002, 09:58 PM

maybe you measured the resistance of resistors and resistance of leads from multimeter..

Tony D. · 6th October 2002, 11:09 PM

Thanks for the replies.

I am measureing the resistors with a Fluke multimeter and my first thought was that it may have been out of spec. so I measured a few resistors of which I know the value and the meter is working fine.

The Fluke allows me to measure R's without using leads so this variable is removed, I am going to take some of the resistors to work and have one of the technicians do a fine measurement.

At this point though I am thinking that the Mills had better sound good because they sure don't measure up to a 1% spec. as advertised, but perhaps when I get a professional measurement tomorrow things will look better, and ultimatly it is how they sound not how they measure that is important to me and I have it on very good authority that the Mills sound extremely good in the aplication I am using them in.

Tony D.

Tony D. · 8th October 2002, 05:31 PM

To set the record straight this morning one of the Techs' at my place of work measured the Mills resistors and they are actually within +/-1%.

I geuss this is the difference between a $200. Fluke MM and a full test suite.

Tony D.

skaara · 8th October 2002, 05:46 PM

what wattage are they?

Tony D. · 8th October 2002, 06:45 PM

These are the 12 watt Mills.

Tony D.

trigon · 8th October 2002, 09:19 PM

Quote:

Originally posted by Peter Daniel
This much difference is no problem at all. I'm using single 0.1 Caddock 16W resistor in my Aleph5 and 0.82 ohm for source resistors. It works fine.

Hi.

1. Would it Mills 0.1 ohm 12W be sufficient for my "Aleph 4" instead of 6x0.47ohm in parallel.?

2. For the source resistors I will be using Mills 1.5 Ohm 5W it looks good to me.

Thanks

26th September 2002, 03:19 AM	#1
Tony D. diyAudio Member Join Date: Feb 2001 Location: Vancouver, B.C., Canada	Power resistor values in Aleph 5? Hello All, I have sourced a set of matched Mills resistors for my Aleph 5 (www.soniccraft.com) and the 1 ohm are no problem but the only value I can get for the .47 is .50 After looking at some of the photos of completed Alephs it seems that some people are using standard sand cast resistors which can vary by up to 10% so I am thinking that .50 in place of .47 is not such a bad thing, is it? Thanks for any help. P.S., I did search the threads but got side tracked for 3 or 4 hours, this has got to be the best DIY site on the NET, Period. Tony D.

26th September 2002, 04:44 AM	#2
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	This much difference is no problem at all. I'm using single 0.1 Caddock 16W resistor in my Aleph5 and 0.82 ohm for source resistors. It works fine. __________________ 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

6th October 2002, 09:43 PM	#4
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hello Tony, I think you can still use these values but how did you measure them? It´s always very difficult to measure these low values with a normal multimeter. william __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Resistor Values For L Pad?	kelticwizard	Multi-Way	8	16th February 2006 01:41 AM
Resistor values	Stocker	Chip Amps	3	4th May 2004 03:10 PM
Resistor values?	randytsuch	Chip Amps	2	11th July 2003 01:08 AM
what are the aleph 1.2 resistor wattage values?	Shaun Perez	Pass Labs	3	23rd October 2002 08:16 AM
Resistor values for Aleph-X	nar	Pass Labs	1	23rd July 2002 07:29 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

6th October 2002, 08:55 PM	#3
Tony D. diyAudio Member Join Date: Feb 2001 Location: Vancouver, B.C., Canada	Well I have received my resistors and while they are matched they are no where near 1%, the .5R's are at .7 and the 1R's are at 1.4. Is this within acceptable limits? I know the Alephs' are tolerant of parts values but is the Aleph 5 this tolerant? Thanks. Tony Dempsey

6th October 2002, 09:58 PM	#5
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	maybe you measured the resistance of resistors and resistance of leads from multimeter..

6th October 2002, 11:09 PM	#6
Tony D. diyAudio Member Join Date: Feb 2001 Location: Vancouver, B.C., Canada	Thanks for the replies. I am measureing the resistors with a Fluke multimeter and my first thought was that it may have been out of spec. so I measured a few resistors of which I know the value and the meter is working fine. The Fluke allows me to measure R's without using leads so this variable is removed, I am going to take some of the resistors to work and have one of the technicians do a fine measurement. At this point though I am thinking that the Mills had better sound good because they sure don't measure up to a 1% spec. as advertised, but perhaps when I get a professional measurement tomorrow things will look better, and ultimatly it is how they sound not how they measure that is important to me and I have it on very good authority that the Mills sound extremely good in the aplication I am using them in. Tony D.

8th October 2002, 05:31 PM	#7
Tony D. diyAudio Member Join Date: Feb 2001 Location: Vancouver, B.C., Canada	To set the record straight this morning one of the Techs' at my place of work measured the Mills resistors and they are actually within +/-1%. I geuss this is the difference between a $200. Fluke MM and a full test suite. Tony D.

8th October 2002, 05:46 PM	#8
skaara diyAudio Member Join Date: Jun 2002 Location: Europe, Slovenia	what wattage are they?

8th October 2002, 06:45 PM	#9
Tony D. diyAudio Member Join Date: Feb 2001 Location: Vancouver, B.C., Canada	These are the 12 watt Mills. Tony D.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read