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23rd May 2011, 11:40 AM
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#21 |
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diyAudio Member
Join Date: Jan 2008
Location: Kuala Lumpur
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Amended list:
SumR (Canada) (part number: RC0600 915 5; see post #179 and confirmed in post #181) qusp pmchoong (Malaysia) Toroidy (Europe) samoloko, mravinsky, heinz1, CeeVee, NicMac Antek (USA) alazira to be seen whether there is enough interest |
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25th May 2011, 11:24 AM
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#22 |
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diyAudio Member
Join Date: Jan 2005
Location: NW
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Amended list:
SumR (Canada) (part number: RC0600 915 5; see post #179 and confirmed in post #181) qusp pmchoong (Malaysia) Toroidy (Europe) samoloko, mravinsky, heinz1, CeeVee, NicMac, APK Antek (USA) alazira to be seen whether there is enough interest |
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26th May 2011, 03:36 AM
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#23 |
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diyAudio Member
Join Date: Oct 2003
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PRP 9372 Audio Resistors
So I have a small piece of good news for you.
If you have seen my original F5X boards, you would know that I used PRP9372 resistors (1/4W and 1W) for the main amplifier (except for the current limiting circuit), and also for the regulator RC filter. For those who have read Ed Simon's article in Linear Audio Volume 1 on resistor non-linearity tests, you will know that PRP has one of the best performance amongst those tested, at very affordable costs. Fitzfish is currently ordering them (sets) for the test team. Instead of the usual 100ppm/K types that is commercially available, e.g. PRP Quarter Watt Resistors he can get 50ppm/K ones. Again read Ed Simon's article and you will know why tempco is important for low non-linearity. I have talked fitzfish into also make them available to all, provided that he only needs to deal with one person. i.e. if you could organise yourself, collect money, send him one order, then match and distribute yourselves, ...., etc. you can have the same resistors at factory costs. Bear in mind that factory order for large quantities has a delivery time of 6 weeks minimum. Now all in your own hands.  Patrick |
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26th May 2011, 08:56 AM
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#24 |
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diyAudio Member
Join Date: Feb 2009
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Sounds like a good idea to me
As I would be interested in a couple of sets of these resistors I can volunteer to collect money, send one order to fitzfish and distribute to GB participants. To keep things simple I think it would be a good idea to decide a deadline (I guess fitzfish would like to proceed on this soon as delivery times are long) and define what a "set" covers as well as a rough estimate of price/set. Input appreciated! Cheers, Nic ----------------------------------- Tentative participant list: NicMac 2 sets |
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26th May 2011, 12:41 PM
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#30 |
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diyAudio Member
Join Date: Jan 2006
Location: North west England
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Tentative participant list:
NicMac 2 sets pmchoong 2 sets Mravinsky 2 sets APK 2 sets Chalkandtalk 1 set |
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