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Salas DCG3 preamp (line & headphone)
Salas DCG3 preamp (line & headphone)
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Old 1st December 2020, 04:34 PM   #5121
Salas is online now Salas  Greece
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Salas DCG3 preamp (line & headphone)
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Originally Posted by Joel Wesseling View Post
Are the CMF55's a suggestion - Can any cheaper brand be used in these places?
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Originally Posted by Joel Wesseling View Post
Oh, looks like CMF55 are 1/2w, tolerance varies with resistance value
Yes almost all listed in the BOM are 0.5W resistors. They could be 0.25W also except R10. RZJ could be 1W, if ever used instead of a wire link to artificially augment the HP output impedance (dropping the damping factor for coloring warmer any dry cans). Because it will share some power with the cans.

Good ones are also the KOA Speer MF series. Not too expensive.
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Old 1st December 2020, 05:45 PM   #5122
Eslheadphone is online now Eslheadphone  United States
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Default Cmf55

I use CMF resistors because they are non magnetic. Many resistors have steel end caps which is supposedly not good for audio.
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Old 1st December 2020, 05:58 PM   #5123
nashbap is offline nashbap  United States
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Thanks again
What you think about Jantzen 5w superes for R1?
What would be the best resistor for this position?

I have used Vishay Beyschlag MBB and MRS series for R1. You can parallel upto 3 on these boards. Since these are 0.6w each you can make 1.8w with three of them or 1.2w with two in parallel. 50ppm and inexpensive.
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Old 1st December 2020, 06:57 PM   #5124
alexkosha is offline alexkosha  United States
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If you guys are willing to use single but the exact (or very close) values and do not mind to use bit excessive power rating, then partsconnexion still sale MRA-5s. They are the bests for such positions, but unfortunately they are not cheap.

Mills MRA-5 Resistors
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Old 2nd December 2020, 01:32 AM   #5125
savvas is offline savvas  Greece
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Originally Posted by Eslheadphone View Post
I use CMF resistors because they are non magnetic. Many resistors have steel end caps which is supposedly not good for audio.
I have come across some CFs which are magnetic and some that are not
On the other side I have yet to come across a magnetic RN.

Mouser have a good stock of high quality 1W/2W resistors, most other places don't.

For Europe Hificollective has some 2W Kiwame, 1W PRP (both 10R +) and 1W Takman metal films (2R2+). For America PartConnexion has more variety of audio resistors.

My preference is CFP series for their relative small size and good specs. Welwyn W21 (3W) has also compact size (Farnell has them)

DCG3 / FSP / UFSP has some limitations for power resistors size but BIB / UBIB are more flexible so 3W/5W can be used.
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Old 2nd December 2020, 12:27 PM   #5126
Joel Wesseling is offline Joel Wesseling  Canada
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Thanks, Guys! If there's no measurable difference, then KOA Speer is my choice, and I'll have few extra dollars for a nice enclosure
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Old 8th December 2020, 07:24 AM   #5127
nikosokey is offline nikosokey  Greece
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They came.. :
Thank you so much Mike
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Old 10th December 2020, 08:05 PM   #5128
nikosokey is offline nikosokey  Greece
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Αnd little progress.....
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Old 10th December 2020, 08:18 PM   #5129
Salas is online now Salas  Greece
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Old 10th December 2020, 08:18 PM   #5130
savvas is offline savvas  Greece
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You were quick, are you gonna make A/B comparison with the transistors/jfets, I see bases in place of mirror transistors.
Good parts, it's only I don't like PRP resistors, FGs just fitted.
What psu you gonna use?
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