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Old 4th February 2003, 12:26 AM   #91
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Default R.

Hi,

Hmmm,correlates with my experiences except I've not as yet tried the Rikken.

The Vishay S102 should be a good resistor though...I use it in attenuators and I can't fault it yet.

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Old 4th February 2003, 12:43 AM   #92
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S102 supposed to be more neutral. I'm getting whole bunch of them so I will report on my findings.

The difference between today compared resistors was more that I expected. It was almost like changing for a totally new preamp. And who says that parts are not important?
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Old 4th February 2003, 01:56 AM   #93
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Default Nude Vishays

Just got a pair of custom manufactured 270 ohm +/-0.05% tolerance naked Vishay S102C resistors from Texas Components (for a passive DAC I/V).

Haven't tried them in circuit yet, so I cannot comment on thier sonics. But, Arbie at Texas Components was **very** helpful, and they seem to not have a problem with small orders to DIY audio folk. The resistors were $6.10 each (generally the higher the resistance the higher the cost), no minimum, and shipped for 60 cents in a regular envelope.

Give them a try at: http://www.texascomponents.com. Their part numbers for the naked S102C series is TX2352.
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Old 4th February 2003, 04:08 PM   #94
jcarr is offline jcarr  United States
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Texas Component's TX2352 sounds very good indeed. The perceived tonal balance is quite flat, and compared to an S102K, it is less electronic-sounding overall (from soft to loud, and from bottom to top), with better low-level resolution and dynamic linearity. Imaging is more rounded and less stark. The overall perception is of a resistor that doesn't have any significant quirks and doesn't accentuate any specific aspect of the sound.

Also, the TX2352 sounds good immediately upon power-up, while the S102K needs more aging time to come on song. Even then, it never quite manages to reach the TX2352.

Physically, the TX2353 is less rugged than the S102K, but isn't fragile per se. Handle it with reasonable care, and you should have no problems. The resistive wafer may appear "nude", but it is coated with a transparent and fairly strong insulative coating, so you don't need to worry about inadverdent short-circuits. Lead pitch is the same as the S102K (3.81mm, I believe), so a TX2352 can replace an S102K with no layout changes.

Unless I need a resistor with very specific properties, the TX2352 would certainly be at or near the top of my list.

Besides, the folks at Texas Components are nice people, so do feel free to order from them!

hth, jonathan carr
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Old 4th February 2003, 05:53 PM   #95
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Default Corning Tant ID?

Does anyone have the specific part number for the Corning tantalum resistor--is it a specific mil-spec number?

Thanks

Mike
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Old 4th February 2003, 06:03 PM   #96
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Default TX2352

Hi,

Mike,

About five weeks ago I trawled the web for exactly that.
Much to my surprise absolutely nothing usable turned up.
Strange.

Steve,

Would you happen to know whether the lead-outs of those resistors are non-magnetic?

Cheers,
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Old 4th February 2003, 07:56 PM   #97
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The TX2352 Texas Components Vishays are non-magnetic. The leads are tinned copper, and are continued up and flattened where the resistive element (dark piece connecting the two leads in the photo -like an "H") is attached. .
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Old 4th February 2003, 08:24 PM   #98
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Default Sound of Resistors

Quote:
Originally posted by jcarr
Texas Component's TX2352 sounds very good indeed. The perceived tonal balance is quite flat, and compared to an S102K, it is less electronic-sounding overall (from soft to loud, and from bottom to top), with better low-level resolution and dynamic linearity. Imaging is more rounded and less stark. The overall perception is of a resistor that doesn't have any significant quirks and doesn't accentuate any specific aspect of the sound.

Also, the TX2352 sounds good immediately upon power-up, while the S102K needs more aging time to come on song. Even then, it never quite manages to reach the TX2352.

Physically, the TX2353 is less rugged than the S102K, but isn't fragile per se. Handle it with reasonable care, and you should have no problems. The resistive wafer may appear "nude", but it is coated with a transparent and fairly strong insulative coating, so you don't need to worry about inadverdent short-circuits. Lead pitch is the same as the S102K (3.81mm, I believe), so a TX2352 can replace an S102K with no layout changes.

Unless I need a resistor with very specific properties, the TX2352 would certainly be at or near the top of my list.

Besides, the folks at Texas Components are nice people, so do feel free to order from them!

hth, jonathan carr
Hi Jonathan,
I am a bit confused by your post as the TX2352 is actually a "processed" Vishay S102.
I find it hard to believe that the processing makes a that large difference.
But I also did not hear any difference between a regular metalfilm resistor and a Vishay VSH.


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Old 4th February 2003, 08:37 PM   #99
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Default THE SOUND OF IT.

Hi Elso,

The Vishay S102 bulkfoils have a rep for sounding as close to no resistor at all.
I can only confirm that from my own experiences.

The nude ones build on that quality and take it a step further even when their not really unprotected as their name suggest.

I would heartily recommend them as series Rs in sa stepped attenuator at the most used positions (to keep the price down) and have a listen for yourself.

Cheers,
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Old 4th February 2003, 08:59 PM   #100
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Vishay VTA55: sounded laid back, sort of mellow, darker in character, tubelike with midrange in the first plan

Rikken: more open than Vishay, with kinda etched highs and more detail there, bass also better defined and overall more SS sound.

My choice would go to Rikkens. [/B][/QUOTE]
--------------------------------------------------------------
You need to repeat with resistors in both directions. Can make a big difference. I tried Vishay and Rikken in passive preamp mounted in opposite directions. I prefer the Vishay . Direction makes the difference in terms of sonic balance.
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