|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
69.71.1.1
In Reply to: RE: Observations on some custom Khozmo stepped attenuators posted by Sherwood Forest on November 09, 2014 at 12:40:35
...they should sprout wings and fly. I don't like the fact that they are not sealed against oxidation and dust. Tube gear has to be ventilated and with the ventilation comes some dust unless it's filtered and that requires a strong fan that is noisy. Moe
"...the fool doth think he is wise but the wise man knows himself to be nothing but a fool." Will Shakespeare
Follow Ups:
The price seems reasonable to me. Keep in mind that these were custom made attenuators. There is no such thing as a 1K 48 position stepped attenuator unless you have one custom made. Trust me, I looked for quite a while.
As to the issue of them not being sealed, well, oxidation shouldn't be a problem when the contacts are gold plated. I'm of the opinion that even sealed pots/attenuators get dirty and eventually need cleaning - but the sealed ones don't like being opened or cleaned. These do breathe a bit, but at the same time, you have complete access to spray them out, and you can even disassemble them should the need arise.
'The price seems reasonable to me.'
I build an entire project for what was paid for those attenuators . You must have money to burn :)
Al
I know you meant that in jest Al, even though you're probably being literal.
But think about it - each mono attenuator has 48 SMD resistors installed. My entire order, custom, required 288 SMD resistors to be soldered. Then there's the parts cost.... If somebody asked me to make them a custom part like that, I'd have to charge even more to make it worth my time.
I think I did pretty well, considering. Again, there _are_ no 1K stepped attenuators out there, so ~120 a piece is reasonable I think.
At any rate, I get your point. Most projects of mine would never get that kind of luxury item installed, but the whole design philosophy for the amp I'm currently building is 'cost, size, efficiency, no object'. No small wonder I've racked up around $10K in parts and services on this thing so far. This is my end-all be-all amp, once I'm done with that I can go back to restoring and modding my vintage stuff.
Cheers,
SF
- BTW - did you happen to notice in that chart that there are a couple of positions that have the same values? This is probably due to availability of resistor values.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: