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Lightspeed Attenuator a new passive preamp
Lightspeed Attenuator a new passive preamp
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Old 14th April 2015, 04:37 PM   #5401
mortron is offline mortron  Canada
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Originally Posted by stajo View Post
Nyone interested in a gb? I can set it up and match.
I do not wish to do the matching myself, and have been lead to believe nobody sells matched sets anymore. I wish they did, but apparently no. In that case, I would entertain something. If you'd like, PM me so as not to derail the thread.
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Old 14th April 2015, 05:03 PM   #5402
udailey is offline udailey  United States
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If you dont want to match then try shunt attenuator. At least you will know the benefits and maybe decide to match your own.
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Old 14th April 2015, 08:37 PM   #5403
georgehifi is offline georgehifi  Australia
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Quote:
Originally Posted by mortron View Post
I do not wish to do the matching myself, and have been lead to believe nobody sells matched sets anymore. I wish they did, but apparently no. In that case, I would entertain something. If you'd like, PM me so as not to derail the thread.
Look at my very first post (No. 5) of this thread on how to match them yourself.


http://www.diyaudio.com/forums/analo...tml#post924390

Administrators have allowed a rehash of the first post, so all can easily find and do one for themselves.

Cheers George
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Old 15th April 2015, 03:14 PM   #5404
stajo is offline stajo  Sweden
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$2.42 at Silonex - NSL-32SR2S - Optoelectronics & Lighting - Optocouplers/Optoisolators - Allied Electronics is the best price I found now. If buying 100.
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Old 15th April 2015, 03:34 PM   #5405
mortron is offline mortron  Canada
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Originally Posted by stajo View Post
Hopefully I won't need 100 to get a matched set

I am seriously considering going through the trouble if need be, as the LDR seems to get a fair deal of praise.
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Old 15th April 2015, 09:25 PM   #5406
georgehifi is offline georgehifi  Australia
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Like I've said in the 1st post,
http://www.diyaudio.com/forums/analo...tml#post924390
you'll only need around 15 x NS32SR2S to get 2 matched quad sets so go halves with a buddy get 20, a quad set each and then maybe a third set you could sell here.

Cheers George
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Old 20th April 2015, 04:47 AM   #5407
mortron is offline mortron  Canada
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Thanks George,

Would a tester like this suffice?

Good Handy 2 150mA LED Bulb Light Lamp Tester Test Meter Box Tool for Arduino | eBay

I am quite tempted to order 15 and give it a go. I cant find anyone local to split with but still feel like it will be a good investment. Currently just reading through posts from members who matched their own to see how their attempts have panned out.
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Old 20th April 2015, 04:58 AM   #5408
georgehifi is offline georgehifi  Australia
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Quote:
Originally Posted by mortron View Post
Thanks George,

Would a tester like this suffice?

Good Handy 2 150mA LED Bulb Light Lamp Tester Test Meter Box Tool for Arduino | eBay

I am quite tempted to order 15 and give it a go. I cant find anyone local to split with but still feel like it will be a good investment. Currently just reading through posts from members who matched their own to see how their attempts have panned out.
I would go either of these as they go lower than 2mA

LED Tester Check THE Function Brightness Colour Polarity | eBay

Kemo M087N Light Emiting Diode Tester LED Tester Made IN Germany | eBay

Cheers George
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Old 20th April 2015, 07:44 AM   #5409
Ola is offline Ola  Estonia
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I did a cheap-and-dirty LDR regulator. Bought 5 non-selected ones. 2 in series are with constant voltage and 2 shunt regulated. Matched shunt ones for my real loudness needs.
Serial ones are set for 9,6 kOm and shunt ones work mostly somewhere between 200 ohm and 2 kOm, but they are actually good match up to 10 kOm.
Had black Alps before, with LDR-s sound in so much better, I didn't think that upgrade can be soo big.
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Old 21st April 2015, 12:06 AM   #5410
mortron is offline mortron  Canada
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Thanks. I will keep my eyes open for one that goes that low. No shipping to Canada on that cheaper one. There are plenty of reasons I wish I was an Aussie... This is one of those times The cost of this is starting to run away from me, and want to save what I can where I can. Not looking like this will be the place haha.
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