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B1 Buffer Preamp
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Old 8th March 2013, 08:39 PM   #3641
jacco vermeulen is offline jacco vermeulen  Netherlands
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What a relief, he met an imposter.
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Old 9th March 2013, 09:30 AM   #3642
tabarddn is offline tabarddn  New Zealand
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Interesting, I have just received my authentic Pass board with matched J's. I have been using the cheap Chinese (and was pretty impresses, even with that) with my TI - TPA3116D2 50 watts amp. I going to use two mono 25K stepped attenuators with the Pass board.
However despite much reading I cannot ascertain what would be the best caps (real life prices, no Gold plated) to use with it.
The good thing about the B1 and the TI amp is that they can both runs off of a 24 volt DC battery supply. Charge every day at night for 3 hours and audio bliss.
Any suggestions will be greatly appreciated.
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Old 9th March 2013, 01:46 PM   #3643
6L6 is offline 6L6  United States
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What quality capacitors can you easily get? Those are likely the best.
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Old 9th March 2013, 03:47 PM   #3644
richluvsound is offline richluvsound  United Kingdom
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B1 complete and working wonderfully ..... Just got to build a case for the PSU
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Old 9th March 2013, 03:55 PM   #3645
6L6 is offline 6L6  United States
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Rich, that looks fantastic!!!!!! Bravo!

Are those wooden knobs? Beautiful!

What are you powering it with currently?

Any issues with the Pearl through the B1?
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Old 9th March 2013, 04:10 PM   #3646
richluvsound is offline richluvsound  United Kingdom
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Thank you .... the knobs are aluminium .

I'm using a regulated PSU from a door entry system that I had kicking around .

17.71 VDC .

The sound of the pearl is not great , I have my phone on the other input for comparison and it sounds much .much better .??????
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Old 10th March 2013, 01:21 AM   #3647
tabarddn is offline tabarddn  New Zealand
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Hi, Sorry SL6, I maybe being a bit thick, But what are those?
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Old 10th March 2013, 01:28 AM   #3648
6L6 is offline 6L6  United States
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Lol... I'm saying don't worry about it. Caps don't make anywhere near as much difference as people like to think they do. Use whatever nice film cap you can get of the proper rating and voltage. Get the circuit working. Listen to how good it is. (And it is quite fantastic )

Then, if you want to mess with it, spend a ton of money on whatever audiophile approved caps you want and then see what kind of difference they make.
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Old 10th March 2013, 01:34 AM   #3649
tabarddn is offline tabarddn  New Zealand
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6L6, Cheers for the down to earth advice
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Old 10th March 2013, 04:48 AM   #3650
wintermute is online now wintermute  Australia
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If you are talking about the 10uF caps I believe the original used axon's. Partsconnexion don't stock the 10uF size but do have 11uF which I think should work fine. cheap too. AXON True Cap Metallized Polypropylene Capacitors at only $2.88 each

if you are only buying two they should come in well within the 250g Canada post small parcel Limit which is about $10 from memory for shipping. Bit steep paying $10 in shipping for $6 worth of caps I guess, but that's the way it goes sometimes!

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