Laser faff?
Slippy ebay mouse finger seems to have landed this on my doorstep. It will live in an old AV receiver case, now need to get 8 x 12AY7, a 6X4 and some transformers.
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Nice, what sorta cash is that Dave?
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Is it a Nobsound?
Itās a Nobsound. If you have to askā¦ etc
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Indeed @pmac , the Astra of the audio world.
@omsoc This board says Zhili Audio, but I guess that they are much the same.
@freefallrob Basic boards seem to be about Ā£45 delivered. I think that the kits were about Ā£120 for board components minus valves. This one was, according to the seller, built with UK-sourced components.
Valves are going to be about Ā£100 for the cheapest, and I havenāt priced the transformers yet.
A few people on here have built them (@murrayjohnson and @Nino, maybe more). I donāt know whether they still use themā¦
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I use mine although getting quiet 12AY7ās can be as much of a challenge for Nobsound users as it is for the Kondo fanbois. But both the JJ and the EH versions sound ok in one of these.
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I have used Westinghouse 12ay7 and JAN-GE 6072a both sounded great.
No doubt, but they are spendy & can still be prone to noise sometimes. The discerning Nobsound owner may be more careful with his money!
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When I bought mine nobody was really looking at 12ay7 tubes and the prices were very reasonable.(cheap)
The chap who sold me the board suggested Banzaimusic in Germany for valves. I might get 4 JJs, and 4 TAD High Grade for phono side. The latter are supposedly selected for low noise, though nearly 3 times the price of the basic JJs.
Or is the noise problem hum, and more to do with power supply arrangements?
Some people seemed to have hum issues but I didnāt particularly. Itās just the phono stage that really needs the quietest valves. The line stage isnāt quite so critical.
I did try the Douk recommended power transformer but I had one that failed after a couple of months & then another that went the same way. Odd really because this circuit isnāt really stressing it. I was pondering getting one of these for the next one augmented by a small 12V transformer for the filaments.
Itās also worth incorporating a small choke in the psu if youāve room. @coco re-simmed the RIAA network arriving at slightly different values to get it more accurate Did you get the switch on an umbilical to engage/disengage the relays?
I have a couple of more boards to build up so may try a very foo-ey one next time.
Original thread
Picked up the KJF speakers today, only been playing for an hour but they sound quite good. Think they may need a bit more power than the BP can give as they sound quite tame at the moment.
The guy I got them from has quite an impressive system
Kondo M7 preamp
Living Voice Argento
Kuzma XL Air turntable
Kuzma 4point 14
SPU meister silver cart
Kondo Sfz step up
Living Voice OBX-RW3 speakers
Finally got the Bryston BDA-3 delivered and really liking that. It actually sounds much better using a SBT via spdif than the Roon Rock via USB.
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Laser faff.
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nothing in my house is squared off or symmetrical, it would do my head in to have things lined up and neat
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They arenāt particularly sensitive and like power up emā.
We used them with a big Yamaha studio ampā¦
Bugger