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Thread: DIY phonostage.

  1. #11
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    Nat it was a long one to keep track of, the good threads always are. first impressions are good, very good.

    Paul, i think I'm juts going to build it up low-rent in the first instance, using crappy plugs and any old coax for signal. Once I'm 100% sure of the locations of all the parts and routing then I'll move onto something better, so i might be in touch in a couple of weeks.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  2. #12
    Join Date: Aug 2012

    Location: Denver, Colorado

    Posts: 446
    I'm Jim.

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    I'm not much of a cable guy... being a hard-core DIYer.

    But I do know that you could try all the RCA jacks in the world and never find one better than just making a captive cable tied directly into the MPP's input.

  3. #13
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    That's a great suggestion. Except this will be in 3 boxes when finished and my tonearm cable is one piece, so if I soldered it to the boards I'd have to remove the tonearm to move the boxes round...

    I like ruthless minimalism as much as the next man but that may be too hairshirt even for me. I'll settle for a continuous shield from headshell to input points on the board via short lengths of internal coax.

    Ring-Ring! Awesome my transformers are here. I can wire up the other channel.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  4. #14
    Join Date: Jan 2008

    Location: South West England

    Posts: 906
    I'm Guy.

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    Are you restricted to RCA phonos in something that is for your own personal use?

    I've never actually done any listening comparisons between RCA & other types of connector but do find it plausible that other types might give a better result.
    Of course it would then require custom cabling but you could certainly hardwire the o/p cables in place.

  5. #15
    Join Date: Aug 2012

    Location: Denver, Colorado

    Posts: 446
    I'm Jim.

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    The other option to consider is a phono-DIN.

    Or Lemos. They are really nice.

  6. #16
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    Thanks for all the helpful suggestions. I went with the cheap AudioNote silvers, because they have a small hole mount diameter which leaves room for fancy plugs later.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  7. #17
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    Well I finally got it all wired and fired yesterday. Left channel was a little hollow sounding and stereo was a bit off. Traced it down a short between the source and gate of one of the transistors that feed a current mirror. Dirty dollop of solder removed and hey presto.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  8. #18
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    Lizzie caught me making some annotations to mod my phonostage this morning, and asked me what all the symbols meant, capacitor, LED and resistors. This afternoon she came in while I was soldering and asked if she could make something for my hifi.



    The chav cap was her idea...
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  9. #19
    Join Date: Mar 2009

    Location: South West-ish, UK

    Posts: 186
    I'm Patrick.

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    The girl's got talent. I think you should make the led light up for her though.

  10. #20
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,354
    I'm Simon.

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    Next time round I'll do a couple handing over a baton in a relay race that way i can make it a circuit.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

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