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Thread: Sansui AU-517 and AU-719 restorations (lotsa pics!)

  1. #11
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 7,183
    I'm AnDreW.

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    Some nice work I only wish I could drop on a pair cheap enough to refurb
    SS CD Teac VRDS25X(Audiotuned) DAC Caiman SEG+15V PSU DECK 1210 Mat Analog Studio Crystal Mods MN Base/Bearing/Platter+Ebony arm Board Feet Isonoe PSU Paul Hynes SR7EHD-27XL/DCSXL Ag DC lead/Jaeger(low-impedance) connector/3 StageRegs/Recapped PCB+No Pitch/Strobe/Light ARM SME V(Kondo Ag Rewire&Tags) MC Cadenza Black CABLES Arm Yannis SPD-4 IC Yannis 222 Litz+Ag bullets Power WAR PRE ATC SCA2 SPEAKERS ATC 50ASL STANDS Atacama PHONO Sugden Masterclass PA4 SUT Ortofon ST80SE POWER PSAudio P10

    Valve PRECroft Epoch(Mega Modded) AMP Sondex S100 SPEAKERS Tannoy 15"MG+RFC Warwick cabs+ Reference XO DECK Garrard301 Mat Teunto Bearing 401 Plinth Moldovan Arms 3009/3012(Ikeda Ag wired) PSU No9 MCAg Meister SPU CABLES Arm Yannis 420.5 Litz+ SpeakerVdH 6mm Blue IC Oyaide FTVS-510 AgWBT 0110Ag Phonostage Paradise/EAR 3009 Clone (Telefunken)


  2. #12
    Join Date: Jan 2012

    Location: Hampshire, England

    Posts: 722
    I'm Martin.

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    What about this one? Quite tempted myself, Martin


    http://www.ebay.co.uk/itm/Excellent-...b#ht_500wt_922
    Martin

    Source: Sonos CONNECT DAC: Rega DAC Amp: Rega Brio-R Speakers: Neat Motive 2.

    My system photos

  3. #13
    Join Date: Jan 2012

    Location: Manchester

    Posts: 480
    I'm graham.

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    I was actually given a Sansui Tuner by a chap. I really didn't know what it was. But the second I hooked it up to my system I just knew it was something great. It is an old wood cased tuner and I have spent some time on the cosmetics and it looks good as new and sounds great.

  4. #14
    Join Date: Jul 2010

    Location: Newbury

    Posts: 699
    I'm RichardbutpreferRich.

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    Nice job Pete and great photos. I just love the look of Sansui kit from that classic era, amazing build quality
    Rich

    Source: Squeezebox Touch, Pioneer PL-112D + Shure M75ED type2, Pioneer PD-7700
    Amp: Sansui AU-505 + Chinese 2496 (AK4396) CS8416 DAC
    Speakers: Ditton 44's

  5. #15
    Join Date: Dec 2011

    Location: Sydney, Australia

    Posts: 142
    I'm Pete.

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    Quote Originally Posted by sq225917 View Post
    When changing the values of bypass caps or attempting multiple bypasses you really should scope them out for ringing, it's all to easy to over do it. They likely sound better because the old caps will have had much higher ESR due to their age.
    Ah, I see. My father is a tech/hobbyist (with an enormous Sansui collection... we hav around 55 units between us!) and he has all of the usual diagnostic instrumentation including a 'scope.

    How would I go about measuring such 'ringing'... across the terminals of the filter caps or elsewhere in the circuit?

    I've also been advised that I should try a resistor in series with the by-pass cap (in the order of 1-5 ohms). It seems counter-intuative to me, but I guess it couldn't hurt to try it. I need to read up on this a bit more methinks.
    Logitech Squeezebox Touch > audio-gd NFB3(2014) w/ E9018 > fully recapped/restored Sansui AU-X701 and AU-719 > a healthy sprinkling of expectation bias > PMC GB1i speakers > Aurealis and Audio Principe cables

  6. #16
    Join Date: Dec 2011

    Location: Sydney, Australia

    Posts: 142
    I'm Pete.

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    One further tweak...

    The original power cable was quite... erm... 'poxy'. Thin figure 8 twin-core as fitted as standard to US models. I decided to upgrade it using some Belden 19364 power cable with 3 x 14AWG conductors, 'belfoil' shielding and integral drain wire, and a nice (not too over-the-top) Martin Kaiser silver-plated AUS mains plug. Given the size of the cable (around 10.5mm diameter) the usual strain relief/cord grip wouldn't work, so Dad sourced me some nice Thomas and Betts heavy duty jobbies which worked perfectly. They are pretty big but you don't see the rear of the amp anyway.

    Very happy with the end result, and the thin original cord is banished forever!

    A HUGE thanks to David from mains-cables-r-us for his quality customer service. Highly recommended (as most of you on here already know )












    I also made up some cables for my DAC and DI using Martin Kaiser IECs and AUS mains plugs, some heatshrink and some carbon-look Techflex.




    Logitech Squeezebox Touch > audio-gd NFB3(2014) w/ E9018 > fully recapped/restored Sansui AU-X701 and AU-719 > a healthy sprinkling of expectation bias > PMC GB1i speakers > Aurealis and Audio Principe cables

  7. #17
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 78,219
    I'm AudioAl'sArbiterForPISHANTO.

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    That should've given a massive sonic improvement, Pete, as that old power lead was pretty shit!

    It's areas like that in audio where significant advances have been made since the Sansui was produced

    Marco.
    http://www.thestainedglasscompany.com

    "A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do" -- Milan Kundera.

    BE HAPPY EVERYDAY!

  8. #18
    Join Date: Dec 2011

    Location: Sydney, Australia

    Posts: 142
    I'm Pete.

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    Quote Originally Posted by Marco View Post
    That should've given a massive sonic improvement, Pete, as that old power lead was pretty shit!

    It's areas like that in audio where significant advances have been made since the Sansui was produced

    Marco.
    Indeed Marco, first impressions are very promising. Of course, it's damn near impossible to do a A/B comparison once this kind of tweak has been undertaken, but even at low levels there is the impression that the music sounds a bit clearer and unstressed. Whatever it is, I like it!

    Now to get my brother-in-law to visit (he's an electrician) and install that dedicated power line that I've been hankering for!
    Logitech Squeezebox Touch > audio-gd NFB3(2014) w/ E9018 > fully recapped/restored Sansui AU-X701 and AU-719 > a healthy sprinkling of expectation bias > PMC GB1i speakers > Aurealis and Audio Principe cables

  9. #19
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 78,219
    I'm AudioAl'sArbiterForPISHANTO.

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    Nice one, Pete, and you've hard-wired the cable too, which is good!

    I've always loved high-end Sansui (and Onkyo) kit, as it's generally a cut above most other Jap gear

    Marco.
    http://www.thestainedglasscompany.com

    "A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do" -- Milan Kundera.

    BE HAPPY EVERYDAY!

  10. #20
    Join Date: Dec 2011

    Location: Sydney, Australia

    Posts: 142
    I'm Pete.

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    Quote Originally Posted by Marco View Post
    Nice one, Pete, and you've hard-wired the cable too, which is good!

    I've always loved high-end Sansui (and Onkyo) kit, as it's generally a cut above most other Jap gear

    Marco.
    Funny you should mention that... the temptation was MIGHTY strong to remove the IEC connector from the rear of the DAC19, install a little smoked perspex blanking plate and mains cord grommet, and wire the Belden straight into the unit itself. I may yet do this as the DAC19 is knocking my socks off and I can't see myself selling it any time soon. It is easily reversible anyway.

    I'm a BIG Sansui fanboy... my father and I have a collection of around 60 units between us nowadays. Some of their gear sounds pretty damn decent (AU-517, 717, 719, 819, 919, AU-D11, AUD11 II, and the later AU alpha stuff. The big dedicated preamps and power amp models obviously speak for themselves.

    The Japanese market saw some quite exotic Sansui gear never destined for overseas markets. Some of it is truly high-end stuff!
    Logitech Squeezebox Touch > audio-gd NFB3(2014) w/ E9018 > fully recapped/restored Sansui AU-X701 and AU-719 > a healthy sprinkling of expectation bias > PMC GB1i speakers > Aurealis and Audio Principe cables

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