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Thread: Passive preamp buzzing?

  1. #91
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 18,315
    I'm Martin.

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    Quote Originally Posted by Bigman80 View Post
    . And yes Ali, the autoformers are on the radar but WTF is everything so expensive!!!!!!
    The really good stuff is expensive, and when you cost it you see why. No such thing as a free lunch. I figured out a while back that the only way I can afford the standard I want is to buy second -hand or DIY. It's shame but there it is. Of course there is a lot of expensive stuff that is just average. But it isn't hard to avoid.

    The Autoformer passive Ali recommends building is the one I would go for. I agree with him it sounds better, or should I say, I preferred it, to the Music First Silly Money passive.
    Martin



    Current Lash Up:

    Sony X505ES CD Player * NVA P90SA passive pre / NVA A30 Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

  2. #92
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 3,745
    I'm Oliver.

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    Quote Originally Posted by Macca View Post
    The really good stuff is expensive, and when you cost it you see why. No such thing as a free lunch. I figured out a while back that the only way I can afford the standard I want is to buy second -hand or DIY. It's shame but there it is. Of course there is a lot of expensive stuff that is just average. But it isn't hard to avoid.

    The Autoformer passive Ali recommends building is the one I would go for. I agree with him it sounds better, or should I say, I preferred it, to the Music First Silly Money passive.
    When I'm not trying to pay for a new tonearm, I will have a look. I'm sure Ali offered to wire it up for me too lol.

    Sent from my EVA-L09 using Tapatalk
    Technics SP10 MK2 > Phonomac AT-1010 tonearm > ZYX R50 Bloom cartridge > Jolida JD9 MKII > Firebottle Monoblocks > Creek OBH-11SE Headphone Amp > IXOS Speaker Cables > Pioneer CS-77A Speakers

  3. #93
    Join Date: Mar 2011

    Location: Preston

    Posts: 196
    I'm Paul.

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    Quote Originally Posted by Bigman80 View Post
    Well thanks guys for all the input. I understand next to none of it

    Geoff, I F@cking love that weird preamp. And yes Ali, the autoformers are on the radar but WTF is everything so expensive!!!!!!

    Depressed by my lack of funds, I have mutilated my own preamp.

    Shoddy workmanship yes. Quality silver and copper cable - yes result ? Well, I am now convinced that a mono volume pot setup would get this little Frankenstein to about 90% of the GP. Crazy.

    It's now only lacking that last /1000th of performance but the soundtage and separation is definitely a step behind. I am convinced another volume pot would add that so I shall try it when funds allow.


    Sent from my EVA-L09 using Tapatalk
    I doubt two alps would do much if anything. You'd be better buying a stepped attenuator. No idea if the Vale things on ebay are any good, but a DACT switch is miles better than an Alps blue - I have a similar box to yours only mine is even uglier and the move to the DACT was significant, much more so than fancy shunt resistors, plugs, wire etc. I'd be tempted to install a common earthing point and run a dedicated earth from the alps and the switch to it (star earth) but you look to have done a nicer job than I did between the plugs and the earthing in a passive is vital.
    SBT/Chromecast/TEAC T1 into TEAC D-T1 DAC or olde-worlde Rega Planar 2 controlled by Rotel RC850 into HH S500D or DACT Passive Pre into Mullard 5-20 monos. Then into Tannoy Cheviots and a Wharfdale sub. All connected by colourful cables.

  4. #94
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 3,745
    I'm Oliver.

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    Quote Originally Posted by pgarrish View Post
    I doubt two alps would do much if anything. You'd be better buying a stepped attenuator. No idea if the Vale things on ebay are any good, but a DACT switch is miles better than an Alps blue - I have a similar box to yours only mine is even uglier and the move to the DACT was significant, much more so than fancy shunt resistors, plugs, wire etc. I'd be tempted to install a common earthing point and run a dedicated earth from the alps and the switch to it (star earth) but you look to have done a nicer job than I did between the plugs and the earthing in a passive is vital.
    DACT? Got a link?

    Sent from my EVA-L09 using Tapatalk
    Technics SP10 MK2 > Phonomac AT-1010 tonearm > ZYX R50 Bloom cartridge > Jolida JD9 MKII > Firebottle Monoblocks > Creek OBH-11SE Headphone Amp > IXOS Speaker Cables > Pioneer CS-77A Speakers

  5. #95
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 3,801
    I'm Alan.

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    Ooh, the makers not going to be happy

    Have you connected the shields of the coax used to anything? Doesn't look like it.
    You could have just pulled the centre conductor out and used that.


  6. #96
    Join Date: Mar 2011

    Location: Preston

    Posts: 196
    I'm Paul.

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    Quote Originally Posted by Bigman80 View Post
    DACT? Got a link?

    Sent from my EVA-L09 using Tapatalk
    www.dact.com/html/attenuators.html

    http://www.partsconnexion.com/controls_vol_dact.html

    not sure where you can buy them in the UK. About 130 I think.

    Re Alan's post - one option with multi core cable is to connect the shield to the earth of the plug but don't connect the other end.
    SBT/Chromecast/TEAC T1 into TEAC D-T1 DAC or olde-worlde Rega Planar 2 controlled by Rotel RC850 into HH S500D or DACT Passive Pre into Mullard 5-20 monos. Then into Tannoy Cheviots and a Wharfdale sub. All connected by colourful cables.

  7. #97
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 3,745
    I'm Oliver.

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    Quote Originally Posted by Firebottle View Post
    Ooh, the makers not going to be happy

    Have you connected the shields of the coax used to anything? Doesn't look like it.
    You could have just pulled the centre conductor out and used that.

    Haha sorry to butcher your work,Al. Nope just used the center. Last bit I did I realised I could remover the center lol. Typical.

    Knowing I can ring you to fix it gave me the confidence to attack it lol

    Sent from my EVA-L09 using Tapatalk
    Technics SP10 MK2 > Phonomac AT-1010 tonearm > ZYX R50 Bloom cartridge > Jolida JD9 MKII > Firebottle Monoblocks > Creek OBH-11SE Headphone Amp > IXOS Speaker Cables > Pioneer CS-77A Speakers

  8. #98
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 3,745
    I'm Oliver.

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    Cheers!

    Sent from my EVA-L09 using Tapatalk
    Technics SP10 MK2 > Phonomac AT-1010 tonearm > ZYX R50 Bloom cartridge > Jolida JD9 MKII > Firebottle Monoblocks > Creek OBH-11SE Headphone Amp > IXOS Speaker Cables > Pioneer CS-77A Speakers

  9. #99
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 73,910
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Macca View Post
    The really good stuff is expensive, and when you cost it you see why. No such thing as a free lunch.
    I completely agree, but as long as the money has been spent where it matters most. Sadly, that's not always the case with some expensive stuff. It has to be expensive for the right reasons!

    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.

  10. #100
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 1,052
    I'm Lawrence.

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    Quote Originally Posted by Yomanze View Post
    The potentiometer / stepped attenuator and the input selector i.e. switch contacts.
    And the wires, box and solder. Oh yes and the feet. But I don't think the colour matters so much.

    Sent from my NEM-L51 using Tapatalk

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