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Thread: Macca's Lash Up 2: Lash Harder

  1. #1251
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 30,273
    I'm Martin.

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    Good idea.
    Current Lash Up:

    *Audiolab 6000CDT* SoncozSGD1 * Krell KSA100 mkII * JM Lab Electra 926 *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

  2. #1252
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 30,273
    I'm Martin.

    Default

    Well that was a good idea Grant.

    Using the NAD as an integrated with the DAC on full output - no hum at all, absolutely dead silent - what's that all about? Actually sounds even better now, although I can barely get the volume pot off zero.

    I wonder if this amp could be uprated with some 'judicious mods?' The basic circuit seems good, it's certainly clean and sweet and very pleasant to listen too. The beauty of the sound comes through, but 'rez' is not quite up there with the top tier.

    Better caps, better potentiometer, better speaker cable binding posts etc?
    Current Lash Up:

    *Audiolab 6000CDT* SoncozSGD1 * Krell KSA100 mkII * JM Lab Electra 926 *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

  3. #1253
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 76,292
    I'm Grant.

    Default

    Quote Originally Posted by Macca View Post
    Well that was a good idea Grant.

    Using the NAD as an integrated with the DAC on full output - no hum at all, absolutely dead silent - what's that all about? Actually sounds even better now, although I can barely get the volume pot off zero.

    I wonder if this amp could be uprated with some 'judicious mods?' The basic circuit seems good, it's certainly clean and sweet and very pleasant to listen too. The beauty of the sound comes through, but 'rez' is not quite up there with the top tier.

    Better caps, better potentiometer, better speaker cable binding posts etc?
    sure it could be, yes.. firebottle might be able to help even if he has retired.. as for the hum, it shows it could be cables picking up something, or a slight loop hum.. both worth trying i guess. at least its unlikely to be the amp.. gain too maybe?
    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
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  4. #1254
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 30,273
    I'm Martin.

    Default

    Thought it might be cable interference but checked that and my dressing is immaculate, power cables are all well away from the signal cables. Some sort of earth/ground loop, must be. If it was a fault on the amp it would still be there with the pre-amp in circuit. But with that in use there is just absolute silence, not even any hiss.

    Really hard to complain, this is the best sound I've had since the KSA50s packed in. It has the all-important sweetness to it, and it's slightly 'gentle'.

    The sound reminds me a lot of the old Leak Stereo 30 except with real-world power output. Although it only gives 67 watts before clipping it's more than enough for the JM Labs as they are big and high efficiency.
    Current Lash Up:

    *Audiolab 6000CDT* SoncozSGD1 * Krell KSA100 mkII * JM Lab Electra 926 *


    'You fool! To think that your ape-brain could contain the full knowledge of the Krell!'

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