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  1. Old Comment
    marc brown's Avatar

    First Watt B1 clone

    Do you happen to have the gerber files for your relay selector? It looks like you used Omron G6K-2P relays.
    Posted 25th October 2016 at 07:49 PM by marc brown marc brown is offline
  2. Old Comment

    Chinese class D amp modules.

    Have the same problem, interfered with FM to the point I removed the amps from my system
    Posted 20th October 2016 at 12:07 AM by scholl scholl is offline
  3. Old Comment
    Tea-Bag's Avatar

    Salas Board Minikits and Full Kits

    PLEASE Do Not write in comments below. I do not seem to get them. Please PRIVATE MESSAGE any questions or CONCERNS. Thanks!
    Posted 13th October 2016 at 12:32 PM by Tea-Bag Tea-Bag is offline
  4. Old Comment
    abraxalito's Avatar

    What is dynamics?

    DaveC's RMAF 2016 Best In Show: Austin Acoustic

    Notice the amps for the top end are fleapower type DHT. Hence the drivers need to be uber-efficient which quite possibly accounts for the stratospheric prices.
    What's needed to achieve this level of dynamics from normal efficiency drivers is exceptional amps....

    Oops, I see Amir didn't much like it, based on music he didn't much like....
    Posted 11th October 2016 at 01:31 AM by abraxalito abraxalito is offline
    Updated 11th October 2016 at 04:03 AM by abraxalito
  5. Old Comment
    abraxalito's Avatar

    Taobao shopping for 'digital' amps

    Thanks Matt, I hadn't seen the first one before, eagerly devouring its content now... I'm currently listening to my STA333BW board reconfigured as a DAC, beats TDA1387 on dynamics but on tonality its a tie (from memory). Comments on how the bass compares will have to wait until I've flattened out the frequency response - there are some internal registers on the chip which I suspect haven't been properly set up.

    Read through to the end now, but haven't followed up reading the French site. TL, DR version - upgrade your power supply. No surprise there. Interesting plots from globulegl point to the technical superiority of the D310 which is using the Intersil chipset. More to the point though that one has an internal switching PSU so will be able to get the lowest possible impedance to the chip itself.

    Here's the French language post showing the details of the D310 mods, plenty of pretty pictures - FDA D.Sound d310 - Page 53 - 30064559 - sur le forum Amplificateurs Intégrés - 1030 - du site
    I can't see from the pics which main caps he ended up with but my choice would be Nippon Chemicon KZH 2200uF/35V assuming these are 16mm diameter. The stock LXV have about twice the ESR of the KZHs. Samyoung NXA would allow up to 3300uF in the same diameter if 40mm height would fit inside the case.
    Posted 10th October 2016 at 11:01 PM by abraxalito abraxalito is offline
    Updated 11th October 2016 at 02:06 AM by abraxalito
  6. Old Comment

    Taobao shopping for 'digital' amps

    Did you see this thread, I AM D v200, Fx Audio d802, optimisation and TPA3116? There's also this thread, Full digital amplifier with chip STA326, but I see you contributed to it, so you must be aware.

    Point is, looks like that FX Audio D802 uses the STA326, which appears to be a relative of the STA333.
    Posted 10th October 2016 at 01:14 PM by matt_garman matt_garman is offline
  7. Old Comment
    abraxalito's Avatar

    TDA1521 chip amps rock!

    Yes it looks OK, I have noticed that board on Taobao before, here's the link to it -
    Its selling well on Taobao, if you use Google translate you might even be able to read the comments (assuming you don't already read Chinese).
    Posted 9th October 2016 at 05:52 AM by abraxalito abraxalito is offline
  8. Old Comment

    TDA1521 chip amps rock!

    Hi Richard,

    I am curious about the Philipx/NXP chips and stumbled across this board:

    DC 19V 24V 32V Classic TDA1521 | eBay

    Does it look ok? Otherwise I'll order a tda8566/61 with some parts.
    Posted 8th October 2016 at 08:51 AM by robert1325 robert1325 is online now
  9. Old Comment

    The best sounding I/V resistor

    Hey, thanks for the tip. The GG102A is truly amazing. Better than the previous S102K resistor. While the sound from S102K is already airy and clear, but the GG102A adds more depth (3D) and fluid. It's hard to believe a wirewound resistor will have such enhancement.
    Posted 8th October 2016 at 02:59 AM by canvas canvas is offline
  10. Old Comment
    abraxalito's Avatar

    Taobao shopping for 'digital' amps

    Hi Anton - I've been listening to the STA333BW board now for a few hours and its very highly recommended if you need a headphone DAC+amp. You will though need to make your own transformers to go with it - the output's balanced and most headphones are 3 wire (i.e. unbalanced).
    Posted 4th October 2016 at 12:51 AM by abraxalito abraxalito is offline
  11. Old Comment
    abraxalito's Avatar

    Ozone Chebyshev filter

    No, the -150 variant of this inductor looks to be 15uH, it certainly won't work.
    Posted 28th September 2016 at 11:09 PM by abraxalito abraxalito is offline
  12. Old Comment

    Ozone Chebyshev filter

    TDK SLF7045T-150M1R5-H will be ok? no

    i cent find it on ebay, maybe you have similar item to offer me, only review of the issue
    Posted 28th September 2016 at 06:43 AM by erez1012 erez1012 is offline
    Updated 28th September 2016 at 06:54 AM by erez1012
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