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  1. W

    Dali speakers

    Thank you so much!
  2. W

    Dali speakers

    any measurement of Spektor 2 / Zensor series?
  3. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    Ran my unit at high levels for several hours powering it with 48v and failed to make it get considerably hot
  4. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    https://m.media-amazon.com/images/I/71-XpkJhhuL._AC_SL1500_.jpg
  5. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    Thanks for the detailed post with numbers. Did the A07 get too hot during 96db output?
  6. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    equivalent series resistance the most important parameter of a capacitor to keep ripple low on an output filter of a smps psu ( Switched-mode power supply )
  7. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    According to specs Less than 250mV peak to peak . There are videos on YouTube where they tested those psus and verified the specs. I installed an extra capacitor of low esr 1000uF 63V Japan brand Rubycon on the voltage rail near the amp DC input to lower the ripple even More
  8. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    https://www.banggood.com/RIDEN-RD6006-or-RD6006-W-LED-Switching-Power-Supply-S-400W-48V-or-DC12V-or-24V-or-36V-or-60V-8_3A-33_3A-Support-Monitoring-Transformer-Lighting-p-1594324.html?cur_warehouse=CN&ID=517271 or...
  9. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    usually but not always
  10. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    definitely not IPXX rated
  11. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    I bought this psu from link bellow...
  12. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    I was not impressed from the power supply they supplied with the amp, so I bought S400-48 from Banggood, that has a trimmer pot giving me the option to fine tune output voltage and also check the output with multimeter very easily. The obvious drawback as amir pointed out several pages earlier...
  13. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    Read again amir's review. He used 2 power supplies, one of the 2 higher voltage than the other. Depending on the ohms of the speakers connected and the power supply output voltage you could get either current restricted or voltage restricted in the maximum watts you will be able to get from this...
  14. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    48V is perfectly fine for 50V rated capacitors as long as you make sure with a trusted multimeter that the psu outputs indeed 48V.
  15. W

    AIYIMA A07 TPA3255 Amplifier Measurements and Review - LM4562 (and OPA2134) option

    Either way, I always like to share the results of repair attempts and modifications to electronic devices. But usually I do this on more technical forum. It would be interesting since I already own a perfectly working unit, so I can compare them and get measurements from both trying to find...
  16. W

    AIYIMA A07 TPA3255 Amplifier Measurements and Review - LM4562 (and OPA2134) option

    Please don't throw it away. I would be interested to send it to me (postage payed by me) to troubleshoot it and try to fix it.
  17. W

    AIYIMA A07 TPA3255 Review (Amplifier)

    Finally, it arrived! Got the amp for 54.35€, including shipping / any import fees and VAT. On the same day, I received the power supply I ordered from here...
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