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  1. boXem

    (Europe) Master Deals Thread on Audio Product Sales

    I know one working there...
  2. boXem

    boXem A series

    Sorry, didn't have time to take pictures with them installed, and using the picture with the WBT-708 binding posts would have been misleading.
  3. boXem

    boXem @ Purité Audio

    Not an Arthur but here you go :) : boXem A 4215/E3
  4. boXem

    boXem A series

    And here we go for 2 to 5 channels amplifiers with Purifi 1ET400A power stage: - stereo A 4215/E2 1160 € - 3 channels A 4215/E3 1620 € - 4 channels A 4215/E4 1920 € - 5 channels A 1215/E5 2260 € The stereo version can be shipped within 2 weeks, the others will ship mid July
  5. boXem

    New Purifi amplifiers coming

    Purifi is seen by their shareholders as a tech company. Meaning that they have to innovate. Per my understanding, this power supply is indeed innovative, reason why it's development takes so much time. Not due to the development itself but more to the challenge to get the various worldwide...
  6. boXem

    boXem A series

    The A series are supposed to be the cheapest ones. Not for a Hypex vs Purifi reason but mainly due to their cheaper case and shorter assembly time (less cables). @vicenzo_del_paris already perfectly replied :)
  7. boXem

    boXem A series

    Thanks for spotting these mistake. They are corrected now. The currency selector is back. Arthur will be back end of May with some minor external changes (slightly modernized front plate with the new logo) and more important internal ones. Can't say more at the moment.
  8. boXem

    boXem A series

    Purifi modules make their entrance in the boXem A series with 2 new amps: - the boXem A 4222/E1 monoblock - the boXem A 4222/E2M dual mono Both are based on the Purifi 1ET7040SA and can be immediately ordered with 2 weeks manufacturing delay.
  9. boXem

    boXem A series

    It is the 2 channels {interface board + 2 NCx500} used in the A 5517/N2 - A 5519/N2 - A 5519/N3 - A 5519/N4 and A 5519/N5. Measurement was made on a A 5519/N2.
  10. boXem

    boXem A series

    Finally took the time to run some measurements on the production boards. Quite happy with the result. High gain has a sensitivity of 2V, measured SINAD 5W 4R at 107.6 dB Low gain has a sensitivity of 4V, measured SINAD 5W 4R at 109.2 dB So better than competition at equivalent gain if memory...
  11. boXem

    boXem A series

    A custom installer - customer of us - was searching for an amplification solution able to deliver 1kW into 8 Ohm. Here enter the A 5519/N2 and A 5519/N4 bridged using an Y cable (phases are already internally inverted):
  12. boXem

    boXem A series

    Hey! The SMPS1200 is an unregulated SMPS, meaning that it's output voltage decreases with load. When the output voltage is too low, it will consider that it is overloaded and shut down. Fact is that the output voltage decrease is stronger when low frequencies are reproduced. So, in case of...
  13. boXem

    boXem A series

    First want to see how these are received. Then ... De rien ;)
  14. boXem

    boXem A series

    Hello! Reason is power and the way the power limit is handled. There are combinations load/frequency that can make a pair of NCx500 shutting down a SMPS1200 (no worries, this is smooth). This won't happen with an SMPS3k.
  15. boXem

    boXem A series

    And here we go for the first amps based on the full size chassis: 2 channels NCx500 + SMPS3k from 1230 € VAT excl.: A 5519/N2 Dual mono NCx500 + SMPS1200 from 1495 € VAT excl.: A 5519/N2M 3 channels NCx500 + SMPS3k from 1535 € VAT excl.: A 5519/N3 4 channels NCx500 + SMPS3k from 1825 € VAT...
  16. boXem

    boXem A series

    And as bonus for the weekend, a picture of the optional "ears" for the full size chassis passing the rack test with flying colors
  17. boXem

    boXem A series

    Just realized that some of you guys requested more pictures some time ago. Inside Back mono Back stereo
  18. boXem

    boXem A series

    Standby and On are directly driving the power relay. When the switch is on Auto: Audio + trigger = on No audio + trigger = on Audio + no trigger = on No audio + no trigger = off after 10 minutes It look like some of the first amps built have had the wrong firmware flashed in them, making the...
  19. boXem

    boXem A series

    Hello! Sensitivity is the amplifier input voltage needed to get the amplifier clipping. Sensitivity = (max_power_in_given_load * load)^-2 / gain gain = 10^(gain_in_dB/20) If we take 700W in 4R with 29 dB gain (high), (700 * 4)^-2 / 10^(29/20) = 52.9 / 28.2 = 1.877 V RMS The same with gain at...
  20. boXem

    New Purifi amplifiers coming

    a) yes, but not before a few months b) most probably SMPS1200 (1.2 kW - 200W losses = 1 kW at the binding posts at 20Hz in 2R) and a composite gain stage.
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