Recent content by March Audio

  1. March Audio

    March Audio Sointuva Speaker

    All input and suggestions welcome :)
  2. March Audio

    March Audio Sointuva Speaker

    Found the Toole quote on bass performance
  3. March Audio

    March Audio Sointuva Speaker

    The value proposition? Well first thing is these will be custom made to your aesthetic taste, be it colour or the wood finishes that are available. There are a lot of reasonable performing speakers out there but many of them are aesthetically terrible IMO. Im not interested in cheap plastic...
  4. March Audio

    March Audio Sointuva Speaker

    So as a final check I rebuilt the prototype with the production crossover PCBs and re-measured. Yes that blip will be sorted for production ;)
  5. March Audio

    March Audio Sointuva Speaker

    Beam width about 75 - 80 deg (second line from centre is -6dB, -3dB spacing)
  6. March Audio

    March Audio Sointuva Speaker

    Over the weekend I found a problem with the speaker cable used for the testing. A loose connection was casing a (relatively) high resistance which was having an impact on the response. After fixing a further XO tweak was necessary, but the end result is that the data has improved. On Axis
  7. March Audio

    Infinity Reference 253 Review (speaker)

    Well I think you need to put this into context. *ALL* electronic products have a potential for and will have failures. There appears an issue here. Whether its an uncontrolled design/component change or failure I would hope that the level of HF deviation would be readily noticeable to anyone...
  8. March Audio

    Infinity Reference 253 Review (speaker)

    Whilst I would be surprised if this sent your amp into protection, so its unlikely IMO as a cause, when the phase angle is around -45 deg its going to double the power dissipation in the amp. So it will be seeing more like an equivalent 2.5 to 3 ohm load between 100Hz to 150hz
  9. March Audio

    March Audio P452 Purifi Based Stereo Power Amplifier

    Hi @sky176 You may have missed the message on the ordering page which states that there is a 1 to 2 week lead time at the moment due to unpredictable delays in component supply due to covid. We have been working hard and have nearly cleared a backlog (we build in customer order) that was...
  10. March Audio

    SOLD: March Audio P502 Amplifier

    It is a bit above typical sensitivity at 88dB/2.83v/m but certainly a challenging load. The 45 deg phase angle at 80 hz means the amp will dissipate twice the power so equivalent to about a 2 ohm load. However it will cope just fine.
  11. March Audio

    SOLD: March Audio P502 Amplifier

    Quite happy and stable with 2 ohms and below, will deliver 27 amps.
  12. March Audio

    DIY Purifi Amp builds

    Its not "sensitive" but it is dc coupled. It will pass it through. If your pre sends out dc spikes at switch on/off they will be amplified and sent to the speakers. BTW there is no need to keep the purifi on permanently for "performance" reasons.
  13. March Audio

    March Audio Sointuva Speaker

    Distortion Brown Fundamental Black THD H2, H3 Red H2 Orange H3 Prototype has rattle at 350Hz. Will be fixed in production. 2.83 v (85dB) 96dB
  14. March Audio

    March Audio Sointuva Speaker

    No, I have designed a 3 way active DSP floorstander previously plus a very small passive bookshelf, but that was for my own use. This is the first commercial one.
  15. March Audio

    March Audio Sointuva Speaker

    Low frequency response
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