I recently reviewed the boXem ARTHUR 2408/N2 class D stereo amplifier. This is a follow up teardown of the unit. A handful of screws keep the case together making it easy to take apart:
I must stay, this is a beautiful looking build. Starting with power plug, we see the whole thing has been covered with heatshrink tube, highly minimizing the danger of terminals coming loose and making connection to the chassis. A proper earth safety terminal is connected to bare chassis as it should be.
The amplifier has auto turn-on so a sense board is used to detect the signal from the XLR connectors to the input of the Hypex NC122MP which is a combination stereo amplifier and switching power supply. Paint/anodization has been removed from most of the chassis to allow for better heat transfer. Many holes are drilled which increase the surface area of the case to allow better convection cooling.
Output wires are tidy and go the shortest distance to the speaker terminal and kept away from each other, aiding in its great crosstalk measurments. Likely that custom board helps with that as well.
Cable for the front panel clipping and power on indicator has been nicely tie wrapped to the case rather than using stick on clamps which come unglued easily.
Everything within the control of the builder has been done to create a nice and clean amplifier around that Hypex module from safety and performance point of view.
Conclusions
It is easy to dismiss the roll of companies building amplifiers around these hypex modules. Yet we usually see a lot of missteps which potentially make the devices less safe and performant. The opposite is the case here. Clearly the designer paid attention to everything including adding custom modules/features to make the device more than just the bare amplifier. This is a model of how it should be done.
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As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
I must stay, this is a beautiful looking build. Starting with power plug, we see the whole thing has been covered with heatshrink tube, highly minimizing the danger of terminals coming loose and making connection to the chassis. A proper earth safety terminal is connected to bare chassis as it should be.
The amplifier has auto turn-on so a sense board is used to detect the signal from the XLR connectors to the input of the Hypex NC122MP which is a combination stereo amplifier and switching power supply. Paint/anodization has been removed from most of the chassis to allow for better heat transfer. Many holes are drilled which increase the surface area of the case to allow better convection cooling.
Output wires are tidy and go the shortest distance to the speaker terminal and kept away from each other, aiding in its great crosstalk measurments. Likely that custom board helps with that as well.
Cable for the front panel clipping and power on indicator has been nicely tie wrapped to the case rather than using stick on clamps which come unglued easily.
Everything within the control of the builder has been done to create a nice and clean amplifier around that Hypex module from safety and performance point of view.
Conclusions
It is easy to dismiss the roll of companies building amplifiers around these hypex modules. Yet we usually see a lot of missteps which potentially make the devices less safe and performant. The opposite is the case here. Clearly the designer paid attention to everything including adding custom modules/features to make the device more than just the bare amplifier. This is a model of how it should be done.
-----------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
