what's your thought of using almumium PCB in audio amp?

[siliconray]

We've made a lot of PCB for all kinds of power applications: LED, DCDC, Motor driver. The benefit of using aluminum PCB is that it can also be used as heatsink. What's your thought of using it in audio power amp?

in my opinion, since aluminum has big distributive capacitance it's not good for small signal. but for power side it's not a problem. It can even be used as chassis.

[ashok]

How will you solder a lot of small parts on it ? Can an average DIY guy do it ? I doubt it . I think in most cases the heat condution is not of any use for most applications. Track resistance could also be an issue ?
Fine for power LED and similar uses.

[RJM1]

Metal Core Printed Circuit Boards
http://hkpca2.intimexptx.com/ptxcms/...b5f1c08633.pdf

But it would probably be cheaper and just as effective to use a 2oz or 3oz copper clad board with thicker traces for audio because your output transistors will still need a heat sink.
2) Heat sinks are cheaper than metal core printed circuit boards

[siliconray]

Small parts can be soldered by iron, just set higher temperature. Track resistance is not a problem since the design can be the same as FR-4 core. in production price is not high at all, but for prototyping it's another story. My main concern is conductive capacitance. Anyway I think it's worth trying, probably try with a JLH 15W amp