Purifi The (4ch) Build

To build 4ch unit with a customised case from Modushop.

Using two base plates meant for the shorter version of the case, but at 16cm depth fit the psu and amp/buffers nicely. PSU is a Hypex SMPS 3KA400.
Base plates just slide in
Front LED cables bought with the Neurochrome buffer PCB except used the unused middle wire to extend the other two. Also used 2 pin socket and plugs to make maintenance a little easier.

Lights are on!

Decided to go for v2 of the Neurochrome start-up board. Changes include much reduced size due to the microcontroller, no fuse (IEC has two) & controllable brightness for the LED’s in the front panel switch. Will be turning it on/off with the 12v trigger from the AVR.

Lights are on. Cables braided. Heat shrink is shrunk. Just need to get the lid on.

Wires everywhere whilst running in. Dimmed the four channel lights – a little too much. Needs fixing.

All done.

Application Note: The PSU used here is a Hypex SMPS3kA400 2 x 65 VDC 3000 Watt Switch Mode Power Supply, which does not feature the 2-quadrant operation that others in the range do. Half bridge modules like the Eigentakt module that are providing frequency range below 100Hz need a workaround of reversing phase for half of the modules. (i.e. swapping the input +/- of the input buffer and then swapping the speaker output on two of the modules – not shown in the above images)