Self Medicating > General DIY

Pizza Box v2.0 Class D amp project

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HAL:
The two channel Pizza Box amp v2.0 has input and output wiring completed.  Just need to wire it to the SMPS.

Pizza Box Amp +/-36V@16.7A SMPS are ready for wiring to the amp modules.  Using 14awg stranded Belden 1309 cables for the DC power.

Will add a capacitor bank to the amp module pizza box to lower the impedance at the amp end and help filter any SMPS noise further.

HAL:
Decided to go to monoblocks with external SMPS, so they are now completed.

Next is testing with an 8 Ohm dummy load to verify correct operation. 

Nick B:

--- Quote from: HAL on May 25, 2023, 08:10:48 PM ---Decided to go to monoblocks with external SMPS, so they are now completed.

Next is testing with an 8 Ohm dummy load to verify correct operation.

--- End quote ---

Rich,

I think I like the look of your speakers recently a bit better 😊 But, an A+ for creativity
On Leos small monos that you own, did you try different power cords or there wouldn’t be much of a difference?

Nick

HAL:
Nick,
Not tried the Orchard Audio Starkrimson monoblocks with new GaN power supplies with the stock power cords. 

I use them with Triode Wire Labs power cables Pete made for my setup many years ago as that is what I have in the system with the PI Audio Group BlunderBUSS and UberBUSS.  Bringing the UberBUSS and TWL power cables to LSAF.  An easy test to do at the show. 

The TWL power cables are more flexible than the stock AC power cords, so that helps with my setup.

HAL:
Back from LSAF2023 and now for some more fun with Pizza Box Amp v2.1.

These are the fanless SMPS for +/-36V at 1kW DC output.  Should do well up to 500W without a heatsink or chassis mounting for trials.

They have adjustable output voltage, so will be making sure both sides are as equal as possible.

Next to wire them up for testing with a resistor load check. 

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