markhellewell
It lives!
I somehow managed to switched the DC socket polarity when routing, so initially got some scary smoke and the 10Ω resistors got really really hot really really fast (glad I used 1/2 watt!). Anyway, fixed that then tested the source voltage on the MOSFETs…setting the bias using the trimmpots to half the MOSFET sink voltage. Voltage offset of the audio outputs measured within range, so I hooked up my Sennheiser HD550s and had a listen. Even with the shitty caps I used for this prototype the sound is amazing!
Can't wait to make a couple of small mods to the PCB layout and stick my good caps in :)
It lives!
I somehow managed to switched the DC socket polarity when routing, so initially got some scary smoke and the 10Ω resistors got really really hot really really fast (glad I used 1/2 watt!). Anyway, fixed that then tested the source voltage on the MOSFETs…setting the bias using the trimmpots to half the MOSFET sink voltage. Voltage offset of the audio outputs measured within range, so I hooked up my Sennheiser HD550s and had a listen. Even with the shitty caps I used for this prototype the sound is amazing!
Can't wait to make a couple of small mods to the PCB layout and stick my good caps in :)