X/JPS64/Jhofland,
Will there be a possibility of not using the DC protect your team is implementing on the board if we have DC protect boards ourselves? I.E., can the end user bypass the DC protect circuit without hacking the board?
Will your DC protect circuit be tested with the current amplifier circuit, to make sure that THD remains very low at all output levels up to clipping? Is the DC protect circuit composed of a relay with two contact sets in parallel - one optimized for low voltage, the other for high current or you guys going to use MOSFETs instead? It appears MOSFET from reading post#26.
Sorry for so many questions, but most DC protect circuits on the market are low quality, and low reliability. There is no use implementing a DC protect circuit if it is 1) Unreliable over the life of an amplifier and 2) if it appreciably increases THD which can happen if it is not biased in a way that minimizes the variation in switch resistance throughout the signal swing.
Best,
Anand.
Will there be a possibility of not using the DC protect your team is implementing on the board if we have DC protect boards ourselves? I.E., can the end user bypass the DC protect circuit without hacking the board?
Will your DC protect circuit be tested with the current amplifier circuit, to make sure that THD remains very low at all output levels up to clipping? Is the DC protect circuit composed of a relay with two contact sets in parallel - one optimized for low voltage, the other for high current or you guys going to use MOSFETs instead? It appears MOSFET from reading post#26.
Sorry for so many questions, but most DC protect circuits on the market are low quality, and low reliability. There is no use implementing a DC protect circuit if it is 1) Unreliable over the life of an amplifier and 2) if it appreciably increases THD which can happen if it is not biased in a way that minimizes the variation in switch resistance throughout the signal swing.
Best,
Anand.
Last edited:
Another two please!
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Two for me please.
Thanks to everyone for all their tremendous work.
Barry
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Two for me please.
Thanks to everyone for all their tremendous work.
Barry
This design is turning out to be very universal and all encompassing to say the least.
Exactly.
The team has been working continuously to cover most of the requirements that come up when building a DIY project.
Will this ABBB be able to run 4 ohms?
Yes, but may take some tweaks to the resistor setpoints and Hugh will have to answer that. It may require more bias current, but will end up with more power.
GB List:
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
GB List:
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
Hey, this is a terrific amount of interest in this amp! I am running behind schedule and need to proto the SSR speaker pro circuit and then give final schematics for JP and away we go with the verification PCBs. I always do verification PCBs first to make sure the boards from our GBs are functional and easy and enjoyable to build. It takes time though so thanks for your patience.
pblossom- 2 boardsGB List:
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
GB List
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
Total - 38 boards
gary s - 2 boards
jwjarch - 2 boards
Vince - 2 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
Total - 38 boards
GB List
gary s - 2 boards
jwjarch - 2 boards
Vunce - 4 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
Total - 40 boards
gary s - 2 boards
jwjarch - 2 boards
Vunce - 4 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
Total - 40 boards
GB List
gary s - 2 boards
jwjarch - 2 boards
Vunce - 4 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
woodlands - 2 boards
Total - 42 boards.
gary s - 2 boards
jwjarch - 2 boards
Vunce - 4 boards
meanie - 2 boards
shattered_dream - 2 boards
yoaudio - 2 boards
md_Stryker - 2 boards
Roundtoit - 2 boards
sst4270 - 2 boards
chilly - 2 boards
Kokanee - 2 boards
evanc - 2 boards
a3cervo - 2 boards
markus22ch - 2 boards
barryblue - 2 boards
Andrewbee - 2 boards
Arthur - 2 boards
JRKO - 2 boards
pblossom- 2 boards
woodlands - 2 boards
Total - 42 boards.
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