Hello Donovas
You can get a set of THP, gold plated boards here
100WX2 Ovation NX Current Feedback Amplifier PCB Set New Version 2 0 | eBay
Much cheaper than trying to make your own and they are very high Quality.
You can get a set of THP, gold plated boards here
100WX2 Ovation NX Current Feedback Amplifier PCB Set New Version 2 0 | eBay
Much cheaper than trying to make your own and they are very high Quality.
Why would you waste your time.. The price is low,for the PCB's.. Maybe I'm missing a joke, or something..
Hi,
Testing the power supply..
1) SSLR is not engaging
2) I have +50V on Collectors of Q6 and Q7
3) I have 0V on pin 1 and 3 - J10
4) 0.7V on Q3 Gate - this is wrong
I short the drain of Q3 to 0V, and SSLR engages..
I'll keep looking, any suggestion will be appreciated.. going to look at U1 next
Testing the power supply..
1) SSLR is not engaging
2) I have +50V on Collectors of Q6 and Q7
3) I have 0V on pin 1 and 3 - J10
4) 0.7V on Q3 Gate - this is wrong
I short the drain of Q3 to 0V, and SSLR engages..
I'll keep looking, any suggestion will be appreciated.. going to look at U1 next
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Joel,
See page 30 in the write up for the debugging processs.
Make sure R7 is 22k.
Is D17 the right way around?
Step through that and if you still have problems lets us know.
See page 30 in the write up for the debugging processs.
Make sure R7 is 22k.
Is D17 the right way around?
Step through that and if you still have problems lets us know.
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Thanks Bonsai, for fast reply..
I'm going through page 30..
I just found something.. No Continuity, between U1 and R3,R10
The PCB is missing the hole, to the trace, on top side..
I'll fix this and continue update..
Cheers.
I'm going through page 30..
I just found something.. No Continuity, between U1 and R3,R10
The PCB is missing the hole, to the trace, on top side..
I'll fix this and continue update..
Cheers.
I just noticed that on the circuit diagram in the nx-Amplifier write-up, I have Q9 and Q10 shown with the old, incorrect parts.
The correct partsc are
Q9 = BC546B
Q11 = BC556B
The BOM is CORRECT.
I have updated the circuit to reflect the correct values.
The correct partsc are
Q9 = BC546B
Q11 = BC556B
The BOM is CORRECT.
I have updated the circuit to reflect the correct values.
Joel,
I will need to take a look at the PCB Gerbers - have you resolved your problem yet?
Bonsai, sorry, my mistake the hole is there, it is filled in with the finish coating.. The Board is fine..
Turns out, U2 is wrong.. Examined the Case Markings and my Archived Bom and found a mistake.. I have to order U2 again..
I Have correct Q9 and 11.. Thanks!
Note: PS circuit Diagram, shows R6 as 330K.. BOM is 100K for R6..
I used 100K..
U2 arrived.. Digikey is fast..😉
Power supply checks are finished, and everything works as is should..
Moving on, to testing and setup.. Hope to listen to this amp soon..
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Hi Joel,
You will definitely love this amplifier, it is very high in my list of favorite amps.
Ciao!
Do
You will definitely love this amplifier, it is very high in my list of favorite amps.
Ciao!
Do
Bonsai,
Do you have some PCBs or gerber for just the speaker protection using SSLR? Something like the PSU from NX but just the speaker protection part?
I want to replace the ones in other projects that I already own for better ones. I have relays for speaker protection... With very high current they could stick and not even disconnect the load.
Thanks
Do
Do you have some PCBs or gerber for just the speaker protection using SSLR? Something like the PSU from NX but just the speaker protection part?
I want to replace the ones in other projects that I already own for better ones. I have relays for speaker protection... With very high current they could stick and not even disconnect the load.
Thanks
Do
Well... Let me put if this way... Bryston is a very good product but I never really liked their sound signature as I find it grainy and it is not something that appeal to me. It is a personal taste so please no hate comments.. 😀
That said, I definitely prefer the NX amplifier
Thanks
Do
That said, I definitely prefer the NX amplifier
Thanks
Do
Glad you feel this way, about NX.. I'm not a Bryston fan either... Owned many because of easy availability..