sound is very clear and detailed and flat like most of apex amplis(i was making sr200 ax11 ax14 last year)
I've completed my AX6 build using the 2N3055h, and it works, whether it works properly is up for debate, but I was chuffed to bits (in English that translates to "very pleased ") to hear result of my efforts. All the more pleasing as it was through the bookshelf speakers I cobbled together.
Next up is the FH9 and I also want to try the FX8.
I wanted to try one of the pcb fab houses that seems to sponsor almost every YouTube video I watch. So for $2 or £1.60 I had 10 boards made for the AX11. These are double sided boards using Thiagomogi's layout and as I only need one set, if anyone would like a set give me a shout and I will give you my details so you can send me a self addressed envelope.
Quick question on components, the AX11 needs a 300pf cap, could I have substituted a 330pf which is a more common value?
Cheers,
Graham
Next up is the FH9 and I also want to try the FX8.
I wanted to try one of the pcb fab houses that seems to sponsor almost every YouTube video I watch. So for $2 or £1.60 I had 10 boards made for the AX11. These are double sided boards using Thiagomogi's layout and as I only need one set, if anyone would like a set give me a shout and I will give you my details so you can send me a self addressed envelope.
Quick question on components, the AX11 needs a 300pf cap, could I have substituted a 330pf which is a more common value?
Cheers,
Graham
I've completed my AX6 build using the 2N3055h, and it works, whether it works properly is up for debate, but I was chuffed to bits (in English that translates to "very pleased ") to hear result of my efforts. All the more pleasing as it was through the bookshelf speakers I cobbled together.
Next up is the FH9 and I also want to try the FX8.
I wanted to try one of the pcb fab houses that seems to sponsor almost every YouTube video I watch. So for $2 or £1.60 I had 10 boards made for the AX11. These are double sided boards using Thiagomogi's layout and as I only need one set, if anyone would like a set give me a shout and I will give you my details so you can send me a self addressed envelope.
Quick question on components, the AX11 needs a 300pf cap, could I have substituted a 330pf which is a more common value?
Cheers,
Graham
Next up is the FH9 and I also want to try the FX8.
I wanted to try one of the pcb fab houses that seems to sponsor almost every YouTube video I watch. So for $2 or £1.60 I had 10 boards made for the AX11. These are double sided boards using Thiagomogi's layout and as I only need one set, if anyone would like a set give me a shout and I will give you my details so you can send me a self addressed envelope.
Quick question on components, the AX11 needs a 300pf cap, could I have substituted a 330pf which is a more common value?
Cheers,
Graham
hello thimios,
i didnt think anyone has posted pcb. can you post your pcb files?
or schema actually used?
regards
Prasi
i didnt think anyone has posted pcb. can you post your pcb files?
or schema actually used?
regards
Prasi
The pcb isn't mine and it is from a post here i think.
I wiil try to find this soon.
Like Thimios, I too heard a hum from this circuit. I'm not sure if using a separate AC transformer for the circuit would eliminate it. I Am attaching a Sprint file that has a few different layouts.
Thanks thimios and Terry,
I think the hum could be due to insertion of mosfet Rds between PGND and SPEAKER -.
I hope Mr. Mile can suggest improvements to remove the hum
, otherwise SSR protect is a very useful for any amp from long term protection point of view.
meanwhile I just cobbled together a layout to use a double banana binding post.
regards
Prasi
I think the hum could be due to insertion of mosfet Rds between PGND and SPEAKER -.
I hope Mr. Mile can suggest improvements to remove the hum
, otherwise SSR protect is a very useful for any amp from long term protection point of view.meanwhile I just cobbled together a layout to use a double banana binding post.
regards
Prasi
Attachments
Thanks thimios and Terry,
I think the hum could be due to insertion of mosfet Rds between PGND and SPEAKER -.
I hope Mr. Mile can suggest improvements to remove the hum
meanwhile I just cobbled together a layout to use a double banana binding post.
regards
Prasi
No, the hum is because of no optoisolator use.
Hi Thimios,
Have you found a work-around for this? It is a cool little circuit if it can be fixed.
