5 channel power amp:
- Thread starter hydrovac
- Start date
How hot are the heatsinks ? The components of the adjacent PCB may be facing heat….
Neat wiring.
rwnano
Active Member
Toroidal transformer vs. regular cuboidal transformer?
Also how do I learn to design amplifiers?
Also how do I learn to design amplifiers?
flat_listener
Active Member
How about using a laptop cooling pad like this one... maybe you need to place it upside down..
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Maybe the next design you can try is to place the Transformer in the center...Amp boards at the sides with heat sinks facing the amp sides....amp sides to have blow out low quiet fans for cooling. Most professional amps used for outdoors have heatsinks embedded to the amp chasis so that it cools faster.....
The layout options were limited as i wanted to use this pre-punched and pre made Sherbourn PT-7020A chassis.
I chose a layout that keeps the modules away from the toroid and rectifier, minimize the length of signal carrying wires and keeps the internals as neat as possible and take care of serviceability as well... wiring and cable neatness has always been something I appreciated and valued as an amp builder. I wanted to take the time to make it clean and tidy.
I think this layout keeps all signal and power wiring as far apart as possible, although it may not appear to look at it, there were many nights deliberating on this layout.
For the grounding scheme, I used a single "star" which grounds to chassis... but in a way, it was all good because it forced me to look closely at what I was doing and be sure that I understood the process.
I guess the question I have is if these seems like a decent way to approach this or if I've really gone off the ranch. It definitely seems more unconventional but I think if I route the AC wires on one side and the signal on the other side, it might turn out OK!
Tested fired successfully... end result, a clean sounding and *dead silent* amp...
I appreciate your advice/comments/feedback on the build and I look forward to the next ones (bigger for sure).
...
reubensm
Well-Known Member
what a rhino of an amp, very nice build 
srinisundar
Well-Known Member
Wow, Great build and congrats , happy that final result is dead silent and clean sounding amp..
what a rhino of an amp, very nice build
Good job( work
Thanks... well, the final challenge... yet to undergo field test.
...
Eagerly awaiting the results.
Finally get to try field test... took out the 2 channel amps cleaned the rack, wiring tidied up:
Amps retired from service....
Input, output and power connected:
Sitting pretty... 5 channel amp has all the room for itself in the rack.
Lights off... show time:
…
Amps retired from service....
Input, output and power connected:
Sitting pretty... 5 channel amp has all the room for itself in the rack.
Lights off... show time:
…
flat_listener
Active Member
Thanks Mahi!Beautiful setup Krishna garu
Thanks, the sonic quality is excellent with ample head room... even after playing a full movie at my reference level, i could still place my palm on the amp, barely hot... as a precautionary measure i have this laptop cooler as stand by.
That is a power supply reservoir for the ceiling lighting (fades off in 3 to 4 sec)... the amp schematics/circuit by Aniket Sharma (DD) and PCB layout implementation by Rahul (Indian Xtreme Audio)
...
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