Your layout is very symmetrical. but the power inlet is right next to the input of one board and the output of the other. I tried to keep the ac away from the audio part of the amp.The heat sinks seem to be crowded against the back wall too. What VA are your transformers that would have a bearing on the 20 g. switch harness.
In my build, I kept the ac as far from the boards as possible and it is very quiet. But it is your amp and please do as you see fit.
In my build, I kept the ac as far from the boards as possible and it is very quiet. But it is your amp and please do as you see fit.
SL, Vunce & X,
All good suggestions gentlemen. I have only so much real estate to play with. Also do not forget, this is a temporary home for the Xmas Amp.
SL, appreciate the fact about the AC being close to the amp boards. I was hoping that the AC mains/ emi filter combined with a short 6"-8" twisted wire running to the soft start board should be OK. Also the transformers are Antek AS2225, 200VA with 25V secondaries. Also I have vent holes drilled underneath the HS's.
Vunce, If I put the HS's on the side of the enclosure either at the front or the back, like in your diagram, it can be done with tight spacing. See the 4 pics attached depending on changing position of transformers & HS's.
The only other way to free up space is to get rid of the side panels and bolt the HS's to the base of the enclosure (ie: HS on outside of base), but then I have no place for the rca inputs and the speaker binding posts due to no side panels.
** X, you can chime in with what you think about the possible AC interference in my original layout and whether it is something to be concerned about.
*** If I make a change: Tranformers at the back or Transformers at the front. I think Transformers at front due to rca & speaker binding posts at backs.
All good suggestions gentlemen. I have only so much real estate to play with. Also do not forget, this is a temporary home for the Xmas Amp.
SL, appreciate the fact about the AC being close to the amp boards. I was hoping that the AC mains/ emi filter combined with a short 6"-8" twisted wire running to the soft start board should be OK. Also the transformers are Antek AS2225, 200VA with 25V secondaries. Also I have vent holes drilled underneath the HS's.
Vunce, If I put the HS's on the side of the enclosure either at the front or the back, like in your diagram, it can be done with tight spacing. See the 4 pics attached depending on changing position of transformers & HS's.
The only other way to free up space is to get rid of the side panels and bolt the HS's to the base of the enclosure (ie: HS on outside of base), but then I have no place for the rca inputs and the speaker binding posts due to no side panels.
** X, you can chime in with what you think about the possible AC interference in my original layout and whether it is something to be concerned about.
*** If I make a change: Tranformers at the back or Transformers at the front. I think Transformers at front due to rca & speaker binding posts at backs.
zek, great minds think alike. To try and gain space I have completely redesigned the layout and have the heat sinks on the outside of the enclosure. Spent the day drilling new holes and lining things up. This leaves me with only the back panel with the input jacks, speaker posts and the SSR speaker protection. Will post a pic soon. Parts came in for the FH9, so working on both.
This is the layout I would prefer to move forward with as it gives me the most space, keeps the AC in one area and the amp boards as far away as possible. Star hub (dirty) ground will be between the soft start and the transformers.
Can the purple electrostatic shield wire's from the AS2225 transformer's be coupled together and then connect to the dirty star hub ground or should they be kept separate. ?
Can the purple electrostatic shield wire's from the AS2225 transformer's be coupled together and then connect to the dirty star hub ground or should they be kept separate. ?
Have found some time to work on the " dirty ground" star hub for the Xmas amp build. Basically the 2 transformer shield wires, the 2 PE from the All Cees psu, the 2 glb on the amp boards, and the ground from the IEC mains module, are all connected to a ground on the chassis. Please see attached image.
I have not grounded the heat sinks "Is it necessary" ?
I have not grounded the heat sinks "Is it necessary" ?