Lets have it the Class A way

[Thad E Ginathom]

I Won't hate to hear the ones which run directly on 220v. but i am guessing they'll be pretty loud.

as far as the cpu fans go, cooler master has the quietest fan's around. they are outstandingly silent. come's at a cost though.

Gosh, are you planning to use a 220v fan? I have no experience of those.

After a lot of messing with fans for my PC, my vote goes to Noctua, but they are both expensive and hard to get. Flipkart stocked them for a while. I couldn't even get them in Singapore.

Fans are best sucking out rather than blowing in --- so you have to arrange the airflow where you want it.

 

[pranavkumar]

Gosh, are you planning to use a 220v fan? I have no experience of those.

After a lot of messing with fans for my PC, my vote goes to Noctua, but they are both expensive and hard to get. Flipkart stocked them for a while. I couldn't even get them in Singapore.

Fans are best sucking out rather than blowing in --- so you have to arrange the airflow where you want it.

Noctua looks sweet ! well no wonder they aren't easily available.
yup, sucking out is what it'll do.

infact you do get 220v fans with similar geometry. they have bigger motors, so they tend to reduce the fin lengths.

 

[diesel engine]

Nice build buddy, I think you should've used a bit more bigger heatsink, I think. BTW, where did you source the alluminium plates used in the front and rear panels?

Nearing completion now. Badges ready.
biasing done. a few bolts to go and everythings done

Have a look:

How is this like ? am i doing justice with the chassis and all ?

 

[pranavkumar]

Nice build buddy, I think you should've used a bit more bigger heatsink, I think. BTW, where did you source the alluminium plates used in the front and rear panels?

Thanks
yes, i guess we'll add a fan in the summers, on the heatsinks.
the aluminium plates can be easily sourced here in delhi at a place called Ajmeri Gate. Its a hardware mkt. heatsinks and everything is available here.

 

[diesel engine]

Noctua looks sweet ! well no wonder they aren't easily available.
yup, sucking out is what it'll do.

infact you do get 220v fans with similar geometry. they have bigger motors, so they tend to reduce the fin lengths.

will this be useful?

 

[pranavkumar]

will this be useful?

well i already have DC (+24/0/-24) for the amp, no need for another bridge.
For the 120mm fan that i put, i used a 7812 regulator. since it draws only 160mA, the sink on the IC doesnt need to be big.
it worked perfectly without inducing any noise into the amp circuitry.

Thanks for the share

 

[faizal]

great,liked it,keep going with new projects

 

[zapps]

Pranav, would you be kind enough to make a list of materials, how much did the electrical materials cost?

It is an awesome project though, the front panel looks great

 

[pranavkumar]

Howdi everyone

with the indian summers around the corner, i thought it would be a good idea to replace the heatsinks on this F5 (As pointed out earlier).

With the new sinks in place, i was able to bias it ~80% of the full bias (0.6V). The sinks still touch 50 deg Celsius easily after running for 1.5 hours, but with the larger heat capacity of the heatsink, i am not worried as much as i was earlier.

Here are a few pictures.

Cheers

 

[gobble]

Good stuff. How is the sound?

Is that a copper less matrix board you are using? I am looking for some. What brand is it? Does it come in custom sizes or do we need to cut them ourself?
Is it FR2 material?

Thanks
G0bble

 

[pranavkumar]

I am not sure what you mean by a copper less matrix board. Can you please explain a little ?

The sound is phenomenal. I like the signature of this amp.

 

[gobble]

Copper less means without copper. There are prototyping matrix boards with copper traces on one side and there are those without copper on any side.

I am so sorry to confuse you like this. I hope it doesnt take away the pleasure of listening to your DIY gear.

G0bble

 

[pranavkumar]

Haha.. Not at all. Just trying to know what you meant by it.
If its the circuit board that you mean. It is a general purpose bread board which I used.
Did I get it right ?
As far as the size is concerned .. It comes in standard sizes. Not sure of the exact dimensions though.

 

[linuxguru]

Here are a few pictures.

Nice build. I would suggest manually wet-sanding the aluminium face-plate with 400 grit emory paper, followed by a final mirror-finishing with a small amount of soap, water and 400 or 1000-grit emory paper.

Dry it with a clean paper or cloth towel, allow to dry further for another 30 - 60 minutes, and if you're satisfied with the finish, use acrylic clearcoat spray paint from an aerosol rattle can to permanently seal the finish. One coat should be sufficient, but you can use a second coat if the first coat looks too thin.

 

[gobble]

Haha.. Not at all. Just trying to know what you meant by it.
If its the circuit board that you mean. It is a general purpose bread board which I used.
Did I get it right ?
As far as the size is concerned .. It comes in standard sizes. Not sure of the exact dimensions though.

No you didnt. But its ok, I am making that long scheduled visit to the electronics market soon and I will double check there.

G0bble

 

[omishra]

No you didnt. But its ok, I am making that long scheduled visit to the electronics market soon and I will double check there.

G0bble

The General pcb with dot pattern comes with 2"X3", 3"X4", 4"X8" and 6"X8".

 

[gobble]

The General pcb with dot pattern comes with 2"X3", 3"X4", 4"X8" and 6"X8".

Thanks. The last time I asked around S.P road, I only got ones with copper traces on one side which I don't want. I am heading to SP road either this weekend or next, so will hunt a bit more this time around. The problem is if you ask for matrix board or strip board or Veroboard you only get ones with copper traces mostly and even on the web there is confusion with products advertised as without Cu but the specs listing an amount of copper used.

G0bble

 

[grubyhalo]

Nice build! Love the hand finished look...

 

[pranavkumar]

I am able to get the copper dot general purpose PCB here in Delhi, very easily.
I am sure you would find something that would serve your needs there in Bangalore.

Cheers!

 

[AVM]

Congrats Pranav on the effort.