Gallery, Projects and General > Gallery
A little Audio project I have virtually completed
Brass_Machine:
Stunning looking amp Tim. :bow: Glad it sounds good too. :thumbup: I need to get off my arse and build one. :poke:
Eric
spuddevans:
Thanks Eric :thumbup: The big grin on my face was just as big as when I 1st got either of my engines running for the 1st time.
I gotta do a little mod to my mill in order to drill the pattern of cooling holes in the lid. So once I get that done then it'll be full steam ahead on the lid and then onto the next project :proj:
Tim
spuddevans:
Just had an extended listening session this afternoon, the sound continues to improve little by little as the new tweeter beds in and also as my new amp gets run in.
Something I have noticed is that the 2 LM4780 amp modules are running hotter than I am happy with, so I am going to add some extra heatsinking to what's there. So I'll be taking it back out to the 'shop to add the heatsink.
Tim
spuddevans:
So after deciding that the original heatsinks were too puny, I have since replaced them with 2 somewhat more beefy ones.
As far as I remember when I got this heatsink (I cut it in half to make 2 smaller heatsinks for this amp) it was rated at 1.2CW (I dunno if cutting it in half results in 2 2.4CW heatsinks or if there is any other factors involved), hopefully this will run a little cooler. It was a beast to mount though, very hard to get a little screwdriver in to tighten the mounting screws.
I also have been working on the lid, here's my progress;
and a backlit version
As you can see some of the holes have not gone all the way through, but a little work with a file on the underneath will sort that out. ( the problem is that the metal deformed slightly and the drill didnt punch all the way through, just left a dimple on the underneath. a few swipes with a file should clear that away and reveal the holes )
The holes are 1.7mm diameter, and there are about 1700 of them :jaw:
Tim
Imagineering:
--- Quote from: spuddevans on April 14, 2011, 06:33:40 AM ---
The holes are 1.7mm diameter, and there are about 1700 of them :jaw:
Tim
--- End quote ---
Good that the CNC Conversion worked then, isn't it.
Murray.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version