post your leach amp photos

[destroyer X]

Difficult to see, in my country, professional assembling

So good as you do... everyone of you are really very good.

The worst one is magnificent in assembly.

Congratulations you all.

Carlos

 

[BrianGT]

I did a redesign of the leach amp board a while back, integrating the output device wiring into the pcb.

I got sidetracked and never got the production boards made. I had considered remaking the board a bit smaller, and adding extra spacing to use Black Gate capacitors.

Layout pictures:
http://www.briangt.com/gallery/leachamppcb

--
Brian

 

[kilowattski]

Brian,

Where do you get your boards made? Are they very expensive?

 

[BrianGT]

Brian,

Where do you get your boards made? Are they very expensive?

They were free, from the school. I had a pair made when I was doing my undergrad. But I graduated in December, so no more free boards. They were made on a milling machine.

They aren't very good boards, but proved that it worked.

--
Brian

 

[Damon Hill]

A reminder for me to finish stuffing that board this
weekend and get it checked out. Just lacks the
input transistors and zeners.

 

[djss]

Here's the one I have working.

 

[djss]

And here are the output transistors of the one I'm in the middle of building.

 

[TonyTecson]

here are rectifier choices for my leach amp....

 

[TonyTecson]

and here is the traffo i plan to use....

 

[TonyTecson]

here it is again....

 

[ekaerin]

Piece of art

Blessgin,
I just love your design using an old tuning cap. Looks like a piece of
art.
/ Regards / Mattias

 

[rasmus]

Lesch super amp

hi fellow crazy men

Some pics off this crazy project the dubble barrel leach amp mesured to 2 x 290 w 8 ohm 1000hz all the components are mached ... alot of work but i think its worth it
sounds werry nice comperd to thinngs lice zindac 200w clase A and otther, and it have unlimeted power hehe I runn the amp on a diy la pass balanced pre amp it seems to like the pre amp werry well!!

an ewery thing is made in the garade ewen the pcb`s
an the chasiss are cut with a ordenary electric wood saw.

we aculy made 2 amps me and a frinde a werry nic project
I hop the pics can be interesting to see

best regards Rasmus

 

[taj]

Nice work Rasmus.

I love the heatsinks. Dangerous looking. Be very careful not to drop it, you will cut your foot into 8 slices.

Do you have any photos showing the inside layout?

..Todd

 

[rasmus]

Lesch super amp innside I

The thing is weing well over 30 kg .. the xformer is monted in the box in the back 1200va and a total of 12000uf x 8 = 96000uf and loded with ca 80 v it is alot of energy and the potensial for ball lightning is quit pressent.( we trid a small on hehe)
because off all the caps are rated 200v so they are quit big and it is not rom for annything more inside the box caps were surplus

each chanel/heatsink are fixt to the amp with thred rods so it is easy to flip down a channel if it neds service..

It was my/ouer first DIY amp, I wil not advice to doo this as the first diy amp, we were lucky to have a frind that helpt us a bit with audio aspect of this ( I am treeind in electronics)

I just ask hehe who need 300w in the living rom a awarage wife can manage ca 7-8 watt
(sorry for the english ..... I try my best

regards Rasmus happy Christmas

 

[rasmus]

Lesch super amp innside II

innside II

 

[rasmus]

Lesch super amp innside III

innside III

 

[cyril_hk]

my leach low tim

Pic of my Leach low TIM, inside overall...

 

[cyril_hk]

my leach low tim

closer...

 

[cyril_hk]

my leach low tim

and the main pcb.