5-ch Leach amp done!

[Maxhawk]

Actually it's been done for many weeks. I just now got around to building a page and updating the pictures.

See the link for info.

5-ch Leach Amp

 

[Bill Fitzpatrick]

I would like to have seen it all but when a picture size gets to be 1.3Megs, I have to bail out.

 

[acenovelty]

Sweet.................

Prosit

 

[Nisbeth]

Impressive!


/U.

 

[highbias]

Nice chassis work! Did you do it yourself or have it done? I also like the on-off scheme that you used and I intend to use it on future projects of my own.

Where do you get those slick Buglin switches?

Mark

 

[Maxhawk]

I would like to have seen it all but when a picture size gets to be 1.3Megs, I have to bail out.

My apologies, it's easy to forget that some folks are still on dial-up.

I've updated the page with low-res versions as well.

 

[Maxhawk]

Nice chassis work! Did you do it yourself or have it done? I also like the on-off scheme that you used and I intend to use it on future projects of my own.

Where do you get those slick Buglin switches?

The chassis was built by Brian Bell, known as BrianGT on this forum. He cut the pieces on his table saw.

The Bulgin switch is from Mouser Electronics. I've updated my page with the Mouser part number, as well as a BOM for the circuit.

 

[BrianGT]

The chassis was built by Brian Bell, known as BrianGT on this forum. He cut the pieces on his table saw.

Yep, the Freud non-ferrous blade cuts aluminum quite well

I still have step-by-step chassis construction pictures on my website as well:
http://www.briangt.com/gallery/leachamp-5channel
I just noticed that I started putting up the pictures August 2003.

Great job on finishing the amp!

--
Brian

 

[acenovelty]

Yo BrianGT,
What method are you using to tap all those screw holes?

Prosit

 

[Luke123]

Maxhawk

What a beautiful job!

Tell me...by viewing your FFT of THD, I have remarked that you have a smooth decreasing harmonic suite.
How did you do it?
Amazing!

Luke

 

[Maxhawk]

Tell me...by viewing your FFT of THD, I have remarked that you have a smooth decreasing harmonic suite.
How did you do it?
Amazing!

I can't take credit for it since it's not "my" design. I would expect this type of performance from any amplifier claiming to be linear .


-Rob

 

[Luke123]

Maxhawk

Gee you have the harmonic "correctness" of tubes and the low THD "numbers" of transistors!
Never saw this before. At any prices.
Keep that amp! It's a beauty!
Marshall Leach...I understand...

Luke

 

[Jean]

Nice to see that chassis put to a good use Very good job !

 

[moe29]

Very nice work! You can be proud of your new amp

Good job on the web page too.

 

[jleaman]

Congrat's Good looking amp.. i really like the turn on and turn off switch and circuit for that.. Now i need 2 one for each mono block of my aleph 2's..

 

[bowdown]

Congrats that amp looks really really good.I love the on/off circuit for the bulgin switch, im using the same switch and was wandering if u have any schematics or any gerber/pcb files for that circuit as i have been having problems with my flip/flop circuit.Turns itself on sometimes.... Really sux..

Regards

Bowdown

 

[Maxhawk]

Bowdown: Yes I've got schematics and gerber files, but they're on my PC at work. You'll need to wait until Monday. If you don't hear from me by Wednesday or so, ping me to remind me.

I used a debounce IC from Maxim and a 74F113 J-K flip flop.

 

[bowdown]

oh wicked max thank you very much for that. I will be looking forward to your post/email.Its wierd my amp just turns on by itself......I live alone and when i go to work in the morning i make sure its off then at nite i come home and its on again and warm which means its been on for a few hours!!!Doesnt do it everyday though but also does it some nites!! Hmmmm hope i can figure out whats going on....
Well thanx again have a great weekend..

regards

Bowdown

 

[mltaunt]

Great job! Did you make an shop drawings that you could post?

 

[Maxhawk]

Great job! Did you make an shop drawings that you could post?

That would be a question for Brian since he cut all the aluminum.

-Rob