Maybe I am a 'cranky old bugger' but I prefer the monolithic layout without the snapoff. I want the higher current out afforded by the extra output devices. In the case where I don't need the higher current I would simply fall back to previously posted layouts. Losing the snapoff reduces the board width by a half inch. To that end, I would be interested in doing a separate board spin of the monolithic layout.
Is anyone else interested? Would you be supportive of that Jens?
Is anyone else interested? Would you be supportive of that Jens?
Luke,
The board is not done yet, and thus BOM and schematics are not released.
Search the www for the original Leach amp.... there is lots to read.
\\\Jens
The board is not done yet, and thus BOM and schematics are not released.
Search the www for the original Leach amp.... there is lots to read.
\\\Jens
Advanced Circuits first time buy
Since my motto has been "dare to be stupid" I will give Advance Circuits the first time shot. I am on the West coast of the US so shipping to me should be reasonable. When Jens completes the circuit if you experienced guys don't mind giving me the necessary guidance.
Bill
Since my motto has been "dare to be stupid" I will give Advance Circuits the first time shot. I am on the West coast of the US so shipping to me should be reasonable. When Jens completes the circuit if you experienced guys don't mind giving me the necessary guidance.
Bill
Bill,
Bravo...😀...dare to be stupid...I love it.
I think you will find that any issues brought up by Adv. Circ. will be ably handled with assistance by Jens 😎
...and any "extra" parts should be sent to Bill...gotta "wish list"? whadaya need?
Bravo...😀...dare to be stupid...I love it.
I think you will find that any issues brought up by Adv. Circ. will be ably handled with assistance by Jens 😎
...and any "extra" parts should be sent to Bill...gotta "wish list"? whadaya need?
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OK,
The PS cap size is "hanging out there". Jens has requested discussion of this without result. So, Jens please state the allowable diameter and terminal spacing provided on the current rendering. 😉
We will consider the allowable on-board capacitance from that...and further the discussion. I believe off-board capacitance remains an option for those so inclined...not a big issue.
Bring your questions/concerns guys! 🙄 We're gonna roll this baby out! 😎
The PS cap size is "hanging out there". Jens has requested discussion of this without result. So, Jens please state the allowable diameter and terminal spacing provided on the current rendering. 😉
We will consider the allowable on-board capacitance from that...and further the discussion. I believe off-board capacitance remains an option for those so inclined...not a big issue.
Bring your questions/concerns guys! 🙄 We're gonna roll this baby out! 😎
Hi,
Regarding on board capacitors, I have made room for 2 x 35 mm diameter and 10mm pitch making it possible to go for 6800µF 100V types from e.g. Panasonic: ECOS2AP682EA
If this is ok, Tad has already go the gerbers to generate boards....
\\\Jens
Regarding on board capacitors, I have made room for 2 x 35 mm diameter and 10mm pitch making it possible to go for 6800µF 100V types from e.g. Panasonic: ECOS2AP682EA
If this is ok, Tad has already go the gerbers to generate boards....
\\\Jens
Be sure to add your request to the wiki page.
http://www.diyaudio.com/wiki/Leach_amp_clone_Plus_extension_board_Group_Buy
Bill
http://www.diyaudio.com/wiki/Leach_amp_clone_Plus_extension_board_Group_Buy
Bill
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Wiki link to GB says it is CLOSED ???
I am unable to sign, this link to Wiki says the status is closed 🙁 Am I doing something wrong...I would like to sign for a set.
I am unable to sign, this link to Wiki says the status is closed 🙁 Am I doing something wrong...I would like to sign for a set.
2 Leach boards for sale
Hi,
Is anyone interested in my old Leach boards? I'm not using this amp anymore and I have the boards left.
I bought them 2 years ago directly from Leach. The boards are with all components installed except the output coil/resistor and the output transistors that I don't sell. See the pictures for details. I sell them as is. The last time I was using this amp (1 year ago) everything was normal, so they should be in good working condition.
Components: transistors MPS 8099/8599, drivers MJF 15030G/15031G, Nichicon caps, the rest you can see. I buy parts only from Digi-key and Newark, so I guess all is original.
Asking price: 30$ + shipping. I am in Vancouver, Canada so I'll send them by Canada Post to Canada or USA (about 10$). For the rest of the world it will be much more. I have a PayPal account for the payment.
Send me a message if you're interested.
Hi,
Is anyone interested in my old Leach boards? I'm not using this amp anymore and I have the boards left.
I bought them 2 years ago directly from Leach. The boards are with all components installed except the output coil/resistor and the output transistors that I don't sell. See the pictures for details. I sell them as is. The last time I was using this amp (1 year ago) everything was normal, so they should be in good working condition.
Components: transistors MPS 8099/8599, drivers MJF 15030G/15031G, Nichicon caps, the rest you can see. I buy parts only from Digi-key and Newark, so I guess all is original.
Asking price: 30$ + shipping. I am in Vancouver, Canada so I'll send them by Canada Post to Canada or USA (about 10$). For the rest of the world it will be much more. I have a PayPal account for the payment.
Send me a message if you're interested.
Attachments
Group buy organizer, please step forward. Noone is taking care of the wiki. I could do this only if the responsible communicate. tryonziess, are you running the show?
Active devices
Jens,
Which active devices are being used in your version of the Leach Amp?
The original components stated by Leach or did you use other more common (european) devices?
best regards,
Piersma
Jens,
Which active devices are being used in your version of the Leach Amp?
The original components stated by Leach or did you use other more common (european) devices?
best regards,
Piersma
I used new(er) devices... people are free to try what they like.....
An externally hosted image should be here but it was not working when we last tested it.
\\\Jens
Shall we consider this group buy on hold? Noone has stepped forward as organizer nor have the wiki page been edited to reflect the offer. 
If there is sufficient interest I would step forward to lead a group buy. However I would want to do a group buy on the original board that did not have the 'break-off section' for half of the output devices (assuming Jens is interested). Any thoughts? Should I do it?
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