Last February, I had these boards running but then found that the case was too narrow to fit them (the Aliexpress/Ebay Weilang Audio case from a few pages back) and never found a home for them. It's a sad sad story
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That is a really excellent job for a test bed.
Here is mine. Bloody pathetic in comparison. Hahaha
One day I will have to do something similar. What I have does the job well enough.
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Dual Hybrid Mono-blocks?
Hi I have an idea for my 2 largely identical first watt chassis one of which has an F6 the other an M2 located within. I am planning to swap over the right hand boards and heatsinks and place TPST switches on the power supply of each board and heatsink combo for both amps, a total of four switches.
This should allow me to run two mono F6s (or M2s) each with their own power supply and audio circuits and for easy comparison if I wish to do so. Will this work? I can't see why not. I plan to locate the switches on the top plate near the front keeping wiring short and simple and an easier job cutting out on the top plates.
Thanks in advance
Hi I have an idea for my 2 largely identical first watt chassis one of which has an F6 the other an M2 located within. I am planning to swap over the right hand boards and heatsinks and place TPST switches on the power supply of each board and heatsink combo for both amps, a total of four switches.
This should allow me to run two mono F6s (or M2s) each with their own power supply and audio circuits and for easy comparison if I wish to do so. Will this work? I can't see why not. I plan to locate the switches on the top plate near the front keeping wiring short and simple and an easier job cutting out on the top plates.
Thanks in advance
I did it and posted about it at the below link. Works great!I turned my two stereo amps into mono-blocks for 10 dollars
Burned FET at Q4
Hello All,
I have been busy the last week building the First Watt F6.
As this is my first DIY amplifier I learned a lot during the build, and I am very grateful to the diyaudio who gave me advise. With their help I was not able to end up where I am now, enjoying my first diy amplifier (better than any commercial I have heard before!).
When I was building the PSU I made a mistake by cutting the legs of the diodes, but with the advise of @extreme_boky I was able to fix this issue, just by soldering a new leg to the diodes.
After that the PSU was up and running, and I finally could test a channel. WOW..!! Amazing first notes coming out of my set up (Gustard X20 Pro -> First Watt F6 -> Gravesen 3 Way Classic Discovery). WOW..!! Amazing clean sound
At the same time when the first notes came out of this magic amplifier, there was smoke coming from one of the channels. First I thought it was the Jensen Transformer. When I looked closer I saw that it was the FET at Q4
I knew that it was damaged during the installation of the board (I hit it by accident), and when I looked closer after the smoke came out I saw that one of the legs was actually broken which caused a short.
For now my question is, how to proceed? Since this broken FET is one of a matched quad, should I buy a new matched quad or can I just replace this one by one new FET?
Please see the photos attached for your reading pleasure
Koos
Hello All,
I have been busy the last week building the First Watt F6.
As this is my first DIY amplifier I learned a lot during the build, and I am very grateful to the diyaudio who gave me advise. With their help I was not able to end up where I am now, enjoying my first diy amplifier (better than any commercial I have heard before!).
When I was building the PSU I made a mistake by cutting the legs of the diodes, but with the advise of @extreme_boky I was able to fix this issue, just by soldering a new leg to the diodes.
After that the PSU was up and running, and I finally could test a channel. WOW..!! Amazing first notes coming out of my set up (Gustard X20 Pro -> First Watt F6 -> Gravesen 3 Way Classic Discovery). WOW..!! Amazing clean sound
At the same time when the first notes came out of this magic amplifier, there was smoke coming from one of the channels. First I thought it was the Jensen Transformer. When I looked closer I saw that it was the FET at Q4
I knew that it was damaged during the installation of the board (I hit it by accident), and when I looked closer after the smoke came out I saw that one of the legs was actually broken which caused a short.
For now my question is, how to proceed? Since this broken FET is one of a matched quad, should I buy a new matched quad or can I just replace this one by one new FET?
Please see the photos attached for your reading pleasure
Koos
Attachments
Thanks for quick reply!
So, just to confirm, I will only replace the 2 FET’s at Q4?
Koos
Copy that. Thanks for the clarification.
I will order a matched pair of LSJ74B.I added some photos of the build so far.
Koos
