Pictures of your diy Pass amplifier

[acamilicko]

I am officialy fan of jdg123's constructions! This is D.I.Y. definition!

 

[xrk971]

Is this the smallest B1?

B1 preamp in stereo on a 4 cm x 6 cm veroboard. I am using as volume control on my Juma headamp. Sounds great - very clear and does not add anything to the sound.

 

[kpsthakur]

Sent from my iPhone using Tapatalk Pro

 

[kpsthakur]

Sent from my iPhone using Tapatalk Pro

 

[kpsthakur]

Recycling Cable STB for my B1 Pre Buffer


Sent from my iPhone using Tapatalk Pro

 

[Dennis Hui]

F4

I built an F4 into the case of my original version Zen early this year. I hope to use this more when I get a new preamp.

 

[alibear]

Dennis, can you tell me how many watts per side are you dissipating in heat, and the rise above ambient.
thanks
Alan

 

[Dennis Hui]

Hi Alan, I'm running around 60W per side. I did not measure the temperature rise before putting the amp away, but I'm guessing less than 30C. The room was at 20C and the heatsinks felt comfortably warm.

 

[alibear]

Thank you Dennis
Alan

 

[R-K Rønningstad]

Yea, like the title says...don't you all listen in an almost dark room?

Fantastic design off-Broadway! I came to think about "The Iron Giant"!

 

[Tripmaster]

Nice. I must see if I can source some of those heatsinks

Sent from my SM-G935F using Tapatalk

 

[alibear]

Tripmaster, you have PM.
Alan

 

[Jazz36]

Hi all!
this is my handmade Aleph 5
thanks Nelson

 

[Zen Mod]

tell us more about speakers

 

[WalterW]

very nice looking amp!

 

[Jazz36]

It's my variation on OBL-15 by Troels Gravesen OBL-15
woofer speaker and mid-range speaker old one USSR made, mid-range speaker modified,
tweeter Dayton Audio AMT 3-4

 

[flyingsolo]

Drew a small PCB to implement PSU schematic circled in red...compatible for both connection cases...

 

[flyingsolo]

Drew a PSU board to house 12*D30mm caps per board or 8*D35mm caps per board...

 

[AndrewT]

for the 240Vac option you need the two existing Thermistors in series.
You can do this with a simple double pole switch.

 

[6L6]

No, you don't. The 240V version uses a single CL-60, as shown in the schematic and as properly made on his PCB.