New TK2050 board

[vmed_cha_gr]

no you will have to put your ear 10cm close to the speakers to hear it. no worries, it will never be noticed.

Originally Posted by bull041161

Do the meanwell power supplies hum aswell . Is the huming through the speakers as i would not beable to live with it if i heard a hum on quiet bits in the music

[reg66]

for my T2, i bought the connexelectronic 38V smps300r from hifimediy. it's a bit more than the meanwell, but it's small to put in tight fitting case and runs real cool. ZERO hum even with just rough wiring (ie, no case etc, just a test setup). 28V costs the same as the 38V version. i'd recommend going for the max voltage suited to your board (around 34-35V, which the 38V one can be adjusted to).

just my opinion, i'd say you get what you pay for, you won't need to add any caps or worry about signal noise. worth paying the extra compared to the ebay one.

Power supplies

[alkasar]

Originally Posted by reg66

for my T2, i bought the connexelectronic 38V smps300r from hifimediy. it's a bit more than the meanwell, but it's small to put in tight fitting case and runs real cool. ZERO hum even with just rough wiring (ie, no case etc, just a test setup). 28V costs the same as the 38V version. i'd recommend going for the max voltage suited to your board (around 34-35V, which the 38V one can be adjusted to).

just my opinion, i'd say you get what you pay for, you won't need to add any caps or worry about signal noise. worth paying the extra compared to the ebay one.

Power supplies

+1

[boone]

+2

T2 Special + connexelectronics power supply - very compact!

[nwboater]

Totally cool looking! What is that great case?

Rod

[boone]

Rod,

Amp and power supply cased in a hot plate/toaster oven manufactured around 1937. It was called a caulkins breakfaster. Cast aluminum required a lot of elbow grease to make it look good.

boone

[mickeymoose]

Wicked! E

[vmed_cha_gr]

Originally Posted by boone

Rod,

Amp and power supply cased in a hot plate/toaster oven manufactured around 1937. It was called a caulkins breakfaster. Cast aluminum required a lot of elbow grease to make it look good.

boone

This is one of the best I've ever seen !!!!!

[Puffin]

Originally Posted by boone

+2

T2 Special + connexelectronics power supply - very compact!

I want one!

[whelibob]

Hey, is there any chance I could save my Hifimediy AMT 2050 V1.2?

I desoldered R1 and R3 inpu tresistors(?) to increase the gain. Yes, I should have read hifimediys post which told me to change R2 and R3 and not touch R1 at all. The problem is now that the thin connection under the surface of the PCB going from R3 towards TC2000 is cut and with my solder skills i am not able to solder it back on. The original value of all R1, R2, R3 and R5 are 22k ohm and I liked the gain value when my resistors values were R1 22k, R2 56k, R3 56k, R5 22k.
If i remember correct those resistor pairs(R1,R3 and R2,R5) were in parallel/series. So my question is is it possible to let R3 be unconnected and change R1 to a value that matches with R2 being 56k and R5 22k?

Another question, does it damage the amplifier when my R3 was unconnected and the amp was on. The channel voltage showed 29.4V :/

This was another lesson for me not do things in a hurry. Always something goes wrong.