Recent Posts

1

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by Paul Birkeland on Today at 04:45:40 AM »

  None of the four LEDs on the Speedball's small board light up

If you turn the lights off in your room, can you see them lighting up now?

2

Mainline / Re: Almost there - KREG Voltage issues.

« Last post by Paul Birkeland on Today at 04:44:28 AM »

What are your OB voltages on your outer high current C4S boards?  I suspect those LEDs are dim because your 6C45 tubes aren't conducting sufficiently.  Did you notice the instruction to fold over and solder together one pair of legs on each of the blue bias trim pots?

3

Kaiju Stereo 300B amp / Re: Kaiju - IEC Socket Replacement

« Last post by Paul Birkeland on Today at 04:42:47 AM »

This is the one you want:
https://www.mouser.com/ProductDetail/Schurter/62004330?qs=/ha2pyFaduhs8Cstgzf3Vo3858E7rB1/gOYA8A39S6Q%3D
It's possible we accidentally sent you the one that works on the thinner panels.  If the one you have looks exactly like the picture in this link, you just have to be sure to really press it down till all the clips click on the back side of the panel, then it will stay put.

4

Crack / Re: Low noise + wrong voltages

« Last post by Paul Birkeland on Today at 04:41:06 AM »

Could you post a picture of the bottom of your front C4S board?

5

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by agitprop on Yesterday at 09:41:39 AM »

Thank you!

6

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by Doc B. on Yesterday at 09:15:53 AM »

Sounds like your amp has the right voltages so you should be good to go. The big board LEDs are about the same brightness as the 12AU7 socket LEDs. The small board LEDS are much dimmer because they pass less current. You may want to darken the room to observe them.

7

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by agitprop on Yesterday at 09:04:11 AM »

Do these LEDs require the amp to be pushing audio to light up to a brightness where they can be seen in normal lighting?

8

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by Thermioniclife on Yesterday at 08:41:43 AM »

I stand corrected sir.

9

Crack / Re: Speedball: LEDs on first board not lighting; voltage tests are within spec

« Last post by agitprop on Yesterday at 08:38:55 AM »

Hmmm.  Here is the cover photo of the Speedball manual, which shows the orientation of the transistors matching mine:

10

Sublime Subwoofer Amplifier kit / Re: Shielded twisted pair cable

« Last post by Doc B. on Yesterday at 08:14:15 AM »

Try a wire stripper setting for 12ga wire to strip the outer jacket.