Recent Posts

1

Eros Phono / Loss of R channel post Sowter 1990 SUT

« Last post by Brooklynbottle on Today at 05:59:49 PM »

Not being one to leave well enough alone, I've managed to loose my R channel post SUT installation. I'm using the Sowter 1990 w/ a Hanah SL cart.
I double checked function w/ the original MM cart (which worked fine prior to my "improvement").
If I crank the volume on my amp, I get the expected hum in both channels.
No signal from the right channel of the phono w/ either cart.
Switched e86's, no dice.
I carefully followed the directions for Sowter installation as posted.
Left channel sounds great.
I'm in uncharted territory here as far as diagnostics go.
Any suggestions would be greatly appreciated!

2

General Discussion / Pipette and Subette demo June 15th

« Last post by Doc B. on Today at 01:59:55 PM »

Mark your calendar for our demo session with the Pipette and Subette speakers on Saturday June 15th at noon at our studio. I'll also have cool stuff for sale as I continue to reduce the accumulation of gear and software in preparation for our move at the end of summer.

3

BeePre / Re: Resistance Check on 52

« Last post by Emoreigns on Today at 07:38:28 AM »

Does this tell you anything Paul? These values seem to be correct, and double checking it looks like I've got all the resistors in the right spots. I just cant figure out why my resistance readings are so off...

4

Sublime Subwwofer Amplifier kit / Shielded twisted pair cable

« Last post by benzxc on Yesterday at 05:57:06 AM »

I was wondering where I can get some more of the shielded twisted pair cable (and the other solid core wires for that matter). I cut some the wrong length and did a poor job of stripping the outer jacket off the shielded one.

5

Eros Phono / Re: Eros 2

« Last post by Doc B. on Yesterday at 05:07:54 AM »

BeePre2 is about 11.5"Dx17.5"Wx9" H. Allow an inch or two clearance above that for air flow.

6

Crack / Re: Low noise + wrong voltages

« Last post by vermeil on May 13, 2024, 10:22:06 PM »

Here are the new voltages:

small board:
0A 71V
0B 206 V
1A 214 V
1B 214 V

7

Crack / Issues after volume mod

« Last post by loadexfa on May 13, 2024, 08:59:15 PM »

Here was my first attempt where I didn't understand where I was supposed to use the 33k resistors: https://forum.bottlehead.com/index.php?topic=15365.0

On my second attempt I used two 33K resistors. When I first tested, there was no sound in the right channel and the left channel would play music even when the pot was all the way down. I made sure this was the Crack by swapping the rca cables (still no sound in right) and testing the headphones with the same cable on another amp.

I went back and redid a couple of the solder joints to ensure everything was done correctly. When I tested after the attempted repair, there is still no sound in the right channel. Now there is a loud buzz in the left channel and the volume is very loud in the left channel when the pot is at the lowest setting.

Is it possible I damaged the pot? I triple checked the wiring and nothing should be loose or anything.

8

Eros Phono / Re: Eros 2

« Last post by benzxc on May 13, 2024, 08:37:27 PM »

Thanks! Can I also get the dimensions for the BeePre 2 as well? Especially the height with the stock tubes. I know 300Bs run quite hot so I need to make sure I have enough top ventilation.

9

BeePre / Re: Resistance Check on 52

« Last post by Emoreigns on May 13, 2024, 02:32:22 PM »

The 4-130’s are reading 117.2-117.8

B4 is 218 measured the same way

10

Crack / Re: Low noise + wrong voltages

« Last post by Paul Birkeland on May 12, 2024, 06:36:12 AM »

Can you unplug the 6080 and see if that changes the voltages coming out of the small board?