News: Trouble logging in? Log in from the login page.
July 25, 2017, 06:47:20 pm

Recent Posts

Pages: [1] 2 3 ... 10
1
Crack / Re: Speedball upgrade, 14 & 15T Cap blown?
« Last post by Caucasian Blackplate on Today at 01:47:34 pm »
I'd replace the 100uf caps and leave a little lead length. I suspect you are grounding out one LED to the metal body of the cap.
2
Crack / Re: Speedball upgrade, 14 & 15T Cap blown?
« Last post by cabcabaret on Today at 12:08:30 pm »
Sure, although the B+ cable broke when I lifted it of the standoffs.

The big board is sitting right on top of the caps, as I can't bend them any lower as they are.



3
Crack / Re: Speedball upgrade, 14 & 15T Cap blown?
« Last post by Caucasian Blackplate on Today at 11:54:23 am »
That LED on the big board shouldn't be lit up with no 6080 in the socket. Can you post a photo of the soldering on the bottom side of the big board?
4
Crack / Re: Speedball upgrade, 14 & 15T Cap blown?
« Last post by cabcabaret on Today at 11:51:36 am »
Here are the readings on the front board without the 6080 attached.

0A = 70 V
1A = 225 V
B-A/B = 0 V
1B = 225 V
0B = 70 V


Attached is a pic of the LEDs which are on if that's relevant.

How does it look?

5
Stereomour II / Re: New StereomourII
« Last post by Caucasian Blackplate on Today at 11:34:36 am »
Download a 60Hz tone onto your Mac and play it through your DAC, then measure the AC voltage at the RCA outputs on the DAC.
6
Stereomour II / Re: New StereomourII
« Last post by butchbass on Today at 11:16:08 am »
I am experiencing this with all of my sources, digital and vinyl. My phono preamp is a small Audio Technica, I don't listen to vinyl much. With my Foreplay/Paramour setup I can drive the output into clipping. I have a Schiit Bifrost Multibit and Amarra with a Mac Mini.  The only control I have that I know of is in the Amarra software and it is all the way up. Any suggestions?
7
Thanks, PB.

More or less what I expected, but I had to check anyway.

Thanks much,

Jim
8
Crack / Re: Speedball upgrade, 14 & 15T Cap blown?
« Last post by Caucasian Blackplate on Today at 10:39:45 am »
The resistor doesn't technically need to be replaced.

Try turning the amp on with just the 12AU7 installed and no 6080, then measure the voltages on the board up front.

-PB
9
Stereomour II / Re: New StereomourII
« Last post by Caucasian Blackplate on Today at 10:37:58 am »
Your DAC should be able to push the Stereomour into clipping.  Is this something you experience with all your sources, or perhaps just more with your vinyl rig?  If you are experiencing this with your digital rig, be sure all your level settings are all the way up if you're using the USB interface.

I would not mess with the 33K resistors.  Adjusting that resistor will make the balance control quite a bit clumsier to use.  The Morquiet does also have some insertion loss as well.

Generally speaking, we see these kinds of issues when folks have a 5mV cartridge and a Seduction/Reduction (especially when the phono preamp doesn't have the applicable C4S upgrade), but very rarely with a digital source.

-PB
10
You would really need to use it with very power hungry headphones for this to make any sense.  If you plugged in Grados, I would expect the combination to be annoyingly sensitive.
Pages: [1] 2 3 ... 10