TillM

Re: Sound Skulptor: 500 series Tape Simulator , Professionnal Audio Kits
« Reply #280 on: January 28, 2017, 08:45:48 PM »
Hey,
Short question.
Do I really need the Nylon washers for the Carnhill VTB9045, cause when i place the nylon washers between the transformer pcb the screws are too short, without the washers the pcb attach perfectly.
Hope somebody can help me


JPK

Re: Sound Skulptor: 500 series Tape Simulator , Professionnal Audio Kits
« Reply #281 on: January 30, 2017, 02:36:51 AM »
The washers only have a mechanical purpose. Because the transformer surface is slightly recessed, the washers are leveling it with the metal envelope. There is no electrical need for them. If the screws are too short, you may just leave the washers out.

brndvnrdn

Hi JPK,

Built a MP573 yesterday. Very nice, sounds very good.

When powering off the unit, there is a pop at the output. Is this to be expected? Or is this an error?

Thank you.

TillM

short answer, yes.
My two MP573 have the same pop, they work since months without any issue.

brndvnrdn

short answer, yes.
My two MP573 have the same pop, they work since months without any issue.

Okay, good to hear.

wave

Re: Sound Skulptor: 500 series Tape Simulator , Professionnal Audio Kits
« Reply #285 on: September 02, 2017, 10:06:07 AM »
Hi JP,
I'm having an issue with an MP573. I can't get the bias to change. I'm only getting .015V at TP4.
I'm only getting 1.08V on the Q4 side of R42.
I have swapped out Q6 and there's no change

Any ideas?


I had the red and green output transformer wires crossed! Ooops!
Working perfectly!

Thanks
Dave
« Last Edit: September 02, 2017, 12:11:08 PM by wave »

micaddict

Re: Sound Skulptor: 500 series Tape Simulator , Professionnal Audio Kits
« Reply #286 on: September 03, 2017, 04:05:55 AM »
Quote
I had the red and green output transformer wires crossed! Ooops!
Better not mix those colors up when you're nearing a traffic light.   :o

 ;)


Quote
Working perfectly!
:)

JPK

LA502 New optical compressor available!

Look in the first thread.

Spiritworks

Awesome. Two of these, along with two of the tape simulators, are on my wish list. I am loving all of my Sound Skulptor products

Tschem

Looks awesome!
What transformers are you using in the TS500 and the LA502 ?


JPK

Carnhill/OEP transformers.

Fantastic!

Tell me, when it comes to these kind of optos that's used here (can be seen at step 11 in the assembly guide http://www.soundskulptor.com/docs/la502-assembly-guide-01.pdf ), is there any need for a matched pair when you want to have a stereo pair?

JPK

The opto-couplers we use are fairly consistent and there is no need for matching as long as you stay with moderate compression levels .