Sound Skulptor forums

Build help and troubleshooting => MP599 Microphone preamplifier => Topic started by: ksjprod on June 24, 2021, 07:46:23 PM

Title: Jumpers
Post by: ksjprod on June 24, 2021, 07:46:23 PM

What are the two jumpers doing?  And what is the normal/standard setting?  Should they be inserted or left out?

Title: Re: Jumpers
Post by: JPK on June 25, 2021, 08:26:07 AM

What is your PCB revision number?
What is the name (JMPx) of the 2 jumpers you are asking about?

Title: Re: Jumpers
Post by: ksjprod on June 29, 2021, 11:30:55 PM

Board says Rev 1.6

JMP1 and JMP2 are the names.

Thanks,

Karl J

Title: Re: Jumpers
Post by: JPK on June 30, 2021, 10:46:07 AM

JMP1 is used during the test (step 1 and step 8) to check the pre without the DI plugin.
JMP2 is used during the test (step 6) to check the DOA.
https://www.soundskulptor.com/docs/mp599-test-guide-03.pdf

Title: Re: Jumpers
Post by: ksjprod on June 30, 2021, 05:56:28 PM

I followed the test set instructions.  I have JMP2 inserted and JMP1 not inserted.  I was asking because I read a review about the 599 having jumpers that alter the ratio of the input and output transformers:

https://gearspace.com/board/reviews/1007611-sound-skulptor-mp-5-99-a.html

But I don't see anything in any of the 599 docs that talk about the jumpers doing anything to the transformers.  That review is 5 years old, did a previous version of the 599 have jumpers for the transformers?

Thanks!

KJ 

Title: Re: Jumpers
Post by: JPK on July 05, 2021, 11:42:05 AM

Yes, the option was available in the previous version. It was removed in the current version because of little interest.