1

XT500 Lunchbox connector extender / Re: Ribbon Cable Direction

« Last post by musicarr on April 28, 2025, 02:23:46 PM »

Cool. That works for me. Just wanted to be sure what I did was correct. Thanks for the confirmation.

2

XT500 Lunchbox connector extender / Re: Ribbon Cable Direction

« Last post by JPK on April 28, 2025, 08:27:25 AM »

Granted, I can flip the ribbon cable, but then the ribbon will be kind of going over the test pins.
This is what we do. The cable is correct, we purchase it pre-assembled. Going over the test pins is not a big problem.

3

XT500 Lunchbox connector extender / Ribbon Cable Direction

« Last post by musicarr on April 27, 2025, 11:10:47 PM »

Hi,

Getting ready to build my first Sound Skulptor units (MP573). In prep for that, I'm building the XT500. It looks like the ribbon cable has one "wire" at the top that is red. On the each of the two PCB's, there is a white dot. From what I can glean from the two images on the product page, the top, red "wire" on the cable should be oriented to the white dot's on the two PCB's. Is that correct? If so, and because the ribbon cable connectors can only go fit in one direction in the ribbon connector sockets, it looks like the cable that connects to the PCB that connects to the inside of the 500 series chassis is 180 degrees different than what's in the product images. See images. It'll be a little cumbersome to get it into the 500 chassis because of the cable direction/orientation of the ribbon connector, but if the "red line to white dot" orientation is the important part, then I guess that's the way it is. Granted, I can flip the ribbon cable, but then the ribbon will be kind of going over the test pins. Or... is the cable that was sent, manufactured 180 degrees the wrong way on one end? Just want to be sure before I use it for testing.







Thanks

4

True-Grit Tube saturator / Re: True grit / Relais RLY1

« Last post by JPK on April 27, 2025, 09:59:26 AM »

Oui, exact.

5

True-Grit Tube saturator / Re: True grit / Relais RLY1

« Last post by PMswing on April 26, 2025, 05:32:38 PM »

Le relais à 12 pattes mais seulement 10 à souder sur le pcb, je ne soude pas ces deux pattes et les laisse à l'air c'est bien ça ?  

6

True-Grit Tube saturator / Re: True grit / Relais RLY1

« Last post by PMswing on April 26, 2025, 05:27:15 PM »

Ok ! Merci !

7

True-Grit Tube saturator / Re: True grit / Relais RLY1

« Last post by JPK on April 26, 2025, 05:08:07 PM »

C'est le bon relais, vous pouvez souder !

8

True-Grit Tube saturator / True grit / Relais RLY1

« Last post by PMswing on April 26, 2025, 03:18:17 PM »

Bonjour,

je suis entrain d'assembler le true grit et je suis à l'étape 7 (relais RLY1). Dans la description du document "nomenclature", le relais est indiqué "Relay submin DPDT 24V" or dans mes composants il est marqué dessus :

Zettler AZ 850 24
24/30 VDC
0,5A/125VAC

Je voudrai juste une confirmation qu'il s'agit du bon composant avant de le souder !?

Merci,

Pierre

9

MU524 Vari-Mu Tube Compressor / Re: Tube ECC189 de remplacement

« Last post by JPK on April 24, 2025, 07:17:34 PM »

Ils n'indiquent pas la marque mais vous pouvez essayer.
Les réglages doivent permettre de s'adapter à la plupart des marques.

10

MU524 Vari-Mu Tube Compressor / Re: TR4 will only go down to 5V

« Last post by JPK on April 24, 2025, 07:13:37 PM »

You are on step 8, right?
What is the DC voltage on TP6 whenTR4 is all the way CCW.
Same question on U1 pin1 ?
Same question on U4 pin6 ?