Melcors and JLM pre pcb's

oops i forgot to log in.

Yes, you can use any opamp that is pincompatible with 990/2520

The JLM board is very frugal with space. The JFET-992 just fits in there and it is 1x1 inch wide. What are the dimensions of the Melcor board?

note sure yet coz i haven't got the boards. if they're too big for the jlm i might just wire them up on veroboard or something.

They are supposed to be 1.1" by 1.1"
My good board measures 1.201 x 1.184
the V groove process in bad at outer
mechnical dimensions.
sand the boards a little and you may get it to 1.1" both sides.

The melcor at 1.1" square should fit perfectly. The JLM99*MB can take our JLM99V which is 30mm (1.2") long. Also the JFET992 from Fred is not actually 1" square but 1.1" x 1.1" just like the JH990, MM99 & Melcor. The PCB was designed to leave 1.2" x 1.2" space in theory if all the transformer manufacture drawing are correct size. The tightest fit will be when using a Lundahl 1538 as it sits over closer to the first 99* opamp but it should still fit fine.

Please feel free to send any email with any comments and or circuit ideas for the JLM99*MB to [email protected].

Thanks
Joe

Hi Joe,

It's all good

My 1731's when sanded down to the border measure 28 x 28,5 mm

Peter