Mxl v67 capacitor swaps

[docmattic]

looking at swapping out capacitor parts on my v67. at the moment im sourcing parts but haivng trouble.

i looked up an old post and got this:

1) 1000pF polystyrene capacitor
1) .47nF Metal Film, metalized Polyester, or good film capacitor.

are their any other caps i can replace to make my mic sound better? or are these two the only onces that will make a difference?

and are the two following caps i have found correct?
1) EXFS polystyrene capacitor,1000pF 63Vdc
2) Capacitor, Metallized Polypropylene, Axial, C0G, Axial, 5%, 100V, 470pF

thanks

 

[docmattic]

 

[crazydoc]

Personally, I can't tell you much about capacitor swaps. I can't hear much difference. However, here are some informative articles I've found interesting, and the schematic for the V67 (which I can't vouch for as being correct).

http://waltjung.org/PDFs/Picking_Capacitors_1.pdf
http://waltjung.org/PDFs/Picking_Capacitors_2.pdf

http://www.sdiy.org/oid/mics/MXL-V67.gif

I would change the capacitors, if any, direcly in the signal path. This would be C2 1000pF, which you note in your post. This is probably the most important, as it is in the high impedance (low current) portion of the circuit, where any aberration in a component would be most influential on the resultant signal characteristics.

C6 is listed as 0.047 - microfarads (uF) I presume. This is not 0.47nF nor 470pF. So I don't know where you got this value. Maybe the schematic is wrong? If you have a different one, please post.

The other cap to consider upgrading would be C8, a 4.7uF electrolytic.

Here are some more links to V67 mods:

http://www.prodigy-pro.com/forum/viewtopic.php?t=3165
http://www.prodigy-pro.com/forum/viewtopic.php?t=217