[silent:arts]
Well-known member
8) 8) 8)
you are in contact with Gustav?
I can't home etche ...
you are in contact with Gustav?
I can't home etche ...
audiox said:Component layout drawings & copper layer pdf for home etchers published. See the first post in this thread.
[silent:arts] said:you are in contact with Gustav? I can't home etche ...
pm me your email address and I will mail you the outline of Jeffs MicPre in dxf format for comparison.audiox said:Gerber files are ready, but I hope that someone checks the mechanical dimensions first. Most likely they are OK, but better to ensure before manufacturing the boards. Maybe someone involved in the 51X rack project could do that. I think dxf file would be the easiest way...
[silent:arts] said:I will mail you the outline of Jeffs MicPre in dxf format for comparison.
Good. I hope all was correct for you.audiox said:Thanks. Your dwg file opened perfectly...
Gustav said:Is there a gerber?
I do gold fingers on my mic preamp cards, on the bottom side only. Peter Purpose brought up a good idea in his 1084 thread. Only plate the actual used contacts. This will give you 9 for your eq and 10 for a preamp requiring 48V. It's not a huge saving but it all adds up! 8)audiox said:Gerber files e-mailed to Gustav.
What has been the practice with the card edge connector contacts on the PCB? Hard gold plating is quite expensive...
jsteiger said:I do gold fingers on my mic preamp cards ... Only plate the actual used contacts ...
One question before creating the Gerber files:
Which is the hole diameter that I should use for the discrete op-amps? The socket pin diameter varies from one manufacturer to another...
Baltimore said:I think selectable frequencies for the high and low bands would be a better addition than the mic pre. And would make the eq much more versatile.
mitsos said:I also think Baltimore's suggestion is much better than the preamp addition.. selectable frequencies are always good, if it's easy to do..
[silent:arts] said:any news on this ...
shot said:Silly question... I'm wondering why are potentiometers P2 and P3 (high and mid gain) double 10K lin? Why not a single 4K7 linear?
Hey Dustin..Check your PM........!regularjohn said:I just breadboarded this circuit to try it out and see how it sounds before I go through the process of making a pcb.
I've noticed that the level with the eq switched in and all three boost/cuts at 0 is several dB higher than with the eq bypassed. Has anyone else had this experience? Any suggestions for trimming down the level?
It's a great sounding eq otherwise!
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