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Hi all

I am doing a limited run of PCbs for some of my projects. If you are interested, please have a look here:
http://groupdiy.com/index.php?topic=62900.0

Gren Mic Pre
S800 EQ
Green PSU
5003 EQ
Nite EQ

They will only be available for a month.

Regards, Peter

Hi all I have the EQ article and did a proto a few years ago, sounded very nice, typically 70s, fat, big sound. I only have part 5 (Nov 71), does anyone have the others on a dusty shelf? I'm guessing Aug 71 til Jan/Feb 72. The series was written by Peter Levesley and it might make a nice pre-amp/EQ ...

There is a good thread about the Apex here:

http://studioforums.com/eve/forums/a/tp ... 2111089522

Peter

There is a great thread here on how to modify the Apex 460 style of mic:

http://studioforums.com/eve/forums/a/tp ... 2111089522

Peter

Andrew707 Did you try Symetrix for a replacement pot? www.symetrix.com There is a manual here: http://support.symetrixaudio.com/cgi-bin/symetrix.cfg/php/enduser/std_adp.php?p_faqid=330&p_sid=wwnm-iKi&p_accessibility=0&p_redirect=&p_pv=1.16&p_cv=2.163&p_prods=16&p_cats=1,163&p_sp=cF9zZWFyY2hfdGV4dD01...

That is a helluva job....

Might be worth finding a digital interface & then building/buying a classy A-D toob converter.

Peter

Small Bear Electronics have these:

http://www.smallbearelec.com/Detail.bok?no=116

Then select 10k from the drop box.

They should give the right taper.

Peter

There were some comments here:

http://www.prodigy-pro.com/forum/viewto ... 3bfea088b9

Not much else to add tho'

Peter

Could the 16-4-2 be the same design?

http://fa.utfs.org/diy/

Peter

Thanks for the post

Peter

Robert

Any chance you could load this onto Photobucket? The Rapidshare free download limit has been reached.

Thanks
Peter

Do you have a higher res scheme of the balancing circuit..? Right click on the drawing & either "View" or "Save" I love the 3D rendering, what programme do you use for it? I use Traxmaker for PCB design, tried to do Kicad which has a render engine built into it but could not get it running properly...

I dont have a schem for a 2 dual LED but here is one you could adapt from 4 LED's down to 2. http://1176neve.tripod.com/id12.html I also have a balancing amp schem http://1176neve.tripod.com/id6.html If I can offer some advice for a PCB layout, it is to have the switches & pots mounted directly to t...

Try Omeg for smaller quantities of pots www.omeg.co.uk Their min quantity is 25 & they are very reasonably priced. ( about $1-00 each for std items) I have used them quite often, they are plastic conductive units & work very well. & you can order nice extras like PCB brackets for a small fee. Centre...

Tubes? Does it hum with a shorted plug plugged into the input? Take out the toobs & turn the amp on. Is there any hum in the speaker? This means that the output transformer is picking up mains from the power transformer via the chassis. I use plumbers washers about 3 or 4 mm thick to lift the output...