Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« on: November 16, 2015, 09:34:22 PM »
As you can tell, I'm very curious about Scott Hampton's DIY-friendly designs - they seem like an inexpensive way to inject useful colors into my setup.  In the July/August 2002 issue of Tape Op, he outlined a solder jockey-friendly tube pre that, as he noted at the time, could produce two channels for ~$400 (though I'm sure inflation factors in here). Has anyone built the project? Is it roughly as easy as the FETBoy appears to be? Is it worth building? While the FETBoy seems to have many happy builders and some documentation floating around, this tube precursor seems to have gotten the short shrift.


ruffrecords

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #1 on: November 17, 2015, 06:04:29 AM »
Any chance of posting a schematic?

Cheers

Ian


insideout

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #3 on: November 17, 2015, 02:33:19 PM »
there was a whole pile of supplementary information on his site about it too, no longer there. But I could have it and could zip it all up and put it somewhere.

Here is my build
http://thecomplexengine.com/2014/09/07/hamptone-tube-mic-pre/

- Mike

My3gger

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #4 on: November 18, 2015, 04:38:11 PM »
Here is amp schematic (think it was always 12AY7 input). Front end is typical 20dB pad and phantom. Psu HT has cap multiplier with FET and zeners, then there is FET into LM317 with some protection generating 50V for series heaters and phantom.
I would separate this part, not sure if it can make quiet preamp.
Built it with E182CC output and later changed for one revision of RCA BC-3C's mic amp. Can't really say now which was better because transformers were not the same and i wasn't experienced yet. RCA sounds very good for sure, Hamptone was simple build and quiet with different psu/separated heater winding.
« Last Edit: November 18, 2015, 05:14:19 PM by My3gger »

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #5 on: December 01, 2015, 02:28:22 AM »
insideout: If you can find the info, I'd love to see/have access to it.

ruffrecords


insideout

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #7 on: December 12, 2015, 05:36:56 PM »
insideout: If you can find the info, I'd love to see/have access to it.

Hi,  Scott has asked that it not be revived, so to speak.

Biasrocks

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #8 on: December 28, 2015, 12:09:06 PM »
Hi,  Scott has asked that it not be revived, so to speak.

Strange since it was published in Tapeop.

http://tapeop.com/tutorials/30/build-tube-mic-pre/

I've purchased the back issue and here's the pdf.

Replace .jpg with .pdf

Mark
« Last Edit: December 28, 2015, 12:47:22 PM by Biasrocks »
http://SharktankPro.com

"I'd rather use an SPX90 than a UA plugin....." Joe Barresi

okgb

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #9 on: July 12, 2017, 07:23:40 PM »
Thanks, he says it was copied from another design , nothing new in the design world !
GKB Audio / Greg Boboski


BluegrassDan

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #10 on: July 17, 2017, 10:16:28 AM »
Thanks, he says it was copied from another design , nothing new in the design world !

Any idea which design is being copied?

Michael Tibes

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #11 on: July 17, 2017, 12:51:22 PM »
I believe he mentions it himself towards the end of article, doesn't he? I forgot what it was, nothing I've come across so far.

Michael

BluegrassDan

Re: Scott Hampton's 2002 Tape Op Tube Pre: Anyone built it?
« Reply #12 on: July 17, 2017, 05:12:45 PM »
The tube preamps I have been building for myself are based on the Hampton article, but I've also made several changes to it as well. Different PSU regulators, added low shelf, PIO caps, etc. Always wondered what it's based on. The Jensen schematics share some similarities.