RE: Legacy Record Preamp Photos

Posted by coffee-phil (A) on July 4, 2010 at 09:05:42

In Reply to: Legacy Record Preamp Photos posted by coffee-phil on July 4, 2010 at 00:44:16:

Oops, I failed to explain the origin of this preamp.

It started several years ago as a breadboard summing amplifier to place in front of my normal stereo preamp to play vertically encoded Edison diamond discs. The experiment worked well. In the vertical mode I could play Diamond discs and in the vertical mode I could play 78s and other mono records. Of course you can play laterally encoded monos through your stereo preamp but summing the channels gets rid of the vertical component.

As I got more into this old record thing I decided that I wanted a choice of most of the eqs that one would encounter. I then completed the design and packaged the circuit into something which I would be willing to place on my stereo shelf.

The case is a wooden box which I found at Michael's crafts and liked.

At this time the schematics are not in a concise form. After I get that taken care of I will get it copyrighted (advise of the intellectual property guy at work) and post it in the event anyone wants to build a copy of this thing for personal use. Naturally if someone would want to build and sell these things I would like a piece of the action.

I have been talking to a circuit card designer about doing a board layout.
If there is sufficient interest and it looks like I can at least break even I may offer boards for sale.

Phil

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Follow Ups Full Thread

Topic - Legacy Record Preamp Photos - coffee-phil 00:44:16 07/4/10 (21)

How did you do the lettering? ...... NT - Ewalaa 03:55:12 07/5/10 (2)

RE: How did you do the lettering? ...... NT - coffee-phil 10:44:19 07/5/10 (1)

RE: How did you do the lettering? ...... NT - Ewalaa 13:42:33 07/5/10 (0)

RE: clever architecture... - user510 13:42:51 07/4/10 (0)

it looks like an advertisement to me - hifitommy 09:16:59 07/4/10 (6)

RE: it looks like an advertisement to me - Dman 14:19:02 07/4/10 (2)

RE: it looks like an advertisement to me - coffee-phil 10:51:10 07/5/10 (1)

RE: it looks like an advertisement to me - Dman 15:23:38 07/5/10 (0)

RE: it looks like an advertisement to me - coffee-phil 09:40:10 07/4/10 (2)

it STILL looks like an advertisement to me - hifitommy 10:05:35 07/4/10 (1)

RE: it STILL looks like an advertisement to me - Lew 14:05:22 07/9/10 (0)

i never said DEALER - hifitommy 18:38:59 07/9/10 (0)

RE:Lighten up, Francis - amioutaline? 12:35:03 07/4/10 (0)

RE: Legacy Record Preamp Photos - cactuscowboy@bresnan.net 09:06:42 07/4/10 (1)

RE: Legacy Record Preamp Photos - coffee-phil 10:13:25 07/5/10 (0)

RE: Legacy Record Preamp Photos - coffee-phil 07/4/1009:05:42 07/4/10 (3)

RE: Legacy Record Preamp Photos - Dman 14:15:53 07/4/10 (0)

So at this point it IS a DIY - Muzikmike 09:38:35 07/4/10 (1)

RE: So at this point it IS a DIY - coffee-phil 11:01:34 07/5/10 (0)

Pardon my stupidity, - Muzikmike 07:22:13 07/4/10 (3)

RE: Pardon my stupidity, - coffee-phil 13:51:49 07/5/10 (0)

I'm with stupid - www.records 07:57:26 07/4/10 (0)

I am stupid also. - tsasseen 07:54:55 07/4/10 (0)

Follow Ups

RE: Legacy Record Preamp Photos - coffee-phil 07/4/1009:05:42 07/4/10 (3)

RE: Legacy Record Preamp Photos - Dman 14:15:53 07/4/10 (0)

So at this point it IS a DIY - Muzikmike 09:38:35 07/4/10 (1)

RE: So at this point it IS a DIY - coffee-phil 11:01:34 07/5/10 (0)

RE: Legacy Record Preamp Photos

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