diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Solid State (http://www.diyaudio.com/forums/solid-state/)
-   -   How to house a JFET phono pre (http://www.diyaudio.com/forums/solid-state/82013-how-house-jfet-phono-pre.html)

jackinnj 23rd June 2006 07:33 PM

How to house a JFET phono pre
 
in addition to an HP461 I also purchased an HP465a -- this is a low noise pre dating from the 1960's -- i purchase these mainly for the chasis and the superb HP construction since i haven't purchased one yet which worked correctly -- but for $4.00 you can't beat it.

the first HP465 i purchased was turned into a low noise pre for measuring noise in regulators, diodes etc.

for those who have been following the various MC Phono Pre threads, or have seen Erno's designs on his website or in AudioXpress the HP465's offer a tantalizingly high power supply voltage to put into place those 2SK170/2SJ74 moving coil pre-preamps.

while the front panel in the pic below looks "rough" -- you can use a flexible mylar label and PowerPoint, Photoshop or MicroSoft Paint to make a front panel which will look like new -- here's the gestation of the idea.

http://www.tech-diy.com/Preamplifiers/hp465.jpg

Christer 23rd June 2006 10:18 PM

FET(a) and olives anyone?
 
2 Attachment(s)
Sure I can beat that price. This box was even cheaper. I didn't even have to throw away what was in it, I used it in my salad. :)

jackinnj 23rd June 2006 11:22 PM

Being you're from Sweden (Eastern Minnesota) i's surprised that you don't use a Surströmming tin

Christer 23rd June 2006 11:34 PM

Quote:

Originally posted by jackinnj
Being you're from Sweden (Eastern Minnesota) i's surprised that you don't use a Surströmming tin
I would probably never be able to get the bad smell out of it. Besides, I agree with the greeks that FET(a) and olives go well together (the box is housing a pot and a JFET buffer). :)

More seriously, those greek olive tins have a very nice shape for housing electronics, and they come in different sizes. I must admit however that the metalwork was harder than I had realized without proper tools, since the material is quite thin. Anyway, this was just meant as a cheap housing for a prototype, but the point of posting it was to show that one can make a very cheap but still quite decent housing for prototypes and other stuff where it may not matter so much what it looks like (test equipment maybe). Some of my friends think it looks great, though. :)


P.S. I've never heard of Sweden being referred to as Eastern Minnesota, but why not? I wouldn't be surprised if there are more people of swedish origin there than there are swedes in Sweden. Although not quite Minnesota, it is said that Chicago was the third largest city of Sweden in the 1920's (counting only swedes, of course).

Leolabs 25th June 2006 02:35 AM

New Musical Fidelity "Can Phono Stage"???:D

Christer 25th June 2006 02:44 AM

Quote:

Originally posted by Leolabs
New Musical Fidelity "Can Phono Stage"???:D

Maybe I could see the concept to them? :)

Actually, I used it for a while together with a borrowed Music Fidelity power amp, which was a very nice combination.

Salas 9th July 2008 10:52 PM

Re: FET(a) and olives anyone?
 
Quote:

Originally posted by Christer
Sure I can beat that price. This box was even cheaper. I didn't even have to throw away what was in it, I used it in my salad. :)

Was it a Greek salad?:D

Christer 9th July 2008 10:55 PM

Re: Re: FET(a) and olives anyone?
 
Quote:

Originally posted by salas



Was it a Greek salad?:D


Of course, why else do you think I used the side with greek text up? :)

Salas 9th July 2008 10:58 PM

To orient Eddy currents.:)

Conrad Hoffman 10th July 2008 03:02 AM

Build monoblocks and you can play the can-can.

Personally, my favorite tin chassis is the very heavy can that Pepperidge Farm Pirouette cookies come in. Only problem is that for the price of the cookies, one could probably buy a real chassis.


All times are GMT. The time now is 06:20 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2