DI Box builds

[audioguy]

I attempted to search this board for DI Box schems/PCB, but no luck. Maybe I didnt search for the right term, or maybe I didnt sift through the 14 pages of results well enough...
Anyway... has anyone got any DI Box plans laying about? I would like to put something together that would rival a Countryman but obviously without the price tag.

Thanks!

Audioguy

[claydavis]

check out this DI at rod elliot's site. i haven't built it, so i can't vouch for the quality, but it looks like it'd do the trick:

http://sound.westhost.com/project35.htm

you could easily add an active 3-band EQ to the front and have a pretty snazzy DI.
that site is a great resource for all things audio, by the way.

-clay

[AL]

Check out this link. Click on Music Circuits and scroll down to the DI section - there's a ton of info here. When you're done looking through the entire sight - in about 20 years - let me know how the build went.    

http://www.epanorama.net/index.php

AL

[brett]

Hi.  I built an excellent DI box for a friend from a kit.  Couldn't believe how cheap and good it was (about US$30).

I got it here: http://www.dse.com.au/cgi-bin/dse.storefront

The kit was described in Silicon Chip magazine about 2 years ago. A big library might have it.

have fun

[niftydog]

there's this one too

I can vouch for this one, it comes with instructions as well as everything you need to build it and they ship OS via airmail.

I was totally amazed when I ran this through to audio analyser, it's virtually flat from 20 - 20k, I think about 0.5dB band pass ripple!!!

[moosapotamus]

For something rivaling a Countryman DI Box, I think you might have to use a decent transformer (~$70 USD). The Jensen web site has lots of good schemes...
http://www.jensen-transformers.com

Here's another design that I'm about to try...
http://w1.316.telia.com/~u31617586/
I'll be using the Lundhall transformer. Note... no power supply needed, it runs on 24V phantom power.

~ Charlie

[Gilles C]

Humm, I would be curious to try it with a 42TM019 (10K-to-600) from Mouser