Guidance needed on direct box build

Started by jasonsmusicgear, August 07, 2007, 01:47:30 PM

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jasonsmusicgear

I would like to build a direct box really just to learn how it works, I know it can be more expensive than buying one but I would like to learn.  I have searched the boards and have not found too much on DI boxes.  I did find this link which was great 
http://www.epanorama.net/links/audiocircuits.html

What transformer should I use?  On Smallbear's site there is one that specifically says "for direct boxes" (Mouser #42TM018).  Is there any reason I should get a different one?

Please post any additional links on this subject or any threads I might have missed.

Thanks

Dragonfly

Also check out these links for DI schematics....

www.jensen-transformers.com

http://www.diyfactory.com/

moosapotamus

Try using the search function?

The ideal direct box ouputs exactly what you put in, and the transformer you choose can have a big impact on the quality of the output sound. There are better DI traffos than that mouser traffo, but you'll have to pay more... of course. ;)

Jensen is a good choice, but they are not cheap. The JT-DB-E which is the standard choice for a DI is like ~$70. However, most folks will definately hear a difference in comparison to the Mouser traffos.

I've read some very good things about Edcor traffos and they are much more affordable. The sell direct from http://www.edcorusa.com.
This might be a good one for a DI box... http://www.edcorusa.com/products/transformers/wsm/wsm10k-150.html

If you want to go transformerless, try the country hick at diyfactory (link posted by Dragonfly).

~ Charlie
moosapotamus.net
"I tend to like anything that I think sounds good."

Dragonfly

Quote from: moosapotamus on August 08, 2007, 10:19:30 AM
Try using the search function?

The ideal direct box ouputs exactly what you put in, and the transformer you choose can have a big impact on the quality of the output sound. There are better DI traffos than that mouser traffo, but you'll have to pay more... of course. ;)

Jensen is a good choice, but they are not cheap. The JT-DB-E which is the standard choice for a DI is like ~$70. However, most folks will definately hear a difference in comparison to the Mouser traffos.

I've read some very good things about Edcor traffos and they are much more affordable. The sell direct from http://www.edcorusa.com.
This might be a good one for a DI box... http://www.edcorusa.com/products/transformers/wsm/wsm10k-150.html

If you want to go transformerless, try the country hick at diyfactory (link posted by Dragonfly).

~ Charlie


In addition to what Charlie mentioned, Sowter and Lundhal make excellent transformers.

jasonsmusicgear

Thanks guys I will check out these links as soon as I get off work.