DI box

[dharma one]

anyone built a DI box themselves? whats the difference in sound comparing transformer designs to opamp ones? got schematics?

also, is it worth building one give you can get b**ringer cheapo ones for £30.. do they sound worthless?

 

[kaur]

do they sound worthless?

yes
for line level maybe ok,but everything else???
try this:
AS004 JT-11P-1 Isolates "Phantom Powered" Guitar or Instrument Buffer (16KB PDF)

bypass elytics with poly caps least 0,1 mf.
there is a thread with more understanding but cant find it

:sad:

 

[clintrubber]

also, is it worth building one give you can get b**ringer cheapo ones for £30.. do they sound worthless?

I haven't heard them yet, but you mean the single or double one ? The double one is cheaper and I saw it uses (needs to use actually) lo-current opamps with lesser specs. FWIW...

 

[kaur]

The double one is cheaper and I saw it uses (needs to use actually) lo-current opamps with lesser specs. FWIW...

my ultradi di120 uses sumpthing like 92f145 ?14pin surfacemount,2 of them,no transformers :wink:

 

[featherpillow]

I built a simple FET-based DI box that I use in the studio quite frequently. It's transformerless, and I think it sounds great, especially considering that I built it for about $20.

 

[kaur]

I put in box Royer fet mod mic circuit ,that i built for russian electret capsule and it gets some dibox use (pieso)time to time ,maybe too much gain but it works.

 

[Jonathan Hayward]

Featherpillow, can you link to it?

cheers.

 

[cayocosta]

Bo Hansen Active DI:

http://www.groupdiy.com/FORUM/viewtopic.php?t=5974

 

[moosapotamus]

[quote author="cayocosta"]Bo Hansen Active DI:[/quote]+2
I built a pair and they are great! Another thread with more info...
http://www.groupdiy.com/index.php?topic=802&postdays=0&postorder=asc&start=0

I haven't touched my sansamp bass DI since. :wink:

~ Charlie

 

[CJ]

there's a country hick floating around here somewhere.


and i don't mean Flatpicker! :grin:

 

[Guest]

I'd be interested in that one... anyone :?:

 

[mnats]

Search?

country hick

http://www.groupdiy.com/index.php?topic=1162

 

[Guest]

I built a miniature tube DI that runs on 48VDC phantom power. The topic is here http://www.groupdiy.com/index.php?topic=1195&highlight=direct+box

 

[moosapotamus]

Thomas
That 6088 mini tube DI looks cool. Any comments on how it sounds? What have you tried using it with?

Thanks
~ Charlie

 

[Guest]

I tried it on my bass and a guitar at a friends studio. We both think it does an excellent job, but I am biassed. It is not very expensive to build, with the exception of the transformer. It took me awhile to grasp DC-DC converters, but with the patients of this forum I finally got it. They are somewhat tricky to get good clean DC from, as Gus has mentioned on other threads. This DI is certainly worth the effort though.

 

[moosapotamus]

Cool
I already have some of those tubes. Soon as I can get the rest of the parts, I'll probably give it a go.

Thanks
~ Charlie