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AB splitter or other "box" for DI and amp input signals
Old 5th February 2009
  #1
Gear Head
 
edgarbc1's Avatar
 
🎧 10 years
AB splitter or other "box" for DI and amp input signals

Im a hobbyist so please bear with my newb question.

okay, ive got a M-audio interface which has a built in DI port.
I have been successful in recording with this port with my guitar
directly plugged in.

what I would like to do is use a A/B/Y splitter stomp box to send
the guitar signal to the DI and my amplifier when the box
is set to Y (both). So I can mic the amp and record that at
the same time as the DI input

i have not purchased such a device before, but have seen
several relatively inexpensive A/B/Y stomp boxes on the market.
Morley ABY Channel Switcher and more Guitar Effects at GuitarCenter.com.

I have tried to do my research on the passive boxes, but I cannot
distinguish if this box will make the guitar signal worse when in
Y-mode. e.g. signal degradation when sent to a DI (in the interface)
and the amplifier at the same time.

I have read that this might happen with a passive splitter box.
Also my amp does not have another output for sending the signal
to the interface either (also may damage amp? if not 8ohm)



Do you have any suggestions on what to purchase to be
able to accomplish DI and amp recording at the same time?

thanks in advance!
Edgar
Old 6th February 2009
  #2
Gear Maniac
 
🎧 10 years
If your interface has 2 xlr inputs available, I'd recommend getting a good passive DI box instead of a splitter. The Radial Pro DI would be fine, or one of the many others.

Passive DI boxes allow you to split the signal to an interface and to an amp. Guitar goes in the DI box, XLR out goes to the interface, 1/4 inch "Through" signal goes to amp.

This way you'd get a non-degrading splitter, a possibly improved DI signal, and a solid piece of gear you can use many ways in your studio and live. You will also be able to use a passive DI as a reamp box if you read the many threads on this here. It's not hard, it just takes a little creative thinking, adapters and careful level setting.

If your interface doesn't have 2 xlr inputs, then you may have to go the splitter route. Do you have any guitar effects that already have 2 outputs, like a chorus or volume pedal? You could try one of these before you buy a splitter, especially since you don't really need the switching capability.
Old 6th February 2009 | Show parent
  #3
Lives for gear
 
🎧 15 years
a proper DI would be preferable than a splitter but either would work.
any DI would do basic job it doesnt have to be a radial, although they are proven brand.

Quote:
Originally Posted by Singinto Th'Can ➡️
Passive DI boxes allow you to split the signal to an interface and to an amp. Guitar goes in the DI box, XLR out goes to the interface, 1/4 inch "Through" signal goes to amp.
its important to remember that a through or 'thru' is just a Y-split between the DI and your amp.

Quote:
Originally Posted by Singinto Th'Can ➡️
This way you'd get a non-degrading splitter, a possibly improved DI signal, and a solid piece of gear you can use many ways in your studio and live.
adding a DI would load the guitar the same as any passive splitter going to 2 sources would, so neither is inherently more or less desgrading. although a splitter may have longer cables and there could be other issues like ground loops so having a DI sitting on or next to the amp is desirable.

a passive DI may even load the guitar more so the current DI in the interface, however i dont know what the loading on the DI in your current interface would be and its probably about the same as the JDI. however i would got for something with at least the same impedance as your amp (most amps are 100Kohm) so they the split (between the amp and the DI) is even. most actives have an impedance of 100Kohm or higher (watch out for the cheapies).
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