[LAU] checking passive input frequencies on non Hi-Z connection

Tim termtech at rogers.com
Sat May 27 02:21:17 UTC 2017



On 05/26/2017 09:30 PM, Wayne DePrince Jr. wrote:
> ahoy all,
>
> 	first, thanks for all the informative and detailed replies.  this list
> as always is a valuable resource.
>
> 	one quick follow up question as i digest all this: since it seems
> whether i use a DI box, preamp or effect pedal (one of which i actually do not
> currently have), the overall sentiment seems to suggest using something in the
> passive electric/bass guitar signal chain before directly inputing into an
> interface/mixer.  however, as i mentioned, some of these interfaces i am also
> testing out (e.g. Edirol FA-66, Zoom U-44) have a Hi-Z button on an input
> which supposedly allows direct inputing of a passive signal.  is this Hi-Z
> button just enabling some internal DI box or preamp?  are there drawbacks to
> using it instead of using an actual DI box, preamp, etc?  seems like just
> another way to match that signal to something expected by the input, but again
> i am still wading my way through all this.
>
> 	OK, thanks again for all your advice and help.
>
> peace, w
>
Hi, if your interface has hi-z input, it's preferable to using something 
external.
The internal circuit is tightly designed and integrated properly around 
that input.
Minus one power supply for external active DI or effect box (unless 
phantom-powered).
Minus one patch cord.
(Never discount either causing trouble, eh?)

I use my DI box for plugging in to line-level lower impedance inputs 
like stereos,
  sound cards, or PA systems. Or, with my DI model I can split the 
signal and
  record at low impedance while playing through the guitar amp's high 
impedance.
Awesome feature.

Tim.


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