No high end in my DIs

John_C

John_C

formerly Skeksis268
Dec 30, 2008
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Coventry, UK
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Bit of a retard question here........I just recently got a profire 2626 and the instrument inputs are rated 1 megaohm. I was under the impression that this was plenty, but when i plug my guitar in to record DIs there's nothing happening above 5khz and it's shelving off pretty steeply from 3khz (I've swapped guitars and cables, same results). Is this normal? I've never done anything serious with DIs before, i've always just miced up a cab carefully then played

Whats going on?
 
Possibly a stupid suggestion, but on my M-audio interface there's a switch that changes the instrument input into a line input. I think it changes the impedence and as a result cuts a lot of highs. Perhaps you have one on your Profire too?
 
On the 2626 there's a switch to turn on the instrument inputs, without the button pushed in you get no sound.

If i run my guitar through my Krank distortus maximus on full volume into the instrument input (or line input for that matter) then i get some treble, but it dissapears very quickly as i turn down the master control on the pedal

This is all classic signs of an impedance problem.....but surely 1 megaohm is enough
 
1 MOhm is indeed enough, but I'm pretty sure there's more to a good DI than input impedance! (for example, why I prefer the sound of my passive Redeye to the Radial J48, and how I've heard that despite having a 1MOhm impedance, the Sansamp BDDI sounds like balls for guitar DI's even when all the processing is bypassed. Of course, it could be an issue with the Profire or how you have it routed, but a good active DI is always a good investment IMO, especially if you use passive pickups! (and for UK'ers, I think the BSS AR-133 is the best option, since the Countryman apparently commands ludicrous prices over there)
 
I don't understand where do you get the problem.
There are no frequencies >5K? If I analyze my DI's I can see they go down at 3Khz and the frequencies >3Khz have little movements, lower that the low and mids frequencies.
 
When I compared them, I also noticed that the instrument inputs of my Saffire had less highs than my Countryman DI Box. I didn't try to find out how much of that difference would show when reamping, I just decided to use my Countryman exclusively (of course).
 
I'd say that sounds fine.
Guitars aren't an instrument that needs to be taking up frequency space up at like 10khz anyway, they're focused around the mid-range, so it makes perfect sense for them to be rolling off above 3k.
Anyway, electric guitars are always amplified, so surely the quiet frequencies above that are gonna get amplified too and be more noticeable?
 
Yeah, but for DI's, I'd still wanna capture the sound coming from the pickups as accurately as possible, and be able to experiment with attenuating the highs rather than being stuck with it, and it definitely manifests itself when amplified as a loss of overall clarity/detail IMO!
 
guitars get frequencies from >5kHz from the huge amount of distortion (hence gain) we always seem to be putting on them. 24th fret on high E is only a few thousand Hz.

those DIs sound perfectly normal to me. go find some DIs around on this forum, and do some FSA on them! hehe.

thanks,
 
Well I doubt the Redeye is gonna be adding anything frequency-wise (since it's designed to be transparent and more importantly is passive), so that's probably a boost inherent to your pickup! ;)
 
Metaltastic said:
Well I doubt the Redeye is gonna be adding anything frequency-wise (since it's designed to be transparent and more importantly is passive), so that's probably a boost inherent to your pickup! ;)
Click to expand...

I didn't say that. I said that I checked my DI's and the roll-off at 3Khz is normal
And I think it's pretty useless to check the frequencies of a DI track....reamp it and check the sound of the reamped track. If it sounds good there are no problems
 
EMG's roll-off at 4-6kHz peaks. Good recorded DI track is important starting point for next work.
 
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