Currently Being ModeratedNov 24, 2009 11:34 AM (in response to Pykon)RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
It's possible that the output signal from your guitar is just too hot for the either instrument on the TonePort to handle. This makes sense considering the Line inputs work better as they are designed to receive a Line Level (+4db) input signal.
If plugging your guitar into the Line Inputs work for you then you should keep using those inputs.
Have oyu plugged any other straight magnetic pick up guitars into the front Instrument inputs of the TonePort? If so, how did they sound?
Currently Being ModeratedNov 25, 2009 10:25 AM (in response to ricksox)Re: RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
here are the results of my modest diagnostics:
- the signal from pre-amped piezo-acoustic guitar (guitar's preamp volume to the max) tops at some -10 dB when connected into UX2 Line input (value from Gearbox's input meter);
- the same guitar with similar preamp settings tops at some -7 dB (I aproximate this value from UX2 VU's as it's not shown directly in gearbox - when Instrument input is selected, input VU meter disappears) when connected through UX2's Instrument input;
- during the test I used "as dry as possible" setting in gearbox (no amp, no cabinet, no effects, volume at 75 %;
- despite the fact it is pre-amped, guitar's signal doesn't seem do overdrive the Instrument input circuit, as input meters show some headroom even with guitar preamp's volume to the max;
- I've just made similar comparison with my electric guitar (2 x humbucker) and it topped at some -16 dB (line input) and -10 dB (Instrument input) both with no effect/cabinet/amp gearbox settings;
You can hear three attached tracks with my piezo-acoustic guitar. One recorded through Line input (guitar preamp vol to the max), second plugged into Instrument input (guit. pre vol to the max) and, to add some chili, there is also the third track containing sound recorded through instrument input but this time with guitar's preamp volume reduced to 70 %. In theory, it should sound OK, as reducing volume at input lowers the risk of unwanted peak distortion. But that's not the case - the sound is slightly better, but can't compare to the one captured with the line input.
By the way, the difference between sound "from" instrument and line input is not purely distorted/clean type, it's something more complex and hard to describe - instrument input appears to have some kind of a superfast limiter/echo at high frequencies when co-operating with my piezo-acoustic guitar. Is it possible that there are some “hidden” peaks that UX2 peak indicators don’t show? And how to be sure there are no such peaks as in the Gearbox there’s no input meter in Instrument mode?
What's surprising is a modest sensitivity difference between these inputs even with a humbucker pickup. Is it correct?
Please, listen to attached files and compare the sound.
I'll try to do some tests with electric guitar/bass sound, I've never tried to plug them in line input, but maybe it's time to check this out?
PS. I've spent tons of hours on every mix eq-ing and cleaning up acoustic guitar tracks from unwanted harmonics, resonances etc. Now I know I'll have to play and record all the stuff again, this time with line in input. But what if I'm to do the same job on bass and electric guitar tracks...
Even given my enthusiasm for making music - a hard task.
Currently Being ModeratedNov 25, 2009 3:11 PM (in response to Pykon)RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
The only difference in the inputs that I am aware of is with being able to accept instrument vs. line level signals.
I'll have a listen to your clips to get an idea of what you are hearing. I'm on holiday until Monday so I'll get back to you on this when I return. Thanks for your patience.
Currently Being ModeratedNov 25, 2009 3:19 PM (in response to Pykon)RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
Normally a guitar should be connected to the instrument input, but the built-in preamp may be pushing the output beyond what the instrument input can handle. In this case you will want to use the Line in.
General recording pricipals say that you should get the hottest signal you can (without clipping), so depending on how you set up you input these three tracks could be greatly affected in gain strucure alone. impedance and output level can also change 'tone", so you need to keep this in mind when working on tracks. The input meters in your recording SW may give you a better idea of what is happening, but the bottom line is "how it sounds".
You may want to try a different sound card to see if you get the same results.
You can also see the following link for more information:
Please let us know if you need further assistance, or close out the ticket as “answered” if your situation has been resolved.
Currently Being ModeratedNov 26, 2009 1:20 AM (in response to Line6Andy)Re: RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
so you suggest it's correct that the UX2's instrument input pollutes signal from piezo-acoustic guitar so significantly that it can be easily heard despite -10 dB recording headroom? If so, what can I call a "safe" recording level for instrument input?
Maybe I should sent my TonePort to service point for some tests, but I'm not sure that such testing procedures covering dynamics exist.
In the meantime I'll record evetything with line in input, even electric guitar and bass, as I can't feel safe about sound quality when using instrument input.
It's not as it's supposed to be I guess...
Musician needs something predictable in his recording gear to rely on.
Wondering if this time UX2 cuts the warmth ot the guitar or not - could you have any pleasure when playing guitar with this question in mind?
Currently Being ModeratedNov 30, 2009 3:07 PM (in response to Pykon)RE: How to connect acoustic guitar with built-in piezo pickup and preamp to TonePort UX2
As we have already stated, normally an "instrument" level device should go into the "instrument" input, but the built-in preamp may be pushing the acoustic output beyond what the instrument input of the UX2 can handle. It is really up to the end user to decide what "sounds best" as far as recording levels, warmth, and headroom/noise floor.