Behringer UMC204 low output.

[Arpangel]

Strange, the output has suddenly dropped, for no reason.
It’s plugged into my Mackie 1202 sub mixer, which then goes into my MixWiz, I have to have the gain on the stereo channel at maximum, and even then it’s still about -12dB on my meters, with the UMC volume of max too.
It’s suddenly happened, and it’s puzzling me.

[ef37a]

Strange, the output has suddenly dropped, for no reason.
It’s plugged into my Mackie 1202 sub mixer, which then goes into my MixWiz, I have to have the gain on the stereo channel at maximum, and even then it’s still about -12dB on my meters, with the UMC volume of max too.
It’s suddenly happened, and it’s puzzling me.

Check 'Playback Level' in Windows Sounds Settings.

Those budget AIs don't chuck out much anyway.

Dave.

[Hugh Robjohns]

So is the lack of level apparent at the Mackie sub mixer or the MixWiz?

Does it affect only the Behringer output or other sources too?

If it was working yesterday and not today then finger-trouble is the more likely -- routing buttons mis-set or something like that. But partially pulled out connectors is equally likely.

And I don't know if the interface has a software mixer but check the settings of that, and your routing to the interface from your DAW.

[DGL.]

I did notice that the windows master volume affects both the regular WDM sound output and the ASIO output if the Behringer is used as the main audio output (I also have a UMC204HD). So as has been said before that might be an issue,.
Also check to make sure the master output and mix controls are in the right position if you are using the main/mix 1/4" output rather than the individual output RCA's.

[Arpangel]

too?But partially pulled out connectors is equally likely.

Good point, I’ve checked everything else, all is fine, this could be the issue, my new rack box makes checking these things a real pain!
Also, I’m having trouble setting levels on both my UMC1820 too, the line inputs are way too hot when set to line level, but when set to instrument, all is fine, I have no trouble setting levels in Reaper, I’m running the 1820 from its main outs, straight into the monitors, the 204 through a mixer.

[Hugh Robjohns]

....the line inputs are way too hot when set to line level, but when set to instrument, all is fine

This makes no sense. Line inputs are alwaysless sensitive than instrument inputs. So for a given source level it should be the instrument inputs reading too hot, not the line inputs!

[ef37a]

....the line inputs are way too hot when set to line level, but when set to instrument, all is fine

This makes no sense. Line inputs are alwaysless sensitive than instrument inputs. So for a given source level it should be the instrument inputs reading too hot, not the line inputs!

You would think so Doc' but the (rather limited) specification gives the max input for the line input as +11dBu, same as the mic input but the instrument input can handle +18dBu! The conclusion seems to be that the line ins have more gain?

Dave.

[Hugh Robjohns]

Not sure where your figures come from Dave.

The specs I found* for maximum input levels are:

Mic: -4 dBu / Line: +20 dBu / Instrument: -3 dBu

They conform to my normal expectations. as described above.

*These numbers came from page 42 here: https://mediadl.musictribe.com/media/sys_master/he1/hdc/8849614274590.pdf

[ef37a]

Not sure where your figures come from Dave.

The specs I found* for maximum input levels are:

Mic: -4 dBu / Line: +20 dBu / Instrument: -3 dBu

They conform to my normal expectations. as described above.

*These numbers came from page 42 here: https://mediadl.musictribe.com/media/sys_master/he1/hdc/8849614274590.pdf

I got them from the 'quick start guide' for the 1820. That link does not include the 1820 AFAICS and there is no page 42?

Dave.

[Arpangel]

I assure you, the gain is higher if I select line on the 1820, much higher, than the instrument input, I line my system up so that Reapers inputs correspond to -12bB and the green lights are just flashing on the 1820 inputs, to get that to happen with line, everything overloads, and I can’t reduce the input level in Reaper to -12dB, if I select instrument, all is OK, and lines up fine.

[Hugh Robjohns]

I got them from the 'quick start guide' for the 1820. That link does not include the 1820 AFAICS

Apologies... I thought the discussion was about the UMC204, per the thread title. I hadn't realised Tony had moved on to more problems with an 1820... I can't keep up!

So, having checked the paperwork for that model instead (page 22 here) it does indeed appear to claim that the maximum input levels are: Mic:11dBu / Line:11dBu / Instrument:18dBu

How utterly bizarre and baffling! I'd have assumed that was a paperwork typo but Tony's description would suggest it's really correct. Madness!

Oh well... use the instrument input for high-level line signals then...

[ef37a]

". I can't keep up!" Comes to us all Hugh!

Dave.

[Arpangel]

I got them from the 'quick start guide' for the 1820. That link does not include the 1820 AFAICS

Apologies... I thought the discussion was about the UMC204, per the thread title. I hadn't realised Tony had moved on to more problems with an 1820... I can't keep up!

So, having checked the paperwork for that model instead (page 22 here) it does indeed appear to claim that the maximum input levels are: Mic:11dBu / Line:11dBu / Instrument:18dBu

How utterly bizarre and baffling! I'd have assumed that was a paperwork typo but Tony's description would suggest it's really correct. Madness!

Oh well... use the instrument input for high-level line signals then...

It is weird, only thing I was worrying about, is , are these instrument inputs designed for things like guitars? will they alter the tone or response on anything plugged into them, but I guess, it’s just a pad, nothing else.

[ef37a]

I got them from the 'quick start guide' for the 1820. That link does not include the 1820 AFAICS

Apologies... I thought the discussion was about the UMC204, per the thread title. I hadn't realised Tony had moved on to more problems with an 1820... I can't keep up!

So, having checked the paperwork for that model instead (page 22 here) it does indeed appear to claim that the maximum input levels are: Mic:11dBu / Line:11dBu / Instrument:18dBu

How utterly bizarre and baffling! I'd have assumed that was a paperwork typo but Tony's description would suggest it's really correct. Madness!

Oh well... use the instrument input for high-level line signals then...

It is weird, only thing I was worrying about, is , are these instrument inputs designed for things like guitars? will they alter the tone or response on anything plugged into them, but I guess, it’s just a pad, nothing else.

Some do, some don't. There is no technical reason why an instrument, high impedance input should be any 'flatter' or less linear than any other but some mnfctrs use a discrete FET and make big play of the 'attitude' produced thereby. Personally I would rather have things 'flat, 'clean' and 'dry' !

You could always make up some simple resistive attenuators?

Dave.

[Arpangel]

I got them from the 'quick start guide' for the 1820. That link does not include the 1820 AFAICS

Apologies... I thought the discussion was about the UMC204, per the thread title. I hadn't realised Tony had moved on to more problems with an 1820... I can't keep up!

So, having checked the paperwork for that model instead (page 22 here) it does indeed appear to claim that the maximum input levels are: Mic:11dBu / Line:11dBu / Instrument:18dBu

How utterly bizarre and baffling! I'd have assumed that was a paperwork typo but Tony's description would suggest it's really correct. Madness!

Oh well... use the instrument input for high-level line signals then...

It is weird, only thing I was worrying about, is , are these instrument inputs designed for things like guitars? will they alter the tone or response on anything plugged into them, but I guess, it’s just a pad, nothing else.

Some do, some don't. There is no technical reason why an instrument, high impedance input should be any 'flatter' or less linear than any other but some mnfctrs use a discrete FET and make big play of the 'attitude' produced thereby. Personally I would rather have things 'flat, 'clean' and 'dry' !

You could always make up some simple resistive attenuators?

Dave.

Thanks Dave, I can’t "hear" any difference between the inputs, I guess it is just a pad, sounds clean enough, just the same as the line.