I/O level button preamp

[davecg321]

Hey all


should i have the button on my art pro mpa pressed in (+4dbu) or out (-10dbv)

i am running xlr to trs jacks from the preamp to a firestudio project interface.

not sure what what the ideal setting should be...?

cheers


Dave

 

[Steenamaroo]

Hi Dave.
Investigate. There'll be user manuals available for both pieces of equipment.

 

[Farview]

If the firestudio line inputs are +4, set the preamp to +4. If they are -10, set the preamp to -10.

The setting is there to match the line level to the next piece in the chain.

 

[davecg321]

the last page of the manual says: Maximum input level (unity gain) +10dbu

http://www.presonus.com/uploads/products/2324/downloads/FireStudioProject_OwnersManual_EN.pdf

does this mean i should have it pushed in? sorry for my ignorance

dave

 

[Steenamaroo]

In the same section is says
"THD+N (unwtd, 1 kHz @ +4 dBu Output, Unity Gain)
S/N Ratio (Unity Gain, unwtd, Ref. = +4 dBu, 20 Hz to 22 kHz)"

If they're taking measurements at +4 and the maximum input level is +10, I'd use your preamp at +4.

To be honest you'd probably know instinctively. It'll either be way to loud, way too quiet, or just right.
Go get 'em, Goldilocks.

 

[davecg321]

ok i think that has cleared that up, many thanks all

 

[Farview]

That spec doesnt tell you what you need to know, I just tells you how much signal you can feed it. But, I would assume from thay spec that you should be running at -10. I say this because if you send it a signal with a nominal level of 4m it only leaves you 6db of headroom. If the nominal level is -10, you end up with 16db of headroom, which seems more reasonable.