I'm starting a new discussion to provide the Bose reply to this question
Question: Why do I have to turn up the microphone higher than guitar?
Answer: The output level of the guitar is louder than the output level of the microphone. That's why we have to turn up the microphone higher.
This is how my S1 Pro looks most of the time. The microphone is connected to channel 1 and the guitar is connected to channel 2.
There’s been a lot of discussion here lately about
- Unity gain
- The center détente is unity
- Not enough reaction to the volume controls below unity
- Not enough headroom when the volume control (for a microphone) is at 3:00 o’clock or greater
Let me address these points.
The volume controls are trim controls:
- Note how quiet the S1 Pro is when there’s no input source and the volume, is all the way up – The volume controls are trim not preamp/gain controls
- The concept of unity gain does not apply
- The concept of headroom doesn’t apply
- The center détente is a convenient point of reference, especially when you can't see the controls well at a gig
The power amps are running at full volume
- When you turn the volume controls all the way up, you have reached the maximum volume the S1 Pro is capable of producing for that source
- Note the clip lights. If you see red, turn down to avoid distortion. You have reached the maximum usable volume just below clipping
We hit maximum usable volume for an input is just before the clip lights come on. With a guitar with a preamp, that might be at 12:00 o’clock compared to a microphone at 3:00-4:00 o’clock. There’s no dysfunction here. It’s a reflection that the output level of the guitar is higher than the microphone.