Discussions about the Bose S1 Pro system

Bose S1 Pro

Designed for musicians, DJs and general PA use, the S1 Pro is the ultimate all-in-one PA, floor monitor and practice amplifier that's ready to be your go-anywhere Bluetooth music system for nearly any occasion. 

This is the place to discuss the S1 Pro system.

Hello 

I have a question that may be too basic but I hope you'll still help illuminate me. I've recently bought S1 pro and I love it. I use it for gigs with just one acoustic guitar and vocal. Last week we played a small venue when we had two RCFs and used S1 as a floor monitor. Two singers needed to be heard so through a simple mixer there went a mix of two vocals (one of them had some reverb as effects loop we used Lexicon MX300) via TS jack into S1 Pro's first input. We also played some very loud Nirvana covers and during Rape Me there was red light on the first channel probably for 2-3 seconds. I know from the manual that occassional flashes (up to 1 second) are okay but this was a bit longer. I sort of panicked and turned it off for the rest of the gig (the singer was telling me that it can't hurt the speaker, it's just distortion of the sound but nothing more). Was he right? Next day I played some music through it and it seems okay. Still I'm wondering if longer red lights are okay or not? Thanks a lot!

 
Original Post

Hi, nightoul,

Welcome to the Bose Portable PA Community. I'm glad you joined us.

You won't damage your S1 Pro by running it in the red for protracted periods. It may not sound great while you do it, but that's the only harm. There is internal circuitry to protect the S1 Pro from permanent damage.

nightoul posted:

Hello 

I have a question that may be too basic

No questions are too basic.

but I hope you'll still help illuminate me. I've recently bought S1 pro and I love it.

Congratulations!

I use it for gigs with just one acoustic guitar and vocal. Last week we played a small venue when we had two RCFs and used S1 as a floor monitor. Two singers needed to be heard so through a simple mixer there went a mix of two vocals (one of them had some reverb as effects loop we used Lexicon MX300) via TS jack into S1 Pro's first input. We also played some very loud Nirvana covers and during Rape Me there was red light on the first channel probably for 2-3 seconds. I know from the manual that occassional flashes (up to 1 second) are okay but this was a bit longer. I sort of panicked and turned it off for the rest of the gig (the singer was telling me that it can't hurt the speaker, it's just distortion of the sound but nothing more). Was he right? Next day I played some music through it and it seems okay. Still I'm wondering if longer red lights are okay or not? Thanks a lot!

Your S1 Pro was engineered to endure real-world situations. That includes over driving the inputs from time to time.

Does that help?
ST

This is just a headroom issue, your wave is being clipped - hard clip or translated it is distortion. Distortion in tubes is desirable but in digital it will not be so pleasing. Like someone cutting the top of your head so the top is flat.

Hello again. I'm just curious: I've seen a video about some mixer where it was said that the clip indicators light red at about 3dB BEFORE the actual clipping would occur. So basically a safety measure. I was wondering if perhaps S1 has the same feature? 

Also I think that ST wrote somewhere that the volume knobs act as trim knobs, not gain knobs (I hope I'm not misquoting). Does that mean that unity gain is not at 12 o'clock but rather when volume is turned all the way to the right? 

Thank you and sorry if I'm being too pedantic now. But I really love my S1 and want to know it inside out

Hi nightoul,



nightoul posted:

Hello again. I'm just curious: I've seen a video about some mixer where it was said that the clip indicators light red at about 3dB BEFORE the actual clipping would occur. So basically a safety measure. I was wondering if perhaps S1 has the same feature?

Flashes of red: You are approaching clipping

Solid red: You are clipping, but it may not be audible



Also I think that ST wrote somewhere that the volume knobs act as trim knobs, not gain knobs (I hope I'm not misquoting). Does that mean that unity gain is not at 12 o'clock but rather when volume is turned all the way to the right? 

At this position in the signal chain (input sensitivity for a power amp), the concept of unity gain is not all that useful. The concept is most useful when considering a device that is between two others (e.g., an EQ unit between a mixer and a power amp). 

There is gain available to support input sources with low signal strength like microphones and guitars with passive pickups. Turning the volume all the way to the right is too high for line-level sources.

Thank you and sorry if I'm being too pedantic now. But I really love my S1 and want to know it inside out

Turn things up until the unit sounds good. The lights and indicators on the unit can be useful but the best guide is what you hear.

ST

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