S1 Pro system

This Page Reviewed By Bose Introduced January 23, 2018 Discuss it here: S1 Pro system community

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Input/Output Panel

Overview

Gain Staging

Using a Bose device as the source

When connecting a ToneMatch Mixer or an S1 Pro System Line Out to an S1 Pro System channel 1 or channel 2

Set the volume control to 10:00 o'clock with 1/4 inch (6.3 mm) Tip-Ring-Sleeve

The signal strength from a ToneMatch Mixer or an S1 Pro System Line Out is sufficient to achieve the maximum usable volume from the S1 Pro System

Control the overall volume from the ToneMatch Mixer or the first S1 Pro System. If you use an XLR cable, set the volume control to 9:00 o'clock

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Using a third-party source (not a Bose device as the source)

For each channel you are using on the S1 Pro System

1. Turn the channel volume off
2. Connect your sound source
3. Adjust the volume of the source device output to the reference or nominal output level.
   • On analog consoles this may be marked as unity or 0 dB.
   • On digital consoles this may be marked as -18 dBFS. The exact value (-18 dBFS to -20 dBFS) may vary depending your location.
   • Refer to the manual for the source device for details.
   • If the source device does not have metering or indicators, set the output as high as you can without hearing distortion or seeing red indicator lights.
4. While playing/singing as loud as you will during your performance, bring up the channel volume until you see solid green on the channel indicator light. Occasional flickers of red are okay. If you see solid red or you hear distortion, turn down the volume.

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Input Gain

Channels 1 and 2

• XLR: -infinity to + 49 dB
• 1/4 inch (6.3 mm) Balanced input (Tip-Ring-Sleeve): -infinity + 42 dB
• 1/4 inch (6.3 mm) Unbalanced input (Tip-Sleeve): -infinity + 36 dB

Aux

• 1/8 inch (3.1 mm) Sterero (Tip-Ring-Sleeve): -infinity to + 17 dB

Recommended Connections

• XLR:
  • Microphones
  • Microphone-level signals
• 1/4 inch (6.3 mm) Balanced input (Tip-Ring-Sleeve): Balanced line-level signals
  • T4S/T8S ToneMatch® Mixers or T1 ToneMatch Audio Engine
  • Third-party mixer line-level output
  • Another S1 Pro Line Output when daisy chaining S1 Pro systems
• 1/4 inch (6.3 mm) Unbalanced input (Tip-Sleeve): Instruments
  • Guitars
  • Keyboards
  • Guitar processors

Related: Balanced vs Unbalanced

Further Reading

• Line Level (Wikipedia)
• What’s the Difference Between Line and Mic Levels? (Shure.com)

Different Volume Control Levels

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.

In the picture above the

1. Microphone is connected to channel 1
2. Guitar is connected to channel 2

The volume on channel 1 (microphone) is higher than on channel 2 (guitar) because the signal from the microphone is lower than from the guitar.

Background Information

• The power amps are running at full volume
• 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 center detent is a convenient point of reference, especially when you can't see the controls well at a gig
  It is not an indication of a specific amount of gain
• 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

The 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.

We want you to enjoy your S1 Pro system without having to be concerned about the inner workings. Just plug in your microphone and instrument, turn up the volume and perform.

Please use the volume controls to get the loudness you need for your show. It's not necessary to have the volume controls at the same level. And unless you have similar input sources it's unlikely the controls will be at the same level.

Maximum Usable Volume

When the channel is clipping (red light), or you hear audible distortion, you have reached the maximum usable volume the S1 Pro can provide. This can happen lower or higher on the volume control depending on the signal strength of your source.

Unless you have an input source that is lower than a typical microphone or guitar with a passive pickup, you should not need to add another device between your source and the S1 Pro. You can add preamps, processors, pedals, or transformers if you like, but it's unlikely that any of these will change the maximum volume the S1 Pro system can provide.

Volume below and above 12:00 o'clock on volume controls

There is no special processing or split in the way we handle the signals below and above 12:00 o'clock on the volume control.

What you are experiencing is directly related to the input signal. If you have a very low input signal (e.g., microphone or bare piezo pickup), you will need to turn up volume control to hear that signal, compared to a higher input signal (e.g., microphone through a mixer or wireless receiver or a guitar with a built-in preamp).

If you connect a microphone or a guitar to a ToneMatch (or other) mixer, turn the output volume down, connect it to the S1 Pro through a 1/4 inch input, you can get the same behavior as connecting a microphone to the XLR input - very little response until you turn up the volume. The point at which you hear sound will be directly related to the output volume on the mixer. That point is may not be 12:00 o'clock. It will depend on the output of the mixer.

Suggestions

If you've got the microphone channel volume all the way up, you may be able to get a bit more by turning up the bass and treble.

When the channel LED light goes solid red, you have reached the maximum volume available for the channel. Adding a mixer between the microphone and the S1 Pro will not give you a louder, cleaner signal if it is already solid red. All you'll get is distortion.

If you have a microphone with relatively low sensitivity (e.g., Shure SM58), consider getting a microphone with a higher sensitivity. See Dynamic Microphones for a list.

Make sure you have the ToneMatch Preset switch set to MIC for the microphone and GUITAR for the guitar.

If you've maxed out your options with the microphone channel, try turning down the guitar to get a better mix.

Impedance Matching Transformer

There's nothing gained by using an impedance matching transformer. To match the performance you get with the impedance matching transformer, without one, turn up the volume control. Either way, you have reached maximum usable volume when the input clips and you hear distortion. You may get to that point at a lower setting on the volume control with the impedance matching transformer, but with or without it, the maximum output available is the same.

You may feel better if the volume controls are closer to the same setting (using an impedance matching transformer) however, this adds another device to your signal chain. It's another potential point of failure, and a relatively large device to plug directly into the S1 Pro. You don't want to damage the input if you knock over the S1 Pro and it hits the impedance matching transformer.

Wireless Microphone Receiver

Some wireless microphone receivers have output level controls or different outputs with different signal levels.

If there is a line-level output and you use that, then the signal level will be higher than a wired microphone. You will reach the maximum usable volume at a lower setting on the volume control.

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Related conversation: S1 Pro Volume Controls - Why do I have to turn up the microphone higher than the guitar?

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ToneMatch® Presets

On Channels 1 and 2 you can select a ToneMatch® Preset.

These are the equivalent Presets on the ToneMatch® mixers (T1, T4S, T8S)

Off

Category: Utility

Preset: Flat

L1 Compact equivalent: Channel 2, Line Level (switch position down)

Guitar

Category: Acoustic Guitars

Preset: Steel String w/piezo

L1 Compact equivalent: Channel 2, Guitar (switch position up)

Microphone

Category: Vocal Mics

Preset: Handheld Mics

L1 Compact equivalent: Channel 1

The Microphone Preset includes a sharp low-cut filter, keeping only that part of the audio spectrum where the microphone is useful. Using the microphone with this preset minimizes bass regeneration. The microphone preset was developed for close microphone use (“eat the mic”), which is the best way to optimize your vocal signal for tone and gain before feedback.

About the presets: No mic that I know of sounds good for close vocal, even for recording for that matter. All our presets compensate for this. A lot of these mics sound a lot more natural when you back off a foot or so from them. Of course, this is true in the studio too. No one does this for a live performance (backs very far off the mic) since you want to maximize gain before feedback by eating the mic. And so then you get funny sound and so then you need our presets to make it natural.

S1 Pro Battery

Run Time

Up to 11 hours of play .

The full output of the S1 Pro system is available even when running on the internal battery. This is unlike some systems that throttle performance to extend the battery life.

Charging Times

Estimates:

• 6.0 hours Trickle charge (system idle, connected to AC Power), switch in Off or Play position
• 2.5 hours Fast charge (connected to AC Power), switch in Fast Charge (down) position

Checking the Battery Level

To check the battery, turn on the S1 Pro (switch in the top position). Wait until the power light is steady blue. Double tap the Bluetooth button (tap tap in under a second). Count how many times the power light blinks before returning to steady blue.

NOTE If you are running your S1 Pro System and battery LED turns solid red - you the battery is nearly out of power. Connect to AC power to keep the show going.

Battery Specifications

Battery Life

Bose does not make claims about battery life however, you may find this article useful Battery Life.

Temperature Considerations

Please note the following information from the S1 Pro Battery Pack Owner’s Guide:

• Charging temperature range: 0°C - 42°C (32°F - 108°F)
• Discharging temperature range: -20°C - 45°C (-4°F - 113°F)

You can operate the S1 Pro on the battery pack down to -20°C (-4°F), The running time may be reduced but not significantly.

NOTE

The battery does not charge temperatures below 0°C (32°F).

The battery will stop charging when the temperature is below 0°C - 42°C (32°F - 108°F) but the charging light may continue to flash.

The battery will stop functioning below -20°C - 45°C (-4°F - 113°F)

If you have questions on this point please see Battery Life in the Cold

Installation

The screw heads are Phillips.

Flying with the Lithium Ion Battery

Here's some information about Flying with Lithium Ion batteries from the FAA

https://www.faa.gov/about/init.../more_info/?hazmat=7

Size limits: Lithium metal (non-rechargeable) batteries are limited to 2 grams of lithium per battery. Lithium ion (rechargeable) batteries are limited to a rating of 100 watt hours (Wh) per battery. These limits allow for nearly all types of lithium batteries used by the average person in their electronic devices. With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101-160 watt hours). This size covers the larger after-market extended-life laptop computer batteries and some larger batteries used in professional audio/visual equipment.

The battery in the S1 Pro is rated at 79.20 Wh. That's not in the documentation, but it is on the label on the battery.

Pole Cup Switch

The S1 Pro uses an accelerometer to determine if it is in the tilt-back, horizontal or vertical position. It also has a switch inside the pole cup to determine if it is mounted on a speaker stand. Based on the orientation and the switch, the S1 Pro automatically applies the correct EQ. If you depress the switch the speaker stand EQ is applied regardless of the orientation of the S1 Pro.

Here's a picture of the switch inside the pole cup.

Warning - Do NOT use Speaker Stands Like This

Bose recommends using speaker stands that have solid, smooth surfaces. Do not use stands like the one shown to the right. It will damage the switch in the pole cup.

Channel 3 Volume Control

Slow to Respond

If you find the volume control seems slow to respond (especially between 7-11 o'clock) please turn up the volume at the source (Bluetooth or physical connection).

Steps in Volume

The S1 Pro has a digital gain knob on channel 3 which is divided into incremental steps. When you slowly turn the volume knob up with a strong input signal present, you may hear steps in loudness.

We are aware of this behavior and it is not a symptom of a fault or malfunction.

Noisy Volume Controls

On S1 Pro system channels 1 and 2: When you rotate the volume controls back and forth within 10 seconds of turning on the unit, you may hear a scratchy sound.

This is not a symptom of a hardware issue with the volume controls that warrants concern.

The noise is related to a start-up process within the unit, not the volume controls. The noise you hear is not the result of a physical problem with the volume controls.

When you turn on the unit and rapidly turn one of the volume controls back and forth you may hear a noise. This can happen on either channel, 1 or 2.

After several seconds, the sound stops. At this point, the volume controls on both channels 1 and 2 should work as expected, quietly.

If you cycle the power off and back on, you can get the same result on the other channel, 1 or 2.

If you turn on the unit and let it sit for 20 seconds, the volume controls are quiet. That doesn't mean you have to wait for 20 seconds before you can use the unit. You just have to wait for 20 seconds if you don't want to hear the noise when you rotate the volume controls quickly.

Related discussion in the Bose Portable PA Community

Line Out

¼ inch (6mm) Tip-Ring-Sleeve jack: Nominal +2.4 dBu, Max +20 dBu

Output Impedance: 9.4 kilo-ohm kΩ

Note: Using a Tip-Sleeve unbalanced cable will result in a drop in the audio level of -6dBu.

Note: There is no limiter on this output so you may get more than the rated maximum, but it could sound distorted.

Bluetooth

Version

The S1 Pro system supports Bluetooth version 4.2

Bluetooth Pairing

1. Turn on the Bluetooth feature on your mobile device.
   Note: The Bluetooth feature is usually found in the Settings menu.
2. Press and hold the Bluetooth Pair button for two seconds.
   Note: When ready to pair, the Bluetooth button will flash white.
3. Select your Bose® SI Pro system from the device list.

Note: When the device pairs successfully, the Bluetooth button will turn solid white. Note: If your paired phone receives a call, any music playing will be paused and the ring will come through the phone: no calls or notifications will come through the SI Pro.

Once you have paired the S1 Pro system to a Bluetooth device, the S1 Pro system will automatically connect to that device when you turn on the S1 Pro system if it is powered on and within range. If you want to terminate that connection, terminate the connection on the Bluetooth device.

More detail on Bose.com

Clear the Bluetooth Pairing List

1. Press and hold the Bluetooth button. until it goes dark (about 7-10 seconds).
2. On your Bluetooth device, remove the Bose S1 Pro from the device list.

You are now ready to pair the S1 Pro to a Bluetooth device.

Turn off Bluetooth

You cannot turn off Bluetooth however, Bluetooth will turn off after about two minutes after you turn the power on unless the S1 Pro successfully connects to a Bluetooth device.

When you turn on the power on the S1 Pro, it will attempt to connect to a paired device via Bluetooth. If there are no paired device, it will go into pairing mode.

If the S1 Pro cannot connect to a paired device, the Bluetooth light will blink for about two minutes while it is attempting to connect. If it doesn't make a connection, the Bluetooth light will turn off (time out). At that point, the Bluetooth is off until the next time you turn the power off/on.

Disconnect a Bluetooth connection

If you have Bluetooth connection active and you want to disconnect it. If you manually disconnect, the S1 Pro system will time out after about 2 minutes, and Bluetooth will remain off until the next time you power off/on.

IOS

Starting with iOS 9, Apple has added a new option for Bluetooth devices:

• Open Settings, select Bluetooth
• Tap the "i" circle button to the right of the accessory.
• From there, you can see the new "Disconnect" option, alongside the legacy "Forget This Device" choice.

Android

Disconnect or Unpair from a Bluetooth Device

• From home, tap Apps > Settings > Connections tab > Bluetooth.
• Tap the ON/OFF slider to turn Bluetooth on.
• Tap the connected device, and then tap OK to disconnect.

Reconnect a Bluetooth Connection after a time out

If the S1 Pro system Bluetooth light is off (because it has timed out), if you press it briefly, it will blink.

With the Bluetooth light blinking, I've been able to initiate a Bluetooth connection from a previously paired device. This worked with:

• An IOS 11.4 device
• An Android 7.0 device
• A Windows 10 device

Rotating the Logo

Rotate the logo counter-clockwise NOT clockwise. Don't force it. You will break the mechanism.

S1 Pro System Reset

1. Disconnect everything (audio, USB connections, Power)
2. Remove the Battery
3. Wait 30 seconds
4. Reconnect

S1 Pro system FAQ

What makes the Bose S1 Pro multi-position PA system different from other PA systems?

The S1 Pro is the ultimate all-in-one PA, floor monitor, practice amplifier and primary music system. Multiple positions, supported by Auto EQ, ensure that you always sound your best. And with a 3-channel mixer, reverb, Bluetooth® streaming and ToneMatch processing onboard, the S1 Pro is ready to be your go-anywhere PA.

How do I set the system up?

1.) Choose your system orientation based on the application.
2.) Plug in the AC power cord or use optional battery
3.) Connect audio source. If using a guitar or microphone, set the ToneMatch switch to the appropriate setting.
4.) Turn the power on and turn up the volume controls.

What is the optimal placement when using the S1 Pro?

The versatile S1 Pro system operates in four unique modes and can be set up differently based on the application.
Elevated Surface
Position the S1 Pro on a surface. This projects sound clearly and evenly throughout the audience, and ensures that audience members enjoy the full frequency range of the system.
Tilt-Back
For performances where your audience is close to you, tilt the S1 Pro onto its back edge. For best results, the performer should stand or sit to one side of the loudspeaker to avoid blocking sound from the audience.
Monitor Mode
To use the S1 Pro as a personal floor monitor, place it on the ground horizontally, in front of and pointing toward the performer. Tilt the loudspeaker onto its side edge. Rotate the Bose logo counterclockwise to match your chosen mode.
Speaker Stand
Place one or two S1 Pro systems on speaker stands (sold separately) for general-purpose sound reinforcement.

What function does Auto EQ perform?

Auto EQ provides optimal performance by sensing the orientation of the S1 Pro multi-position PA system using internal sensors. Once placed into a new position, the system applies the optimal equalization curve to maximize the quality of sound.

Given its smaller size does the S1 Pro system project sound as far as the L1 Compact system?

The S1 Pro multi-position PA system produces horizontal coverage that is comparable to that of L1 systems. Longer line arrays, such as those found in these systems, can project sound further with less drop-off of sound levels than the smaller array found in the S1 Pro.

Is the S1 Pro multi-position PA system designed for Mobile DJ’s?

Yes. The enhanced portability, easy set-up and professional sound quality of the S1 Pro system makes it suitable for a variety of applications as a smaller PA system: DJs, community and athletic events, business presentations, or wherever high-performance and easy-to-use sound amplification is needed.

The S1 Pro features best-in-class Bluetooth® streaming with one-button pairing. A 3.5 mm input for connecting a DJ mixer, laptop, CD player, or portable audio device allows for wired operation. When making announcements, simply plug a dynamic handheld microphone into one of the microphone/instrument channels.

Two S1 Pro systems are recommended for DJ applications to help reproduce stereo sound. Additionally, a single S1 Pro system can be conveniently used as a satellite system for larger DJ events.

What are the benefits of the integrated ToneMatch processing?

Whether you’re using an acoustic guitar or a handheld dynamic microphone, ToneMatch allows you to match the sound of the source by maximizing the sonic properties through equalization.

How many channels does the S1 Pro system have?

Three. The S1 Pro system has two full-featured channels designed for live speech or musical performance and one channel dedicated to prerecorded material using Bluetooth® streaming or 1/8” (3.5 mm) source.

Does the S1 Pro multi-position PA system have an analog audio output for expansion?

Yes. The S1 Pro multi-position PA system has a balanced line output to send the master mix out to another S1 Pro or to an audio console. 

Are the S1 Pro systems compatible with T4S/T8S ToneMatch mixers?

Yes. However, please note that the optional ToneMatch power supply is required for operation. For musical performances that require access to our most advanced tone shaping library, a full suite of studio quality effects, dynamics processing, and expanded inputs and outputs, ToneMatch mixers are the recommended choice.
To use the T4S/T8S ToneMatch mixer with the S1 Pro multi-position PA system, connect a master output of the ToneMatch mixer to input 1 or 2 on the S1 Pro system. Adjust the master level of the ToneMatch mixer to at least 50% and adjust the S1 Pro input volume knob to the desired level.

How can I take advantage of instruments or devices that deliver stereo output?

A single S1 Pro multi-position PA system can combine the two channels and fill the venue with one speaker. For instruments or recorded material where stereo reproduction is essential, two S1 Pro systems can be used to deliver stereo sound.

How are you able to obtain such a high level of performance from a smaller system?

Great care was taken in the design process to ensure that all the speakers and electronics perform as one integrated system. This allows the S1 Pro multi-position PA system to be extremely efficient and maximize its acoustical output while maintaining its small profile.

Is the S1 Pro water resistant?

The S1 Pro is not water resistant. It does however ship with a slip cover for normal transport.

Can I connect an external subwoofer, such as the Bose B1 bass module, to the S1 Pro multi-position PA system?

No, the system does not support adding bass modules. However, the S1 Pro does provide a reasonable amount of bass from its integrated high-excursion woofer.

Where should the S1 Pro multi-position PA system be positioned on stage?

System placement requirements for the S1 Pro multi-position PA system are flexible. For optimal sound for both the audience and performer, position the system directly behind – or behind and slightly off to one side of – the performer.

Does the S1 Pro have a universal power supply, so it can be used with any wall outlet?

Yes. The S1 Pro has a universal power supply that allows it to operate in regions ranging from 100V – 240V. The proper power cord for the specific region in which the system was purchased is included in the product carton.

What is the warranty period on the S1 Pro multi-position PA system?

The S1 Pro multi-position PA system has a two-year limited warranty.

Can the S1 Pro multi-position PA system be used together with an L1 system?

Yes. All systems can share the same stage. The L1 Compact and L1 Model II systems have longer line arrays than the S1 Pro and can project sound further with less drop-off of sound levels than the smaller array found on the S1 Pro.

Where can I learn more about the S1 Pro multi-position PA system or L1 portable line array systems and obtain tips on maximizing the benefits of my system?

Please visit the Bose Pro Portable PA Community

Source: Bose Pro

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