Bose Portable PA Knowledge

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=== Documentation ===
=== Documentation ===
 
*[[Media:Sub1-Sub2 Owners Guide.pdf|Sub1/Sub2 Owners Guide]]
[[Media:Sub1-Sub2 Owners Guide.pdf|Sub1/Sub2 Owners Guide]]
*[[Media:Sub1-Sub2 Quick Start Guide.pdf|Sub1/Sub2 Quick Start Guide]]
 
* [https://assets.bose.com/content/dam/Bose_DAM/Web/pro/global/products/portable_PA/sub1_bass_module/downloads/technical_information/tds_sub1_en.pdf Sub1 Technical Data Sheet]
[[Media:Sub1-Sub2 Quick Start Guide.pdf|Sub1/Sub2 Quick Start Guide]]
* [https://assets.bose.com/content/dam/Bose_DAM/Web/pro/global/products/portable_PA/sub2_bass_module/downloads/technical_information/tds_sub2_en.pdf Sub2 Technical Data Sheet]


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=== Training ===
=== Training ===
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=== Firmware Updates ===
=== Firmware Updates ===
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=== Cardioid Mode ===
{{Cardioid Subs}}
[[File:Sub Cardioid Mode.jpg|thumb|Cardioid Mode]]
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Stack two Sub1 or Sub2 subwoofers in Cardioid Mode for focused, directional performance with reduced rear-firing bass energy (-10 dB SPL). This steers the bass out front, and reduces feedback. This is particularly useful when you have resonant instruments on the stage (e.g., kick drum, upright bass).
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==== Cardioid Subs Explained ====


A cardioid sub configuration allows for a coverage pattern that is not unlike a cardioid microphone pickup pattern. This coverage pattern allows for most of the sound energy to be focused in front of the sub module stack while drastically reducing the sound energy that is propagated behind the subwoofer stack.
=== Level Control ===
This contrasts with a standard subwoofer configuration that will act in an omnidirectional coverage pattern where sound energy propagates equally in all directions for the sub module. The main benefit of the cardioid setup is that the low frequency sound energy from your performance will be focused on the audience and not back onto the stage. This is especially helpful when amplifying large resonant acoustic instruments like drums or an upright bass. This coverage pattern is achieved by changing the direction of the second sub module driver and time aligning it using a small delay to the front facing sub module driver. This will create destructive interference behind the sub stack and results in phase cancellation of the sound energy while creating constructive interference between the modules in front of the sub stack resulting in phase summation and increased sound energy.
{{Sub1/Sub2 Level Control}}


To accomplish this, stack two matching sub modules on top of one another as shown here. Make sure that the module facing away from the audience is at the
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bottom of your stack. This configuration allows for a 10 dB SPL down point located directly behind the subwoofer stack. This configuration is possible with both the Sub1 and Sub2 modules when stacked with an identical module as seen to the left. This can be accomplished without any extra AC power runs thanks to the SubMatch cabling innovation that transmits both power and audio signal to the second subwoofer module.
=== SubMatch Cable===
{{SubMatch Cable}}


[[File:Cardioid Subs 1.jpg|800px]]
=== Crossover Frequencies ===
[[File:Sub1_Sub2_io_panel.jpg|thumb|Sub io panel]]
* LINE IN EQ set to L1: 200 Hz <br>Use with any full size L1 System) 
** This is selected automatically when using the SubMatch cable connection with an L1 Pro32
* S1 Pro: 150 Hz
**  Press and hold LINE OUT EQ button for 4 seconds. The HPF LED will illuminate green. To deactivate the S1 Pro EQ, press and hold for
four seconds
*LINE IN EQ set to LPF: 100 Hz<br>Use this with third-party full-range and mid-high speaker systems


==== Connecting and Setting Up ====
=== SubMatch Connection Signal Flow ===
Connecting and setting up
[[File:Sub1 Sub2 io panel.jpg|thumb]]
To configure cardioid subs, stack two identical modules as seen to the left, connect the top sub module to an L1 Pro32 via a SubMatch cable or an external source and A/C power. Next set the top sub to positive polarity and the bottom sub to cardioid mode by pressing and holding the polarity button until the CARDIOID LED is illuminated.
====L1 Pro 32 SubMatch Output====
* Full range audio signal
* AC Power


Make sure that the LEVEL settings are matched across the sub modules as mismatching them will skew the performance of cardioid mode. Once this setup has been completed a 10dB down point will be present directly behind the sub stack. This performance will be extremely beneficial if your performance includes any large resonant instruments such as an upright bass or a drum set.
====Sub1/Sub2 SubMatch Pass Thru====
* Full range audio signal (unaffected by any settings on the Sub1/Sub2)
* AC Power


[[File:Cardioid Subs 2.jpg|800px]]
====Sub1/Sub2 using a SubMatch port for input====
;LINE IN EQ (LPF or L1)
* The LINE IN EQ is automatically set to '''L1''' regardless of the position of the button


Note: Bose does not claim Cardioid mode increases the Sound Pressure Level (SPL) in front of the subwoofers. The main benefit is that it reduces the SPL behind the subwoofers.
;LINE OUT EQ (FULL RANGE or HPF)
* Line Out 1 LINE OUT EQ is FULL RANGE or HPF depending on the setting of the Line Out EQ button
* Line Out 2 LINE OUT EQ is FULL RANGE or HPF depending on the setting of the Line Out EQ button


See the tutorial in the video below starting at 4:05.


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=== S1 Pro+ with Sub1 or Sub2 ===
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See [[S1 Pro+ with Sub1 or Sub2]]
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=== {{S1 Pro}} with Sub1/Sub2 ===
See [[S1 Pro with Sub1 or Sub2]]


=== Level Control ===
=== {{Compact}} with Sub1/Sub2 ===
{{Sub1/Sub2 Level Control}}
See [[L1 Compact with Sub1 or Sub2]]


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=== Sub2 with Sub1 ===
=== Sub2 with Sub1 ===
{{Template:Sub2 with Sub1}}
{{Template:Sub2 with Sub1}}


=== {{S1 Pro}} with Sub1/Sub2 ===
{{Sub with S1Pro}}


=== {{Compact}} with Sub1/Sub2 ===
{{L1 Model II with Sub1/Sub2}}
Please see [[L1 Compact with Sub1 or Sub2]]


=== Cooling ===
=== Cooling ===
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Sub1 and Sub2 have extruded aluminum heat sinks mounted to the backside of the I/O panel. This pulls heat out of the electronics and transfers some to the air moving through the acoustic volume of the sub and helps to cool.<ref>[https://www.facebook.com/groups/BoseL1/permalink/10159635582172446/?comment_id=10159637158957446 Bose Professional]</ref>
Sub1 and Sub2 have extruded aluminum heat sinks mounted to the backside of the I/O panel. This pulls heat out of the electronics and transfers some to the air moving through the acoustic volume of the sub and helps to cool.<ref>[https://www.facebook.com/groups/BoseL1/permalink/10159635582172446/?comment_id=10159637158957446 Bose Professional]</ref>


=== Running Multiple Subwoofers ===
=== Running Multiple Subwoofers ===
Retrieved from "https://boseperformer.com/Sub1/Sub2"