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[[Image:B1Bass.gif|right]]
<table><tr>
<td valign="top" width="300">__TOC__</td>
<td valign="top">{{B1 Bose Link}}


== Keep the B1s Together ==
* Portable, lightweight bass module
* Designed to provide deep, balanced bass for Model 1S and Model II systems
* Features two 5.25" high-excursion drivers built into a rugged enclosure
* Interlocking end caps allow up to four B1 modules to be stacked together
* Includes a slip cover and NL4 cable


If you have more than one B1 playing the same sound source (instrument), keep the B1s together. You should get as much as 3 dB more than if you have them separated. This is due to acoustic coupling. This also avoids creating [[nulls]]. You can stack them or have them side-by-side but you want to keep them together. For more comprehensive discussion about this see [[{{PAGENAME}}#Arranging and Placing the B1s|Arranging and Placing the B1s]] (below).
Technical Specifications<ref>[http://worldwide.bose.com/pro/en_us/web/l1_model2/page.html?term=bass_modules&view=general Bass Modules]</ref>


== Arranging and Placing the B1s ==
* Weight: 26.6 lb (12.1 kg)
Chris-at-Bose talks about how and where to locate your B1s
* Impedance: 8 ohms
* [[B1 Bass Module/Positioning]]
* Frequency Response: (-3dB) 40Hz – 200Hz
* [[Bass Outdoors]]
* Frequency Range: (-10dB) 35Hz – 220Hz
=== Stacking (up to four high) ===
From page 12 of the [http://www.bose.com/pdf/musicians/120VOwnersGuide/AM263976_03_120V_OG_ENG_Viewable.pdf Owners Guide]


[[Image:B1Stack4.png]]




== Check the Cables==
== Documentation ==
[[Image:B1Cable.gif]]
[[Media:B1 Bass Module Installation Guide.pdf|B1 Bass Module Installation Guide]]
You may want to double check your Blue B1 cables. See [[B1 Cable Connections]]


== Rotate the Logos ==
</td>
You can rotate the Bose logo so it is parallel to the floor even if you have turned the B1 on its side.
</tr></table> 
Chuck-at-Bose said, "... Maybe it's my kung fu grip, but I've had good luck with carefully pinching the logo and pulling at these points, then rotating 90 degrees:"


[[Image:B1LogoRotate.jpg]]
== Use the B1 Cables ==


Be very careful with the fine ends of the logo because they can be easily broken off.  You may even try to pull up in the middle with your fingernails on the edge instead of near the ends.
{{B1 Cable Warning}}


== How Low does the B1 Go? ==
== Two B1s  ==
The short answer: 40 Hz.
<section begin=TwoB1s />
But what about instruments that go lower than that, for example a five string Bass. A much better answer comes from Hilmar-at-Bose in [[Bass Frequencies]]
{{Classic icon}}{{Model I icon}}{{Model II icon}} The Classic / Model I / Model II / Model 1S output for the B1s is


*125 Watts into 8 ohms (single B1)
*250 Watts into 4 ohms (two B1s)


Hilmar-at-Bose tells us:


== Port Orientation ==
If you have two sound sources that are
"Theoretically, port-side-up may give a tiny bit better aligned floor reflection but in practice, the difference is so small that it isn't worth bothering with.
However, I would still advise when you stack multiple B1s keep them all in the same orientation." - Hilmar-at-Bose <ref>[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/9791009151/r/9791009151#9791009151 B1 Port Orientation: Hilmar's  post in the Bose® Musicians Community Message Boards]</ref>


When I read this, I had to go and look very closely to find the port. It's easier to figure out that when the B1 is on it's side, port side up is same as (on the back) connection panel down.
*relatively small
*not driven very hard
*you look only at relatively low frequencies


== Longer cables for B1s ==
Then you get +6 dB more sound pressure level (SPL) from 2 as compared to one.


Unfortunately, the Speakon connector comes in three different flavors, NL2 (2-pins), NL4 (4 pins), and NL8 (8-pins). Most salespeople are not aware of the differences.
Our B1 is a good example of that:
The Bose B1 requires a NL4 connector with all 4 pins connected (that's why we call it 4-wire cable).


A good source for these cables is
*2 B1s give 6 dB more than one.
*You gain 3 dB by simply doubling the electrical power (250 Watt for two, 125 Watt for one).
*The other 3 dB is gained by doubling of acoustic volume, cone area and close coupling between the speakers.


http://www.audiopile.net
To get the same SPL (as 2 B1s) from a single B1 you would actually have to hit it with four times the power (500 Watt).  


for example
Source: [http://bose.infopop.cc/eve/forums/a/tpc/f/8766055944/m/572103376?r=259107776#259107776 How much power...] discussion in the {{forum}}


http://www.audiopile.net/products/Speaker_Cables/NL-4_speaker_cable/NL413_cutsheet.htm
;System voicing


If you call Mark and tell him you want the cable for the Bose B1, you will get on that is made to our specifications. You can also any custom length cable at a very reasonable price.  
:Hilmar-at-Bose
<blockquote>
::We have carefully voiced the system to have the "best" spectral balance. Ideally, this spectral should not change, no matter how many bass modules are attached. More bass modules simply allow you to play louder and have more headroom. Adding the second B1 will not change the spectral balance but play louder.  


=== German ===
::The Power Stand senses how many B1 bass modules are attached (0<ref>not applicable to Model II or Model 1S - both must use at least one Bass module.</ref>, 1 or 2) and adjusts the internal EQ accordingly. In the case of attaching the second B1 the Power Stand will drop the bass level by about 6 dB so that the overall acoustic output stays the same.
German (translation provided by [http://bose.infopop.cc/eve/personal?x_myspace_page=profile&u=8801052851 BlackForestMan])


SPEAKON Kabel gibt es in 3 verschiedenen Varianten, NL2 (2-polig), NL4 (4-polig), and NL8 (8-polig). Häufig kennt das Verkaufspersonal diese Unterschiede nicht. Das Bose B1 Bassmodul benötigt aber ein NL4 bei dem alle 4 Anschlüsse verbunden sind (daher sprechen wir hier auch von einem 4-adrigen Kabel).
::You can actually notice the change: When you attach (or detach) the second B1, the systems mutes for about a second, adjust its EQ and then comes back again. That's perfectly safe to do while the system is playing.


Fertige Kabel in verschiedenen Längen gibt es z.B. hier:
:Source: [http://bose.infopop.cc/eve/forums/a/tpc/f/1506041054/m/251104076?r=406104076#406104076 Hilmar-at-Bose replies to Single or Double Bass...] discussion in the {{forum}}
* [http://www.thomann.de/ Musikhaus Thomann]
</blockquote>
* [http://www.thomann.de/de/cae_1471015_lautsprecherkabel.htm CAE 14710-1,5 (NL4): hochflexibles Lautsprecherkabel, 4x2,5mm, 1,5m, Speakon --> Speakon]
* [http://www.thomann.de/de/cae_147133_lautsprecherkabel.htm CAE 14713-3 (NL4): hochflexibles Lautsprecherkabel, 4x2,5mm, 3m, Speakon --> Speakon]
dto. gibt es auch in 5m, 10m, 15m Länge usw.


In der Regel wird auf Anfrage aber auch jedes lokale Musikgeschäft ein Speakon NL4-Kabel in passender Länge herstellen können.
<section end=TwoB1s />


== Keep the B1s Together  ==


If you have more than one B1 playing the same sound source (instrument), keep the B1s together. You should get as much as 3 dB more than if you have them separated. This is due to acoustic coupling. This also avoids creating [[Nulls]]. You can stack them or have them side-by-side but you want to keep them together. For more comprehensive discussion about this see [[{{PAGENAME}}#Arranging_and_Placing_the_B1s|Arranging and Placing the B1s]] (below).


== Arranging and Placing the B1s  ==


- Hilmar-at-Bose<ref>[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/2941001112?r=8521011112#8521011112 B1 Cables]</ref>
Chris-at-Bose talks about how and where to locate your B1s


*[[B1 Bass Module / Positioning]]
*[[Bass Outdoors]]
=== Stacking (up to four high)  ===
From page 12 of the [http://www.bose.com/pdf/musicians/120VOwnersGuide/AM263976_03_120V_OG_ENG_Viewable.pdf Owners Guide]
[[Image:B1Stack4.png]]
== Using More Than Two B1s with a Power Stand ==
{{:Using More Than Two B1s with a Power Stand}}
== Rotate the Logos  ==
{{:B1 Rotate the Logos}}
== How Low does the B1 Go?  ==
The short answer: 40 Hz. But what about instruments that go lower than that, for example a five string Bass? A much better answer comes from Hilmar-at-Bose in [[Bass Frequencies]]
== Full Range of the B1  ==
40 Hz to ...
[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/6761081513?r=8631063513#8631063513 Hilmar-at-Bose tells us]
:It's a relatively small woofer and it's good up to 3.5 kHz or thereabouts, which is plenty for many bass applications. It's not quite as smooth in the mid range as I would like for a "full range" speaker.
;Question — Would that be because of the cabinet design or the speakers?
:little of both actually but mostly it's cabinet design. The box is optimized to provide very good low bass and we just didn't want to compromise to dial in the higher resonances, since we were not planning on using the box at these frequencies.
== B1 with non {{L1 nl}} loudspeaker systems<br>  ==
{{:B1 Bass Module as Subwoofer}}<br>
== Port Orientation  ==
"Theoretically, port-side-up may give a tiny bit better aligned floor reflection but in practice, the difference is so small that it isn't worth bothering with. However, I would still advise when you stack multiple B1s keep them all in the same orientation." - Hilmar-at-Bose <ref>[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/9791009151/r/9791009151#9791009151 B1 Port Orientation: Hilmar's  post in the Bose® Musicians Community Message Boards]</ref>
When I read this, I had to go and look very closely to find the port. It's easier to figure out that when the B1 is on it's side, port side up is same as (on the back) connection panel down.
== Check the Cables  ==
[[Image:B1Cable.gif|right|B1 Cable]] You may want to double check your Blue B1 cables.
{{:B1 Cable Connections}}
== Longer cables for B1s and B2s  ==
<section begin=LongerCables />
The Bose B1/B2 requires a NL4 connector with all 4 pins connected (that's why we call it 4-wire cable). Unfortunately, the Speakon connector comes in three different flavors, NL2 (2-pins), NL4 (4 pins), and NL8 (8-pins). Most salespeople are not aware of the differences.
A good source for the correct cables is
[http://www.audiopile.net/NL413GA Audiopile.net NL413GA | NL4 Speakon equipped 13/4 Speaker Cable]
;Note: If you have an L1 Model 1S or L1 Model II - do NOT add a 10k resistor to the cable. That's only required with an L1® Model I or L1® Classic and ONLY if you are using a B2. It is not required with B1 bass modules.
Consider getting 90-degree ends like this:
[[File:NL4FRX.jpg|link=http://www.audiopile.net/NL4FRX|Image=NL4 400w.jpg|200px|NL-4 speaker cable]]
&mdash; Click image for details &mdash;
<!--
[http://www.audiopile.net/products/Speaker_Cables/NL-4_speaker_cable/NL413_dropdown_cutsheet_2.shtml NL413GA]-->
If you call Mark and tell him you want the cable for the Bose B1, you will get one that is made to our specifications. You can also any custom length cable at a very reasonable price.
:Hilmar-at-Bose<ref>[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/2941001112?r=8521011112#8521011112 B1 Cables]</ref>
<section end=LongerCables />
=== German  ===
German (translation provided by [http://bose.infopop.cc/eve/personal?x_myspace_page=profile&u=8801052851 BlackForestMan])
SPEAKON Kabel gibt es in 3 verschiedenen Varianten, NL2 (2-polig), NL4 (4-polig), and NL8 (8-polig). Häufig kennt das Verkaufspersonal diese Unterschiede nicht. Das Bose B1 Bassmodul benötigt aber ein NL4 bei dem alle 4 Anschlüsse verbunden sind (daher sprechen wir hier auch von einem 4-adrigen Kabel).
Fertige Kabel in verschiedenen Längen gibt es z.B. hier:
*[http://www.thomann.de/ Musikhaus Thomann]
*[http://www.thomann.de/de/cae_1471015_lautsprecherkabel.htm CAE 14710-1,5 (NL4): hochflexibles Lautsprecherkabel, 4x2,5mm, 1,5m, Speakon --&gt; Speakon]
*[http://www.thomann.de/de/cae_147133_lautsprecherkabel.htm CAE 14713-3 (NL4): hochflexibles Lautsprecherkabel, 4x2,5mm, 3m, Speakon --&gt; Speakon]
dto. gibt es auch in 5m, 10m, 15m Länge usw.
In der Regel wird auf Anfrage aber auch jedes lokale Musikgeschäft ein Speakon NL4-Kabel in passender Länge herstellen können.
<br>
== Straighten the B1 Cables  ==
Here's a tip from [http://bose.infopop.cc/eve/forums?a=tpc&f=867107664&m=6391041315&r=6391041315#6391041315 Nick from New Zealand]
I've seen it mentioned here a few times - those wriggly uncooperative B1 leads when they're new, and no posts about how to cure the problem.
Here's 3 suggestions:
1. Taking care to hold the speakon connectors, soak the rest of the cable into a bowl of very warm/hot (not boiling) water. DO NOT GET WATER INSIDE THE SPEAKON PLUGS. This will soften the cable up, lie the cable out flat and straight to dry. This will give it a "new memory" of sorts and be easier to maintain in the future.
2. Wrap the cable or lie it flat and straight and leave it on the footpath or driveway in the sun. Shouldn't take long.
3. Leave them wrapped in your car/van on a hot summer day. This is usually how I unintentionally fix all of my cable messes.
{{:B1 Bass Module/New}}
== Classic Extended Bass Package  ==
{{#lst:Classic Extended Bass Package|section1 }}
See [[Classic Extended Bass Package]] for more details.
== Replacement Parts ==
The B1 front Grille is available as a replacement part.
Part Number '''263992''' &mdash; this includes the {{Bose}} logo.
The {{Bose}} logo is not available as a separate replacement part.
You can order this through [[Support]].
== Mechanical Specifications ==
15"H x 10.25"W x 17.75"D ( 38 cm x 26 cm x 45 cm )
25.1 lbs (11.4 kg)  Source: [[Media:B1 Installation Guide International 2006.pdf|B1 Installation Guide International 2006.pdf]]
8 ohms
== Compatibility with Other Members of the L1® Family of Products ==
{{L1 Compatibility}}


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<references/>
 
[[category:Bass]]
<references />  
[[category:B1 Bass Module]]
 
[[category:L1™ System]]
[[Category:Bass]]  
[[Category:B1_Bass_Module]]  
[[Category:L1® System]]
Retrieved from "https://boseperformer.com/B1_Bass_Module"