View source for External Subwoofers

=== Passive (unpowered) Loudspeakers ===
{{Classic icon}}{{Model I icon}}{{Model II icon}}
Using loudspeakers other than the {{B1}} with any of the {{L1 nl}} systems is not supported. However you can safely try your own external subs if the impedance is no lower then 4 ohms (typically a single 4 ohm loudspeaker or two 8 ohm loudspeakers in parallel). The output from the Power Stand is 250 watts RMS into 4 ohms.   

==== {{Classic nl}} and {{Model I nl}}====
{{Classic icon}}{{Model I icon}}
For the sake of those attaching third party passive speakers (an unsupported application).

Output if no {{B1}}s detected
* 40-{{{Crossover|180}}} Hz Bandpass (that is: NO B1 EQ)

If one or two {{B1}}s detected (or resistors used across NL4 2+ / 2- pins to emulate detection)
* 40-{{{Crossover|180}}} Hz with different EQ curves. For details on how to do this see: [[Activating B1 EQ Curves]]

For more details about the Power Stand outputs see: [[PS1 Power Stand / Bass Line Out]]

==== {{Model II nl}}====
{{Model II icon}}
For the sake of those attaching third party passive speakers (an unsupported application).

Output if no {{B1}}s detected
* 40-{{{Crossover|200}}} Hz Bandpass (that is: NO B1 EQ)

If one or two {{B1}}s detected (or resistors used across NL4 2+ / 2- pins to emulate detection)
* 40-{{{Crossover|200}}} Hz with different EQ curves. For details on how to do this see: [[Activating B1 EQ Curves]]

For more details about the Power Stand outputs see: [[L1® Model II Power Stand / Bass Line Out]]


=== Active (powered) Loudspeakers===
{{Classic icon}}{{Model I icon}}{{Model II icon}}
Using powered loudspeakers with any of the {{L1 nl}} systems is not supported. 

==== [[PackLite® power amplifier Model A1]] ====
The [[PackLite® power amplifier Model A1]] is part the {{l1 nl}} System. It can be used to power up to two {{B1}}s. This is connected to the Power Stand Bass Line Out. 

==== Third Party (non-{{Bose}}) Systems ====
If you want to use a powered loudspeaker system, you can use the Power Stand Bass Line Out as the signal source. Here are notes specific to the {{L1 nl}} you are using.

* [[PS1 Power Stand / Bass Line Out|Model I or Classic Bass Line Out]]
* [[L1® Model II Power Stand / Bass Line Out|Model II]] 


You will probably use an powered loudspeaker in the same way as you would connect an [[A1|PackLite&reg;]] amp. 

Please see [[PackLite® power amplifier Model A1]] for extensive notes that include ideas that can be applied to other systems.

== Ongoing discussion ==
[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/178108737 I need more bass article - discussion]

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[[Category:Bass]]
[[Category:Unsupported Applications]]