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Template:Bass Line Out: Difference between revisions

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<td>B1 specific EQ on Bass Line Out and B1 Out</td>
<td>B1 specific EQ on Bass Line Out and B1 Out</td>
<td>Reference Level -12 dB</td>
<td>Reference Level -12 dB</td>
<td>If you are using  a {{A1 EB}} this is a total of 4 B1s (2 on the A1 and 4 on the Power Stand) </td>
<td>If you are using  a {{A1 EB}} this is a total of 4 B1s (2 on the A1 and 2 on the Power Stand) </td>


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For 6 B1s you will be 3.5 dB bass heavy, for 8 B1s it'll be 6 dB heavy.
For 6 B1s you will be 3.5 dB bass heavy, for 8 B1s it'll be 6 dB heavy.


=== Bass Module Output (powered output) ===
== B2 EQ ==
{{Bass Line Out Model II Post Firmware 1.4}}
<!--
=== B2 Bass Module connected to the Bass Module Output (powered output) ===
<section begin=Bass Module Output />
<section begin=Bass Module Output />
For the sake of those attaching third party passive speakers (an unsupported application).
-->
<!-- Being investigated with Bose
<strike>  -->


Output if no {{B1}}s detected
Output if no {{B1}}s detected at the Bass Module Output (powered output) the signal at the Bass Line Out is:
* 40-{{{Crossover|180}}} Hz Bandpass (that is: NO B1 EQ)
* 40-{{{Crossover|180}}} Hz with '''B2 EQ applied''' if you have the current [[L1® Model II Power Stand Firmware Updates]]
 
** If you do not have the current firmware the signal at the Bass Line Out is: 40-{{{Crossover|180}}} Hz Bandpass (that is: NO B1 EQ) <ref>Hilmar-at-Bose [http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/6121039062?r=9441007562#9441007562 intelligent crossover] <br />
If one or two {{B1}}s detected (or resistors used across NL4 2+ / 2- pins to emulate detection)
A) When there are no bass sources attached, lower the crossover and try to get as much bass out of the L1 as is reasonably feasible (110 Hz) in this case<br />
B) If there are bass sources bring the crossover up to 180 Hz (where the L1 starts to get really efficient) AND adjust the bass gain so that the overall spectral balance is maintained no matter how many bass sources are attached.
</ref>
* The system Crossover for the Cylindrical Radiator&reg;s is {{{Crossover|180}}} Hz
If one or two {{B1}}s is detected or emulated using resistors across NL4 2+ / 2- pins  
* 40-{{{Crossover|180}}} Hz with different EQ curves
* 40-{{{Crossover|180}}} Hz with different EQ curves
* The system Crossover for the Cylindrical Radiator&reg;s is {{{Crossover|180}}} Hz


For details on how to do this see: [[Activating B1 EQ Curves]] and [[Using a Different Sub]]
For details on how to do this see: [[Activating B1 EQ Curves]] and [[Using a Different Sub]]
<!-- </strike> -->
<section end=Bass Module Output />
<section end=Bass Module Output />
; Note &mdash;  Operation of the B2 with the Model I/Classic is only supported with the B2 Bass Level Switch set to '''Normal'''.
: See: [[Is the B2 Bass Module Compatible with the L1® Classic or Model I]]
=== Bass Module Output (powered output) ===
For the sake of those attaching third party passive speakers (an unsupported application), the output characteristics are the same as for the the B2 Bass Module (section immediately above).


<!-- not required - can be included separately in Model II Bass Line Out version
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Hilmar
Hilmar
[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/6121039062?r=6031049362#6031049362 Source: Hilmar-at-Bose]
[http://bose.infopop.cc/eve/forums/a/tpc/f/3976055944/m/6121039062?r=6031049362#6031049362 Source: Hilmar-at-Bose]
-->
<!--
[http://bose.infopop.cc/eve/forums/a/tpc/f/1506041054/m/717103866?r=396109476#396109476 Hilmar talks about the crossvover]
If you don't plug in a B1 and connect a powered sub to the bass line out, the cross over will be at 180 Hz and the "Bass Line Out" will deliver a flat 40Hz to 180 Hz signal. The 110 Hz is only used when there is no B1 AND nothing connected to the "Bass Line Out". In this case we assume that the L1s have to provide full bandwidth to the besy of their ability.
The only way to find out whether 4 B1s or 1 SRS1500 is louder is to put them up side by side and measure them (which we haven't done yet). MAX SPL specifications are notoriously unreliable and depend heavily on the exact measurement method so unfortunately we can't use them to compare. My guess is that given size and weight the SRS1500 should be a little louder than 4 B1 bass modules.
Hope that helps
Hilmar
-->
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