Difference between revisions of "Template:Bass Line Out"

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Most of the information here was originally written for the {{Classic}} and {{Model I}}. I have verified with MikeZ-at-Bose, that this is applicable to the {{Model II}}. The exception is that the crossover point is 200 Hz. The Classic/Model I crossover is 180 Hz. There is a little more detail about the {{Model II}} crossover at the end.  [[User:ST|ST]]
 
Most of the information here was originally written for the {{Classic}} and {{Model I}}. I have verified with MikeZ-at-Bose, that this is applicable to the {{Model II}}. The exception is that the crossover point is 200 Hz. The Classic/Model I crossover is 180 Hz. There is a little more detail about the {{Model II}} crossover at the end.  [[User:ST|ST]]
 
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<td valign="top">[[Image:ModelIIBassOutputs.png|Model II Bass Outputs]]
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<td class="toc" valign="top">[[Image:ModelIIBassOutputs.png|Model II Bass Outputs]]
  
 
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=== No cable plugged into the Bass Line out ===
 
=== No cable plugged into the Bass Line out ===
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<th>B1s connected</th>
 
<th>B1s connected</th>
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<td style="valign;top">1</td>
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<td style="valign;top">40Hz-{{{Crossover|180}}}Hz</td>
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<td class="b1">40Hz-{{{Crossover|180}}}Hz</td>
<td style="valign;top">B1 specific EQ</td>
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<td class="b1">B1 specific EQ</td>
<td style="valign;top">Reference Level</td>
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<td class="b1">Reference Level</td>
 
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<td>40Hz-{{{Crossover|180}}}Hz</td>
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<td class="b1">40Hz-{{{Crossover|180}}}Hz</td>
<td>B1 specific EQ</td>
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<td class="b1">B1 specific EQ</td>
<td>Reference Level -6 dB</td>
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<td class="b1">Reference Level -6 dB</td>
 
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=== Cable connected to the Bass Line Out ===
 
=== Cable connected to the Bass Line Out ===
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<th>B1s connected</th>
 
<th>B1s connected</th>
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<td style="valign;top">Flat EQ</td>
 
<td style="valign;top">Flat EQ</td>
 
<td style="valign;top">Reference Level - 6 dB</td>
 
<td style="valign;top">Reference Level - 6 dB</td>
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* If there is 0 x B1 connected to B1 Bass Module output on the PS1: flat EQ on Bass Line Out, bass signal gain = REFERENCE LEVEL - 6 dB
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* If there is 1 x B1 connected to B1 Bass Module output on the PS1: B1 EQ on Bass Line Out and B1 Out, bass signal gain = REFERENCE LEVEL - 6 dB
 
** If you are using  a {{A1 EB}} this is a total of 3 B1s (2 on the A1 and 1 on the PS1)
 
* If there are 2 x B1 connected to B1 Bass Module output on the PS1: B1 EQ on Bass Line Out and B1 Out, bass signal gain = REFERENCE LEVEL - 12 dB
 
** If you are using a {{A1 EB}} this is a total of 4 B1s
 
  
 
=== With More Than 4 B1s ===
 
=== With More Than 4 B1s ===

Revision as of 18:45, 14 January 2009

Usage:

 {{Bass Output for Experts
 |icons={{Classic icon}} (or other icons as required)
 |Crossover=180 (or 200 for Model II)
 }}


Most of the information here was originally written for the L1 Classic and L1 Model I. I have verified with MikeZ-at-Bose, that this is applicable to the L1 Model II. The exception is that the crossover point is 200 Hz. The Classic/Model I crossover is 180 Hz. There is a little more detail about the L1 Model II crossover at the end. ST

Model II Bass Outputs


Bass Line Out and B1 behavior

Model I right side Input/Output panel

</includeonly>

The behavior of the bass line out and B1 Bass Module outputs on the L1 Classic and L1 Model I are based on the philosophy that adding B1 Bass Modules should give the user more dynamic range (can play louder) but should not alter the tone of the instrument, including tone adjustments made using the R1 Remote, the T1 ToneMatch Audio Engine or other tone-shaping equipment.

This philosophy is notably different from other manufacturers, who take the approach that it's okay (or desirable) that adding more bass speakers causes the instrument tone to become "bassier".

With this philosophy in mind, here is how the bass line out and B1 outputs work.

No cable plugged into the Bass Line out

B1s connected OutputEQ Bass Signal Gain
1 40Hz-180Hz B1 specific EQ Reference Level
2 40Hz-180Hz B1 specific EQ Reference Level -6 dB

Why? Because when you add a second B1, if you did not change the signal strength you would get 6 dB more bass relative to the mids and highs. This would alter the tone of the instrument. To keep the tone the same, while still allowing the more dynamic range (system can play louder by 6 dB) the signal level must be reduced by 6 dB.

Cable connected to the Bass Line Out

B1s connected OutputEQ Bass Signal Gain Notes
0 40Hz-180Hz Flat EQ Reference Level - 6 dB
1 40Hz-180Hz B1 specific EQ on Bass Line Out and B1 Out Reference Level - 6 dB If you are using a PackLite® power amplifier model A1 Extended Bass Package this is a total of 3 B1s (2 on the A1 and 1 on the Power Stand)
2 40Hz-180Hz B1 specific EQ on Bass Line Out and B1 Out Reference Level - 6 dB If you are using a PackLite® power amplifier model A1 Extended Bass Package this is a total of 4 B1s (2 on the A1 and 4 on the Power Stand)



With More Than 4 B1s

The PS1 does not measure the exact number of PackLite® power amplifier model A1s, so there is a slight error if you use anything but 1,2, or 4 B1s.

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

Details for Experts

Bass Output for Experts / Classic / Model I