PS1 Powerstand / Signal Flow: Difference between revisions
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=== Signal Flow === | === Signal Flow === | ||
Q: What happens to my input on Channel 1 or 2 as it flows through the {{PS1}}? | Q: What happens to my input on Channel 1 or 2 as it flows through the {{PS1}}? | ||
A: As provided by Kyle-at-Bose <ref>Kyle-at-Bose [http://bose.infopop.cc/eve/forums?a=tpc&f=3976055944&m=6921014061&r=9701065514#9701065514 in the | |||
A: As provided by Kyle-at-Bose <ref>Kyle-at-Bose [http://bose.infopop.cc/eve/forums?a=tpc&f=3976055944&m=6921014061&r=9701065514#9701065514 Kyle-at-Bose speaks about the PS1 Signal Flow in the Bose® Musicians Community Message Boards]</ref> | |||
# Input Line (¼ inch) or XLR input | # Input Line (¼ inch) or XLR input | ||
# Trim | # Trim | ||
| Line 12: | Line 13: | ||
##{{L1 CR}} and Bass Line-Out if something is inserted in Bass Line-Out | ##{{L1 CR}} and Bass Line-Out if something is inserted in Bass Line-Out | ||
# Master Level | # Master Level | ||
[[Image:PS1signalpath.png]] | |||
=== Preamps === | === Preamps === | ||
Q: Do I get the benefits of the Preamps if I use the ¼ inch inputs on the {{PS1}} Channel 1 or 2 | Q: Do I get the benefits of the Preamps if I use the ¼ inch inputs on the {{PS1}} Channel 1 or 2 | ||
A: Yes. Whether or you use the Input Line (¼ inch) or XLR input the signal flows through the Preamp. | A: Yes. Whether or you use the Input Line (¼ inch) or XLR input the signal flows through the Preamp. | ||
Hilmar-at-Bose <ref>Hilmar-at-Bose [http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/8491032313?r=4771073313#4771073313 in the | |||
Both XLR and ¼ inch input go through the same preamp but they see a little different conditioning before they get there. The XLR | Hilmar-at-Bose provided this:<ref>Hilmar-at-Bose [http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/8491032313?r=4771073313#4771073313 Hilmar-at-Bose speaks about the PS1 Preamps in the Bose® Musicians Community Message Boards]</ref> | ||
Both XLR and ¼ inch input go through the same preamp but they see a little different conditioning before they get there. | |||
* The XLR input is a balanced low impedance input stage with a lot of gain. | |||
* The ¼ inch input is unbalanced, has about 20 dB less overall gain but a very high input impedance. | |||
Q: What is the input impedance of the ¼ inch Channel 1 or Channel 2 Inputs | Q: What is the input impedance of the ¼ inch Channel 1 or Channel 2 Inputs | ||
A: Approximately 1 megOhm. | A: Approximately 1 megOhm. | ||
Here is an illustration that may help. | |||
[[Image:SignalFlow2.gif]] | [[Image:SignalFlow2.gif]] | ||
=== Signal Flow Block Diagrams === | |||
For detailed information about the signal flow see: [http://pro.bose.com/pdf/pro/tech_data/L1/td_l1_m1.pdf Model I Technical Data Sheet] | |||
<noinclude> | |||
====L1 Model 1 Signal Flow Block Diagram ==== | |||
[[File:L1ModelISignalFlowDiagram.png]] | |||
==== L1 Classic Signal Flow Block Diagram==== | |||
[[File:Block Diag A4 revU.jpg|link=https://toonz.ca/bose/wiki/images/a/ab/Block_Diag_A4_revU.pdf]] | |||
</noinclude> | |||
<noinclude> | <noinclude> | ||
---- | ---- | ||
<references/> | <references/> | ||
[[Category: | |||
[[Category:L1® System]] | |||
[[Category:Recording]] | [[Category:Recording]] | ||
[[Category:PS1 Powerstand]] | [[Category:PS1 Powerstand]] | ||
[[Category:Classic]] | |||
</noinclude> | </noinclude> | ||
Latest revision as of 10:41, 26 September 2025
Signal Flow
Q: What happens to my input on Channel 1 or 2 as it flows through the PS1 Power Stand (Classic) / Model I?
A: As provided by Kyle-at-Bose [1]
- Input Line (¼ inch) or XLR input
- Trim
- R1 Remote Channel Level
- Insert Loop
- R1 Remote EQ
- Preset Processing
- Crossover
- L1 Cylindrical Radiator® loudspeaker and B1 Bass Module if B1 is present or
- L1 Cylindrical Radiator® loudspeaker and Bass Line-Out if something is inserted in Bass Line-Out
- Master Level
Preamps
Q: Do I get the benefits of the Preamps if I use the ¼ inch inputs on the PS1 Power Stand (Classic) / Model I Channel 1 or 2
A: Yes. Whether or you use the Input Line (¼ inch) or XLR input the signal flows through the Preamp.
Hilmar-at-Bose provided this:[2]
Both XLR and ¼ inch input go through the same preamp but they see a little different conditioning before they get there.
- The XLR input is a balanced low impedance input stage with a lot of gain.
- The ¼ inch input is unbalanced, has about 20 dB less overall gain but a very high input impedance.
Q: What is the input impedance of the ¼ inch Channel 1 or Channel 2 Inputs
A: Approximately 1 megOhm.
Here is an illustration that may help.
Signal Flow Block Diagrams
For detailed information about the signal flow see: Model I Technical Data Sheet
L1 Model 1 Signal Flow Block Diagram
L1 Classic Signal Flow Block Diagram
