Difference between revisions of "PS1 Powerstand / Signal Flow"
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Both XLR and ¼ inch input go through the same preamp but they see a little different conditioning before they get there. | Both XLR and ¼ inch input go through the same preamp but they see a little different conditioning before they get there. | ||
| − | * The XLR | + | * 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. | * The ¼ inch input is unbalanced, has about 20 dB less overall gain but a very high input impedance. | ||
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[[Image:SignalFlow2.gif]] | [[Image:SignalFlow2.gif]] | ||
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| + | === 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> | ||
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[[Category:Recording]] | [[Category:Recording]] | ||
[[Category:PS1 Powerstand]] | [[Category:PS1 Powerstand]] | ||
| + | [[Category:Classic]] | ||
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</noinclude> | </noinclude> | ||
Latest revision as of 11:41, 26 September 2025
Contents
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
