SI35A - Uncategorized Bogen - Free user manual and instructions
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| Product Type | Commercial Audio Amplifier / Mixer Amplifier |
| Model | SI35A |
| Brand | Bogen |
| Power Output (RMS) | 35 Watts |
| Output Configuration | Constant voltage (25V, 70V), and low impedance (4-8 ohms) |
| Number of Inputs | 3 (1 microphone, 2 auxiliary) |
| Input Sensitivity | Mic: 1 mV; Aux: 100 mV |
| Frequency Response | 50 Hz – 20 kHz ±3 dB |
| Total Harmonic Distortion | < 0.5% at rated output |
| Signal-to-Noise Ratio | > 60 dB |
| Dimensions (W x H x D) | 12.2 x 5.2 x 13.5 in (310 x 132 x 343 mm) |
| Weight | 15.4 lbs (7.0 kg) |
| Power Supply | 120 V AC, 60 Hz, 1.2 A |
| Chassis Type | Rack-mountable, 3U height |
| Cooling | Convection cooling, no fan |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Main Functions | Public address, paging, background music; independent volume controls per input; bass and treble tone controls; priority muting |
| Safety Features | Short-circuit and overload protection; thermal protection |
| Maintenance | Wipe with dry cloth; avoid moisture; check connections periodically |
| Cleaning | Use a soft, lint-free cloth; do not use solvents or abrasives |
| Spare Parts and Repairability | Contact Bogen authorized service centers; replaceable fuse and input modules |
| Documentation | User manual available in PDF format |
Frequently Asked Questions - SI35A Bogen
How do I connect a microphone to the SI35A?
Connect a standard dynamic or condenser microphone (with phantom power if needed) to the MIC input using an XLR cable. Ensure the microphone volume control is set low before powering on the amplifier.
What speaker impedance can I use with this amplifier?
You can use speakers with 4 or 8 ohms impedance on the low-impedance output, or connect a 25V/70V constant voltage system using the appropriate output terminal.
How can I adjust the bass and treble?
Use the BASS and TREBLE rotary controls on the front panel. Turn clockwise to boost, counterclockwise to cut.
What should I do if the amplifier does not turn on?
Check that the power cord is plugged into a working outlet. Verify the power switch is on. If still not on, inspect the internal fuse (located near the power input) and replace if blown using a fuse of the same rating.
Can I use the SI35A for outdoor paging?
Yes, but the amplifier itself must be installed indoors or in a weatherproof enclosure. Use weather-rated speakers designed for outdoor use and ensure proper grounding.
How do I mount the amplifier in a rack?
Attach the included rack-mount brackets to the sides of the chassis. Then slide into a standard 19-inch rack and secure with screws. The unit occupies 3 rack units (3U) of space.
What type of maintenance does the SI35A require?
Periodically clean the exterior with a dry cloth. Check all cable connections for tightness. No internal maintenance is needed; if issues arise, contact Bogen technical support.
Is phantom power available for microphones?
Yes, the SI35A provides selectable +24V phantom power for compatible condenser microphones. Activate via the switch near the MIC input.
Can I connect additional amplifiers to this unit?
Yes, use the AUX output to daisy-chain to another amplifier or active subwoofer. The signal level is line-level (100 mV).
How do I reset the amplifier after a protection shutdown?
Turn off the amplifier, disconnect all speakers and inputs, wait 5 minutes, then turn on. If it stays on, reconnect components one at a time to find the fault. Permanent shorts on the output will trigger overload protection.
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USER MANUAL SI35A Bogen
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Product information
Brand : Bogen
Model : SI35A
Category : Uncategorized