Detail 01
0 dB transmission loss (±1 dB)
States the unit's specified transmission loss.
Product detailSKU #1500000253408
SennheiserAC-41 Active Antenna Combiner for Evolution Wireless G4 Systems
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Independent shopping perspective
The Korena take
The AC 41-US consolidates as many as four in-ear monitor transmitters onto one antenna for a cleaner wireless-monitor setup. Designed for Sennheiser ew G4 and G3 systems, it includes four BNC cables and the NT 3-1 tabletop power supply. That supply sends power to SR IEM G4 transmitters through the BNC runs, removing the need for a separate power supply for each connected transmitter. It is built around organized multi-transmitter IEM routing.
Strong match
Who this is for
- Multi-transmitter in-ear monitor rigs that need to share one antenna.
- Stage setups where four transmitter BNC connections need consolidated power routing.
Consider the trade-offs
When to look elsewhere
- Systems requiring more than four in-ear monitor transmitters on one combiner.
- RF inputs above the specified 30 mW maximum per input.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
50-ohm impedance
States the unit's specified impedance.
Detail 03
8.35 x 6.61 x 1.69 inches; 3.24 lb.
Provides the listed physical size and weight.
Final check
Know before you order
- 01Confirm your transmitters are part of the Sennheiser ew G4 or G3 wireless system family.
- 02Each RF input has a maximum rating of 30 mW.
- 03The specified frequency range is 470–870 MHz and 470–608 MHz.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How many transmitters can the AC 41-US combine?
It combines up to four in-ear monitor transmitters through a single antenna.
02What is included for transmitter connections and power?
It includes four BNC cables and the NT 3-1 tabletop power supply.
03How are SR IEM G4 transmitters powered?
The NT 3-1 supply delivers power to them over the BNC cables.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Frequency Range
- 470–870MHz, 470–608MHz
- Impedance
- 50 ohms
3 detailsConnections & power
- Power Consumption Max
- 3.4 A (with connected transmitters)
- Power Supply
- 13.8VDC (with tabletop power supply unit NT 3-1), 11.4VDC (protected against reverse supply), 350 mA
- Rf Input Max
- 30mW per input
2 detailsSize & weight
- Dimensions Approx
- 8.35 inch x 6.61 inch x 1.69 inch
- Weight Approx
- 3.24 lb.
4 detailsOther
- Operating Temperature
- 14°F to 131°F
- Operating Relative Humidity
- 5–95%
- Transmission Loss
- 0dB (±1dB)
- Storage Temperature
- -4 °F to 158 °F
