Electronics / Speakers & Soundbars
Majorcom PSUB 120T Ceiling Subwoofer
Quick guide for the Majorcom PSUB 120T ceiling subwoofer. Learn about installation, power settings, technical specifications, and mounting requirements.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The Majorcom PSUB 120T is a 120W ceiling subwoofer designed for high-quality sound installations. It features a 200mm high-performance driver and is protected by an IP21C rating. Key operational features include selectable power tappings for 100V line systems and an optional 4Ω low-impedance mode, both accessible from the front of the speaker.
Installation
The speaker utilizes a screw mounting system for installation. Ensure the mounting surface is suitable for the weight of the unit (6.4kg). The required ceiling cut-out diameter is 302mm.
Settings and operation
The PSUB 120T allows for flexible configuration to suit different audio environments:
- Power Tappings: For 100V line operation, you can select between 120W, 60W, 30W, or 15W settings.
- Impedance: The unit supports 100V line operation or a low-impedance 4Ω mode.
- Phase Switch: A phase switch (180°) is located at the front of the speaker to adjust sound alignment.
- Crossover: The crossover frequency is fixed at 135Hz.
Technical specifications
General:
- Nominal Power: 120W
- Bandwidth: 32 - 280Hz
- Sensitivity (1W/1m): 87dB
- SPL MAX 1m: 107.8dB
- Operating Temperature: -10°C to +55°C
- Protection Index: IP21C
- Dimensions: Ø 319 x P 250 mm
- Weight: 6.4kg
Manufacturer information
MAJORCOM
Practical help
Common problems
Incorrect sound output or volume
Verify that the power tapping (120/60/30/15W) is correctly set on the front of the speaker for your 100V line system, or ensure the 4Ω mode is selected if using a low-impedance amplifier.
Phase issues
If the bass response seems weak or out of sync with other speakers, toggle the 180° phase switch located on the front of the unit.
Before use
- Ensure the ceiling cut-out diameter is exactly 302mm.
- Verify the mounting surface can support the 6.4kg weight of the subwoofer.
- Check that the amplifier output matches the selected power tapping (120/60/30/15W) or impedance (4Ω).
- Confirm the operating environment is within the -10°C to +55°C temperature range.
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Specs in practice
- 100V Line Power Tappings
- Allows the speaker to be used in distributed audio systems at 120W, 60W, 30W, or 15W.
- Ceiling Cut-out
- The diameter of the hole required in the ceiling for installation (302mm).
Images and diagrams
- The dimension drawing shows the outer diameter (319mm) and the depth (250mm) of the unit.
- The bandwidth graph illustrates the frequency response, showing the peak performance range between 32Hz and 280Hz.
Model compatibility
- Compatible with 100V line systems.
- Compatible with 4Ω low-impedance amplifiers.
Manual page author
Emily Carter
User documentation editor