MTC-300BB8 vs MTC-300T150 — Compare
JBL MTC-300BB8 Backbox For 8" Control 300 Series Drivers vs JBL MTC-300T150 150W Transformer For Control 300 Series
The MTC-300BB8 is an acoustic enclosure that forms the physical mounting foundation for 8-inch drivers in ceiling installations, while the MTC-300T150 is an electrical transformer that steps down voltage for distributed audio systems. Choose the backbox if you are installing in-ceiling speakers; choose the transformer if you need to integrate Control 300 drivers into 70V or 100V commercial audio lines.
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JBL MTC-300BB8 Backbox For 8" Control 300 Series Drivers
JBL MTC-300T150 150W Transformer For Control 300 Series
Specs side by side
| JBL MTC-300BB8 Backbox For 8" Control 300 Series Drivers | JBL MTC-300T150 150W Transformer For Control 300 Series | |
|---|---|---|
| Price | $178.28 | $172.45 |
| Brand | JBL | JBL |
| Condition | New | New |
Why choose JBL MTC-300BB8 Backbox For 8" Control 300 Series Drivers
- ✓ Professionally engineered acoustic design with resonance elimination and extended bass response
- ✓ Meets multiple safety certifications (UL-2043, UL-1480, NFPA90, NFPA70A) for plenum and air-handling spaces
- ✓ Compact 0.71 cubic foot internal volume fits standard drop-ceiling grids with 310 mm cutout
- ✓ Heavy 16 gauge metal and 12 mm MDF construction ensures durability and vibration control
Why choose JBL MTC-300T150 150W Transformer For Control 300 Series
- ✓ Handles both 70V and 100V distributed audio lines for system flexibility
- ✓ 150-watt power rating provides adequate capacity for commercial installations
- ✓ Mounts cleanly inside the back box away from the driver assembly
- ✓ UL listed and designed specifically for non-T version Control 300 loudspeakers
Frequently asked questions
Can I use both products together?
The MTC-300T150 description specifies it mounts inside the MTC-300BB12 back box, not the MTC-300BB8. These are different back box models, so compatibility is not guaranteed between the transformer and the 8-inch backbox listed here.
What skill level do these products require?
Both are professional-grade components intended for commercial integrators and institutional installers rather than consumer or DIY use. The backbox requires proper ceiling cutout and integration; the transformer requires understanding of 70V/100V distributed audio systems.
Are these suitable for live sound or portable applications?
Neither product is designed for portable or live sound use. The backbox is specifically for permanent suspended-ceiling installations, and the transformer is for fixed commercial distributed audio systems.
What certifications matter for my installation?
The MTC-300BB8 holds UL-2043, UL-1480, NFPA90, and NFPA70A certifications, making it safe for plenums and air-handling spaces—critical for many commercial codes. The MTC-300T150 is UL listed but does not carry plenum certifications.