AC15-B vs MTC-300BB12 — Compare
JBL AC15 Ultra Compact 2-Way Loudspeaker with 1 x 5.25 LF SINGLE UNIT B-Stock vs JBL MTC-300BB12 Backbox For 12" Control 300 Series Drivers
The JBL AC15 is a portable 2-way active loudspeaker for live sound and PA, while the MTC-300BB12 is a passive backbox enclosure for permanently installed ceiling-mounted speech and background music systems. Choose the AC15 if you need mobility and punch; choose the MTC-300BB12 if you're building a fixed distributed audio system.
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JBL AC15 Ultra Compact 2-Way Loudspeaker with 1 x 5.25 LF SINGLE UNIT B-Stock
JBL MTC-300BB12 Backbox For 12" Control 300 Series Drivers
Specs side by side
| JBL AC15 Ultra Compact 2-Way Loudspeaker with 1 x 5.25 LF SINGLE UNIT B-Stock | JBL MTC-300BB12 Backbox For 12" Control 300 Series Drivers | |
|---|---|---|
| Price | $472.00 | $427.00 |
| Brand | JBL | JBL |
| Condition | Refurbished | New |
Why choose JBL AC15 Ultra Compact 2-Way Loudspeaker with 1 x 5.25 LF SINGLE UNIT B-Stock
- ✓ Fully self-contained portable speaker with built-in crossover and tweeter
- ✓ Compact size and lightweight design for easy transport and venue integration
- ✓ Punchy midrange and crisp highs suited to live performance and content clarity
- ✓ Multiple mounting options and weather-resistant build for touring and outdoor use
Why choose JBL MTC-300BB12 Backbox For 12" Control 300 Series Drivers
- ✓ Purpose-designed enclosure that optimizes ceiling driver performance in permanent installations
- ✓ Heavy metal and MDF construction eliminates cabinet resonance and room-mode artifacts
- ✓ Supports 70V/100V distributed audio systems with integrated transformer mounting
- ✓ Rigid isolation from structural vibration ensures predictable behavior across different venues
Frequently asked questions
Can I use these together?
No. The AC15 is a finished 2-way speaker; the MTC-300BB12 is just an enclosure for an in-ceiling driver. They serve completely different installation types.
Which is better for speech clarity?
The MTC-300BB12 is designed specifically for speech in distributed audio; the AC15 is optimized for live performance and studio work. Both deliver clarity in their intended role.
Is either portable?
Only the AC15. The MTC-300BB12 is a fixed installation enclosure mounted into ceilings and requires a separate in-ceiling driver.
What frequency range does each cover?
The AC15 handles 80–18 kHz (extended reach). The MTC-300BB12 is an enclosure only; its range depends on the 12-inch Control 300 driver you install inside it.