The JBL Control 321C is a passive 12" coaxial ceiling speaker designed for voice amplification and foreground music reproduction in waiting rooms, offices, retail stores, and restaurants. When driven by a low-impedance power amplifier (available separately), this 2-way speaker provides a long-term power capacity of 250W (1000W peak). The Control 321C is equipped with a durable 12" Kevlar-reinforced cone and a titanium-diaphragm compression driver, yielding an extended frequency response of 47 Hz to 16 kHz.

The cone, which also serves as a waveguide, results in reliable 90° broadband coverage while the built-in crossover network ensures proper frequency distribution to the speaker components. A removable locking connector with screw-down terminals ensures simple wiring for the input and loop output.

Passive Design    12" Woofer with Kevlar-Reinforced Cone    High-Frequency Compression Driver    250W Program (1000W Peak) Power Capacity    For Power Amplifiers    47 Hz to 16 kHz Frequency Response    Built-In Crossover Network    90° Broadband Coverage    Removable Locking Input Connector

Coaxial ceiling speaker with pre-attached ported baffle

For use with low-impedance power amplifiers

Long-term power handling of 250W (1000W peak)

Durable 12" Kevlar-reinforced cone serves as a waveguide for high frequencies

Metal throat transitions smoothly to the horn to eliminate high-frequency beaming

High-temperature voice coil

High-frequency driver features a pure titanium diaphragm for high sensitivity and long life, a diamond surround for resonance control, and FerroFluid for increased power handling

Consistent 90° coverage on a broadband basis

Built-in crossover network with 18 dB/octave high-pass filter and 12 dB/octave low-pass filter

Integrated EZRail temporarily holds one side of the speaker baffle in place until the installer can affix the baffle to the backcan with screws

Removable multi-pin locking connector with secure screw-down terminals allows pre-wiring of inputs for easy clip-on convenience during installation

Compatible with MTC-300SG12 grille, and MTC-300BB12 backbox (both available separately)

Related Questions and Answers

Q: 1. Are the clamp and plate Arca Swiss compatible?

A: Yes the clamp and plate are both Arca-Swiss compatible.

Q: 2. Will the Sirui TY-60 plate work as well? If so, will the lock on the baseplate work with that plate?

A: is an arca type plate compatible, it will work.

Q: 3. Does this come with a wrist strap or is it possible to attach a camera wrist strap to it?

A: Yes. The GoPro 3-Way 2.0 (Grip/Arm/Tripod) will include a wrist strap.

Q: 4. Can this head be used on the Manfrotto Advanced Travel with the 494 ballhead?

A: Yes.

Q: 5. Is there an adapter available for smartphones?

A: No, the GoPro 3-Way 2.0 (Grip/Arm/Tripod) will not work with smartphones.

Q: 6. Is this compatible with Sirui T-2005X tripod?

A: Yes, but it was designed for monopods you may want to look at Sirui ball heads.

Q: 7. Using an L bracket, can this head be used for vertical panos?

A: Although it is possible to attach an L-bracket to the Sirui L-20S 2-Way Pan/Tilt Head, it has not been tested as a head for shooting vertical panoramic images. The results may vary in this case.

Q: 8. Can i use it with a canon 500mm f4 is mk 1 lens canon 1d mk iv body 2x extender and sirui p424 monopod?

A: Yes, you can use ir.

Q: 9. The Kirk LP55 arm for Canon is it compatible with Sirui L20S head.

A: Sorry, I am not familiar with the Kirk LP55 arm.

Q: 10. Will the camera point in the proper direction on this head if I have a RRS L bracket attached to the camera?

A: Yes, you can mount an RRS L bracket in the orientation you want on this head.