SPECIFICATIONS

Control 328C/CT

 

Frequency Range (-10 dB)1:

45 Hz – 18 kHz

Frequency Response (±3 dB)1:

60 Hz – 16 kHz

Coverage Pattern2:

120º conical, broadband (Avg 1k - 16kHz)

Long-Term System Power Rating, IEC3:

250 W (1600 W peak), 2 hrs

 

150 W (1000 W peak), 100 hrs

Sensitivity (2.83V@ 1m):

93 dB4 measured half-space

Nominal Impedance :

8 ohms (328C)

Transformer Taps :

100V: 68W, 34W & 17W (plus 8.5W at 70V)

Transducers :

8” woofer with Kevlar reinforced cone, 1” exit magnet compression driver

Input Connector :

Removable locking connector with screw-down terminals.

Safety Agency Rating :

Suitable for use in air handling spaces, per U.L.-2043, U.L.-1480, NFPA90 & NFPA70A.

Net Weight :

328C: 4.5 kg (10.0 lbs) 328CT: 5.4 kg (12.0 lbs)

Dimensions (Diameter x D) :

328C: Ø 305 mm (12 in) x 160 mm (6.3 in)

 

328CT: Ø 305 mm (12 in) x 218 mm (8.6 in)

Control 321C/CT

 

Frequency Range (-10 dB)1:

34 Hz – 18 kHz

Frequency Response (±3 dB)1:

47 Hz – 16 kHz

Coverage Pattern2:

90º conical, broadband (Avg 1k - 16kHz)

Long-Term System Power Rating, IEC3:

250 W (1600 W peak), 2 hrs

 

200 W (1000 W peak), 100 hrs

Sensitivity (2.83V@ 1m):

94 dB4 measured half-space

Nominal Impedance :

8 ohms (321C)

Transformer Taps :

100V: 68W, 34W & 17W (plus 8.5W at 70V)

Transducers :

12” woofer with Kevlar reinforced cone, 1” exit magnet compression driver

Input Connector :

Removable locking connector with screw-down terminals.

Safety Agency Rating :

Suitable for use in air handling spaces, per U.L.-2043, U.L.-1480, NFPA90 & NFPA70A.

Net Weight :

321C: 7.3 kg (16.0 lbs) 321CT: 8.2 kg (18.0 lbs)

Dimensions (H x W x D) :

321C: 366 x 366 x 223 mm (14.4 x 14.4 x 8.8 in) depth from back of baffle

 

321CT: 366 x 366 x 240 mm (14.4 x 14.4 x 9.5 in) depth from back of baffle

LISTED

General Signaling

Equipment

15CM

Control 322C/CT

 

Frequency Range (-10 dB)1:

32 Hz – 20 kHz

Frequency Response (±3 dB)1:

48 Hz – 19 kHz

Coverage Pattern2:

90º conical, broadband (Avg 1k - 16kHz)

Long-Term System Power Rating, IEC3:

400 W (1600 W peak), 2 hrs

 

250 W (1000 W peak), 100 hrs

Sensitivity (2.83V@ 1m):

95 dB4 measured half-space

Nominal Impedance :

8 ohms (322C)

Transformer Taps :

100V: 100W, 50W & 25W (plus 12.5W at 70V)

Transducers :

12” woofer with Kevlar reinforced cone, 1” exit neodymium-magnet compression driver

Input Connector :

Removable locking connector with screw-down terminals.

Safety Agency Rating :

Suitable for use in air handling spaces, per U.L.-2043, U.L.-1480, NFPA90 & NFPA70A.

Net Weight :

322C: 9.1 kg (20.0 lbs) 322CT: 10.0 kg (22.0 lbs)

Dimensions (H x W x D) :

322C: 366 x 366 x 223 mm (14.4 x 14.4 x 8.8 in) depth from back of baffle

 

322CT: 366 x 366 x 240 mm (14.4 x 14.4 x 9.5 in) depth from back of baffle

Control 312CS

 

Frequency Range (-10 dB)1:

30 Hz – 4.5 kHz

Frequency Response (±3 dB)1:

34 Hz – 3.5 kHz

Long-Term System Power Rating, IEC5:

400 W (1600 W peak), 2 hrs

 

250 W (1000 W peak), 100 hrs

Sensitivity (2.83V@ 1m):

93 dB4 measured half-space

Nominal Impedance :

8 ohms

Transducers :

12” woofer with Kevlar reinforced cone

Input Connector :

Removable locking connector with screw-down terminals.

Safety Agency Rating :

Suitable for use in air handling spaces, per U.L.-2043, U.L.-1480, NFPA90 & NFPA70A.

Net Weight :

312CS: 7.7 kg (17.0 lbs)

Dimensions (H x W x D) :

312CS: 366 x 366 x 160 mm (14.4 x 14.4 x 6.3 in) depth from back of baffle

1In half space (in ceiling)

2Average 1 kHz to 16 kHz

3IEC standard, full bandwidth pink noise with 6 dB crest factor.

4Measured in half space (in ceiling), ave 100 Hz – 10 kHz.

5AES pink noise, 30 Hz to 300 Hz with 6 dB crest factor.

JBL continually engages in research related to product improvement. Changes introduced into existing products without notice are an expression of that philosophy.

JBL Professional Control 300 Series 11

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JBL 321CT, 328CT, 322CT, 300 Series, 312CS manual Specifications, Listed

312CS, 300 Series, 328C, 322CT, 328CT specifications

JBL, a well-renowned name in the audio industry, has long been associated with innovation and superior sound quality. Among its impressive lineup, the JBL 321C, 321CT, 322C, 328CT, and 322CT stand out for their remarkable features, cutting-edge technologies, and versatile characteristics, ensuring an exceptional listening experience.

The JBL 321C is designed with a sleek, modern aesthetic, making it a stylish addition to any setting. This compact speaker delivers clear and balanced sound, thanks to its advanced driver technology and well-engineered acoustics. The inclusion of a high-frequency driver enhances the overall soundstage, providing crisp highs and detailed mid-range frequencies. This model is perfect for smaller spaces, ensuring that users still experience robust audio performance without overwhelming their environment.

Moving to the JBL 321CT, this variant introduces the convenience of a built-in transformer, making it suitable for commercial installations where efficient power usage is key. Like its counterpart, it boasts exceptional audio fidelity, ensuring that it can easily adapt to various applications, such as retail spaces or hospitality environments. Its reliability and sound quality make it a smart choice for professionals seeking a robust audio solution.

The JBL 322C and 322CT models further enhance this series by incorporating dual-speaker configurations. This design philosophy increases sound dispersion and volume output. With the 322C, users can expect a rich audio experience that fills larger rooms, making it ideal for home theaters and other entertainment spaces. Meanwhile, the 322CT expands functionality with its transformer setup, making it a prime choice for commercial use while delivering excellent sound quality.

Lastly, the JBL 328CT stands as a flagship option in the series. This model combines advanced technologies, such as a powerful woofer and an optimized high-frequency driver, to produce an impressive sound profile. It features an enhanced bass response, making it perfect for music enthusiasts who crave depth in their audio experience. The 328CT is designed for both home and professional environments, offering flexibility without compromising sound fidelity.

All these models emphasize JBL’s commitment to high-quality sound, reliability, and aesthetics. Their ability to deliver clarity across diverse music genres, combined with their versatility for both residential and commercial use, make the 321C, 321CT, 322C, 328CT, and 322CT exceptional choices for anyone looking to enhance their audio experience. Whether in a cozy living room or a bustling public venue, these speakers promise to deliver unparalleled sound quality that embodies the true essence of JBL's audio legacy.