| Content | Key Features:
Clear, High-Fidelity Performance
6W Transformer for use on 70V / 100V
Distributed Lines
Dog-Ears for Easy Blind Mount
Installations
High Sensitivity for Maximum Power
Efficiency
Open-back design for applications not
requiring an in-ceiling backcan.
Specifications (8124):
Component: 100 mm (4 in) Full-Range
Frequency Range (-10 dB): 60 Hz – 18 kHz
Coverage: 130° conical
Sensitivity (2.83V@ 1m): 93 dB (1 kHz - 8 kHz)
Termination: Bare Wire
Nominal Driver Impedance: 8 ohms
Driver Power Capacity: 20 W
70V/100V Transformer Taps: 6 W, 3 W, 1.5 W, (0.75 W at 70 V only)
Dimensions (Diameter x Depth): 206 mm (8.1 in) diameter round baffle x 89 mm (3.75 in)
depth from back of baffle
Cutout Dimension: 175 mm diameter (6.9 in)
Net Weight: 1.2 kg (2.5 lb)
Included Accessories: Sculpted Grille
Optional Accessories: MTC-8124C C-ring
MTC-RAIL tile rails
Plenum Usage: Not intended for use in return air plenums |
* Frequency Response (-10 dB)1: 150 Hz - 20 kHz
* Frequency Range (±3 dB)1: 200 Hz - 17 kHz
* Power Capacity:
o 50 Watts Continuous Program Power (2 hrs)
o 25 Watts Continuous Pink Noise (2 hrs)
o 30 Watts Continuous Program Power (100 hrs)
o 15 Watts Continuous Pink Noise (100 hrs)
* Nominal Sensitivity:
o 87 dB (4.0 V, 1 W)
o 84 dB (2.83 V)
* Nominal Coverage Angle3: 140° (+25°/-50°)
* Directivity (Q): 4.7
* Directivity Index (DI): 6.2 dB
* Rated Maximum SPL @ 1m: 97 dB continuous pink noise, 103 dB peak
* Rated Impedance: 16 ohms (no transformer taps)
* Recommended High-Pass Frequency: 150 Hz
Transducer
* Driver: 60 mm (2.5 in), polypropylene-coated paper with pure butyl rubber surround, 20 mm (¾ in) copper clad aluminum voice coil with vented Nomex® coil-former.
Enclosure
* Enclosure Material: High impact polystyrene
* Grille: Zinc-plated steel grille with powder-coat finish, foam backing (removable for painting)
* Environmental: Exceeds Mil Spec 810 for humidity, salt spray, temperature & UV. IP44 capability per IEC 529 - splashproof rating.
* Termination: Two removable locking euro-block 2-pin connectors with screwdown terminals for bare wire. Connectors paralleled for input and loop-thru. Max. wire 12 AWG (2.5 mm2). Rubber terminal covers included.
* Suspension: Two identical suspension systems (one as main suspension cable and the other as safety cable), each consisting of 4.5 m (15 ft) long 2 mm (0.077 in) high-tensile galvanized-steel wire rope suspension cable with spring-clips for clipping onto the loudspeaker bracket and Gripple™ brand adjustable-height cable fasteners for infinitely adjustable height. Cables have SWL rating of 45 kg (99 lb).
* Safety Agency Ratings: Speaker listed per UL1480, transformer registered per UL1876. In accordance with IEC60849/EN60849. Suspension system and Gripple®-brand cable fastener listed per UL1598 and UL2239, TUV, and CSA Class 3426-01 & Class 3426-81.
* Dimensions: 128 mm (5.1 in) diameter x 121 mm (4.8 in) height to top of cabinet. 141 mm (5.6 in) to top of suspension bracket.
* Net Weight (ea): 0.7 kg (1.5 lbs)
* Shipping Weight (pair): 2.0 kg (4.3 lbs)
* Included Accessories: Two suspension cable systems (see "Suspension“, above), two 2-pin removable locking euro-block connectors, two rubber covers for euro-block connectors.
|
Driver Complement
Mid/Woofer 1 - 6-1/2" Diameter (16.51cm)
Dynamic Balance polymer composite cone driver
Tweeter 2 - 3/4" Diameter (1.91cm)
Silk Dome Tweeters
Electrical
Overall Frequency Response 40Hz-20kHz
Lower -3dB Limit 55Hz
Upper -3dB Limit 20kHZ
Nominal Impedance 8 ohms
Recommended Amplifier Power 20 - 100 w/channel
Efficiency 89 dB
Dimensions
Overall Diameter 8-15/16“(22.70cm)
Cut-out Diameter 7-5/8“(19.37cm)
Mounting Depth
(assumes 1/2" [12.7mm] wall material) 2-5/8" (6.67cm)
Overall Depth 3-1/8" (7.94cm)
Shipping/Other
Shipped As each
Product Weight 2.55 lbs. (1.16kgs) each
Total Shipping Weight 3.00 lbs. (1.36kgs)
Speaker Warranty Lifetime Warranty
|
- Frequency Range (-10 dB) : 34 Hz – 18 kHz In half space (in ceiling)
- Frequency Response (±3 dB) : 47 Hz – 16 kHz In half space (in ceiling)
- Coverage Pattern : 90° conical, broadband (Avg 1k - 16kHz) Average 1 kHz to 10 kHz
- Directivity Factor (Q) : 8.7 (1k - 16kHz)
- Directivity Index (DI) : 9.4 dB (1k - 16kHz)
- Long-Term System : 250 W (1000 W peak), 2 hrs
- Power Rating, IEC3 : 150 W (600 W peak), 100 hrs
- Sensitivity (2.83V@ 1m) : 94 dB measured half-space, 99 dB computed for competitive comparison
- Maximum SPL6 : 118 dB cont ave (124 dB peak)
- Crossover Network : 1.8 kHz, 3rd order (18 dB/oct) high-pass plus conjugate to HF, 2nd order low-pass to LF.
- Nominal Impedance : 8 ohms
- Transducer Low Frequency Driver : Kevlar reinforced cone, 50 mm (2 in) voice coil.
- Transducer High Frequency Driver : JBL 2412H-1 compression driver, 25 mm (1 in) voice coil.
- Input Connector : Removable locking connector with screw-down terminals. Max wire 12 AWG (2.5 mm2)
- Dimensions (H x W x D) : 366 x 366 mm (14.4 x 14.4 in) square baffle x depth from back of baffle of 223 mm (8.8 in) on 321C
- Net Weight : 16.0 lbs. (7.3 kg)
- Shipping Weight : 19.4 lbs. (8.8 kg)
| JBL's Commercial Series Ceiling Speakers provide excellent performance for paging and background music applications. High sensitivity across the product line provides maximum sound level, even at low tap settings
Features :
* High 90 dB sensitivity
* 5 Watt multi-tap transformer for 100V, 70V and 25V distributed lines
* Very wide 175° coverage
* Fits CSS-BB4 backcan | Recommended Usage In-Ceiling Front / Surround Speakers
Type 2-way coaxial
Woofers 6 1/2” PP (polypropylene) mica cone
Tweeters 1” fluid-cooled soft dome
Swivel Tweeter and Midrange Driver (Tweeters)
Paintable Grill with Protective Cover Included Yes
Frequency Response 65 Hz – 28 kHz
Sensitivity 90 dB (2.83 V, 1 m)
Input Power (Maximum / Nominal) 110W / 40W
Impedance 8 Ohms
Product Dimensions (W x H x D) 9-1/2“x 4-5/8“
Mounting Depth 4-1/4”
Product Weight (lbs. each) 3.3 |
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