| Content | 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 | 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 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)
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- Bipolar arrays evenly disperse sound effects over a broad area
- Dual 1" pure aluminum dome tweeters produce pristine highs
- High dynamic impact with a pair of 3.5" cast basket drivers and two 3.5" pressure-coupled Low Bass radiators
- Integrated dense wood enclosures provide easy installation and consistent high performance
In-Ceiling Or In-Wall, They’re Incredible
The Definitive Technology Architectural Speaker line delivers high performance sound while remaining practically invisible. Intended for use in custom home theaters of the highest quality, UIW RSS III speakers feature non-resonant medite cabinets, producing the tightest bass, clearest midrange and an ideal combination of direct and ambient sound. The result is uniquely immersive surround performance that completely envelops listeners in an expansive, 360-degree sound stage.
Overall
Accessories
- Included Accessories
- (1) Wall Mounting Template
- (1) Paint Mask
- (1) Paintable Grille
- (1) Self Adhering Foam Gasket
Warranty
- Cabinet Warranty5 years
- Drivers Warranty5 years
Shipping Cartons
- Carton 113.5" (34.29 cm) h x 13.5" (34.29 cm) w x 7.25" (18.42 cm) d - 9 lbs (4.08 kg)
In-Wall Speaker
- Qty Included1
- Availability US
- Driver Complement
- (2) 1" (2.54 cm) d (Round) - Tweeter
- (2) 3.5" (8.89 cm) d (Round) - Mid/Woofer
- (2) 3.5" (8.89 cm) d (Round) - Bass Radiator
- Grille Dimensions11" (27.94 cm) h x 9.44" (23.98 cm) w
In-Wall Mount
- ShapeRectangle
- Dimensions9.88" (25.1 cm) h x 8.31" (21.11 cm) w
In-Ceiling Mount
- ShapeRectangle
- Dimensions9.88" (25.1 cm) h x 8.31" (21.11 cm) w
Inputs
- Audio Inputs
- Speaker Inputs(1) Pair of Heavy Duty, Spring Loaded
Audio Quality
- Total Frequency Response40 Hz → 30,000 Hz
- Nominal Impedance Range8 ohms → 4 ohms
- Max Sensitivity (1 watt @ 1 meter)92 dB
Crossover
- A/V Receiver Crossover SettingsSmall (120 Hz)
External Amplifier
- Recommended Amplifier Power Per Channel10 watts → 300 watts
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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 (8128):
Component: 200 mm (8 in) Full-Range
Frequency Range (-10 dB): 50 Hz – 16 kHz
Coverage: 90° conical
Sensitivity (2.83V@ 1m): 97 dB (1 kHz - 8 kHz)
Termination: Bare Wire
Nominal Driver Impedance: 8 ohms
Driver Power Capacity: 25 W
70V/100V Transformer Taps: 6 W, 3 W, 1.5 W, (0.75 W at 70 V only)
Dimensions (Diameter x Depth): 287 mm (11.3 in) diameter round baffle x 104 mm (4.1 in)
depth from back of baffle
Cutout Dimension: 260 mm diameter (10.1 in)
Net Weight: 1.4 kg (3.0 lb)
Included Accessories: Sculpted Grille
Optional Accessories: MTC-8128C C-ring
MTC-RAIL tile rails
Plenum Usage: Not intended for use in return air plenums
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Driver Complement
Mid/Woofer 1 - 6-1/2" Diameter (16.51cm)
Dynamic Balance polymer composite cone driver
Tweeter 1 - 3/4" Diameter (1.91cm)
Silk Dome Tweeter
Electrical
Overall Frequency Response 40Hz-20kHz
Lower -3dB Limit 60Hz
Upper -3dB Limit 20kHZ
Nominal Impedance 8 ohms
Recommended Amplifier Power 20-100 w/channel
Efficiency 89 dB
Dimensions
Overall Diameter 9-5/16“(23.65cm)
Cut-out Diameter 8-3/16“(20.80cm)
Mounting Depth
(assumes 1/2" [12.7mm] wall material) 3-3/8" (8.57cm)
Overall Depth 3-7/8" (9.84cm)
Shipping/Other
Shipped As each
Product Weight 3.25 lbs. (1.47kgs) each
Total Shipping Weight 5.00 lbs. (2.27kgs)
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