JBL 8128 Ceiling Speaker 8 Inch 6 Watts

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

Audiophile Performance, Cutting-Edge Stealth Design

Stacking the woofer behind the driver unit is an innovation so extreme you wonʼt believe the performance that results! Full-size speaker dynamics and a small-diameter cut-out built-in that virtually disappears into your decor. The Vanishing Series puts high performance stealth audio at your fingertips.

Vanishing 700-LS Features:

Extra deep well design with a Cassini oval woofer mounted above and behind the main driver & tweeter array, for broad coverage and dynamic full-range audio performance in a built-in.

Vanishing® Series built-in speakers feature our exclusive wafer-thin Sheer-Grille™, a magnetically-secured grille that protrudes only 7mm from its surroundings. Sheer-Grilles have nearly transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms.

Painted to match your décor, Vanishing Series built-in speakers are virtually indistinguishable from their surroundings.

Enhanced, reengineered ring radiator tweeters extend top-end response for incredible details and realistic imaging.

Reflective surfaces in rooms can make sound brighter and cause image distortion. Engaging the Vanishing reflective room compensation feature (by selecting the low setting) lowers the tweeter level to compensate for reflective surfaces. Vanishing reflective room compensation is a custom audio control that cuts the level only in the 4-5kHz range, exactly where reflectivity destroys sound quality. Outside this narrow 1kHz band, the tweeter retains its detailed and accurate high frequency response, for no loss of realistic musical details.

Vanishing Series LS speakers are timbre-matched to Polk LSi speakers to insure utterly seamless blending from speaker to speaker in systems that combine traditional and built-in speakers.

If positioning limitations demand that your loudspeakers be installed closer than 2 feet from side walls, the proximity of the surface can result in a response bump between 50 and 200Hz. This can create boomy sound. The Vanishing wall distance toggle switch is a custom audio control that adjusts the crossover to flatten response and tune out boominess, without sacrificing deep bass response, for more lifelike sound and more flexible placement.

Dual bandpass bass ports are highly efficient in small enclosures, and smoothly funnels the angled wooferʼs low frequencies down around the driver array, eliminating "chuffing,” so your small, practically invisible in-ceiling speakers achieve superior full-range blending and broad coverage with surprisingly deep bass.

Easy one-cut, drop-in installation puts built-in audio within reach, with Perfect Fit templates, a precision flange, and (available) pre-construction brackets; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system.

All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industryʼs most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime. 

Tweeter ¾" ring radiator x 1
Midrange ½" APP driver x 2
Mid/Woofer 5“x7" mineral filled polypro. x 1
Frequency Response 32 Hz - 27 kHz
Nominal Impedance 8 Ohms
Rec. Amp Power 10-150 W/ Channel
Efficiency 90 dB
Dimensions(cm) 20.64 x 21.59

Driver Complement

Tweeter
Quantity 1
Diameter 3/4" (1.91cm)
Type Ring radiator

Midrange

Quantity 1
Diameter 2 1/2" (6.35cm)
Type Dynamic Balance driver with aerated polypropylene cone

Subwoofer

Quantity 1
Diameter 7" (17.78cm)
Type Dynamic Balance woofer with mineral-filled polypropylene cone
Electrical

Total Frequency Response 32Hz-33kHz
Upper -3dB Limit 29 kHz
Lower -3dB Limit 45 Hz
Nominal Impedance 8 ohms
Efficiency 90 dB
Recommended Amplifier Power 10-150 watts per channel
Inputs Gold-plated spring-loaded posts
Dimensions

Cut-Out Diameter 6 1/2" (16.51cm)
Overall Diameter 8 1/8" (20.64cm)
Mounting Depth (includes 1/2" drywall) 8" (20.32cm)
Pre-Construction Bracket PB SC50
Overall Depth 8 1/2" (21.59cm)
Shipping

Unit of Measure each
Total Shipping Weight 8 pounds
Warranty

Speaker Warranty Lifetime 

Full range compact ceiling speakers. Low distortion and a smooth, natural frequency response make the Control 24C Micro ideal for medium volume business music systems as well as for the medium to low SPL segments of larger or louder systems.

Specifications:

• 85 Hz to 20 kHz frequency range
• 30 watts continuous program power (15W pink noise)capacity
• 86 dB sensitivity (1W/1m)
• Shallow steel back-can (only 4 in deep)

1 x 6 ½ ¨ Mineral Filed Polymer Cone
2 x ¾ ¨ Soft Dome Tweeter
Amplifier Power 20-100 W/ch
Impedance 8 Ohms
Sensitivity 89dB
Dimensions (cm) 22 x 7
One Speaker with Dual Inputs