Definitive Technology DI 4.5R Disappearing 4.5-inch Round In-Ceiling Speaker – Each


Optional Accessories

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Round In-Wall/
In-Ceiling Speaker


Driver Complement

Quantity 1
Diameter 3/4″ (1.91cm)
Type Pivoting aluminum dome; Axially aligned
Mid / Woofer
Quantity 1
Diameter 4 1/2″ (11.43cm)
Type BDSS Midrange Driver
Tweeter/Mid Array
Type Direct Radiating 2 Way Coaxial


Audio Inputs
Speaker Level 1 Pair (Heavy Duty Spring Loaded)
Maximum Sensitivity
1 watt @ 1 Meter 88 dB
Total Frequency Response
Overall 35 Hz – 30 kHz
Nominal Impedance
Compatible with 8 ohm
A/V Receiver Crossover Setting Small (100 Hz)
Power Handling 10 – 150 watts per channel


Cut Out Dimensions
Diameter 4 1/2″ (11.43cm)
Mounting Depth 3 3/8″ (8.57cm)
Internal Clearance Required for Mounting Dogs (add to each side of Cut Out) 7/8″ (2.22cm)
Grille Dimensions
Diameter 5 3/8″ (13.65cm)
Orientation In Wall or In Ceiling
Cabinet Type
Speaker Enclosure Infinite Baffle
Product Weight
Out of Box 2.6 lbs

Additional information

Weight 8 lbs


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