QSC AD-C4T-LP ลำโพงเพดาน 4.5" Two-way low-profile ceiling speaker, 70/100v transformer with 16Ω bypass, 150° conical DMT coverage, includes C-ring and rails for blind mount installation. Priced individually but must be purchased in pairs.

Feature.

• Consistent tonal characteristics across the entire AcousticDesign™ family in both surface or ceiling applications

• DMT (Directivity Matched Transition™) waveguide ensures smooth, uniform frequency response over the coverage area

• Snap-fit magnetic grille

• 3x double stepped, long travel dog-ear blind mount system

• Advanced Intrinsic Correction™ voicings available via Q-SYS™ networked audio processing platforms, including CXD amplifiers

• Low-saturation and low-loss 70/100V transformers with 16Ω bypass

• Blemish-free removable logo

• Removable conduit cover plate, also available as accessory for pre-install wiring

• UL1480 and UL2043 certified EN54-24 Type A (pending)

• Available in white (RAL 9010)

• Complete EASE, CF2, CAD, & BIM information available online

SPECIFICATIONS

AD-C4T-LP

Effective frequency range1

68 Hz – 20 kHz

Rated noise power / voltage2

30 watts / 22 volts (rms)

Sensitivity [dB]3 

Sensitivity at 4m, 100V maximum tap

87

TBD

Rated coverage (-6 dB)4

Coverage angle by frequency 

Conical coverage

150° conical DMT

500Hz 1000Hz 2000Hz 4000Hz

160° 160° 160° 160°

One-third octave frequency band contribution at full power using 100V maximum tap (Hz / dB)

500 / 57.4; 630 / 57.4; 800 / 57.4 
1000 / 57.4; 1250 / 57.4; 1600 / 57.4 
2000 / 57.4; 2500 / 57.4; 3150 / 57.4 
4000 / 57.4

Directivity factor (Q)

4.5

Directivity index (DI) [dB]

6.5

Maximum continuous SPL [dB]5

102

Maximum peak SPL [dB]5

108

Nominal impedance [ohms]

16

Recommended amplifier

60 watts

Transformer taps / impedance

16Ω (in bypass setting) 
3.75W (70V); 7.5W (100V) Tap: 1333Ω 
7.5W (70V); 15W (100V) Tap: 667Ω 
15W (70V); 30W (100V) Tap: 333Ω 
30W (70V); N/A (100V) Tap: 167Ω

LF transducer

114 mm [4.5 in] weather resistant paper cone woofer

HF transducer

25 mm [1 in] aluminum dome tweeter

Input connector type

Euroblock connector with parallel output

Enclosure material

ABS baffle on powder coated steel back can

Grille material

Powder coated steel

Ingress protection

IP-54

Operating environment

Designed for indoor use

Operating temperature range

-20 to 50° C [-4 to 122° F]

Cutout dimension

Ø 245 mm [Ø 9.65 in]

Net weight

3 kg [6.6 lb]

Product dimensions (Diameter x Height)

Ø 280 x 100 mm [Ø 11.02 x 3.93 in.]

Shipping weight

10.2 kg [22.5 lb] (pair packed)

Shipping dimensions (H x W x D)

183 x 699 x 394mm [7.2 x 27.5 x 15.5 in](pair packed)

Included accessories

C-ring and tile rails, rail screws, euroblock connector, cut-out template, tether grille

Optional accessories

AD-MR6 (pre-install mud ring)
AD-CC6 (pre-install conduit cover)

Safety Agency

EN54-24: 2008 type A (No. pending) 
UL1480, UL2043, NFPA90, NFPA70 suitable for use in air handling spaces. Transformer UL registered per UL1876, ROHS, C-Tick X000, CE compliant. Baffle meets UL94-V0 and UL94-5VB flammability rating; in accordance with IEC60849 / EN60849 systems.