QSC AD-C6T-HC AcousticDesign High-Performance Ceiling Loudspeaker

High-performance, two-way passive ceiling loudspeaker designed for professional installed audio applications.
Features a 6.5-inch paper woofer and a 1.4-inch dome compression driver for clear, detailed sound reproduction.
Supports 70V and 100V distributed audio systems with multiple transformer taps and a 16-ohm bypass option.
Provides 75-degree conical coverage, with a frequency response of 45 Hz to 20 kHz (-10 dB).

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QSC AD-C6T-HC Specifications

General
Product Type	Passive ceiling-mount loudspeaker
Series	QSC AcousticDesign
Model	AD-C6T-HC
Package Quantity	Pair (2 speakers)
Speaker Type	2-way
Power and Electrical
Amplification	Passive
Power Handling	120 W
70V Transformer Taps	60 / 30 / 15 / 7.5 W or 16-ohm bypass
100V Transformer Taps	60 / 30 / 15 W or 16-ohm bypass
Nominal Impedance	14.97 to 16 ohms
Enclosure	Sealed
Drivers
High-Frequency Driver	1 × 1.4-inch (35.6 mm) dome compression driver
Low-Frequency Driver	1 × 6.5-inch (165.1 mm) paper woofer
LF Voice Coil	1.75 inches (44.45 mm)
LF Magnet	Ferrite
Performance
Frequency Response	45 Hz to 20 kHz (-10 dB)
Maximum SPL (Continuous)	110 dB
Maximum SPL (Peak)	116 dB
Sensitivity	90 dB
Coverage Angle	75° conical
Directivity Index	10 dB
Directivity Factor	10
Crossover Frequency	2.5 kHz
Connectivity
Input / Thru Connector	1 × 4-pin block speaker input/thru
Physical
Environmental Resistance	No
Color	White (RAL 9010)
Mounting Type	In-ceiling
Construction Materials	ABS, steel
Dimensions (H × W × D)	13.4 × 13.4 × 12 inches (340.4 × 340.4 × 304.8 mm)

Manuals

Download QSC AD-C6T-HC User Manual (PDF)

Frequently Asked Questions

Q1: What is the QSC AD-C6T-HC?

The QSC AD-C6T-HC is a two-way passive ceiling loudspeaker designed for professional installed audio systems.

Q2: How many speakers are included?

This product is supplied as a pair, including two speakers.

Q3: What driver sizes does it use?

It features a 6.5-inch paper woofer and a 1.4-inch dome compression driver.

Q4: Is the AD-C6T-HC a powered speaker?

No. It is a passive loudspeaker and requires a compatible external amplifier.

Q5: Does it support 70V and 100V systems?

Yes. It supports 70V and 100V distributed audio systems with transformer tap options.

Q6: Can it operate in low-impedance mode?

Yes. The transformer provides a 16-ohm bypass option for compatible low-impedance systems.

Q7: What is its frequency response?

The specified frequency response is 45 Hz to 20 kHz at -10 dB.

Q8: What is the speaker's coverage angle?

The AD-C6T-HC provides 75-degree conical coverage.

Q9: What is the maximum SPL?

Its maximum SPL is specified as 110 dB continuous and 116 dB peak.

Q10: Where is this speaker typically installed?

It is designed for in-ceiling installation in professional commercial audio environments.

Q11: Is the QSC AD-C6T-HC suitable for distributed background music?

Yes. Its 70V and 100V transformer taps make it suitable for compatible distributed audio applications, including background music and announcements.

Q12: What amplifier should be used with the AD-C6T-HC?

Choose an amplifier compatible with the speaker's power handling and the selected connection mode. For 70V or 100V systems, confirm that the amplifier supports the corresponding distributed audio line voltage.

Q13: Can the AD-C6T-HC be connected to a 70V or 100V amplifier?

Yes. Use the appropriate transformer tap for the system voltage and required power level, following the manufacturer's installation instructions.

Q14: What should be checked before installing the speaker?

Confirm ceiling compatibility, mounting clearance, amplifier compatibility, wiring requirements, and the selected transformer tap before installation. Refer to the user manual for detailed instructions.

Q15: Where can I find the QSC AD-C6T-HC manual?

The user manual is available in the Manuals tab on this product page as a downloadable PDF.

QSC AD-C6T-HC 6.5 Inch 2-Way Passive Ceiling-Mount Loudspeaker (Pair, White, High-Ceiling)

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