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Klipsch CDT-3650-C II

CDT series

The Klipsch CDT-3650-C II is an in-ceiling speaker with 8 Ω impedance and 93 dB sensitivity. 27 of the 29 receivers and amps in our catalogue can drive it.

Impedance
8 Ω
What the receiver must be rated for
Sensitivity
93 dB
Higher is louder per watt
Bass extension
63 Hz
How low it plays
Woofer
6.5 in
Nominal size

$125 each (MSRP, September 2026)

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3D model of the Klipsch CDT-3650-C II

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Which receivers and amps can drive it?

What decides it is impedance: the CDT-3650-C II is 8 Ω, and the receiver or amp has to be rated for that, and as a height speaker it needs Dolby Atmos or DTS:X decoding.

  • Works

    Receivers and amps rated for 8 Ω

    27 in our catalogue

  • Not recommended

    Receivers without Dolby Atmos or DTS:X

    A height speaker needs one that decodes them.

    2 in our catalogue

In its price range

All 29 receivers and amps we checked

Works27

Not recommended2

  • Denon AVR-S570BT

    Denon AVR-S570BT has no Dolby Atmos or DTS:X decoding for height speakers.

  • Denon AVR-S670H

    Denon AVR-S670H has no Dolby Atmos or DTS:X decoding for height speakers.

Plan your room around the CDT-3650-C II.

Draw your room in 3D, place the CDT-3650-C II and see how they sound at your seat, with every connection to your receiver checked. Designing is free.

Build it in your room

CDT-3650-C II specifications

Impedance
8 Ω
Sensitivity
93 dB (2.83 V, 1 m)
Low end
63 Hz
Drivers
1 × 25 mm, 1 × 165 mm
Size
9×9×4 in
Weight
3.08 kg (6.8 lb)
MSRP
$125 each (MSRP, September 2026)

Every value comes from the sources under References, last retrieved September 15, 2026. To check it against the rest of your system, use the compatibility checker.

Questions about the CDT-3650-C II

What receiver do I need for the CDT-3650-C II?
One rated for 8 Ω speakers. In our catalogue, Emotiva BasX A-700, Yamaha RX500A and Denon AVR-X1700H are rated to drive it. Denon AVR-S570BT and Denon AVR-S670H are not rated for it.
Is the CDT-3650-C II 4 ohm or 8 ohm?
The Klipsch CDT-3650-C II has a nominal impedance of 8 Ω. Use a receiver or amplifier rated down to 8 Ω or lower.
How much power does the CDT-3650-C II need?
Klipsch does not publish a recommended amplifier power. Its sensitivity is 93 dB (2.83 V, 1 m). How much of that you use depends on how far you sit and how loud you listen, which the 3D editor works out for your room.
How low does the CDT-3650-C II go?
The Klipsch CDT-3650-C II is rated down to 63 Hz. Below that, a subwoofer takes over; where the bass actually lands depends on your room's modes.
How big is the CDT-3650-C II?
The Klipsch CDT-3650-C II measures 241 × 241 × 114 mm (9.5 × 9.5 × 4.5 in, width × height × depth) and weighs 3.08 kg (6.8 lb).

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References

  1. Klipsch CDT-3650-C II: Spec sheet, d2um2qdswy1tb0.cloudfront.net, retrieved September 15, 2026
  2. Klipsch CDT-3650-C II: Retailer listing, walmart.com, retrieved September 15, 2026

Brand names are trademarks of their owners. Not affiliated with or endorsed by any manufacturer. 3D models are our approximations. Prices are manufacturer list prices (MSRP) as of the month shown. How we earn from buy links: affiliate disclosure.