Patented BroadBeamHP® waveguide technology delivers a consistent dispersion pattern for maximum intelligibility and edge-to-edge coverage. A 66-watt transformer and high output for the sound reinforcement and PA markets. One 8.0 inch treated fiber driver and one compression driver with a 1.0 inch exit mounted to a proprietary cast-aluminum baffle and heat sink. Rapid-installation, blind-mount, fixed-wing mounting mechanism with constant-tension design affixes to ceiling thicknesses ranging from 0.25 inch (6.4 mm) to 1.91 inch (48.5 mm). Easy access six-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass position. Separate tool-free magnetic grille and bezel assembly with integrated safety cable for ease of install and in-field painting. Average sensitivity of 93.0 dB offers high-output capabilities and reduced amplification costs. UL 1480 (UEAY) and 2043 approved. Included accessories: Tile bridge, conduit plate, Euroblock connector and paint mask/installation aid.

Specifications: CM890iMounting hardware included
System Type

8" Coax, in-ceiling, high SPL, ported (66 Watt transformer for 25/70.7/100 Volt or voice coil direct)

Nominal Impedance8 ohm
Impedance (minimum)5.2 ohm
Sensitivity dB @ 2.83V/1M93.0dB
Sensitivity dB @ 1W/1M (2)93.0dB
Frequency Response (± 3 dB)80 Hz - 22 kHz
Frequency Response (±10 dB)62 Hz - 22 kHz
Max. Program Power250w
Max. Continuous Power RMS125w
Max. Power SPL @ 1 M114.0dB
Tap Selector6 Position rotary switch with transformer bypass
70.7 Volt Transformer Taps66w / 111.0dB
100 Volt Transformer Taps (dB)66w / 111.0dB
25 Volt Transformer Taps (dB)9w / 102.5dB
Transformer Options25 / 70.7 / 100 Volt 8 Ohm direct
ColorsBlack or white
Port length2.24 in
Woofer - part8″ Treated Paper Cone w/ Cloth Surround
Inputs4 Pin, 5.08 mm Euroblock for individual or daisy chain connection
Backcan Diameter296.7 mm / 11.68 in
Backcan Height201.7 mm / 7.94 in
Visible Diameter374.9 mm / 14.75 in
Visible Height27.4 mm / 1.07 in
Mounting Hole Diameter323.9 mm / 12.75 in
Weight6.5 kg / 14.33 lb
Shipping Weight19.4 kg / 42.76 lb
Accessories OptionalPre-Construction Bracket (AC-CM8-PCB), Junction Box (AC-CMi-JBOX), Tile Bridge (AC-CM8-TB), Low-Profile Flangeless Grille (GRL-6/8-FLG-BK/WH)
Packaging2 per box
Regulatory - ULApproved 1480 & 2043
Regulatory - CEApproved
Regulatory - IPnot planned
Regulatory - CCCapproved