Specification Sheet

• 4x drivers
• 1x tweeter: Folded Motion
®
XT Obsidian
• 2x mid: 3.5-inch
• 1x bass: 8-inch
• Unidirectional carbon ber multi-section
cones with Nomex
®
backers
• Vojtko™ crossover network constructed
from audiophile-grade components
• Sealed back box
• Die-cast aluminum mounting-lock system
• Pre-install brackets (sold separately)
• Square grille (sold separately)
SPECIFICATIONS
Frequency Response 63–25,000 Hz ± 3 dB
Tweeter Dispersion
(horizontal x vertical)
30° x 80°
Sensitivity 92 dB @ 2.83 volts/ meter
Impedance 4 ohms. Compatible with
4, 6, or 8 ohm rated amps.
Crossover Frequencies 400, 2250 Hz
High-Frequency Driver 1.25 x 2.4 inch (3.2 x 6.1 cm)
Folded Motion XT Obsidian
transducer with 4.5 x 2.75 inch
(11.4 x 7 cm) diaphragm.
Mid-Frequency Drivers Two 3.5-inch (8.9 cm) black
unidirectional carbon fiber
multi-section cone with Nomex
®
backer and cast aluminum
basket, sealed back chamber
format. Concave dust cap.
Low-Frequency Driver 8-inch (20.3 cm) black unidirectional
carbon fiber multi-section cone
with Nomex
®
backer and cast
aluminum basket, sealed back
chamber format. Concave dust cap.
Controls Tweeter Level (dB): +2, –2, 0
Position: FrontR/RearL, FrontL/
RearR, For center choose either
Binding Post Inputs Push style
Components Custom air core coil inductors,
polypropylene film capacitors,
and low DF electrolytic capacitors.
Thermal/current protection.
Suitable Amplifier Range 20–300 watts
Max Power Handling 150 watts
Weight 13.5 lb (6.1 kg)
Overall Size
(diameter x depth)
12.8 x 7.5 inch
(325 x 190 mm)
Required Opening
(including tolerance)
11.4 6 inch
(291 mm)
Projection From
the Wall Surface
0.26 inch
(6.6 mm)
Depth Required Behind
the Wall Surface
7.2 inch
(184 mm)
Optional Accessories Pre-install bracket (PN: C8HTBRK)
Square grille (PN: C8HTSQ)
State-of-the-art Truth in Sound—from extreme home theater to transcendent
two-channel listening, the Masterpiece™ CI Series oers the biggest, boldest,
and most lifelike performance possible. A tribute to the acoustic achievements
of MartinLogan’s original iconic masterpiece, our electrostatic speakers.
™