MartinLogan SISTINE4XC Specification Sheet

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.

™

• 40x drivers

®

• 16x tweeters: Folded Motion

XT Obsidian

• 16x mid: 3.5-inch • 8x bass: 6.5-inch

• Unidirectional carbon ber multi-section

®

cones with Nomex

backers

• Line source conguration with controlled
dispersion sound radiation

• Vojtko™ crossover network constructed
from audiophile-grade components

• Phenolic bae • Sealed back box • Surface mount grille

SPECIFICATIONS

Frequency Response 48–25,000 Hz ± 3 dB

Tweeter Dispersion
(horizontal x vertical)

Sensitivity 95 dB @ 2.83 volts/ meter

Impedance 4 ohms. Compatible with

Crossover Frequencies 300, 2700 Hz

High-Frequency Drivers Sixteen 1.25 x 2.4 inch (3.2x6.1cm)

Mid-Frequency Drivers Sixteen 3.5-inch (8.9 cm) black

multi-section cone with Nomex

Low-Frequency Drivers Eight 6.5-inch (16.5 cm) black

multi-section cone with Nomex

Binding Post Inputs Push st yle (two sets for

Components Custom air core coil inductors,

polypropylene film capacitors, and

Suitable Amplifier Range 50–800 watts

Max Power Handling 400 watts

Weight 150 lb (68.1 kg)

Required Wall Cavity
(width)

Required Wall Cavity
(height, unobstructed)

Required Wall Cavity
(depth)

Enclosure (width
x height x depth,

excludes padding)

Grille (height x width) 11.5 x 59.5 inch (292x1511mm)

Installation Kit
(included)

1/2-inch drywall (PN: 40XWIWK05)

5/8-inch dr ywall (PN: 40XWIWK0625)

80° x 52-inch line source

4, 6, or 8 ohm rated amps.

Folded Motion XT Obsidian

transducer with 4.5 x 2.75 inch

(11.4 x 7 cm) diaphragm.

unidirectional carbon fiber

backer and cast aluminum

basket, sealed back chamber

format. Concave dust cap.

unidirectional carbon fiber

backer and cast aluminum

basket, sealed back chamber

format. Concave dust cap.

easy installation)

low DF electrolytic capacitors.

Minimum: 14.5 inch (368 mm)

Maximum: 16.5 inch (420 mm)

Minimum: 89 inch (2260 mm)

Minimum: 3.5 inch (89 mm)

14.3 x 84.2 x 3.4 inch

(361x2137x86 mm)

Choose appropriate size

®

®

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.

™

7x drivers

®

• 1x tweeter: Folded Motion

XT Obsidian

• 1x mid: 6.5-inch

• 2x bass: 6.5-inch

• 3x passive: 6.5-inch

• Unidirectional carbon ber multi-section

®

cones with Nomex

backers

• Vojtko™ crossover network constructed
from audiophile-grade components

• Phenolic bae

• Sealed back box

• Die-cast aluminum mounting-lock system

• Pre-install brackets (sold separately)

SPECIFICATIONS

Frequency Response 52–25,000 Hz ± 3 dB

Tweeter Dispersion
(horizontal x vertical)

Sensitivity 95 dB @ 2.83 volts/ meter

Impedance 4 ohms. Compatible with

4, 6, or 8 ohm rated amps.

Crossover Frequencies 200, 3200 Hz

Tweeter Aiming Rotatable tweeter for horizontal

or vertical installations

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 Driver 6.5-inch (16.5 cm) black unidirectional

carbon fiber multi-sec tion cone

with Nomex

aluminum basket, sealed back

chamber format. Concave dust cap.

Low-Frequency Drivers Two 6.5-inch (16.5 cm) black

unidirectional carbon fiber

multi-section cone with Nomex

backer and cast aluminum

basket, sealed back chamber

format. Concave dust cap.

Passive Radiators Three 6.5-inch (16.5 cm)

unidirectional black carbon fiber

cone with Nomex

aluminum basket, sealed back

chamber format. Concave dust cap.

Binding Post Inputs Push st yle (two sets for

Components Custom air core coil inductors,

polypropylene film capacitors,

and low DF electroly tic capacitors.

Thermal/current protection.

Suitable Amplifier Range 20–300 watts

Max Power Handling 150 wa t ts

Weight 44.5 lb (20.2 kg)

Overall Size
(height x width x depth)

Required Opening
(including tolerance)

Projection From
the Wall Surface

Depth Required Behind
the Wall Surface

Optional Accessories Pre-install bracket (PN: 7X WBRK)

®

®

46.86 x 10.6 x 4.11 inch

(1190.2 x 269.2 x 104.3 mm)

80° x 30°

backer and cast

backer and cast

easy installation)

45.57 x 9.29 inch

(1157 x 236 mm)

0.31 inch

(7.8 mm)

3.8 inch

(96.5 mm)

®