two way speaker system
C4128
TWO WAY SPEAKER SYSTEM
The C4128 is a full range two way high sensitivity passive system,
compact and versatile.
The C 4128 is a two-way, dual woofer, passive loudspeaker
designed to provide extended low frequency performance from a
compact vented enclosure.
It features advanced technology, latest generation transducers:
the 8” woofers are equipped with a 2” voice coil and the 1”
neodymium compression driver is equipped with a 1.5” voice coil,
mounted on a rotatable 90 x 70 constant directivity horn, providing
very natural sound reproduction.
It is the optimum choice for a variety of fixed or portable
applications, thanks also to the pole mount, the very light weight
and small size.
p/n. 130.00.170
It features four M10 mounting points for horizontal or vertical
U-bracket, cabinet is asymmetric (15 and 45) for versatile ceiling/
wall installation and floor monitoring operation.
The C4128 can be used as a main speaker in small-medium,
near field systems or as a fill/delay element in bigger systems.
The design also permits optimum use in Theatre ‘Under Balcony
Applications’.
The wide coverage angle and the true constant directivity of
the newly designed horn make the coverage of a large audience
very easy; the crossover design guarantees the perfect pattern
matching of woofer and compression driver and includes active
electronic protection for the driver. The possibility to rotate the
horn optimises both horizontal or vertical installations.
FEATURES
133.60.100 AC C28 V-BR
Pair of bracket for mounting C4128
speakers on the wall - Adjustable
vertical inclination - Black
133.60.099 AC C28 H-BR
Pair of bracket for mounting C4128
speakers on the wall - Adjustable
horizontal inclination - Black
10
High efficiency
Active Mosfet Compression Driver Protection
LICC Crossover
CMD Design
Rotatable horn
M10 mounting points
Asymmetrical cabinet under-balcony/wedge monitor applications
APPLICATIONS
Permanent Installations
Main Reinforcement in small spaces
Portable Systems AV Presentations
Zone Delay and Fill Systems
Under Balcony Applications
Stage monitor in multimedia environments, auditoriums house of worship COMPACT SERIES
RESPONSE 1W/1m
SYSTEM
IMPEDANCE
FREQ. RANGE (-10 dB):
55 Hz - 20 kHz
FREQ. RANGE (-3 dB):
95 Hz - 20 kHz
HORIZ. COVERAGE ANGLE (-6 dB):
90°
VERTICAL COVERAGE ANGLE (-6 dB):
60°
DIRECTIVITY FACTOR; Q:
9.25
93 dB , 1W @ 1m (1)
SYSTEM SENSITIVITY:
125 dB, @ 1m
RATED MAXIMUM SPL:
8 Ohm
SYSTEM NOMINAL IMPEDANCE:
SYSTEM INPUT POWER RATING RMS:
400 W (2)
SYSTEM INPUT POWER RATING PEAK:
1600 W
RECOMMENDED AMPLIFIER:
800 W (3)
HF PROTECTION:
Dynamic
CROSSOVER:
BEAMWIDTH
vs. FREQUENCY
TRANSDUCERS
LOW FREQUENCY:
2x8” (203 mm) woofer with
2” (50 mm) coil
NOMINAL IMPEDANCE:
16 Ohm
INPUT POWER RATING:
200 W AES ; 400 W Peak
SENSITIVITY:
HIGH FREQUENCY:
DIRECTIVITY
INDEX AND Q
2.1 kHz
94 dB, 1W @ 1m
1”(25mm) throat, 1.5” (35,5mm)
coil diaphragm assembly
NOMINAL IMPEDANCE:
8 Ohm
INPUT POWER RATING:
25 W AES ; 50 W Peak
SENSITIVITY:
109 dB, 1W @ 1m
PHYSICAL
ENCLOSURE:
RIGGING INSERTS:
CSI PRODUCT SPECIFICATIONS FOR DESIGNERS, SPECIFIERS, AND CONSULTANTS
(ALSO KNOWN AS “A&E SPECIFICATIONS”)
The following are “Part 2 Products” CSI-type specifications. It is assumed that “Part 1 General –
Administrative and Procedures” and “Part 3 Execution – Installation and Maintenance” are part of an
overall audio system or project specification.
PART 2 PRODUCTS
2.01 Approved Manufacturer/Product
A. RCF, Via Raffaello 13, 42124 , Reggio Emilia, Italy.- B. Model number: C4128
2.02 Design
Configuration Compact 2 way speaker - LF Sub-section 2 x 8” mid-bass, 2” voice coil - HF Sub-section
1” neodymium, 1,5” aluminium voice coil.
2.03 Acoustical Proprieties
Nominal dispersion angle: Horizontal: 90° - Vertical: 60° - Axial frequency range: 55 Hz-20 kHz - Axial
sensitivity: 93 dB, 1W @ 1m - Power handling: Applicable power 400 W RMS - Musical power 800 W
Peak power 1600 W - Nominal impedence: 8 Ohm.
2.04 Physical Properties
Enclosure: Trapezoidal, 15° - 45° side angles 10 mm birch plywood construction - Rigging inserts: 3 x
M10 inserts (1 top, 2 side), 4 X M5 inserts (rear for bracket omni mount), 2 X M6 inserts (rear) + pole
mount - Color: Black, scratch resistant paint - Grille: Custom perforated steel grille - Input Connectors:
2 X Speakon® NL4 - Dimensions (H x W x D): 25.59”x 10.23”x 11.77” - 650 x 260 x 299 mm
Weight: 38.36 lb - 17.4Kg.
2.05 Accessories
AC C28 H-BR Pair of bracket for mounting C4128 speakers on the wall. Adjustable horizontal
inclination . Colour black.
AC C28 V-BR Pair of bracket for mounting C4128 speakers on the wall. Adjustable vertical inclination
. Colour black.
Trapezoidal, 15° side angles 10mm
birch plywood construction
3 x M10, 4 X M5, 2 X M6 inserts
+ pole mount
COLOR:
Black, scratch resistant paint
GRILLE:
Custom perforated steel grille
INPUT CONNECTORS:
DIMENSIONS (H x W x D):
WEIGHT:
Speakon® NL4
25.59”x 10.23”x 11.77”
650 x 260 x 299 mm
38.36 lb - 17.4 Kg
1) Measured on axis in the far field with 1 watt (2.83V RMS, 8 Ohm) input and
referenced to 1 meter distance using the inverse square law. Listed sound pressure
represents an average from 300 Hz to 3 kHz.
2) Using 20 Hz to 20 kHz, Pink Noise Spectrum, 2 hours, + 6 dB crest factor, with
RMS voltage calculated on speaker minimum impedance.
3) Recommended Amplifier is a power capability value that should be taken as a
guide.
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