Specifications:
System:
Frequency Response (+1,
Enclosure Resonance Frequency: 38 Hz
Low Frequency Extension: User controls set to default
Distortion, 96 dB SPL, 1 m:
2nd Harmonic: <0.6%
3rd Harmonic: <0.5%
Low Frequency (<120 Hz):
2nd Harmonic: <2%
3rd Harmonic: <1%
Maximum SPL (80 Hz - 20 kHz): >108 dB SPL / 1m
Maximum Peak SPL (80 Hz - 20 kHz): >111 dB SPL / 1m
Signal Input: Neutrik “Combi”
Calibrated Input Sensitivity, XLR & ¼":
+4 dBu / +8 dBu: 96 dB SPL / 1 m
AC Input Voltage: 100 /240 VAC, 50/60 Hz (auto sensing)
AC Input Connector: IEC
User Controls:
High Frequency Control (2 kHz - 20 kHz): +1 dB, 0 dB,
Low Frequency Control (< 100 Hz): 0 dB,
Low Frequency Alignments: 36 dB/octave, 24 dB/octave (VLF protection off)
Calibrated Input Sensitivity:
Boundary Compensation Settings: 0,
Variable Input Attenuation: 0 dB to
RMC External Bypass: ¼" jack
RMC Active Switch: In/Out
RMC Frequency Adjust: 26 Hz - 96 Hz (10th octave, 18 centers)
RMC Depth Adjust: 0 - 14 dB (cut only)
RMC Q Adjust: 1/20th to 1/2 octave, 21 steps
Transducers:
Low Frequency Model: 218F
Diameter: 203 mm (8 in)
Voice Coil: 38 mm (1.5 in) Differential Drive® with dynamic braking coil
Magnet Type: Ferrite, with integral heat sink
Cone Type: Carbon fiber composite
Impedance: 2 ohms
High Frequency Model: 053TiS
Diameter: 25 mm (1 in) diaphragm
Voice Coil: 25 mm (1 in)
Magnet Type: Ferrite, shielded
Diaphragm Type: Damped titanium composite
Other Features: Elliptical oblate spheroidal waveguide
Impedance: 4 ohms
Amplifier:
Low Frequency:
Topology: Class
Sine Wave Power Rating: 250 watts (<0.1% THD into rated impedance)
THD + N, ½ Power: <0.05%
High Frequency:
Topology: Class
Sine Wave Power Rating: 120 watts (<0.1% THD into rated impedance)
THD + N, ½ Power: <0.05%
Physical:
Finish: Smooth dark graphite
Handles: 2 each, flush mounted on sides
Mounting: 4 threaded mounting points conforming to industry standard square pattern, 127 x 70 mm (5 x 2.75 in) center to center. M6 metric threads.
Enclosure Volume (net): 28 liter (1 cu ft)
Low Frequency Vent: Rear ported linear dynamics aperture (integrated with amplifier heat sink)
Baffle Construction:
Enclosure Construction: 19 mm (¼ in) MDF
Net Weight: 17.7 kg (39 lb)
Dimensions (HxWxD): 406 x 330 x 325 mm (16 x 13 x 12.8 in)
Caution: Unsafe mounting or overhead suspension of any heavy load can result in serious injury and equipment damage. Mounting of speakers should be done by qualified persons in accordance with all applicable local safety and construction standards. Be certain to follow the instructions provided by the manufacturer of the mounting bracket. Before selecting a mounting bracket, be certain that it is capable of supporting the weight of the speaker to be mounted.
Amplitude & Phase
96 dB/1 m (Distortion raised 20 dB)
2nd
3rd
102 dB/1 m (Distortion raised 20 dB)
2nd
3rd
Notes:
All measurements unless otherwise stated made anechoically in a 4 environment at 2 meters, referenced to 1 meter by inverse square law.
The reference measurement microphone position is located perpendicular to the cen- terline of the low and high frequency transducers at the point 55 mm (2.2 in) below the center of the high frequency diaphragm.
Acoustic loading provided by the listening room increases maximum SPL capability and low frequency bass extension as compared to stated anechoic values.
Distortion measurements performed with the input voltage necessary to produce the stated A- weighted SPL at the stated measurement distance. Distortion figures refer to the maximum distortion measured in any 1/10th octave wide band in the stated fre- quency range.
JBL continually engages in research related to performance improvements. New mate- rials, production methods, and design refinements are introduced into existing prod- ucts without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specification unless otherwise stated.
