650-R2 Specifications
Acoustical – 650-R2/B-2EX System
Frequency Response
1
30-100 Hz +4 dB
Maximum SPL
2
Continuous 130 dB
Peak 135 dB
Acoustical Crossover Frequency 100 Hz
650-R2 Loudspeaker
Transducers (2) MS-18 18-inch cone drivers, 8 ohms per driver
Enclosure 14 cu. ft. vented, multi-ply Finnish birch
Finish Black textured, carpet or weather protected (optional)
Protective Grill Perforated steel screen, charcoal-grey foam covering
Connector EP-4 male, EP-5 male (Europe only)
Wheels Two 3" diameter rubber tread rigid self-lube casters
Physical Dimensions 30" W x 45" H x 22
1
⁄2" D
Weight 176 lbs. (79.8 kg)
B-2EX Control Electronics Unit
Input Type Balanced (active), 47k ohms
Output Type Active push-pull, will drive 600 ohms
Maximum Input/Output Level
Balanced +26 dBu
Unbalanced +20 dBu
Hum and Noise
3
-90 dBV
Dynamic Range >110 dB
Sense Inputs 10K ohm true differential, opto-isolated
Driver Protection Circuitry RMS limiter, switchable excursion limiter
Indicators
Limit Red LED
Excursion Red LED
Sense Green LED
Power Green LED
Controls
Front Panel Input level control, AC on/off switch
Preset Panel Safe switch, Crossover Bypass switch
Connectors
Balanced Inputs/Output 3-pin XLR (A-3)
Sense Inputs Banana jacks
Power 120/240V AC, 50/60 Hz (rear-panel switchable)
Physical Dimensions 19" W x 1
3
⁄4" H x 7
3
⁄4" D
Weight 8 lbs. (3.25 kg)
Note 1:
Measured 1 meter on-axis,
half-space conditions,
pink noise input, in third-
octave bands.
Note 2:
Loudspeaker driven by power
amplifier rated at 400W into
4 ohms, weighted noise
signal source.
Note 3:
“A”- weighted, unbalanced.
