650-R2 Concert Series Subwoofer

650-R2 Concert Series Subwoofer & B-2EX Control Electronics Unit

Acoustical

Crossover

...

100 Hz

Transducers

Low Frequency

...

Two 18" cone drivers, 8 ohms per driver

B-2EX Control Electronics Unit

Specifications

Input Type	...	Balanced (active), 47k ohms
Output Type	...	Active push-pull, will drive 600 ohms
Max. 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
Power	...	120/240V AC, 50/60 Hz (rear-panel switchable)

Indicators

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

Notes

1. Measured 1 meter on-axis, half-space conditions, pink noise input, in thirdoctave bands.

2. Loudspeaker driven by power amplifier rated at 400W into 4 ohms, weighted noise signal source.

3. “A”- weighted, unbalanced.