Overall diameter
Bolt circle diameter
Baffle cutout diameter:
- Front mount
- Rear mount
Depth
Volume displaced by driver
Net weight
Shipping weight
Notes:
*The power capacity is determined according to AES2-1984 (r2003) standard.
Program power is defined as the transducer’s ability to handle normal music program material.
**T-S parameters are measured after an exercise period using a preconditioning power test.
The measurements are carried out with a velocity-current laser transducer and will reflect the long
term parameters (once the loudspeaker has been working for a short period of time).
***The Xmax is calculated as (Lvc - Hag)/2 + Hag/3.5, where Lvc is the voice coil length and Hag is
the air gap height.
TECHNICAL SPECIFICATIONS
MOUNTING INFORMATION
DIMENSION DRAWINGS
056
8BR40/N
LOW FREQUENCY TRANSDUCER
KEY FEATURES
THIELE-SMALL PARAMETERS**
10/1
1
211.5 mm. 8 in.
198.3 mm. 7.8 in.
179.5 mm. 7.06 in.
182.5 mm. 7.44 in.
77.5 mm. 3.05 in.
1.5 l. 0.05 ft.
3
1.36 kg. 2.99 lb.
1.55 kg. 3.41 lb.
•
It incorporates a curvilinear cone attached to a rubber
surround, in order to provide suspension stability and to allow
maximum excursion linearity with high sensitivity and
extremely low distortion.
•
It has been specifically designed to deliver exceptional low
and mid frequency reproduction.
200 mm. 8 in.
8 ohms
6.8 ohms
50 w RMS
100 w
90 dB 2.83v @ 1m @ 2
π
35 - 6000 Hz
20 / 60 l 0.7 / 2.12 ft.
3
25.8 mm. 1 in.
1 kg. 2.2 lb.
6.9 N / A
0.025 kg.
16 mm
6 mm
20 mm
Nominal diameter
Rated impedance
Minimum impedance
Power capacity*
Program power
Sensitivity
Frequency range
Recom. enclosure vol.
Voice coil diameter
Magnetic assembly weight
BL factor
Moving mass
Voice coil length
Air gap height
X damage (peak to peak)
Resonant frequency, fs
D.C. Voice coil resistance, Re
Mechanical Quality Factor, Qms
Electrical Quality Factor, Qes
Total Quality Factor, Qts
Equivalent Air Volume to Cms, Vas
Mechanical Compliance, Cms
Mechanical Resistance, Rms
Efficiency,
η
η
η
η
η
o (%)
Effective Surface Area, Sd (m
2
)
Maximum Displacement, Xmax***
Displacement Volume, Vd
Voice Coil Inductance, Le @ 1 kHz
33.2 Hz
6.5 ohms
2.61
0.73
0.57
61.35 l
907.7
µ
µ
µ
µ
µ
m / N
2.02 kg / s
0.3
0.022 m
2
6 mm
130 cm
3
0.8 mH
