850136 8" WOOFER CSX Page 1/2 - DST-AU

850136 8" WOOFER CSX Page 1/2 - DST-AU
850136
8" WOOFER CSX
WOOFER 8" - CSX217H - 217 WR 33 102 SD 4L
High end woofer with a large four layer voice coil and heavy magnet. Inverted dust cap, multi-layer sandwich cone,
rubber roll surround. Well suited for reflex designs where this driver excels in producing a deep dry bass due to its low
resonance frequency and premium construction. The excellent midrange response makes this unit suitable for wide range
applications and is very easy to set up and filter. In fact it can perform admirably in a simple 2 way system making
cabinet and crossover design easy and box size reasonable, yet producing large quantities deep, warm, accurate sound.
F(ratio) for this driver is 99, and the driver is very suitable for vented boxes.
25 ltr box. 1 port. Diameter 70 mm. Lenght 120 mm. Tuning freq 50 Hz. Response, - 3 dB appr at 52 Hz.
40 ltr box. 1 port. Diameter 70 mm. Lenght 85 mm. Tuning freq 45 Hz. Response, - 3 dB appr at 45 Hz.
60 ltr box. 1 port. Diameter 70 mm. Lenght 65 mm. Tuning freq 40 Hz. Response, - 3 dB appr at 40 Hz.
Cross-over freq from 1500-3000 Hz is recommendable for this model.
Thiele Small parameters:
Nominal impedance
Zn
(ohm)
Minimum impedance/at freq. Zmin (ohm/Hz)
Maximum impedance
Zo
(ohm)
DC resistance
Re
(ohm)
Voice coil inductance
Le
(mH)
Capacitor in series with 8 ohm
(for impedance compensation) Cc
(µF)
Resonance Frequency
fs
(Hz)
Mechanical Q factor
Qms
Electrical Q factor
Qes
Total Q factor
Qts
F (Ratio fs/Qts)
F
(Hz)
Mechanical resistance
Rms (Kg/s)
Moving mass
Mms (g)
Suspension compliance
Cms (mm/N)
Effective cone diameter
D
(cm)
Effective piston area
Sd
(cm²)
Equivalent volume
VAS (ltrs)
Force factor
Bl
(N/A)
Reference voltage sensitivity
Re 2.83V 1m at 188 Hz (Measured) (dB)
Voice coil diameter
d
(mm)
Voice coil length
h
(mm)
Voice coil layers
n
Flux density in gap
B
(T)
Total useful flux
(mWb)
Height of the gap
hg
(mm)
Diameter of magnet
dm (mm)
Height of magnet
hm (mm)
Weight of magnet
(kg)
Power handling:
Long term Max System Power (IEC) (W)
Code
850136
Free Air Common Baffled
8
6.6/188
76.5
5.9
2.6
21
28.2
3.50
0.29
0.27
27.4
3.61
0.30
0.28
99
1.54
30.5
32.4
1.04
17.3
235
79.7
10.4
89.5
33
14
4
0.95
0.90
6
102
20
0.68
150
Page 1/2
850136
8" WOOFER CSX
Below are some theoretical projections of how well this driver will perform in a ported box design. Useable bass of below 30Hz is quite
achievable and as low as 25Hz with a bit of port tuning. Peerless have suggested box volumes of between 25 and 60 liters, leaving you
quite a range in your box design considerations. Put simply, the larger the box, the deeper the bass. Also for your consideration we have
included some projected response graphs of this driver if used in a cabinet with the Peerless XLS range of passive radiators. 50L box
volume is for comparison only. Smaller box volumes are applicable with minimal loss in bass extension. Tweeter crossover should be kept
between 1500 and 3000Hz.
Below are some theoretical calculations for crossover design. Peerless always
recommend 12 dB per octave crossovers for all there drivers because it affords
excellent protection for each driver with minimal phase problems. The design
below also accommodates Bi-wiring/Amping. However they stress that this by no
means is the best solution for all circumstances. So please use this as a suggestion
only. 3 way designs with the 821615 midrange are also worthy of your
consideration. Multiple driver designs will produce more bass and SPL.
The simple basket design of the 850136 allows use in isobaric and bandpass boxes.
Made In Denmark
2500Hz - 3rd order Butterworth calculated with rated impedance (used 811827
tweeter) including conjugate. Values can be rounded +/- 10%. Use of multiple
capacitors to achieve these odd values is fine.
8.11uF
24.35uF
14.36uF
0.25mH
0.56mH
0.19mH
7.4ohm
47.8uF
217mm
90mm
4mmØ
197mm
=
=
=
=
=
=
=
=
Acoustic Engineering
103mm
C1
C2
C3
L1
L2
L3
R
C
Peerless
m
7m
20
Page 2/2
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