Peerless_CSX217H_850136.pdf

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 and the driver is very suitable for

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.

99,

vented boxes.

Thiele Small parameters:

Free Air Common Baffled

Nominal impedance

(ohm)

Minimum impedance/at freq. Zmin (ohm/Hz)

6.6/188

Maximum impedance

(ohm)

76.5

DC resistance

(ohm)

5.9

Voice coil inductance

(mH)

2.6

Capacitor in series with 8 ohm

(for impedance compensation) Cc

(µF)

Resonance Frequency

(Hz)

28.2

27.4

Mechanical Q factor

Qms

3.50

3.61

Electrical Q factor

Qes

0.29

0.30

Total Q factor

Qts

0.27

0.28

F (Ratio fs/Qts)

(Hz)

Mechanical resistance

Rms (Kg/s)

1.54

Moving mass

Mms (g)

30.5

32.4

Suspension compliance

Cms (mm/N)

1.04

Effective cone diameter

(cm)

17.3

Effective piston area

(cm²)

235

Equivalent volume

VAS (ltrs)

79.7

Force factor

(N/A)

10.4

Reference voltage sensitivity

Re 2.83V 1m at 188 Hz (Measured) (dB)

89.5

Voice coil diameter

(mm)

Voice coil length

(mm)

Voice coil layers

Flux density in gap

(T)

0.95

Total useful flux

(mWb)

0.90

Height of the gap

(mm)

Diameter of magnet

dm (mm)

102

Height of magnet

hm (mm)

Weight of magnet

(kg)

0.68

Power handling:

Long term Max System Power (IEC) (W)

150

Code

850136

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.

Peerless

- 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.

Made In Denmark

8.11uF

217mm

90mm

= 24.35uF

= 14.36uF

= 0.25mH

4mmØ

= 0.56mH

= 0.19mH

7.4ohm

47.8uF

Page 2/2

Acoustic Engineering

2500Hz

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