Page 1/2 850528 WOOFER/MID 5" MAGNETICALLY - DST-AU

Page 1/2 850528 WOOFER/MID 5" MAGNETICALLY - DST-AU
850528
WOOFER/MID 5" MAGNETICALLY SHIELDED
WOOFER/MID 5" MAGNETICALLY SHIELDED - 134 WR 26 81 SD AL TV
A truly high end mid-woofer with a rigid aerodynamic cast aluminium basket, ventilated spider and shielded for use
next to TVs and computer monitors.. All aspects of this drivers design and manufacture achieves superior engineering
with the lowest possible compression, maximum exertion of the cone, excellent ventilation, etc. Attractive modern
style. Inverted dust cap. Suitable for higher power, high SPL, maintaining excellent dynamics and efficiency at any
volume. The one piece cast aluminium basket provides the necessary sturdy base for the magnet structure and
suspension and allows for a long excursion of the cone. The spider is ventilated to the basket, this achieves the lowest
possible compression and to allow air to flow freely to create a cooling effect for the voice coil and therefor greatly
extend the long term power tolerance. The design of the basket fascia allows for very slim box designs and the edges
are cambered to reduce the necessary amount of counter sinking. Hex screw holes. The three or five layer sandwich
cone improves accuracy and consistency of sound reproduction over the entire frequency range, creating a more
"musical" driver. Due to the soft suspension, an excellent dynamic small signal reproduction is obtained. Other features
are high sensitivity, gold plated terminals and very low harmonic and difference tone distortion. This woofer is
applicable on a wide range of applications, and is especially ideal for very compact 2-way bookshelf boxes (as small as
5L ported), for satellite systems as mains (Closed box 3L - 6L suggested) or as surround sound units. Also popular as
multiple alignment floorstanding boxes, MTM centres, etc., Multiple driver boxes make this highly sensitive unit even
more efficient. Peerless recommend that this highly dampened speaker is best suited to ported designs tuned to 65Hz in
a 10L box. Upper crossover recommended 1500 to 4500Hz.
Parameters
Free-Air Common Baffled
Nominal impedance
Zn
(ohm)
8
Minimum impedance/at freq. Zmin (ohm/Hz)
6.4/376
Maximum impedance
Zo
(ohm)
34.6
DC resistance
Re
(ohm)
5.7
Voice coil inductance
Le
(mH)
1.0
Capacitor in series with 8 ohm
(for impedance compensation) Cc
(µF)
7
Resonance Frequency
fs
(Hz)
61.1
59.9
Mechanical Q factor
Qms
2.07
2.11
Electrical Q factor
Qes
0.41
0.42
Total Q factor
Qts
0.34
0.35
F (Ratio fs/Qts)
F
(Hz)
172
Mechanical resistance
Rms
(Kg/s)
1.89
Moving mass
Mms
(g)
10.2
10.6
Suspension compliance
Cms
(mm/N)
0.67
Effective cone diameter
D
(cm)
10.8
Effective piston area
Sd
(cm²)
91
Equivalent volume
VAS
(ltrs)
7.6
Force factor
Bl
(N/A)
7.4
Reference voltage sensitivity
Re 2.83V 1m at 376 Hz (Measured)
(dB)
89.2
Voice coil diameter
d
(mm)
26
Voice coil length
h
(mm)
14
Voice coil layers
n
2
Flux density in gap
B
(T)
1.24
Total useful flux
(mWb)
0.83
Height of the gap
hg
(mm)
6
Diameter of magnet
dm
(mm)
90
Height of magnet
hm
(mm)
15
Weight of magnet
(kg)
0.4
Code
850488
Page 1/2
850528
WOOFER/MID 5" MAGNETICALLY SHIELDED
Peerless Recommend: "F(ratio) for this driver is 149 and this indicates that the damping is high.
The best way to use this driver is in a vented box with the following suggested box sizes.
10 ltr box. 1 port. Diameter 40 mm. Lenght 65 mm. Tuning freq 62 Hz. Response, - 3 dB appr at 60 Hz.
10 ltr box. 1 port. Diameter 55 mm. Lenght 140mm. Tuning freq 62 Hz. Response, - 3 dB appr at 60 Hz.
5 ltr box. 1 port. Diameter 30 mm. Lenght 50 mm. Tuning freq 78 Hz. Response, - 3 dB appr at 80 Hz.
For small satellites it would be best to use the driver in a closed box. Box sizes from 3-6 ltr will be suitable.
Cross-over freq between 1500-4500 Hz is recommendable for this model. "
152mm
Speaker Infinite Baffle Response Curve
70mm
120mm
90mm
5mmØ
m
0m
14
Rear Ventilated
Dustcap & Spider
Hole Cut = 134mm Diam
Projected Box Frequency Response Curves
Page 2/2
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