FlexUnits Loudspeaker Drivers

The Flexunits system was developed to fulfil individual data as desired, and we are able to meet even the most specific individual requirements – mechanical as well as electrical.

Fs, Vas and Qts can all be modified and the coil former can be made of either aluminium or Kapton. In special cases the cone material and suspensions can also be changed.

Gap height and coil length as well as diameter can be selected individually and the magnet size can be altered to fit the needed strength required.

For the less experienced customer, we have made a line of multipurpose drivers, represented by each size, from 4” mid-woofers through 15” subwoofers, enabling you to approach a project, the more conventional way. It is also possible to use one of the standard drivers as a raw model, and getting parameters changed in the direction you wish.

 

Features - FlexUnits

  • Die cast aluminium chassis.
  • Gold plated input connectors.
  • Ventilation under the rear suspension.
  • Voice coil gab ventilation.
  • Maximum rear ventilation for minimum compression.
  • Compressed lightweight aluminium voice coil, wound in hexagonal technique.

Available Sizes:

  • 4" (Flexunits 4 H 52 06 13)
  • 5" (Flexunits 5 H 52 15 06 SD)
  • 6" (Flexunits 6 H 52 17 06 SD)
  • 8" (Flexunits 8 I 52 20 08 SD)
  • 10" (Flexunits 10 A 77 25 10)
  • 12" (Flexunits 12 B 77 25 10)
  • 15" (Flexunits 15 E 102 25 10)

FlexUnits Code:


FlexUnits
4H520613
 5H521506SD 6H521706SD 8I522008SD 10A772510 12B772510 15E1022510

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Frequency Response
Effective Cone Area (Cm2)
96
137
174
225
326
515
835
Nominal Impedance (W)
8
8
8
8
8
8
8
Resonance Frequency (Hz)
41
40
32
33
25
25
18
Equivalent Air Volume (Ltrs.)
23
28.5
65
70
140
250
600
Mecanical Q Factor
1.45
1.8
1.76
1,85
2.32
2.5
1,5
Electrical Q Factor
0.36
0.39
0.33
0,3
0.29
0.34
0,26
Total Q Factor
0.29
0.32
0.28
0,26
0.26
0.3
0,22
Acceleration Factor
667
499
458
423
259
203
143
Nominal Power Handling (W)
120
150
160
180
200
250
400
Sensitivity (dB)
89
89
90
91
91
92
93
Frequency response (Hz)
44-5500
42-4300
36-3800
34-2200
28-1800
DC resistance (W)
5.3
5.6
5.5
6
5.4
5.4
6
Compliance (m/Nm)
1.7826
1.0846
1.5335
0,988
0.9409
0.6733
0,615
Mechanical res. (Kg/s)
1.502
2.038
1.843
2,64
2.916
3.782
9,59
VC inductance (mH)
0.36
0.13
0.13
0,20
0.76
0.76
0,98
Moving mass (g)
8.45
14.60
16.13
23,5
43.07
60.20
127
Force factor
5.66
7.26
7.35
9,96
11.17
12.24
18,22
Linear excursion (x-max) (mm)
4
5.2
6.5
8
8.6
8.6
8.6
Max. excursion (P-P) (mm)
32
32
35
32
42
48
46