RECOMMENDED ENCLOSURES FOR Iridium10, Iridium12 & Iridium15
VENTED BOX
Sub
Connection
Volume (litre/ft3)
Port
Damping
F3
Fb
Ir.10
VC in series
29 / 1,02
3” x 30 cm/11,8”
Line inside
33 Hz
34,0 Hz
Ir.12
VC in series
29,6 / 1,05
3” x 16,5 cm/ 6,5”
Line inside
43,9 Hz
43,0 Hz
Ir.12
VC in parallel
39,65 / 1,4
3” x 18 cm / 7,1”
Line inside
36,6 Hz
35 Hz
Ir.15
*
50 / 1,765
4” x 31 cm/12,2”
Line inside
38,3 Hz
37,0 Hz
* voice coils either in series or parallel
Iridium10, single VC:
32 litres / 1,13 ft
3
F3: 42,2 Hz
Iridium 10, VC:s in parallel:
21,75 litres / 0,77 ft3
F3: 59,3 Hz
Iridium12, single VC:
34 litres / 1,2 ft
3
F3: 47,5 Hz
Iridium15, single VC:
45,5 litres / 1,606 ft
3
F3: 44,6 Hz
SEALED BANDPASS
Vb1=rear chamber,
Vb2=front chamber
Iridium 15
Size
37,5 cm (15")
Impedance
2 x4 ohm
Nom. power (RMS)
600 W (max 1000)
Freq. range
15 Hz - 2,5 kHz
Voice coil, diameter
75 mm (3”)
Voice coil, length
40 mm (1,57”)
X-max
+-14 mm (0,55”)
Cms
73,75
SD
779 cm
2
Cone material
Non-press paper
Magnet weigth
200 oz (5,67 kg)
Magnet, diameter
220mm (8,7”)
Installation depth
176 mm (6,93”)
Mounting hole
360 mm (14,17”)
Outer diameter
390 mm ( 15,35”)
Weigth
13,4 kg (29,54 lb)
Data that can vary depending on the voice coil impedance:
Single voice coil, 4 ohm
Voice coils in series to 8 ohm
Voice coils in parallel to 2 ohm
Re, DC-resistance
3,7 ohm
7,3 ohm
1,7 ohm
Z, impedance
4 ohm
8 ohm
2 ohm
BL product
17
33,3
16,9
Sensitivity
86,2 dB
89,1 dB
89,5 dB
Resonant freq. (Fs)
33 Hz
33 Hz
33 Hz
Vas (litre)
63,54
63,54
63,54
Vas (ft
3
)
2,24
2,24
2,24
Qms
3,4
3,44
3,6
Qes
0,84
0,43
0,39
Qts
0,67
0,38
0,35
Technical specifications for DLS ULTIMATE Iridium 15
SEALED BOX
RUNNING-IN PERIOD
Allow the speaker to play for at least 15-
20 hours. After this time the
performance is correct.
F3
= approximative lower frequency for vented
boxes in Hz. Often called F-3 dB point = the point
where the power is 50% lower.
Fb
= Box resonant frequency
The speaker is installed in Vb1
playing into chamber Vb2 where the
port(s) are installed.
Iridium10
(VC:s in parallel to 2 ohm)
Vb1
Vb2
Port Vb2
19,12
12,02
1 x6,8 x 17,7 cm
0,67 ft
3
0,42 ft
3
1 x 3" x 7" (US)
F3 Vb1: 40 Hz, Vb2: 80 Hz
Iridium12
(VC:s in parallel to 2 ohm)
Vb1
Vb2
Port Vb2
25,64
17,14
1 x10,2 x 38,5 cm
0,9 ft
3
0,6 ft
3
1 x 4" x 15" (US)
F3 Vb1: 59 Hz, Vb2: 98 Hz
Iridium15
(Single VC, 4 ohm)
Vb1
Vb2
Port Vb2
35,2
50,8
3 x10,2 x 41 cm
1,25 ft
3
1,8 ft
3
3 x 4" x 16,1" (US)
F3 Vb1: 40 Hz, Vb2: 80 Hz
