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LOWTHER
- Head Line |
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ДИНАМИЧЕСКИЕ
ГОЛОВКИ
LOWTHER
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Компоненты
для построения hi-fi акустических стерео систем,
отвечающих требованиям точного звуковоспроизведения |
СЕРИЯ "А" 100 Вт
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PM6A |
PM7A |
PM2A |
PM5 |
PM4 |
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Overall
Diameter |
23.2
cm |
23.2
cm |
23.2
cm |
23.2
cm |
23.2
cm |
| |
Overall
Depth |
10.5
cm |
11.0
cm |
13.0
cm |
13.0
cm |
15.5
cm |
| |
PCD
Mounting Centres |
20.8
cm |
20.8
cm |
20.8
cm |
20.8
cm |
20.8
cm |
| |
Baffle
Hole cut-out |
19
cm |
19
cm |
19
cm |
19
cm |
19
cm |
| |
Voice
coil diameter |
3.9
cm |
3.9
cm |
3.9
cm |
3.9
cm |
3.9
cm |
| |
Voice
coil impedance (nominal) |
8
or 15 ohm |
8
or 15 ohm |
8
or 15 ohm |
8
or 15 ohm |
8
or 15 ohm |
| |
Air
gap width |
1
mm |
1
mm |
1
mm |
1
mm |
1
mm |
| |
Magnet
type |
Alcomax
3 |
Alcomax
3 |
Alcomax
3 |
Alcomax
3 |
Alcomax
3 |
| |
Flux
density
(I Tesla=10,000 Gauss) |
1.75
Tesla |
1.95
Tesla |
2.1
Tesla |
2.3
Tesla |
2.4
Tesla |
| |
Diaphragm |
Twin
Paper |
Twin
Paper |
Twin
Paper |
Twin
Paper |
Twin
Paper |
| |
Frequency
response |
30
Hz-20kHz |
30
Hz-20kHz |
30
Hz-20kHz |
30
Hz-20kHz |
30
Hz-20kHz |
| |
Nominal
air resonance |
36
Hz |
36
Hz |
36
Hz |
36
Hz |
36
Hz |
| |
Sensitivity
at 1m/1kHz/1 watt |
96
db |
96
db |
97
db |
98
db |
98
db |
| |
Maximum
voice coil travel |
±
1 mm |
±
1 mm |
±
1 mm |
±
1 mm |
±
1 mm |
| |
Shipping
weight |
4.0
kg |
4.0
kg |
6.0
kg |
6.5
kg |
10.0
kg |
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A45 |
A55 |
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Overall
Diameter |
17.4
cm |
17.4
cm |
| |
Overall
Depth |
10.5
cm |
11.0
cm |
| |
PCD
Mounting Centres |
15.6
cm |
15.6cm |
| |
Baffle
Hole cut-out |
14
cm |
14
cm |
| |
Voice
coil diameter |
3.9
cm |
3.9
cm |
| |
Voice
coil impedance (nominal) |
8
ohm |
8
ohm |
| |
Air
gap width |
1
mm |
1
mm |
| |
Magnet
type |
Alcomax
3 |
Alcomax
3 |
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Flux
density (I Tesla=10,000 Gauss) |
1.75
Tesla |
1.98
Tesla |
| |
Diaphragm |
Twin
Paper |
Twin
Paper |
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Frequency
response |
80
Hz-20kHz |
80
Hz-22kHz |
| |
Nominal
air resonance |
60
Hz |
80
Hz |
| |
Sensitivity
at 1m/1kHz/1 watt |
93
db |
94
db |
| |
Maximum
voice coil travel |
±
1 mm |
±
1 mm |
| |
Shipping
weight |
4.0
kg |
4.0
kg |
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СЕРИЯ "C"
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C45 |
C55 |
PM6C |
PM2C |
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Overall
Diameter |
17.4 cm |
17.4 cm |
23.2 cm |
23.2 cm |
| |
Overall
Depth |
5.6 cm |
5.8 cm |
7.6 cm |
7.8 cm |
| |
PCD Mounting
Centres |
15.6 cm |
15.6 cm |
20.8 cm |
20.8 cm |
| |
Baffle
Hole cut-out |
14 cm |
14 cm |
19 cm |
19 cm |
| |
Voice coil
diameter |
3.9 cm |
3.9 cm |
3.9 cm |
3.9 cm |
| |
Voice coil
impedance (nominal) |
8 or 15
ohm |
8 or 15
ohm |
8 or 15
ohm |
8 or 15
ohm |
| |
Air gap
width |
1 mm |
1 mm |
1 mm |
1 mm |
| |
Magnet
type |
Feroba
2 |
Feroba
2 |
Feroba
2 |
Feroba
2 |
| |
Flux density
(I Tesla=10,000 Gauss) |
1.75 Tesla |
1.98 Tesla |
1.75 Tesla |
2.1 Tesla |
| |
Magnet Ring Diameter |
120 mm |
134 mm |
120 mm |
152 mm |
| |
Diaphragm |
Twin Paper |
Twin Paper |
Twin Paper |
Twin Paper |
| |
Frequency
response |
80 Hz-20kHz |
80 Hz-20kHz |
30 Hz-20kHz |
30 Hz-22kHz |
| |
Sensitivity
at 1m/1kHz/1 watt |
93 db |
94 db |
95 db |
97 db |
| |
Maximum
voice coil travel |
± 1 mm |
± 1 mm |
± 1 mm |
± 1 mm |
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Resonant
Frequency - Fs |
60 Hz |
60 Hz |
36 Hz |
36 Hz |
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Electrical
Q - Qes |
0.291 |
0.291 |
0.291 |
0.291 |
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Mechanical
Q - Qms |
2.074 |
2.074 |
4.128 |
4.128 |
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Total Q
- Qts |
0.255 |
0.255 |
0.272 |
0.272 |
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Compliance
Volume - Vas |
45.44 litres |
45.44 litres |
62.25 litres |
62.25 litres |
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Emissive
Piston Area - Sd |
0.01055
Sq metres |
0.01055
Sq metres |
0.0210
Sq metres |
0.0210
Sq metres |
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Voice Coil
DC Resistance - Re |
7.1 or
13 ohm DC |
7.1 or
13 ohm DC |
7.1 or
13 ohm DC |
7.1 or
13 ohm DC |
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Reference
Efficiency - No |
3.5% |
3.5% |
3.5% |
3.5% |
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Shipping
weight |
2.75 kg |
3.0 kg |
3.0 kg |
4.0 kg |
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СЕРИЯ "DX"
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DX2 |
DX3 |
DX4 |
DX45 |
DX55 |
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Overall
diameter |
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23.2 cm |
23.2 cm |
23.2 cm |
17.4 cm |
17.4 cm |
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Overall
Depth |
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7 cm |
7 cm |
8 cm |
7.0 cm |
7.2 cm |
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Depth from
Rear of Mounting Frame |
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6.4 cm |
6.6 cm |
7.9 cm |
6.4 cm |
6.6 cm |
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PCD Mounting
Centres |
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20.8 cm |
20.8 cm |
20.8 cm |
15.6 cm |
15.6 cm |
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Baffle
hole cut-out |
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19 cm |
19 cm |
19 cm |
14 cm |
14 cm |
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Magnet
Ring Diameter |
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7.6 cm |
9.0 cm |
9.0 cm |
7.6 cm |
9.0 cm |
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Voice coil
diameter |
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3.9 cm |
3.9 cm |
3.9 cm |
3.9 cm |
3.9 cm |
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Voice coil
impedance (nominal) |
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4, 8 or
15 ohm |
4, 8 or
15 ohm |
4, 8 or
15 ohm |
4, 8 or
15 ohm |
4, 8 or
15 ohm |
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Nominal
impedance |
Z |
8 ohm |
8 ohm |
8 ohm |
8 ohm |
8 ohm |
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Minimum
impedance |
Zmin |
7.2 ohm |
7.2 ohm |
7.2 ohm |
7.2 ohm |
7.2 ohm |
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Nominal
Power Handling |
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100W |
100W |
100W |
100W |
100W |
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Air gap
width |
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1 mm |
1 mm |
1 mm |
1 mm |
1 mm |
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Air gap
height |
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5 mm |
5 mm |
5.5 mm |
5 mm |
5 mm |
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Magnet
type |
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'Hi-Ferric'™
Rare Earth |
'Hi-Ferric'™
Rare Earth |
Hi-Ferric'™
Rare Earth |
Hi-Ferric'™
Rare Earth |
Hi-Ferric'™
Rare Earth |
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Flux density
(1 Tesla=10,000 gauss) |
|
1.7 Tesla |
2.0 Tesla |
2.2 Tesla |
1.7 Tesla |
2.0 Tesla |
| |
Diaphragm |
|
Twin-paper |
Twin-paper |
Twin-paper |
Twin-paper |
Twin-paper |
| |
Frequency
response |
|
30 Hz -
20 kHz |
30 Hz -
22 kHz |
30 Hz -
22 kHz |
80 Hz -
20 kHz |
80 Hz -
22 kHz |
| |
Nominal
air resonance |
|
36 Hz |
36 Hz |
36 Hz |
60 Hz |
80 Hz |
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Sensitivity
at 1m/1kHz/1watt |
|
97 db |
98 db |
99.5 db |
93 db |
94 db |
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Maximum
voice coil travel |
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± 1 mm |
± 1 mm |
± 1 mm |
± 1 mm |
± 1 mm |
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Suspension
compliance |
Cms |
993.888
uM/N |
993.888
uM/N |
993.888
uM/N |
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Total Q
Factor |
Qts |
0.246 |
0.247 |
0.249 |
0.326 |
0.320 |
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Electrical
Q Factor |
Qes |
0.22 |
0.22 |
0.22 |
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Mechanical
Q Factor |
Qms |
3.11 |
3.11 |
3.11 |
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Effective
Moving Mass Kg. |
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0.0115 |
0.0115 |
0.0115 |
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Shipping
weight |
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2.0 kg |
2.5 kg |
3.0 kg |
2.0 kg |
2.5 kg |
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EX2 |
EX3 |
EX4 |
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Overall
diameter |
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23.2 cm |
23.2 cm |
23.2 cm |
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Overall
Depth |
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8.5 cm |
8.5 cm |
8.5 cm |
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Depth from
Rear of Mounting Frame |
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6.4 cm |
6.6 cm |
7.9 cm |
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PCD Mounting
Centres |
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20.8 cm |
20.8 cm |
20.8 cm |
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Baffle
hole cut-out |
|
19 cm |
19 cm |
19 cm |
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Magnet
Ring Diameter |
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7.6 cm |
9.0 cm |
9.0 cm |
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Voice coil
diameter |
|
3.9 cm |
3.9 cm |
3.9 cm |
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Voice coil
impedance (options) |
|
4, 8 or
15 ohm |
4, 8 or
15 ohm |
4, 8 or
15 ohm |
| |
D.C. resistance |
Zmin |
7.2 ohm |
7.2 ohm |
7.2 ohm |
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Nominal
Power Handling |
|
100W |
100W |
100W |
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Emission
piston area |
Sd |
0.021M? |
0.021M? |
0.021M? |
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Air gap
width |
|
900 microns |
900 microns |
900 microns |
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Air gap
height |
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5 mm |
5 mm |
5.5 mm |
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Magnet
type |
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'Hi-Ferric'™
Rare Earth Neodymium |
'Hi-Ferric'™
Rare Earth Neodymium |
Hi-Ferric'™
Rare Earth Neodymium |
| |
Flux density
(1 Tesla=10,000 gauss) |
|
1.75 Tesla |
2.1 Tesla |
2.2 Tesla |
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Diaphragm |
|
Twin-paper |
Twin-paper |
Twin-paper |
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Frequency
response |
|
30 Hz -
20 kHz |
30 Hz -
22 kHz |
30 Hz -
22.5 kHz |
| |
Nominal
air resonance |
|
36 Hz |
36 Hz |
36 Hz |
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Sensitivity
at 1m/1kHz/1watt |
|
97 db |
98 db |
99 db |
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Maximum
voice coil travel |
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± 1 mm |
± 1 mm |
± 1 mm |
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Suspension
compliance |
Cms |
993.888
uM/N |
993.888
uM/N |
993.888
uM/N |
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Total Q
Factor |
Qts |
0.260 |
0.245 |
0.220 |
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Electrical
Q Factor |
Qes |
0.22 |
0.22 |
0.22 |
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Mechanical
Q Factor |
Qms |
3.11 |
3.11 |
3.11 |
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Effective
Moving Mass Kg. |
|
0.0115 |
0.0115 |
0.0115 |
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Shipping
weight |
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3.0 kg |
3.0 kg |
3.5 kg
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© n-audio.com 2004-06
Designed by BEStudio © 2006 |
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