They have a perfectly plane radiating surface thus showing a flat frequency
response.
And the Premiere League of ribbon tweeters: the Air Motion Transformer is
extremely compact, but shows the characteristics of electrostatic drivers
(refer ESS AMT1 in Klang+Ton 3/2001, from page 11).
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Note: you will find more AMTs at Audaphon
or at Audiopur
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ESS AMT-1 (141)
Concertina styled ribbon tweeter with folded diaphragm in order to
radiate even at little movement. Air movement is, therefore, accelerated
considerably. As a result the driver shows an excellent pulse response
with plenty dynamic reserves. Frequency range is 750 Hz to 32 kHz (-6dB),
should, however, be employed only from 1.7 kHz onwards. Efficiency is
98 dB/2.83 V (1m, 4kHz) or 95 dB at 1 Watt. Resonance frequency is at
550 Hz, effective piston radiating area Sd is 42 cm2 and DC resistance
is 3.2 Ohm. A paper about this driver can be found in Hobby HiFi 5/2002.
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|
ai-amt1 |
from 1.7 kHz |
 - not available |
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ESS AMT-2 (75)
This small AMT by the US manufacturer ESS, shows a remarkable sensitivity
of 95 dB in conjunction with wide frequency range from 2.5 kHz to 30
kHz. Resonance frequency is at 1.4 kHz, DC resistance is 4.1 Ohm, effective
piston radiating area Sd is 40 cm2. Dimensions: 90 x115 mm, required
cut-out: 73 x 86 mm.
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|
ai-amt2 |
from 2.5 kHz |
- not available |
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|
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ETON ER 4
Concertina styled ribbon tweeter with
folded diaphragm in order to radiate even at little movement. Air movement
is, therefore, accelerated considerably. As a result the driver shows
an excellent pulse response with plenty dynamic reserves. This driver
may be employed from 1.5 kHz, has a resonance frequency of 450 Hz, an
impedance of 6 Ohm and 92 dB SPL.
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| I-750615 |
from 1.5 kHz |
- not available |
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Note: you will find more ribbons at Audaphon
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Visaton MHT 12
Magnetostat from 1.5 kHz, on principle superior to dome tweeters. SPL
is 91 dB, impedance 8 Ohm, resonance frequency -, rated power handling
150 Watt with 12 dB crossover from 3 kHz. The casing is square (111
x 111 mm) with slanted corners requiring a circular cut-out of 94 mm
diameter.
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| V-1080 |
from 1.5 kHz |
EUR 279,60  excl. VAT: € 234.96 / $ 256.10 |
| |
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Audaphon Neo CD 3.0
Circular ribbon tweeter by Audaphon with a frequency range up to 40 kHz.
Equipped with strong Neodym magnet; efficiency 95 dB (1W/1m); recommended
from 2.5 kHz with 12 dB/octave crossover; dimensions: 110 mm for a circular
cut-out of 86 mm; front plate gauge: 4.5 mm.
This ribbon is solidly built. Selected pairs are supplied when 2 unit
are ordered.
PDF data sheet
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Audaphon Neo CD 3.0
with aluminium front |
2,5-40 kHz |
- not available |
| |
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Audaphon Neo CD 2.0
Rectangular ribbon tweeter by Audaphon
extremely sturdy ribbon tweeter with remarkable efficiency of 98 dB.
Impedance is 6 Ohm, front plate made of 4.5 mm aluminium, almost flat frequency response
from 1.7-25 kHz, outer dimensions 185 x 85 mm for a cut-out of 146 x 61 mm,
countersunk depth: 4,5 mm.
This ribbon is solidly built. Selected pairs are supplied when 2 unit are
ordered.
PDF data sheet
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Audaphon Neo CD 2.0
with aluminium front |
2-40 kHz |
- not available |
| |
 |
Audaphon JP 2.0
Like Audaphon Neo JP 2.0, but with a very light 0,009 mm ribbon
for a sophisticated sound. frequency response from 1.7 to 40 kHz;
with remarkable efficiency of 98 dB (1W/1m); should be employed from
2 kHz onwards with 18 dB crossover.
Outside dimensions 185 x 85 mm for a cut-out of 146 x 61 mm.
countersunk depth: 4,5 mm.
This ribbon is solidly built. Selected pairs are supplied when 2 unit are
ordered.
PDF data sheet
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Audaphon JP 2.0
with black aluminium front |
2-40 kHz |
- not available |
| |
 |
Audaphon Neo Pro 5i
Rectangular ribbon tweeter by Audaphon
extremely sturdy ribbon tweeter with remarkable efficiency of 102 dB.
Impedance is 6 Ohm, front plate made of 6.5 mm aluminium, frequency response
from 850 Hz-40 kHz, outer dimensions 190 x 115 mm for a cut-out of 166 x 91 mm,
countersunk depth: 6.5 mm.
This ribbon is solidly built. Selected pairs are supplied when 2 unit are
ordered.
PDF data sheet
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Audaphon Neo Pro 5i
with black aluminium front |
1-40 kHz |
EUR 399,00  excl. VAT: € 335.29 / $ 365.47 |
| |
|
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Hi-Vi Research RT-1c
Ribbon tweeter reviewed by Klang+Ton 8-9/200. Frequency range 3 to
22 kHz, impedance is 6 Ohm, efficiency 91.5 dB (1W/1m); outside diameter
122 mm, required cut-out: 90 x 75 mm (HxW) diameter.
|
| E-RT-1c |
4-22 kHz |
EUR 126,00  excl. VAT: € 105.88 / $ 115.41 |
| |
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Hi-Vi Research RT-2c
Kapton polyamide film in neodymium / barium magnets. The frequency
response in the range from 1.7-21 kHz is perfectly flat. The ribbon
shows an ideal excursion. Impedance is 8 Ohm, efficiency 93 dB (1W/1m),
outside dimension 179 mm diameter for a cut-out of 158 x 66 mm (HxW).
|
| E-RT-2c |
1.8-22 kHz |
EUR 189,00  excl. VAT: € 158.82 / $ 173.12 |
| |
|
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Hi-Vi Research RT-1
Ribbon tweeter with linear frequency response in the range from 4 kHz
to 40 kHz, useable from 4.7 kHz, efficiency 93 dB, DC resistance 6 Ohm,
outside dimensions (HxW) 130 x 102 mm, required cut-out 75 x 90 mm,
countersunk depth: 3 mm
|
| E-RT-1 |
4.7-40 kHz |
- not available |
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|
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Hi-Vi Research RT-4pro
Ribbon tweeter with linear frequency response in the range from 3 kHz
to 40 kHz, useable from 3.8 kHz, efficiency 94 dB, DC resistance 5.8
Ohm, outside dimensions (HxW) 100 x 130 mm, required cut-out 74 x 89
mm, countersunk depth: 6 mm
|
| E-RT-4pro |
3.8-40 kHz |
EUR 130,00 excl. VAT: € 109.24 / $ 119.08 |
| |
|
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Expolinear RT-7 Pro
Ribbon tweeter with linear frequency response in the range from 2 kHz
to 40 kHz, useable from 1.8 kHz, efficiency 100 dB, DC resistance 6.77
Ohm, outside dimensions (HxW) 167 x 221 mm, required cut-out 175 x 65
mm, countersunk depth: 5 mm
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| E-RT-7pro |
1.6-40 kHz |
- not available |
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|
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Expolinear ARL-81
Aluminium ribbon tweeter, revised version of HRA-532, with somewhat
higher efficiency, outside dimensions: 118 mm circular, required cut-out:
86 x 96 mm (HxW)
|
| W-R8 |
Newform
Research
RIB 8 |
8'' ribbon tweeter by Newform Research in Canada, power handling 20 Watt RMS
(i.e. definitely useable in a loudspeaker of 100 Watt continuous from
1.5 kHz), frequency range 1.2 to 20 kHz +/- 3dB, impedance 11 Ohm, SPL
85 dB |
from 1.5k |
not available anymore |
| W-R15 |
Newform
Research
RIB 15 |
15'' ribbon tweeter by Newform Research in Canada, power handling 40
Watt RMS (i.e. definitely useable in a loudspeaker of 125 Watt continuous
from 1.5 kHz), frequency range 1.1 to 18 kHz +/- 3dB, impedance 5.5 Ohm,
SPL 87 dB |
from 1.2k |
EUR 396.25 |
| E-RT8-R |
Philips/
Isophase
AD 11700/RT 8 |
Oval ribbon tweeter, frequency response below a 30 degree angle is not
absolutely flat. The wider part of the oval diaphragm causes a somewhat
directional radiation, a shortcoming that doesn't occur in the following
Philips / Isophone ribbon tweeters. DC resistance is 7 Ohm, efficiency
91 dB (1W/1m), a small resonance at 3.3 kHz, outside dimensions (HxW):
95 x 95 mm, required circular cut-out: 86 mm diameter. |
3.5k-30k |
not available anymore |
| E-RT8-E |
Philips/
Isophase
0021601/RT 8
appearance
similar to RT 8P
|
Rectangular ribbon tweeter with wide sound dispersion, frequency response
is flat, ideal diaphragm excursion, DC resistance is 7 Ohm, efficiency
87 dB (1W/1m), no resonance, outside dimensions (HxW): 120 x 135 mm with
a 8.5 mm front plate, required cut-out: 92 x 82 mm (HxW). |
3.5k-30k |
not available anymore |
| E-RT8-P |
Philips/
Isophase
RT 8P
|
Rectangular ribbon tweeter with wide sound dispersion, frequency response
is perfectly flat, ideal diaphragm excursion, DC resistance is 7 Ohm,
efficiency 90 dB (1W/1m), no resonance. Similar to RT 8, however, the
protective grille is removable, the front plate is metal and the ribbon
is a little wider. Outside dimensions (HxW): 120 x 135 mm with a 8.5 mm
front plate, required cut-out: 92 x 90 mm (HxW). |
3.5k-30k |
not available anymore |
| E-RSQ8-P
|
Philips/
Isophase
0041601/RSQ 8P
appearance
similar to RT 8P
|
Rectangular ribbon tweeter with wide sound dispersion, frequency response
is perfectly flat, ideal diaphragm excursion, DC resistance is 4.8 Ohm,
efficiency 92 dB (1W/1m), no resonance. Outside dimensions (HxW): 188
x 210 mm with a 6.5 mm front plate, required cut-out: 92 x 90 mm (HxW). |
from 2k |
not available anymore |