Revelator
1″ Tweeter

Type Number: D2904/980000

Features:

The Revelator series has for years been celebrated for producing the best sounding electro dynamic transducers in the world. Since ScanSpeak was founded in 1970, the audio engineers and R&D experts working on the line have been on a quest to create drivers that reveal all the sound in recordings, hiding nothing from the listener. This quest has resulted in several revolutionary inventions that remove distortion in the magnet systems and in the moving parts of the speaker. The philosophy is that the sound has to be very dynamic, giving a perfect transient response and providing tonal balance.

In the Revelator tweeters, additional enhancements have been made to reduce distortion and power compression, and to optimize airflow in the chambers, producing several unique tweeter designs.

Driver Highlights: 1" aluminium dome, SD-2 motor, low compression design, non resonant chamber

 

Specs:

Electrical Data

Nominal impedance

Zn

4

ohm

Minimum impedance

Zmin

--

ohm

Maximum impedance

Zo

--

ohm

DC resistance

Re

3.5

ohm

Voice coil inductance

Le

0.01

mH

T-S Parameters

Resonance Frequency

fs

500

Hz

Mechanical Q factor

Qms

--

Electrical Q factor

Qes

--

Total Q factor

Qts

--

Force factor

Bl

2.8

Tm

Mechanical resistance

Rms

--

Kg/s

Moving mass

Mms

0.5

g

Suspension compliance

Cms

--

mm/N

Effective cone diameter

D

--

cm

Effective piston area

Sd

8.5

cm2

Equivalent volume

Vas

--

ltrs

Sensitivity (2.83V/1m)

90

dB

Power handling

100h RMS noise test (IEC)

160

W

Long-term Max Power (IEC 18.3)

--

W

Short Term Max power (IEC 18.2)

--

W

Voice Coil and Magnet Parameters

Voice coil diameter

28

mm

Voice coil height

--

mm

Voice coil layers

--

Height of the gap

--

mm

Linear excursion +/-

0.1

mm

Max mech. excursion +/-

1.5

mm

Flux density of gap

--

mWb

Total useful flux

--

mWb

Diameter of magnet

--

mm

Height of magnet

--

mm

Weight of magnet

--

Kg



Notes:
IEC specs refer to IEC 60268-5 third edition
All ScanSpeak products are RoHS compliant

 

Frequency:D2904/980000

Mechanical Dimensions:

Drawing Dimensions

Outside Diameter

OD

104.5

mm

Flange Thickness

FT

--

mm

Magnet Diameter

MD

73.5

mm

Cutout Diameter

CD

--

mm

Interior Depth

ID

42.8

mm

Hole Diameter

HD

5

mm

Screw Circle Diameter

SD

90

mm

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