Arcosia 28-1 Soft Dome Tweeter
Arcosia 28-1 Soft Dome Tweeter
Arcosia 28-1 Soft Dome Tweeter
Arcosia 28-1 Soft Dome Tweeter
Arcosia 28-1 Soft Dome Tweeter

Features

91 dB SPL
91 dB SPL

Efficiency

2 kHz - 20 kHz
2 kHz - 20 kHz

recommended frequency range

1.1" | 28mm
1.1" | 28mm

dimensions

Silk
Silk

Membrane material

±0.5 mm
±0.5 mm

linear motion

Features

91 dB SPL
91 dB SPL

Efficiency

2 kHz - 20 kHz
2 kHz - 20 kHz

recommended frequency range

1.1" | 28mm
1.1" | 28mm

dimensions

Silk
Silk

Membrane material

±0.5 mm
±0.5 mm

linear motion

Vendor:ETON Soundsysteme GmbH

Arcosia 28-1 Soft Dome Tweeter

Der ETON Arcosia 28-1 ist ein Softdome-Hochtöner aus der ETON Lautsprecher Manufaktur – entwickelt für audiophile DIY-Lautsprecher-Projekte, die keinen Kompromiss beim Klang kennen. Die handaufgetragene, hochabsorbierende Beschichtung der Gewebekalotte ist das Herzstück dieses Treibers: Sie sorgt für ein neutrales, feines und warmes Klangbild, das selbst anspruchsvollste Hörer überzeugt.

Das großzügig eingekoppelte Volumen senkt die Resonanzfrequenz spürbar ab – für eine nahtlose, natürliche Anbindung an den Mitteltonbereich. Die speziell belüftete Schwingspule und die präzise abgestimmte Neodym-Magnetgeometrie (1,63 T) garantieren außergewöhnliche Impulstreue und ein kontrolliertes Schwingungsverhalten – auch bei hohen Pegeln bis 150 W.

Warum der Arcosia 28-1 für Ihr DIY-Projekt?

  • ✦ Handgefertigte Kalottenbeschichtung – jeder Treiber ein Unikat aus der ETON Manufaktur
  • ✦ 28 mm Schwingspule aus CCAW auf Aluminium-Träger – leicht, präzise, schnell
  • ✦ Neodym-Antrieb im Unterhang-System – maximale Kontrolle, minimale Verzerrung
  • ✦ 91 dB Wirkungsgrad – ideal für passive Frequenzweichen-Designs
  • ✦ 8 Ohm Nennimpedanz – kompatibel mit allen gängigen DIY-Verstärker-Topologien
  • ✦ Resonanzfrequenz 390 Hz – tiefe Trennfrequenz möglich, breite Einsatzbandbreite

Ob klassische Bücherregal-Konstruktion, High-End-Standlautsprecher oder modernes Bluetooth-Speaker-Projekt – der Arcosia 28-1 liefert die Hochtonpräzision, die Ihr Lautsprecher-Selbstbau verdient. Kombinieren Sie ihn mit hochwertigen Mittel- und Tieftönern aus unserem Sortiment für ein vollständiges, audiophiles DIY-System.

150 W power handling (IEC 60268-5): Maximum headroom in the entire ETON tweeter range – for high-output high-end systems without compromise.

150 W power handling (IEC 60268-5): Maximum headroom in the entire ETON tweeter range – for high-output high-end systems without compromise.

Soft dome diaphragm: warm, smooth sound with natural spatial imaging – for long listening sessions without fatigue.

Soft dome diaphragm: warm, smooth sound with natural spatial imaging – for long listening sessions without fatigue.

Resonance frequency 390 Hz / 91 dB: Deep resonance for maximum flexibility in crossover frequency, high efficiency for high-efficiency systems.

Resonance frequency 390 Hz / 91 dB: Deep resonance for maximum flexibility in crossover frequency, high efficiency for high-efficiency systems.

110 mm Ø, 36 mm mounting depth, 0.48 kg: Largest format in the ETON soft-dome range – with Le = 0.02 mH for particularly simple crossover design.

110 mm Ø, 36 mm mounting depth, 0.48 kg: Largest format in the ETON soft-dome range – with Le = 0.02 mH for particularly simple crossover design.

In stock, ready to ship
219,00 EURUnit price(219,00 EUR each)

Pairs well with

Fast shipping

Try it risk-free for 30 days

2-year manufacturer's warranty

Made in Germany

The frequency response of the Arcosia 28-1 is the result of consistent engineering work from our loudspeaker manufacturer: In the core working range from 1.5 kHz to 15 kHz, the driver exhibits exceptional linearity with an amplitude deviation of less than ±2 dB – the foundation for neutral, coloration-free high-frequency reproduction that elevates audiophile DIY projects to reference level.

Particularly relevant for loudspeaker DIY builders: The forgiving amplitude response at the lower end of the transmission range allows coupling from approx. 2 kHz – even with steep-slope 2nd or 3rd order filters. This gives you maximum freedom in choosing the midrange driver and significantly simplifies crossover design.

The controlled dispersion behavior at 30° and 60° demonstrates uniform directivity: The driver consistently radiates energy into the room, ensuring stable soundstage imaging and a homogeneous sound picture even off-axis from the listening position. The complete absence of resonance-related peaks in the upper transmission range is no coincidence – it is the direct result of the hand-applied dome coating, which is applied individually to each driver in our workshop.

The impedance curve of the Arcosia 28-1 shows the behavior of a technically sophisticated tweeter. The impedance maximum occurs at the resonance frequency of approx. 390 Hz – well below typical crossover frequencies – providing generous headroom for crossover design.

Above resonance, the driver behaves almost purely resistively over a wide frequency range: the voice coil inductance is exceptionally low at Le = 0.02 mH, keeping the impedance rise toward high frequencies minimal. For the crossover designer, this means a well-behaved, predictable load – simpler filter design, lower phase errors, and more flexibility in component selection.

The smooth, resonance-free curve without dips or peaks in the passband is an indicator of careful acoustic damping of the rear volume as well as tight manufacturing tolerances in the magnet system. The result: a tweeter that performs in practice exactly as the simulation promises.

Product Specification

Dimensions and installation
Total Diameter

110 mm

Volume Lid

85 mm

Total Depth

36 mm

Front Plate Thickness

5 mm

Weight

0,48 kg

Screw Hole Diameter (Screw / Head)

5 mm / 8 mm

Terminal (Negative / Positive)

4,8 mm / 4,8 mm

Voice coil
Diameter

28 mm

Height

2.5 mm

Wire material

CCAW

Carrier material

Aluminum

Winding layers

2

Magnetic drive
Magnetic flux density

1.63 T

Air gap height

3.5 mm

Material

Neodymium

Dimensions

60 mm x 35 mm

Drive system

underhang

Ferrofluid

nein

Technical data
Nominal impedance

Zn = 8 Ohm

DC resistance

Re = 6.7 Ohm

1 W resonance frequency

fr = 390 Hz

TSP resonance frequency

fr = - Hz

Suspension compliance

Cms = - mm/N

Mechanical quality factor

Qms = -

Electrical quality factor

Qes = -

Total quality factor

Qts = -

Mechanical resistance

Rms = - kg/s

Total moving mass (including moving air mass)

Mmd = 0.31 g

Effective radiating area

Sd = 9.5 cm²

Voice coil inductance

Le = 0.02 mH

Force factor

BLxl = 5.0 Tm

Electrical Xmax

+/- 0.5 mm

Mechanical Xmax

+/- 1.8 mm

Equivalent volume

Vas = - dm³

Average sound pressure level 1 W / 1 m

91 dB SPL

Power handling

150 W*


*IEC 60268-5

Downloads

Technical Datasheet Arcosia 28-1 Tweeter

FAQs

Frequently asked question

Use this text to answer questions in as much detail as possible for your customers.

Frequently asked question

Use this text to answer questions in as much detail as possible for your customers.

Frequently asked question

Use this text to answer questions in as much detail as possible for your customers.

Frequently asked question

Use this text to answer questions in as much detail as possible for your customers.

Frequently asked question

Use this text to answer questions in as much detail as possible for your customers.