Orchestra 4-612/C8/25 RP
Orchestra 4-612/C8/25 RP
Orchestra 4-612/C8/25 RP
Orchestra 4-612/C8/25 RP

Features

88 dB SPL
88 dB SPL

Efficiency

80 Hz - 5 kHz
80 Hz - 5 kHz

recommended frequency range

4" | ±100mm
4" | ±100mm

dimensions

Paper
Paper

Membrane material

±2 mm
±2 mm

linear motion

Features

88 dB SPL
88 dB SPL

Efficiency

80 Hz - 5 kHz
80 Hz - 5 kHz

recommended frequency range

4" | ±100mm
4" | ±100mm

dimensions

Paper
Paper

Membrane material

±2 mm
±2 mm

linear motion

Vendor:ETON Soundsysteme GmbH

Orchestra 4-612/C8/25 RP

Der ETON Orchestra 4-612 ist ein 4"-Tiefmittelton-Treiber für audiophile DIY-Projekte, bei denen ein neutraler, harmonisch warmer Klangcharakter und vielfältige Systemintegration gefragt sind. Mit einer Resonanzfrequenz von 68 Hz (TSP), einem Qts von 0,32 und einem außergewöhnlich kleinen Äquivalentvolumen von nur 4,2 dm³ ist der Orchestra 4-612 für kompakte Gehäuse in Bassreflex- und geschlossener Bauweise ausgelegt – und damit der vielseitigste Treiber im ETON Orchestra-Sortiment. Die offene Korbkonstruktion sorgt für eine gute Belüftung des Antriebssystems und ermöglicht eine saubere Integration in 2-Wege-Systeme mit Trennfrequenzen bis 3 kHz.

Die verrippte Papier-Membran (RP) kombiniert ein warmes, organisches Klangbild mit konstruktiver Steifigkeit: Die Rippenstruktur kontrolliert Partialschwingungen und stabilisiert das Ausschwingverhalten. Die 25-mm-Kupfer-Schwingspule auf Kapton-Träger mit 1,15 T magnetischer Flussdichte sorgt für einen kraftvollen, präzisen Antrieb (BL = 6,1 Tm) bei einem Gewicht von nur 1,20 kg. Das kompakte Format (122 mm Ø, 66 mm Tiefe) ermöglicht den Einsatz in platzsparenden Gehäusekonzepten ab ca. 3–6 Litern. Made in Germany, aus der ETON-Manufaktur.

Warum der ETON Orchestra 4-612 für Ihr DIY-Projekt?

  • Vas 4,2 dm³ / Qts 0,32 – kompaktestes Äquivalentvolumen im Orchestra-Sortiment: Gehäuse ab ca. 3 Litern möglich, für Bassreflex und geschlossene Bauweise
  • Verrippte Papier-Membran (RP) – neutraler Klangcharakter mit harmonisch warmen Mitten und solidem Bassfundament
  • BL = 6,1 Tm / 1,15 T – kraftvoller Antrieb für einen 4"-Treiber, präzise Impulswiedergabe im Mitteltonbereich
  • Le = 0,36 mH – niedrige Schwingspuleninduktivität für einfache Weichenauslegung und stabile Last an allen Verstärkern
  • fs 68 Hz / Trennfrequenz bis 3 kHz – breiter nutzbarer Übertragungsbereich für 2- und 3-Wege-Systeme
  • 122 mm Ø, 66 mm Tiefe, 1,20 kg – kompaktestes Format im Orchestra-Sortiment für platzsparende Gehäusekonzepte

Für Projekte, bei denen ein neutraler, harmonisch warmer Klangcharakter, ein kompaktes Format und maximale Systemflexibilität gefragt sind – der ETON Orchestra 4-612 ist der Allrounder im Orchestra-Sortiment. Made in Germany, aus der ETON-Manufaktur.

Vas 4.2 dm³ / Qts 0.32 – Most compact equivalent volume in the Orchestra product range: Enclosures from approximately 3 liters possible, flexible for bass reflex and closed enclosure designs.

Vas 4.2 dm³ / Qts 0.32 – Most compact equivalent volume in the Orchestra product range: Enclosures from approximately 3 liters possible, flexible for bass reflex and closed enclosure designs.

Ribbed paper diaphragm (RP): neutral sound character with harmonically warm midrange – usable from 65 Hz to 3 kHz for 2-way, 3-way, and nearfield monitor projects.

Ribbed paper diaphragm (RP): neutral sound character with harmonically warm midrange – usable from 65 Hz to 3 kHz for 2-way, 3-way, and nearfield monitor projects.

BL = 6,1 Tm / 1,15 T / Le = 0,36 mH: powerful drive with low voice coil inductance – simple crossover design, stable load across all amplifiers

BL = 6,1 Tm / 1,15 T / Le = 0,36 mH: powerful drive with low voice coil inductance – simple crossover design, stable load across all amplifiers

122 mm Ø, 66 mm depth, 1.20 kg – the most compact format in the Orchestra product range: the all-rounder for space-saving high-end projects. Made in Germany.

122 mm Ø, 66 mm depth, 1.20 kg – the most compact format in the Orchestra product range: the all-rounder for space-saving high-end projects. Made in Germany.

In stock, ready to ship
80,00 EUR

Pairs well with

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2-year manufacturer's warranty

Made in Germany

Neutral midrange thanks to paper RP diaphragm – usable from 65 Hz to 3 kHz

The frequency response of the Orchestra 4-612 showcases the performance of a 4" mid-bass driver engineered for maximum system flexibility and a neutral, harmonically warm sound profile: a smooth, controlled amplitude curve from approximately 65 Hz to 3 kHz – with 88 dB efficiency and a stable level response across the entire operating range. The ribbed paper cone (RP) suppresses parasitic vibrations in the upper operating range and stabilizes overshoot behavior – the result is a uniform frequency response free of the typical peaks that many 4" drivers with stiffer cone materials exhibit in the upper midrange. Compared to the larger Orchestra drivers (8-612, 12-612), the operating range of the 4-612 sits significantly higher – it is not a woofer, but a mid-bass driver with a wide usable operating range.

Particularly relevant for DIY speaker builders: The 65 Hz to 3 kHz usable operating range makes the Orchestra 4-612 the most versatile driver in the Orchestra product lineup.

In 2-Wege-System It handles the entire low and midrange up to approximately 2.5–3 kHz and is paired directly with a tweeter – the compact Vas of 4.2 dm³ allows for enclosures ranging from approximately 3–6 liters.

In 3-Wege-System It operates as a dedicated midrange driver between a woofer (crossover point at approximately 200–400 Hz) and a tweeter (crossover point at 2.5–3 kHz). The Orchestra 4-612 is also an excellent choice for nearfield monitor projects.

The uniform frequency response with no dips or peaks across the operating range confirms the quality of the paper RP cone and drive system (BL = 6.1 Tm, 1.15 T). A 4" driver that sounds exactly as it measures – neutral, warm, highly versatile. Made in Germany, from the ETON factory.

Qts 0.32 / fs 68 Hz / Vas 4.2 dm³ – flexible for bass reflex and closed enclosures

The impedance curve of the Orchestra 4-612 demonstrates the performance of a 4-inch mid-bass driver with an exceptionally small equivalent volume: The impedance peak sits at approximately 68 Hz (TSP) – significantly higher than the larger Orchestra drivers (8-612: 26 Hz, 12-612: 30 Hz). The Qts value of 0.32 falls within the boundary range between bass reflex and sealed enclosure tuning, thereby offering maximum flexibility in enclosure design. The equivalent volume of just 4.2 dm³ is the most compact in the entire Orchestra product range, enabling exceptionally small enclosures: A sealed enclosure starting at approximately 2–4 liters delivers controlled, impulse-true reproduction; in a bass reflex enclosure starting at approximately 3–6 liters, the driver achieves its full low-end response.

Above the resonant frequency, the driver operates with electrical stability: Impedance only rises moderately toward high frequencies due to the voice coil inductance (Le = 0.36 mH) – a low value that simplifies crossover design and ensures a stable, predictable load across all standard amplifiers. The 8-ohm design enables effortless drive. The usable frequency range up to approximately 3 kHz makes the Orchestra 4-612 the most versatile driver in the Orchestra product line – as a mid-bass driver in 2-way systems or as a midrange driver in 3-way systems.

The sharply defined impedance peak with no secondary resonances confirms the mechanical precision of the overhung drive system and the quality of the suspension. This 4-inch driver behaves identically in enclosure calculations as it does in simulations – reproducible, reliable, Made in Germany.

Product Specification

Dimensions and installation
Total Diameter

122 mm

Cutout Diameter

96 mm

Total Depth

66 mm

Flange Thickness

6 mm

Weight

1,20 kg

Screw Hole Diameter (Screw / Head)

4,5 mm / 8 mm

Terminal (Negative / Positive)

2,8 mm / 4,8 mm

Voice coil
Diameter

25 mm

Height

10 mm

Wire material

Cu

Carrier material

Kapton

Winding layers

2

Magnetic drive
Magnetic flux density

1.15 T

Air gap height

6 mm

Material

Ferrite

Dimensions

90 mm x 36 mm

Drive system

Overhang

Ferrofluid

nein

Technical data
Nominal impedance

Zn = 8 Ohm

DC resistance

Re = 5.8 Ohm

1 W resonant frequency

fr = 66 Hz

TSP resonant frequency

fr = 68 Hz

Suspension compliance

Cms = 1.00 mm/N

Mechanical Q factor

Qms = 6.78

Electrical Q factor

Qes = 0.34

Total Q factor

Qts = 0.32

Mechanical resistance

Rms = 0.37 kg/s

Total moving mass (including moving air mass)

Mmd = 5.4 g

Effective radiating area

Sd = 55 cm²

Voice coil inductance

Le = 0.36 mH

Force factor

BLxl = 6.1 Tm

Electrical Xmax

+/- 2.0 mm

Mechanical Xmax

+/- 6.8 mm

Equivalent volume

Vas = 4.2 dm³

Average sound pressure level 1 W / 1 m

88 dB SPL

Power handling

40 W*


*IEC 60268-5

Downloads

Technical Data Sheet Orchestra 4612

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