Orchestra 7-512/C8/32 RP
Orchestra 7-512/C8/32 RP
Orchestra 7-512/C8/32 RP
Orchestra 7-512/C8/32 RP

Features

89 dB SPL
89 dB SPL

efficiency

50 Hz - 3 kHz
50 Hz - 3 kHz

recommended frequency range

7" | ±180mm
7" | ±180mm

dimensions

Paper
Paper

Membrane material

Phase Plug
Phase Plug

Optimized Treble

±5.5 mm
±5.5 mm

linear motion

Features

89 dB SPL
89 dB SPL

efficiency

50 Hz - 3 kHz
50 Hz - 3 kHz

recommended frequency range

7" | ±180mm
7" | ±180mm

dimensions

Paper
Paper

Membrane material

Phase Plug
Phase Plug

Optimized Treble

±5.5 mm
±5.5 mm

linear motion

Vendor:ETON Soundsysteme GmbH

Orchestra 7-512/C8/32 RP

Der ETON Orchestra 7-512 ist ein 7"-Tiefmittelton-Treiber mit Phase Plug für audiophile DIY-Projekte, bei denen ein kontrolliertes Abstrahlverhalten, maximaler Linearhub und eine besonders agile, impulstreue Basswiedergabe gefragt sind. Mit einem elektrischen Xmax von ±5,5 mm – dem höchsten im gesamten ETON Orchestra-Sortiment – und einer CCAW-Schwingspule (Copper Clad Aluminium Wire) mit nur 13,5 g bewegter Masse liefert der Orchestra 7-512 verzerrungsarme, pegelfeste Basswiedergabe mit einer Agilität, die schwerere Kupfer-Schwingspulen nicht erreichen. Der Phase Plug optimiert das Abstrahlverhalten im oberen Mitteltonbereich und ermöglicht Trennfrequenzen bis 2,5 kHz für eine präzise, raumfüllende Klangabbildung.

Die verrippte Papier-Membran (RP) mit einer effektiven Abstrahlfläche von 137 cm² kombiniert ein warmes, organisches Klangbild mit konstruktiver Steifigkeit. Mit einem Qts von 0,35 und einem Äquivalentvolumen von 37,3 dm³ ist der Orchestra 7-512 flexibler bei der Gehäuseauslegung als ein reiner Bassreflex-Treiber: Bassreflexgehäuse ab ca. 25–50 Litern sind möglich, bei optimaler Abstimmung um 32–42 Hz. Die niedrige Schwingspuleninduktivität (Le = 0,60 mH) erleichtert die Weichenauslegung und sorgt für eine stabile Last an allen Verstärkern. Made in Germany, aus der ETON-Manufaktur.

Warum der ETON Orchestra 7-512 für Ihr DIY-Projekt?

  • Xmax ±5,5 mm elektrisch / ±8,8 mm mechanisch – höchster Linearhub im gesamten Orchestra-Sortiment: verzerrungsarme, pegelfeste Basswiedergabe auch bei hohen Lautstärken
  • CCAW-Schwingspule, Mmd = 13,5 g: leichteste bewegte Masse im 7"-Format – agile, impulstreue Wiedergabe mit schnellem Einschwingverhalten
  • Phase Plug: kontrolliertes Abstrahlverhalten im Mittelton, Trennfrequenz bis 2,5 kHz – präzise Raumabbildung und breiter Sweet Spot
  • Qts 0,35 / Vas 37,3 dm³ / fs 39 Hz (TSP): flexibel für Bassreflexgehäuse ab ca. 25–50 Litern, echter Tiefgang bis unter 35 Hz
  • Le = 0,60 mH / BL = 7,2 Tm: niedrige Schwingspuleninduktivität für einfache Weichenauslegung, stabile Last an allen Verstärkern
  • 89 dB / 80 W (IEC 60268-5) / 181 mm Ø / 2,03 kg: hoher Wirkungsgrad und solide Belastbarkeit für dynamische 2- und 3-Wege-Systeme

Für Projekte, bei denen maximaler Linearhub, eine agile CCAW-Schwingspule und ein kontrolliertes Abstrahlverhalten dank Phase Plug gefragt sind – der ETON Orchestra 7-512. Made in Germany, aus der ETON-Manufaktur.

Xmax ±5.5 mm electrical / ±8.8 mm mechanical – highest linear excursion in the entire Orchestra product range: low-distortion, level-stable bass reproduction even at high volumes.

Xmax ±5.5 mm electrical / ±8.8 mm mechanical – highest linear excursion in the entire Orchestra product range: low-distortion, level-stable bass reproduction even at high volumes.

CCAW voice coil, Mmd = 13,5 g – the only Orchestra driver featuring CCAW: lightest moving mass in the 7" format for agile, transient-accurate reproduction with fast settling behavior.

CCAW voice coil, Mmd = 13,5 g – the only Orchestra driver featuring CCAW: lightest moving mass in the 7" format for agile, transient-accurate reproduction with fast settling behavior.

Phase Plug: Controlled midrange radiation behavior, crossover frequency up to 2.5 kHz – precise spatial imaging and a wide sweet spot for 2-way and 3-way systems.

Phase Plug: Controlled midrange radiation behavior, crossover frequency up to 2.5 kHz – precise spatial imaging and a wide sweet spot for 2-way and 3-way systems.

Qts 0.35 / Vas 37.3 dm³ / fs 39 Hz / Le = 0.60 mH: flexible for bass reflex enclosures from approximately 25–50 liters, simple crossover design – 89 dB / 80 W. Made in Germany.

Qts 0.35 / Vas 37.3 dm³ / fs 39 Hz / Le = 0.60 mH: flexible for bass reflex enclosures from approximately 25–50 liters, simple crossover design – 89 dB / 80 W. Made in Germany.

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130,00 EUR

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2-year manufacturer's warranty

Made in Germany

Phase Plug / CCAW / Xmax ±5.5 mm – 89 dB, usable from 34 Hz to 2.5 kHz

The frequency response of the Orchestra 7-512 demonstrates the performance of a 7"-mid-bass driver with phase plug, CCAW voice coil, and the highest electrical Xmax in the ETON Orchestra product lineup: a smooth, controlled amplitude curve from approximately 34 Hz to 2.5 kHz – with 89 dB efficiency and a stable level response across the entire operating range. The phase plug optimizes radiation behavior in the upper midrange and enables cleaner integration into 2-way systems with crossover frequencies up to 2.5 kHz. The CCAW voice coil with just 13.5 g of moving mass provides fast transient response – the frequency response shows no sluggish peaks in the operating range that would indicate excessively high moving mass. The ribbed paper cone (RP) additionally controls parasitic vibrations and stabilizes decay behavior even at high excursions up to ±5.5 mm electrical Xmax.

Of particular relevance to DIY loudspeaker developers: The usable operating range of 34 Hz to 2.5 kHz makes the Orchestra 7-512 the ideal driver for 2-Wege-Systeme with a crossover around 2–2.5 kHz – paired directly with a tweeter, using bass reflex enclosures from approximately 25–50 liters.

In a 3-Wege-System configuration it operates as a mid-bass driver between a woofer (crossover starting around 100–200 Hz) and a tweeter (crossover at 2–2.5 kHz). The Qts of 0.35 delivers a gentler level drop below the resonant frequency than a pure bass reflex driver – enclosure design is flexible and predictable.

The flat frequency response with no dips or peaks across the operating range confirms the quality of the RP paper cone, phase plug, and CCAW voice coil (BL = 7.2 Tm, Le = 0.60 mH). A 7"-driver with phase plug and CCAW that sounds as good as it measures – agile, precise, and consistent level response. Made in Germany, from the ETON factory.

Qts 0.35 / fs 39 Hz / Xmax ±5.5 mm – Phase Plug, CCAW coil, highest linear throw in the product range

The impedance curve of the Orchestra 7-512 demonstrates the performance of a 7-inch mid-bass driver with phase plug, CCAW voice coil, and the highest electrical Xmax in the entire ETON Orchestra product line: The impedance peak sits at approximately 39 Hz (TSP). The Qts value of 0.35 offers greater enclosure flexibility than a standard bass reflex driver with a Qts of 0.30 – bass reflex enclosures from approximately 25–50 liters tuned to 32–42 Hz are possible. The equivalent volume of 37.3 dm³ is the largest in the Orchestra mid-bass product line. The electrical Xmax of ±5.5 mm – the highest in the entire Orchestra product line – confirms that the 7-512 is designed for maximum sound pressure levels and low-distortion bass reproduction even at large cone excursions.

The CCAW voice coil (Copper Clad Aluminum Wire) is the second exclusive feature of the Orchestra 7-512 – it is the only driver in the Orchestra product line with this technology. CCAW combines the electrical conductivity of copper with the low density of aluminum: The result is a moving mass of just 13.5 g – significantly lighter than the copper voice coil of the Orchestra 7-612 (17.3 g). The lower moving mass enables faster transient response and more agile, transient-accurate bass reproduction. The low voice coil inductance (Le = 0.60 mH) further simplifies crossover design and ensures a stable load across all amplifiers.

The cleanly defined impedance peak without secondary resonances confirms the mechanical precision of the overhung drive system and the quality of the suspension. This 7-inch driver with phase plug and CCAW voice coil performs identically in enclosure calculations as it does in simulations – reproducible, reliable, Made in Germany.

Product Specification

Dimensions and installation
Total diameter

181 mm

Cutout diameter

151,5 mm

Total depth

87 mm

Rim thickness

7,5 mm

Weight

2,03 kg

Screw hole diameter (screw / head)

5,2 mm / 9 mm

Terminal (Negative / Positive)

2,8 mm / 4,8 mm

Voice coil
Diameter

32 mm

Height

19 mm

Wire material

CCAW

Carrier material

Kapton

Winding layers

1

Magnetic drive
Magnetic flux density

1.00 T

Air gap height

8 mm

Material

Ferrite

Dimensions

102 mm x 46 mm

Drive system

Overhang

Ferrofluid

nein

Technical data
Nominal impedance

Zn = 8 Ohm

DC resistance

Re = 6.5 Ohm

1 W resonant frequency

fr = 36 Hz

TSP resonant frequency

fr = 39 Hz

Suspension compliance

Cms = 1.42 mm/N

Mechanical quality factor

Qms = 5.27

Electrical quality factor

Qes = 0.38

Total quality factor

Qts = 0.35

Mechanical resistance

Rms = 0.64 kg/s

Total moving mass (including moving air mass)

Mmd = 13.5 g

Effective radiating area

Sd = 137 cm²

Voice coil inductance

Le = 0.60 mH

Force factor

BLxl = 7.2 Tm

Electrical Xmax

+/- 5.5 mm

Mechanical Xmax

+/- 8.8 mm

Equivalent volume

Vas = 37.3 dm³

Average sound pressure level 1 W / 1 m

89 dB SPL

Power handling

80 W*


*IEC 60268-5

Downloads

Technical Data Sheet Orchestra 7512

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