Duntech Sovereign SIGNATURE Edition (Only few sets ever made)
Original price was: R180,000.00.R72,000.00Current price is: R72,000.00.
SPECIFICATIONS
Electrical
Frequency Response Measured at 3.5M (11.5ft) on the tweeter axis |
27Hz-20KHz ±2dB |
Efficiency Referenced at 1M (3.3 ft) on tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) |
90dB SPL |
Nominal Impedance Variance |
4 ohms 3.0-4.5 |
Power Rating Peak power for 10 mS | 1000 watts |
Recommended Amplifier Power Minimum RMS per channel |
100 watts |
Pulse Coherency Factor Propagation time error at 3.5M (11.5 ft) on tweeter axis |
Less than 20µS |
Harmonic Distortion Referenced at 1M (3.3 ft) on the tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) |
Less than 0.3% THD above 50Hz |
Relative Phase Variation Versus Frequency Varies less that ±25 deg |
80Hz-18KHz |
Crossover First order type |
Yes |
Drivers Woofers Bass Mid Tweeter |
2x300mm (12″) 2x175mm (7″) 2x54mm (2″) 1x19mm (3/4″) |
Input Terminals Gold plated and accepts banana, spade or cable connections |
Yes |
Bi-Wiring | Yes |
Passive Bi-Amplification | Yes |
Footnote: All measurements taken at ambient temperature of 23°C (72°F)
Mechanical
Finish Brazilian Rosewood Black Oak Jarrah Acoustically transparent black cloth |
Yes Yes Yes |
Size Height Width Depth |
1875mm (74″) 360mm (14″) 862mm (34″) |
Weight Per cabinet |
125Kg (275lbs) |
BRAND |
Duntech |
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MODEL |
Sovereign Signature C-7000 |
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SITE |
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SERIAL NUMBER |
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COLOUR |
Black Oak |
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INCLUDES |
Electronic crossover and power supply |
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AGE |
24 years |
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CONDITION |
8/10 |
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LOCATION |
Portugal |
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WARRANTY |
3 months |
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DESCRIPTION |
Very Rare. Active loudspeakers. External Duntech balanced electronic crossover with PSL-1 power supply (by Simfonia). Specifications: Frequency Response: 27Hz-20KHz, Sensitivity: 90dB, Nominal Impedance: 4 ohms. Drivers: (2) Woofers (300mm-12”), (2) Bass (175mm -7”), (2) Mid (54mm-2”) and (1) Tweeter (19mm -3/4”). Remarks: a) They can be used in either active or passive mode. b) No original package. |
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PRICE NEW |
37500.00 Euros |
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PRICE |
16500.00 Euros |
Description
SOVEREIGN
The Sovereign is the flagship of the Duntech range and acknowledged by experts as the finest loudspeaker in the world, certainly the most accurate.
The Sovereign uses a seven driver system with the drivers symmetrically arranged on a vertical axis and time aligned.
The woofers have rigid magnesium diecast baskets and use PHA cone material. A vented, long throw magnet system reduces air movement noise. These low distortion drivers incorporate hexacoil technology for very high power handling and display excellent linear dynamic response.
The bass drivers feature a large diameter aluminium voice coil and former, a wide dispersion pattern, excellent phase characteristics and fast transient response. The soft domed, mid-range drivers are aperiodically damped and the use of ferrofluid dissipates heat very efficiently. The double chamber tweeter exhibits extremely linear response with low distortion and wide dispersion. The high precision, vented pole plate and pole piece is constructed around a special high-flux ferrite magnet and the textile diaphragm is hand coated.
The crossover is a highly complex, first order type with high power handling. The fibreglass printed circuit board is mounted in it’s own separate cavity. Polypropylene capacitors are used for their stability, high voltage, low loss and low inductance, together with aircore inductors. Resistors are high powered ceramic type.
Input terminals are gold plated on nickel and are an exclusive Duntech Audio design.
The terminals are spaced for easy access and accept a banana, spade or wire connection.
The cabinet is made of custom wood laminated in thickness up to 33mm (1.3″). It is heavily braced with hardwood to reduce resonances and vibration to inaudible levels.
An optimized, sealed enclosure is used to provide accurate reproduction in preference to a vented enclosure which very often produces a woolly or ill-defined sound.
The cabinet is step baffled to provide time alignment. Selected grades and sizes of foam are strategically positioned internally to optimize driver performance.
Each driver is mounted on gaskets in a separate enclosure. Drivers are fixed with hardened steel machine screws in metal threads.
Sound absorbing, organic felt is used extensively to minimize diffraction distortion and is hand tailored to the shape of the cabinet front.
The Sovereign is available in a choice of hand finished, high quality, wood veneers. Customized finished are also available upon request. The grill frame is an integral part of the loudspeaker design and is covered in acoustically transparent black cloth.
In the 80’s Duntech became known as “the most neutral and accurate speakers in the world”. John Dunlavy, the founder and CEO of Duntech unveiled the “Sovereign” in 1987 and the speaker is still a part of the manufacturers´ product line.
Harry Pearson of “The Absolute Sound” (USA), Bert Whyte of Audio Magazine and others were at the time enthusiastic about the speaker, German “Audio” magazine chose it as their reference and it spent several years as number 1 on their “Referenzklasse”-list. I remember reading an article where the Sovereign was compared to a live presentation by guitarist John McLaughlin. The board of listeners were supposedly unable to discern the recorded version from the live one.
John Dunlavy sold his share of Duntech, returned to his native country in 1992 for “family reasons” and set up Dunlavy Audio Labs in Colorado Springs. According to unofficial sources he still owns a 20% share of Duntech, although he no longer participates in the operational or technical work.
Design
The Sovereign is a real “phone booth” in terms of size. In the vertical plane, above and below the 19mm dome tweeter, are located first two 54 mm midrange drivers, then two 175 mm drivers for the upper bass and on the top and at the bottom two 300 mm bass drivers. The drivers are located on a “stepped” front baffle in order to achieve a phase-coherent signal and an accurate impulse response. The goal of the vertically symmetrical driver placement is to achieve a strongly directional signal and reduce the amount of first reflections. The crossover is a first order design.
Sound
Balance: the overall impression is of a neutral tonal character, leaning to the darker side. The impression is more of a slightly warmer sound rather than “cool and sharp”. The lower register certainly isn´t lacking in extension, even the lowest notes are delivered without strain.
Resolution: good throughout the whole frequency range, somewhat “round”, but still quite good.
Transparency: good, although somewhat veiled. Compared to the contemporary level of transparency delivered by (for example) Wilson and Dunlavy, the Sovereign loses out a little. Realism is generally good with the Sovereign. The speaker doesn´t have any real colorations, except for a slightly dark tonal balance, which gives the speaker a “pleasant” character. Instruments and vocals are reproduced naturally without a sense of strain.
Treble/”highs”: in relation to the overall tonal balance, the treble is a bit recessed, but nevertheless very articulate and clean.
Midrange: natural and neutral. All instruments are reproduced without coloration, including the hammer of a grand piano, which sounds excellent. All vocals are free from distortion and colorations.
Bass/”lows”: extended and deep, as well as quite detailed. There is, however, a slight “roundness” and excess warmth in the lower registers.
Dynamics: impressive, although not quite as explosive as some of the bests I have heard.
Spatial information: Good. Due to its large size, the speaker can really draw a picture of a live event, with the appropriate impact. Instruments are precisely located in the soundstage. The speaker is quite picky with placement, demanding some work before the best possible result can be reached.
Visceral impact: Impressive, the music is reproduced on a natural scale, with a lifelike character smaller speakers can´t match. Listening to a speaker like this, you have to wonder if the appropriate scale of a live recording can ever be reproduced correctly by smaller speaker designs.
Conclusion
The overall sound of the Sovereign could be characterised as natural, accurate and free of colorations. In addition to this, the rendering of dynamics and scale are very impressive. As a less positive point, I perceived some softness, or “roundness” in the sound, as well as a level of transparency that isn´t quite up to the level of the best modern designs. On the other hand, the “roundness” is essentially a matter of taste, many listeners will probably like the sound the way it is.
The designer made himself known in the world of high end audio with the Sovereign and the smaller Princess. The Sovereign is, regardless of its increasing age, a world-class reference speaker and a true classic, like the Quad ESL-63 or B&W 801 (and others).