Model Information

[Tranquility Bass]

Duntech Sovereign

It was not called "the world's most accurate loudspeaker" for nothing



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.                                         



                                   
                         

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           Golden Oak           Acoustically transparent black cloth	Yes           Yes           Yes
Size           Height           Width           Depth	1875mm (74")           360mm (14")           862mm (34")
Weight           Per cabinet	125Kg           (275lbs)

A professor could not tell them apart !



"The world's most accurate loudspeaker" a magazine reviewer claimed.

So, a well-known television programme decided to put us to the test.

A professor of musicology sat before a performer and a pair of Sovereigns.

So real was their sound reproduction, the professor couldn't tell where the live performance left off and the recording began.

It was, perhaps, the toughest test any loudspeaker has faced and a very credible indication of the sound quality you can expect from the entire Duntech range.

Yet our engineers continue to push the edge of technology in our quest for perfect sound reproduction.

Visit an authorised Duntech retailer soon and judge our success for yourself.

Review of the Sovereign in Hi-Fi Review (Hong Kong) - 1987

"The Sovereign is the first loudspeaker we have measured and heard which is truly faultless. It is a loudspeaker without peer."

Von Hans Gunther Beer reviews the Sovereign in Audio - August 1987

"The Super Loudspeaker that has shocked the competition. It deserves a top position in our limited Reference-Class and, with an overall rating of 93, beating our previous reference loudspeaker, the BM 40, by a full point. With its near perfect impulse response, it is an ideal loudspeaker for the serious audiophile who wants and can afford the best."

Bert Whyte reviews the Sovereign in Audio (USA) - November 1986

"It is obvious that this is a most extraordinary loudspeaker that deserves recognition as a landmark design...if you can afford them, I believe you are incontestably getting the best."

Review on the Sovereign in Electronics Australia - January 93

"What most audiophiles regard as the best loudspeaker system in the world; the almost legendary Duntech Sovereign.

"I have not heard any loudspeaker system which could out-perform the Sovereigns in terms of spatial localisation..this is as close as you will get to a live recording at home.

"Without hearing them, you will never appreciate just how outstanding these speakers are...sounds that are about as true-to-life as you could hope or want to achieve in a residential situation."

Harry Pearson reviews the Sovereign in The Absolute Sound - September/October 1991

"What it does have, aside from an unusually life-like ability to deploy an orchestra across the expanse of your living room, is the most uncanny ability to suggest...the sound of real bass instruments playing individually or en masse and doing so with the kind of authority you will find chilling..."