The Viscount has a time aligned, three driver arrangement. The bass drivers feature an advanced polymer cone and vented double magnet system. The 75mm (3") voice coil is made of aluminium wire for low moving mass. The tweeter features hand treated, soft domed diaphragm assembly, aluminium voice coil and ferrofluid. All drivers are mounted on gaskets in separate, sealed enclosures. The cabinet is custom wood, laminated in thicknesses up to 68mm (3") for optimum rigidity. All relevant edges are radiused to reduce diffraction. |
The Regent and Baron cabinets, and the stands for the Viscount and Esquire models, come with hardened steel spikes which may be used to minimise motion and increase stability. |
Electrical | Regent | Baron | Viscount | Esquire |
FREQUENCY RESPONCE Mesured at 3.5M (11.5ft) on the tweeter axis | 30Hz - 20KHz ±3dB | 45Hz-20KHz ±3dB | 50Hz-20KHz ±3dB | 55Hz-20KHz ±3dB |
EFFICIENCY Referenced at 1M (3.3ft) on tweeter axis, with an input of 2.83 volts RMS (1 watt at 8 ohms) | 90dB SPL | 92dB SPL | 91dB SPL | 91dB SPL |
NOMINAL IMPEDANCE Variance | 4 ohms 2.8-6.5 | 4 ohms 3.0-6.0 | 4 ohms 3.5-6.5 | 4 ohms 3.5-6.5 |
POWER RATING Peak power for 10mS | 1000 watts | 500 watts | 500 watts | 500 watts |
RECOMMENDED AMPLIFIER POWER Minimum RMS per channel | 80 watts | 40 watts | 30 watts | 30 watts |
PULSE COHERENCLY FACTOR Propagation time error at 3.5M (11.5ft) on tweeter axis | Less than 10µS | Less than 10µS | Less than 10µS | Less than 10µS |
HARMONIC DISTORTION Referenced at 1M (3.3ft) on the tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) | Less than 0.3% THD above 60Hz | Less than 0.5% THD above 70Hz | Less than 0.5% THD above 100Hz | Less that 0.5% THD above 100Hz |
PHASE VARIATION VERSUS FREQUENCY Varies less than ±30 deg | 100Hz to 15KHz | 100Hz to 15KHz | 150Hz to 15KHz | 150Hz to 15KHz |
CROSSOVER First order type | X | X | X | X |
DRIVERS Woofers Bass Mid Tweeter | 2x300mm (11.8") 2x175mm (6.9") 1x25mm (1") | 2x210mm (8.2") 2x100mm (3.9") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") |
INPUT TERMINALS Gold plated, accepts banana, spade or cable connections | X | X | X | X |
BI-WIRING | X | X | X | X |
PASSIVE BI-AMPLIFICATION | X | X | X | X |
FOOTNOTE: All measurements taken at ambient temperature of 23° C (72° F) | ||||
MECHANICAL | ||||
FINISH Satin black top and base, gloss silver trim and acoustically transparent black cloth | X | X | X | X |
SIZE Height Width Depth | 1874mm (74") 366mm (14") 595mm (23") | 1441mm (57") 268mm (11") 355mm (14") | 851mm (34") 268mm (11") 355mm (14") | 651mm (26") 268mm (11") 355mm (14") |
WEIGHT Per cabinet | 73Kg 161lbs | 45Kg 99lbs | 24Kg 53lbs | 18Kg 40lbs |
The Regent and Baron cabinets, and the stands for the Viscount and Esquire models, come with hardened steel spikes which may be used to minimise motion and increase stability. |
Electrical | Regent | Baron | Viscount | Esquire |
FREQUENCY RESPONSE Measured at 3.5M (11.5ft) on the tweeter axis | 30Hz - 20KHz ±3dB | 45Hz-20KHz ±3dB | 50Hz-20KHz ±3dB | 55Hz-20KHz ±3dB |
EFFICIENCY Referenced at 1M (3.3ft) on tweeter axis, with an input of 2.83 volts RMS (1 watt at 8 ohms) | 90dB SPL | 92dB SPL | 91dB SPL | 91dB SPL |
NOMINAL IMPEDANCE Variance | 4 ohms 2.8-6.5 | 4 ohms 3.0-6.0 | 4 ohms 3.5-6.5 | 4 ohms 3.5-6.5 |
POWER RATING Peak power for 10mS | 1000 watts | 500 watts | 500 watts | 500 watts |
RECOMMENDED AMPLIFIER POWER Minimum RMS per channel | 80 watts | 40 watts | 30 watts | 30 watts |
PULSE COHERENCLY FACTOR Propagation time error at 3.5M (11.5ft) on tweeter axis | Less than 10µS | Less than 10µS | Less than 10µS | Less than 10µS |
HARMONIC DISTORTION Referenced at 1M (3.3ft) on the tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) | Less than 0.3% THD above 60Hz | Less than 0.5% THD above 70Hz | Less than 0.5% THD above 100Hz | Less that 0.5% THD above 100Hz |
PHASE VARIATION VERSUS FREQUENCY Varies less than ±30 deg | 100Hz to 15KHz | 100Hz to 15KHz | 150Hz to 15KHz | 150Hz to 15KHz |
CROSSOVER First order type | X | X | X | X |
DRIVERS Woofers Bass Mid Tweeter | 2x300mm (11.8") 2x175mm (6.9") 1x25mm (1") | 2x210mm (8.2") 2x100mm (3.9") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") |
INPUT TERMINALS Gold plated, accepts banana, spade or cable connections | X | X | X | X |
BI-WIRING | X | X | X | X |
PASSIVE BI-AMPLIFICATION | X | X | X | X |
FOOTNOTE: All measurements taken at ambient temperature of 23° C (72° F) | ||||
MECHANICAL | ||||
FINISH Satin black top and base, gloss silver trim and acoustically transparent black cloth | X | X | X | X |
SIZE Height Width Depth | 1874mm (74") 366mm (14") 595mm (23") | 1441mm (57") 268mm (11") 355mm (14") | 851mm (34") 268mm (11") 355mm (14") | 651mm (26") 268mm (11") 355mm (14") |
WEIGHT Per cabinet | 73Kg 161lbs | 45Kg 99lbs | 24Kg 53lbs | 18Kg 40lbs |
The Regent and Baron cabinets, and the stands for the Viscount and Esquire models, come with hardened steel spikes which may be used to minimise motion and increase stability. | Tranquility Bass · Feb 21, 2023 at 3:12 PM[/url]] |
Electrical | Regent | Baron | Viscount | Esquire |
FREQUENCY RESPONSE Mesured at 3.5M (11.5ft) on the tweeter axis | 30Hz - 20KHz ±3dB | 45Hz-20KHz ±3dB | 50Hz-20KHz ±3dB | 55Hz-20KHz ±3dB |
EFFICIENCY Referenced at 1M (3.3ft) on tweeter axis, with an input of 2.83 volts RMS (1 watt at 8 ohms) | 90dB SPL | 92dB SPL | 91dB SPL | 91dB SPL |
NOMINAL IMPEDANCE Variance | 4 ohms 2.8-6.5 | 4 ohms 3.0-6.0 | 4 ohms 3.5-6.5 | 4 ohms 3.5-6.5 |
POWER RATING Peak power for 10mS | 1000 watts | 500 watts | 500 watts | 500 watts |
RECOMMENDED AMPLIFIER POWER Minimum RMS per channel | 80 watts | 40 watts | 30 watts | 30 watts |
PULSE COHERENCLY FACTOR Propagation time error at 3.5M (11.5ft) on tweeter axis | Less than 10µS | Less than 10µS | Less than 10µS | Less than 10µS |
HARMONIC DISTORTION Referenced at 1M (3.3ft) on the tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) | Less than 0.3% THD above 60Hz | Less than 0.5% THD above 70Hz | Less than 0.5% THD above 100Hz | Less that 0.5% THD above 100Hz |
PHASE VARIATION VERSUS FREQUENCY Varies less than ±30 deg | 100Hz to 15KHz | 100Hz to 15KHz | 150Hz to 15KHz | 150Hz to 15KHz |
CROSSOVER First order type | X | X | X | X |
DRIVERS Woofers Bass Mid Tweeter | 2x300mm (11.8") 2x175mm (6.9") 1x25mm (1") | 2x210mm (8.2") 2x100mm (3.9") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") | 2x160mm (6.3") 1x25mm (1") |
INPUT TERMINALS Gold plated, accepts banana, spade or cable connections | X | X | X | X |
BI-WIRING | X | X | X | X |
PASSIVE BI-AMPLIFICATION | X | X | X | X |
FOOTNOTE: All measurements taken at ambient temperature of 23° C (72° F) | ||||
MECHANICAL | ||||
FINISH Satin black top and base, gloss silver trim and acoustically transparent black cloth | X | X | X | X |
SIZE Height Width Depth | 1874mm (74") 366mm (14") 595mm (23") | 1441mm (57") 268mm (11") 355mm (14") | 851mm (34") 268mm (11") 355mm (14") | 651mm (26") 268mm (11") 355mm (14") |
WEIGHT Per cabinet | 73Kg 161lbs | 45Kg 99lbs | 24Kg 53lbs | 18Kg 40lbs |
Frequency Response | 45Hz - 20kHz 2dB |
Efficiency | 89dB SPL |
Impedence | 4 ohms Nominal |
Recommended Amplifier Power | 30w (Transistor) |
Power Rating | 500w (Peak power for 10盜) |
Dimensions | 1238mm High, 308mm Wide, 390mm Deep |
Weight | 52kg |
Finish | Jarrah, Brazilian Rosewood, Black Oak. Other finishes available on request. |
Frequency Response | 30Hz-20kHz |
Efficiency Referenced @ 1m | 89dB SPL |
Nominal Impedance | 4 ohms |
Peak Power Rating Peak power for 10mS | 1000W |
Recommended amplifier power Valve Transistor | 10W 100W |
Pulse Coherency Factor Propagation time error at 3.5m on tweeter axis | <10 µsec |
Harmonic distortion above 50Hz | <0.3% |
Relative phase variations Varies | <± 25° 80Hz - 18kHz |
Crossover is first order type | |
Drivers Bass Mid Tweeter | 2x210mm 2x130mm 1x28mm |
Input terminals | Gold plated 3 way |
Bi-wiring, tri-wiring, bi-amplification, and tri-amplification are provided for | |
Finishes | Queensland Walnut, Rosewood, and Piano Black |
Size Height Width Depth Mass | 1825mm 294mm 597mm 90kg ea |
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) |
Making Waves - Prince The Prince embodies many Duntech firsts... | |
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The Prince features a five driver layout, symmetrically arranged on a vertical axis and time aligned. The bass drivers are formed from a cast and hand coated Kevlar cone material. The voice coil is a long throw design producing the lowest levels of distortion and compression. The midrange drivers are also based on a hand coated Kevlar cone which perfectly matches the bass drivers. The dust cap on this driver incorporates a specially matched diaphragm to ensure smooth high frequency performance for above the crossover point. A symmetrically lathed and vented pole piece is used for both drivers. The basket material is magnesium. The tweeter is based on a diaphragm with a special profile to optimise the high frequency response. A cone shaped pole piece is used to minimise cavity resonances and an additional rear chamber further improves the damping of the tweeter. In front of the tweeter Duntech has mounted a unique acoustic resonance filter to provide unprecedented clarity at high frequencies. At the rear of the speaker a specially controlled tweeter provides reverberant energy in the room to exactly mimic the sound field in a real concert hall. The lower woofer is loaded by a transmission line to provide extremely low frequency output in the listening room. The front of the enclosure is treated with die cut felt of precise properties to suppress the box diffraction effects. The cabinet is made of 25mm thick MDF with extensive bracing throughout. Each driver is accorded its own enclosure. The crossover is a first for Duntech, employing a non-ferrous substrate. The inductors are wound from seven separate strands of wire laid in a computer driven orthocyclic winding. The capacitors are actually constructed from multiple capacitors in each package to provide very fast rise times and low loss factors. The speaker is provided with six sets of terminals for tri- wiring, bi-wiring or normal operation. The Prince is available in a choice of Queensland Walnut, Rosewood or Piano Black. |
Frequency Response | 30Hz-20kHz |
Efficiency Referenced @ 1m | 89dB SPL |
Nominal Impedance | 4 ohms |
Peak Power Rating Peak power for 10mS | 1000W |
Recommended amplifier power Valve Transistor | 10W 100W |
Pulse Coherency Factor Propagation time error at 3.5m on tweeter axis | <10 µsec |
Harmonic distortion above 50Hz | <0.3% |
Relative phase variations Varies | <± 25° 80Hz - 18kHz |
Crossover is first order type | |
Drivers Bass Mid Tweeter | 2x210mm 2x130mm 1x28mm |
Input terminals | Gold plated 3 way |
Bi-wiring, tri-wiring, bi-amplification, and tri-amplification are provided for | |
Finishes | Queensland Walnut, Rosewood, and Piano Black |
Size Height Width Depth Mass | 1825mm 294mm 597mm 90kg ea |
The Marquis also has a time aligned, five driver arrangement. The bass and mid-range drivers have diecast magnesium chassis. The bass drivers use a vented magnet system and feature a special, coated, pulp paper cone. The mid-range drivers are double magnet design and have rubber suspension for low resonance. The double chamber tweeter is dome type, with a fabric diaphragm and ferrofluid for efficient cooling and damping. The cabinet is designed to provide optimum rigidity and its size has been matched to the performance requirements of the drivers. All drivers have separate sealed enclosures. Acoustic felt is matched to the requirements of the loudspeaker and tailored to the geometry of the enclosure. The loudspeaker grill is covered with acoustically transparent cloth and the cabinet is hand finished in high quality wood veneers. |
Electrical | |
Frequency Response Measured at 3.5M (11.5ft) on the tweeter axis | 45Hz-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) | 92dB SPL |
Nominal Impedance Variance | 4 ohms 3.0-6.0 |
Power Rating Peak power for 10 mS | 500 watts |
Recommended Amplifier Power Minimum RMS per channel | 60 watts |
Pulse Coherency Factor Propagation time error at 3.5M (11.5 ft) on tweeter axis | Less than 10µS |
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 0.5% THD above 70Hz |
Relative Phase Variation Versus Frequency Varies less that ±25 ° | 130Hz-15Khz |
Crossover First order type | Yes |
Drivers Woofers Bass Mid Tweeter | 2x210mm (8") 2x100mm (4") 1x25mm (1") |
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 | 1490mm (59") 272mm (11") 469mm (18") |
Weight Per cabinet | 53Kg (117lbs) |