好老啊
1976 price $449/each, frequency response 27-20,000 +/-3dB,etc)
6.5"
Bass-Mid 3" voice coil with 1" tweeter. 13" tall, 9 1/4" wide, 8" deep. $350.00 .
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Price / Performance Breakthrough
The new DUNTECH PCL10 Loudspeaker has been designed to delight music lovers who are on a tight budget or have small listening rooms.
Faithful to DUNTECH design philosophy that has produced products which have won international acclaim, the PCL10 proudly carries DUNTECH quality to its least expensive price point.
The diminutive PCL10 was engineered without compromise to possess all of the characteristics of true DUNTECH 'pulse coherent' loudspeakers - musicality, transient precision and accuracy - all necessary features of a live performance.
Big Sound from a Small Speaker
The PCL10 delivers a sense of scale that is truly amazing for such a small loudspeaker. Even large symphonic works are rendered realistically in space. Exceptionally even tonal balance and a very high resolving power are features of this very revealing loudspeaker.
Finished in stunning Australian Jarrah veneer, the PCL10 will find appeal as an audiophile quality loudspeaker in its own right for both home and professional use.
The PCL10 Loudspeaker is a proud addition to the DUNTECH family of products that are distinguished by a level of documented performance which clearly demonstrates their superiority.
What Makes the PCL10 so Special?
The choice of the very latest technology drive units and first order crossover result in near perfect amplitude and phase response.
Amplitude response is very flat at ?dB from 80Hz to 20kHz, with useful extension below 60Hz (-3dB at 70Hz).
Sensitivity of 85dB and impedance at a well behaved 6 ensures this speaker can be used with a wide range of amplifiers.
Electrical
Frequency Response
Measured at 3.5M (11.5ft) on the tweeter axis 80Hz-20kHz
?2dB - 3db down 70Hz
Efficiency
Referenced at 1M (3.3 ft) on tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) 85dB SPL
Nominal Impedance 6 ohms
Power Rating
Peak power for 10 礢 200 watts
Recommended Amplifier Power
Minimum RMS per channel 60 watts
Pulse Coherency Factor
Propagation time error at 3.5M (11.5 ft) on the tweeter axis Less than
10礢
Phase Variation versus Frequency
Varies less that ?5 deg 150Hz to 15kHz
Varies less than ?0?
Crossover First order type
Drivers
Bass
Tweeter
1x110mm (4.3")
1x10mm (.8")
Input Terminals Gold plated, accepts bonana, spade or cable connections
Bi-Wiring Yes
Passive Bi-Amplification Yes
Mechanical
Finish
Available in Jarrah, Brazilian Rosewood and Black Oak.
Size
Height
Width
Depth
275mm (11")
170mm 6.8")
226mm (9")
Placement Tripod, shelf or stand -
35mm camera tripod fitting standard
Wall mount bracket optional extra
Warranty Five (5) years, subject to Duntech Audio Warranty Policy and return of Warranty Registration Form
Stand Optional
The DUNTECH PCL25 Loudspeaker has been designed for the discerning listener who demands very accurate sound reproduction from a small package. And at an affordable price.
The PCL25 is faithful to the design philosophies that encompass all DUNTECH loudspeakers, and for which Duntech Audio has received international acclaim.
The technology is further enhanced by hand-crafted cabinets, which are finished in authentic timber veneer with acoustically transparent black grille cloth.
What makes the PCL25 better?
The DUNTECH PCL25 Loudspeaker is a two way, three driver design in which the drivers are arranged in a symmetrical fashion along a vertical axis. This creates a simulated point-source radiation pattern.
To achieve proper stereo-imaging and depth, loudspeakers must possess point-source radiation patterns when reproducing music recorded by microphones, which are themselves point-source devices.
Music as is should be heard
The sound from the PCL25 will arrive at your ears simultaneously. It will be low in distortion and sound extremely well-focussed, giving an almost transparent quality. So, the music you hear will create the feeling of "being there", as if your were hearing it played "live".
This is the ultimate benefit of DUNTECH pulse coherent technology... excellent stereo-imaging, depth and clarity.
And, when you consider the price of the PCL25 and the inclusion of a 5 year warranty, it all adds up to a remarkable loudspeaker package.
Time-aligned for greater music accuracy
The three drivers in the PCL25 are accurately time-aligned. This means the radiating centres of the drivers are exactly equidistant at the normal listening distance of 3.5 metres.
Accurate time-alignment of the drivers is one of a number of design features that Duntech has collectively labelled "pulse-coherent". Pulse coherency determines the ability of a loudspeaker to reproduce complex musical sounds without blurring or smearing. It allows a loudspeaker to faithfully reproduce sound as it is heard naturally by the human ear.
Electrical
Frequency Response
Measured at 3.5M (11.5ft) on the tweeter axis 55Hz-20KHz
?dB
Efficiency
Referenced at 1M (3.3 ft) on tweeter axis with an input of 2.83 volts RMS (1 watt at 8 ohms) 89dB SPL
Nominal Impedance 4 ohms
Variance 3.5-6.5
Power Rating
Peak power for 10 礢 500 watts
Recommended Amplifier Power
Minimum RMS per channel 30 watts
Pulse Coherency Factor
Propagation time error at 3.5M (11.5 ft) on the tweeter axis Less than
10礢
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 100Hz
Phase Variation versus Frequency
Varies less that ?5 deg 150Hz to 15Khz
Crossover First order type
Drivers
Bass
Tweeter
2x160mm (6.3")
1x25mm (1")
Input Terminals Gold plated, accepts bonana, spade or cable connections
Bi-Wiring Yes
Passive Bi-Amplification Yes
Footnote: All measurements taken at ambient temperature of 23癈 (72癋)
Mechanical
Finish
Available in Jarrah, Brazilian Rosewood and Black Oak.
Size
Height
Width
Depth
606mm (24")
268mm (11")
350mm (14")
Weight
Per cabinet unpacked
20Kg
(44lbs)
Warranty Five (5) years, subject to Duntech Audio Warranty Policy
Stand Optional
Patrick Vercher reviews the PCL25 in La Nouvelle Revue Du Son (France) - November 1994
"The PCL25 is distinguished by a very quick bass which is forceful and worthy of use in a monitor capacity and rich harmonic structure. It does not produce any frequency doubling, intermodulation distortion, everything is neat, precise and without plastic driver coloration or boxy effects.
"The PCL25 is a high performance electrodynamic loudspeaker system created from rigorous studios and creates a solid, stable stereo image. A level of sound comparable to reality."
Wes Philips reviews the PCL25 in Stereophile - August 1994
"If you think of listening to music as a physical experience, and value the excitement that a commanding physical presence imparts to it, then you must listen to the Duntech PCL25 - it has authority, but not at the expense of timbral accuracy of soundstaging."
Greg Borrowman reviews the PCL25 in Australian Hi-Fi - July 1994
"...the bass that is present is rich, authoritative and always musical.
"While they disdain the cheap trick of artificially extended bass and forward treble that tend to win over novices in the showroom, my first week with Duntech's PCL25s was more than sufficient to reveal their overall integrity, neutrality and transparency."
Duntech PCL25 Speakers
While a handful of Australian budget and mid-price speaker manufacturers plugged away through the '80s to get Australians to overcome our cultural cringe and recognise the quality and cost advantages home-grown speakers, one company, Duntech Audio, went for the empyrean heights of the high-end and took the world by storm. And in wowing the world's audiophiles with the massive, Duntech Sovereign 2000s, (selling for around $US 30,000), they woke Australians up to the possibility that Australian-made speakers could beat huge international companies at their own game.
Since those heady days, when Duntechs were being featured on television shows such as Beyond 2000, the company has undergone extensive corporate reorganisation while all the time continuing to produce excellent speakers of all sizes. The main result of the restructuring has been some far more affordably-priced speakers bearing the Duntech badge.
The latest Duntech offering, from the prestigious Studio Series, is the PCL25. Easing these speakers from their 'bullet-proof' packaging, I was immediately overawed by the magnificent finish of the wide-grain, real Brazilian Rosewood veneer with its perfectly seamless edges and corners. Unusually, the luxurious veneer extends to the back baffle, and the sides, top and bottom are covered in a single sheet of veneer, with a continuous grain pattern.
The PCL25s are dual-woofer two-ways which team two polypropylene-cone woofers from Morel with a Morel 30mm soft-dome tweeter. These are arrayed down the front baffle's centre line in the D'Appolito configuration - with the tweeter placed between the two woofers.
The Morel woofers have effective cone diameters of around 115 mm with an effective cone area of about 104 cm 2, measured from the inside edge of its beefy-looking butyl-rubber roll surround. The central plastic dust cap is about 72 mm in diameter constituting most of the woofer's actual 'piston' area. In the centre of each dustcap is glued a circular pad of felt - a means of damping the woofer.
The tweeter is ruggedly constructed and integrated with its own circular, flared-duct mounting plate of 3 mm steel, firmly Phillips-bolted to taps in the front baffle. The self-cent-ring, hand-treated soft-fabric dome has a diameter of 32 mm and the magnet is enclosed in a damped, vented chamber to lower the resonant frequency and obviate any possible tendency to 'honk'. The aluminium voice coil (on an aluminium former) is surrounded in the gap by magnetic cooling/damping fluid.
The tweeter's double magnet assembly is shielded by a vented steel enclosure integrated with the driver basket: the circular vent stopped with a foam plug to keep dust and dirt at bay.
Removing the Phillips bolts that hold the woofers in place and delving within reveals a double-enclosure cabinet almost filled with dense foam: leaving just enough space for the driver magnets. The 18 mm MDF cabinet is divided in half by an internal MDF baffle immediately behind the tweeter, but a gap of a few centimetres still couples the two compartments. The seals between drivers and baffle are rendered airtight by the use of rubber gaskets and all connections between drivers, terminals and the complex first-order crossover are made with very heavy duty cable.
The front baffle profile is staggered, with the central tweeter panel recessed about 20 mm from the level of the woofer baffle, in order to place the nominal source of all drivers on the same vertical plane and ensure that complex waves from woofer and tweeter arrive at your ears at the same time. Glued to all front surfaces are thick layers of soft blue felt, with the edges of the tweeter aperture felt cut into a twelve-pointed start to further absorb and dissipate early reflections.
Listening Sessions
The Duntech PCL25 speakers came with a pair of sturdy and elegant Duntech stands which supported the PCL25s in style at the appropriate height. They are not purely cosmetic, not solely for positioning convenience: they are one of the few readily available stands big enough and stable enough to support the PCL25s and their design contributes tangibly to the speakers' performance.
Our first impression of the PCL25s was one of total neutrality. In direct comparison with a speaker of a similar size without marked colouration, they made the reference speakers sound very boxy indeed. Bass was not hugely extended - not a great surprise in a smallish sealed enclosure modem - but it's rich, authoritative and always musical. Protracted listening revealed a sense of proportion in the bass by which the PCL25s delivered the bass that was there without gilding the lily. In fact, the sound across the entire spectrum is incredibly well-balanced and impeccably focused. The feeling is one of supreme accuracy: the speakers metaphorically providing a rock-solid stage platform for performers of all genres to give of their best.
While some speakers will slightly recess the lower midrange to emphasise inadequate bass, the Duntech's midrange response was full and smooth, releasing vocalists from their complex backings with their unique personalities intact - some revealing subtleties that had previously eluded us. A good example was the a capella singing of Cafe At The Gates of Salvation (Cotgos CD 001) in which the voices blended perfectly in a warm, human and natural way while retaining all of their individuality.
The shimmering string of the SSO's version on Percy Grainger's version of Danny Boy (ABC 426 298-2) have never sounded better. The gradual crescendo to quite high levels showed no change in tonal balance and the triumphal French horn descant shone like the sun through the mix.
The PCL25s's sound stage is not exaggeratedly wide but it has strong depth and height cues which help rebuild the original venue (or the ersatz creation of the producer) with astonishing tangibility. Response is quick and highly-detailed with never a hint of shrillness or busy-ness, the depth impression giving each instrument and voice a separate space, effectively enhancing the intelligibility of each discrete element. Ambient clues in recordings were not over-emphasised, but where they were a definite feature, the decay into silence of subtle echoes and reverberations created strikingly realistic spaces.
Conclusion
While they disdain the cheap tricks of artificially extended bass and forward treble that tend to win over novices in the showroom, a week with Duntech PCL25s revealed their overall integrity, neutrality and transparency. We were hooked and subsequently forced to plough through our favourite discs to hear what we had been missing. Selling well around the world, the Duntech PCL25s should prove equally popular with Australian audiophiles, who have the added advantage of enjoying the lower costs enabled by local production.
http://www.duntech.com.au/images/all.html
