|
|
|
|
|
The Story of Chapter Audio
Chapter Audio is a British audio company committed to advanced design and
manufacturing values. Founded in 1999, Chapter products combine innovative and
enduring design concepts whilst implementing technically advanced analogue, digital and
power supply techniques.
Chapter Audio specialises in the production of High End 'no compromise' audio
components, which are part of the CHAPTER brand, developed in conjunction with a
unique collaboration between leading edge teams of designers. Bespoke parts sourced
locally are combined with the best components available globally. The manufacturing
process is highly automated providing consistent and reliable equipment for your pleasure
for many years into the future.
Chapter Audio has swiftly created an impact within the audio industry and amongst
performance-conscious consumers. It promotes a new design awareness in the ever-
changing world of High-End audio without sacrificing its commitment to exemplary
technical standards, both of which have lent it wide recognition and respect.
Chapter Audio is committed to meeting the highest standards in the selection of
components and level of innovation in the circuits that make up its products. Innovation
for the sake of performance, not for the sake of change helps guarantee the maximum
effectiveness of all of its products. By developing the unique Power Factor Corrected
Switch Mode Power Supply, seen in the Chapter One power amplifier, the company can
rightly lay claim to being amongst the top flight of Audio Component Manufacturers in the
world.
Not without reason then, Mike Gregory, Chapter's sales & marketing manager, is reported
to have said, "… music is an art-form deserving the best venues in the world, which often
means small audiences in their own homes". Such performance is no quirk of fate but the
triumph of calculation and perspiration over moderation and compromise. |
|
|
|
|
|
|
|
|
Chapter Two Power Amplifier
來自英國的Chapter Audio所推出一系列擴大機產品均採用實心鋁材質，搭配歐洲風格的簡鍊線條，
外觀一派優雅自然的風格，這裡介紹的Chapter Two後級擴大機，同樣有著雅緻大方。
機箱部分除了鋁金屬材質的誘人光澤，
這款機箱還是Chapter Audio專利的防諧振機箱，
美觀之外另有其音響設計的秘訣。
這款Chapter Audio後級重量僅20公斤，
可別因此以為用料不夠紮實，實際上Chapter Two體態輕盈的秘密在於使用先進的交換式電源，
因此省去傳統電源的重量，
依然能夠提供強勁的電源供應，
這款Chapter Two後級在8 ohms下具備200瓦的輸出。
此外，為方便配合時下常用的Bi-wire接線，Chapter Two具備兩組喇叭輸出端子。
Introduction
The Chapter Two is a new 'state of the art' audiophile two channel power amplifier
incorporating a unique combination of design features coupled with scrupulous attention
to technical detail.
The objective is to provide a product capable of great musicality and realism without
adding any noticeable 'character' of its own. Additionally to be able to drive the most
difficult speaker loads on the market today without compromising stability. By bringing
together engineers and designers with a lifetime's experience in audio and power systems
design we believe this objective has been more than achieved.
A top-flight amplifier should boast exemplary specifications. Indeed the Chapter Two
achieves these but not purely for the sake of 'specmanship'. Hundreds of listening tests
and auditions by recognised audio experts have gone into honing the Chapter Two. The
result - musicality with a first class technical specification.
Chapter Two Amplifier
The amplifier is based around the company's own ‘Nested Loop Technology’ and a lateral
complementary MOSFET output stage. These form a proven, robust and reliable
foundation for the power amplifier design. But, this on its own is not enough to produce
class-leading performance. Further extensive research has gone into refining this topology
to achieve the final result, the Chapter Two.
In order to achieve the low levels of distortion, negative feedback has been carefully
optimised. There is little doubt that negative feed back is a valuable tool. However, there is
a much-misguided debate over its use, abuse and effects. The Chapter Two manages to
combine high levels of negative feedback to achieve technical excellence, without
compromising slew rate or much sought after 'musicality'.
To achieve this, feedback is applied individually around two discrete gain 'blocks',
optimising distortion and noise performance in each one. The use of two gain blocks in
series allows a very linear, low noise, wide bandwidth amplifier without unnecessary
complication.
A list of performance enhancing features appears on page two, but to sum up, what makes
the Chapter Two special is the attention to a myriad of technical details, optimised in part
by through computer simulation of all aspects of the design but also many hours of
research and audition.
Chapter...great expectations in 'state of the art' audio
Chapter Two Power Amplifier Features
-DC servo control allows full performance to less than 1Hz, but crucially the phase of the
Chapter Two does not change more than 7° (5Hz-22.5kHz) compared with up to 45° in
many instances. If the critical phase information is lost, so is bass 'punch', detail and
'drive'.
The Chapter Two bass is extended, fast, controlled and above all, accurate. Whatever your
musical tastes, from classical music to 'garage' or 'rock' the Chapter Two will not fail to
impress.
The DC servo also guarantees minimal DC offset at the speaker terminals, typically less
than 3mV, under all normal operating conditions.
-The wide bandwidth of the amplifier is important in preserving the vital H.F. phase
information essential to stereo soundstaging and realism. The MOSFET output stage was
chosen specifically for its speed of response, further improved by a high-speed driver
stage.
Frequency compensation of the amplifier is achieved in such a way as to allow excellent
phase and gain margin into complex speaker loads without compromising high frequency
phase or power bandwidth.
-Balanced ground layout cancels the ground currents that can cause intermodulation
distortion and crosstalk in a conventional stereo design. This also reduces demands on the
power supply, which helps to achieve a more efficient solution.
-Unique 'split' output circuitry and 4 x WBT 0765 heavy duty output binding posts per
channel maximise the benefit of loudspeaker bi-wiring.
-User friendly back panel, switchable gain and balanced XLR or phono inputs.
-Unique universal input switched mode power supply with power factor correction (PFC)
technology. In addition to improving performance this advanced power supply is 85%
efficient thus helping to conserve world resources.
-Designed with high resolution digital audio formats in mind.
Chapter Two Power Supply
The Chapter Two uses an advanced, double regulated, switched mode power supply to
achieve very high performance coupled with relatively low weight and compact
dimensions.
The power supply incorporates active universal power factor correction (PFC), making it
compatible with future European mains harmonic distortion legislation and allowing
universal operation from any mains voltage between 85 and 265AC at 50-60Hz. Thus total
audio performance is guaranteed anywhere in the world.
In addition the amplifier will ride severe mains 'brown-outs' without audible effect
meaning the quality of the mains supply will not upset your listening enjoyment.
Unique circuitry coupled with expert RF filter design and layout allows the Chapter Two to
meet the most stringent tests for radio frequency emissions including the EN broadcast
specification.
Electrical
Rated Power 200W rms. into 8 ohms, 400W rms into 4 ohms, continuous sine both
channels driven.
Distortion Less than 0.02% THD at rated power and 1KHz, less than 0.05% at rated power
and 20KHz (into 4 - 8 ohms)
IM Distortion Better than -95dB (19+20KHz dual tone test - 1 Khz product at full power)
Signal to Noise Better than 110dB (A weighted) at full power, better than 87dB (A
weighted) ref 1W into 8 ohms
Frequency response 0.5 Hz to 180KHz +0, -3dB
5 Hz to 65KHz +0, - 0.5dB Phase shift Less than +/-7 degrees total from 5 Hz to 22.5KHz
Power consumption Max 1.8kW total at better than 0.95 power factor Fuse rating 10A
anti-surge
Speaker relay time delay 5 seconds typical
Protection Fully electronic with relay speaker disconnect on DC error, short circuit output,
or continuous overload and/or clipping. Fully automatic reset after 5 seconds.
Latching mode entered after 10 retries.
Sensitivity ‘Hi’ mode 26dB
Lo’ mode 20dB (for use in professional applications and with Chapter Audio pre-amp
Switch selectable.
Phase Non inverting, ref XLR pin 2(+) or phono input.
Mechanical
Input sockets 2 x XLR for balanced line operation
2 x Phono for single ended operation (switch selectable)
Output sockets 4 x WBT-0765 4mm binding posts per channel. *Note: Right hand channel
‘return’ is amplifier output ‘live’.
Finish Fully hard anodised aluminium alloy casework and heat-sink assembly. Power on/
off switch and indicator. IEC mains input socket .
Weight Approx. 20 Kg
Size 437 x135 x300 mm (WxHxD) approx.
Note: Although the information given is in good faith, Chapter Audio reserves the right to
improve specifications and details without notice.Gold plated printed circuit boards.
<<-- PRODUCTS
|
|
|
|
|
|
對不起，您必須在留言前Login
按這裡 login
|
|
|
|
|
