The Future of
Car Audio, According to Pioneer Welcome to the world of Full Digital
Processors and Time Alignment
As
promised, here is Part 2 of our Audio
Klinik, featuring the Pioneer DEX-P9R/DEQ-P9
installation, used in combination with
Reference Series amplifier from with
Reference Series amplifier from Zapco,
and speakers from Eton (Hexacone Technology
series), set up in our 'Dr Audio' Mr
Kho's 300SL.
To get an expert opinion on the quality
of reproduction by this system, we invited
Greg Lyons for a listen.
Setting Up Head Unit - Pioneer DEX-P9 and
DEQ-P9 Digital Signal Processor.
Amplifiers - Two units of ZapcoReference
Series amplifiers (Zopco 200 2X50W and
Zapco 360 4X50W) are used. These give
a total of 6-channel output. Twochannels
for powering a pair of 7-inch woofers.
Two for driving the 5 1/4" mid-range
speakers, and two for the pair of tweeters.
Speakers
- all the speakers used are from the
top range of Eton, a high-end German
speaker maker. This topof the range
series - the Classic Line- features
the Hexacone Technology used on the
construction of the mids.Based on the
honeycomb design, the diaphragm is light
and rigid, offering enhanced response
from better wave dispersion.
The diaphragm of the tweeter is made
of a reason trhat yhis tweeter has one
of the sweetest-sounding repoduction
in the industry.
Wiring A - RCA Cable... Aural Dynamics
Silverline series inteconnect cables
are used thorughout the system. B - Hot Wire... Aura Dynamics
cables are used to connect the speakers. C- Power Supply Cable... Aura
Dynamic 4-gauge cables are used to channel
the power supply to the amplifier.
Tuning
Tuning was done using the built-in digital
electronic X-over digital 30-band equaliser,
as well as the digital time alignment
processor. The RTA was used to confirm
the frequency response.
Why?
The purpose of this installation was
to show that it is possible to expand
the possibilities of the in-car audio
system using full digital processors.
The digital time-alignment function
allows very precise delivery of the
music output from every speaker to the
ears of the listener. The system relies
on the ability of the digital components
to 'align' the arrival time of all speakers
to the listener. The system works by
measuring the distance of the various
speakers to the ears, and from this
data the digital processor will work
out the optimum arrival time of the
outputs of all speakers to the sweet
spot. Several sweet spots can be programmed
into the system tuning. This technology
offers a previously-unattainable degree
of front staging, imaging effect and
music separation, finally meeting the
challenge of overcoming the imperfect
listening environment presented by the
interior of a car. Another benefit is
that there is more freedom in placement
of the speakers.
Cost
RM20,000 only (According to Dr Audio
Mr Kho, it would take about double the
amount of money to achieve the sort
of sound reproduction effect andquality
with conventional components)
For more information, call 'Dr Audio'
Mr Kho at 019 3352029 or 03 40225516
Speakers
- all the speakers used are from the
top range of Eton, a high-end German
speaker maker. This topof the range
series - the Classic Line- features
the Hexacone Technology used on the
construction of the mids.Based on the
honeycomb design, the diaphragm is light
and rigid, offering enhanced response
from better wave dispersion.
