Ayre P-5XE Manuel utilisateur
Ayre P-5xe
Owner’s Manual
MC/MM Phono Preamplifier
Table of
Contents
Welcome to Ayre . . . . . . . . . . . . . . . . . . . . . . . 2
Connections and Installation . . . . . . . . . . . . . . . . . . . . 3
Controls and Operation. . . . . . . . . . . . . . . . . . . . . 6
Optimization and Customization . . . . . . . . . . . . . . . . . . 9
Numbers and Specifications . . . . . . . . . . . . . . . . . . 15
Statement of Warranty . . . . . . . . . . . . . . . . . . . . 16
A Place for Notes . . . . . . . . . . . . . . . . . . . . . . 19
Welcome to
Ayre
Your Ayre P-5xe offers a significant advance in the
musical performance of high-fidelity equipment.
The warmth and immediacy of a live performance
are apparent from the first listening. The
combination of superb resolution and a natural,
relaxed quality will draw you into the music, time
and time again.
This level of performance has been implemented
using the highest level of workmanship and
materials. You can be assured that the Ayre P-5xe
will provide you a lifetime of musical enjoyment.
To our North American customers, please be
sure to mail your warranty registration card and
photocopy of your original sales receipt within 30
days in order to extend the warranty to five
years.
2
Connections and
Installation
The Ayre P-5xe is easy to connect and use. The
following guidelines will ensure that the installation
goes smoothly.
Location
A good location for your phono preamplifier is in a
cabinet or on a shelf. Please note that the high-gain
circuitry required to amplify the low-level signal
from a phono cartridge may be sensitive to the
magnetic fields from transformers in other
equipment.
It is recommended to maintain a distance of 10"
to 20" (25 cm to 50 cm) to other components to
minimize hum levels.
Inputs
The balanced configuration
yields maximum sonic
performance with minimum
noise and hum.
As the phono cartridge is an inherently balanced
device, the Ayre P-5xe offers balanced inputs via
XLR connectors. Since most tone arms and/or
turntables are not currently equipped with XLR
3
connectors, there are two choices for making the
proper connection:
1) Use custom phono cables with XLR connectors at
the phono preamplifier end and the appropriate
connector (RCA or DIN, depending on the
particular installation) at the turntable end. This is
the preferred solution and offers the highest level of
sound quality, or;
2) Use the existing cables with RCA connectors to
connect to the unbalanced inputs of the P-5xe.
Custom phono cables with XLR connectors for
balanced operation are available from your local
Ayre dealer.
A small toggle switch near the input connectors
configures the circuit for either the balanced or
unbalanced inputs.
Only one set of inputs (balanced or
unbalanced) may be connected at a
time.
4
Input
Output
Input
Output
P-5x Phono Preamplifier
A y r e
Boulder, Colorado USA
S.N.
Volts
50/60 Hertz
10 W Max
UnbalUnbal
47k
100 1000
47k
1000 100
Gain Settings Inside
BalBal
Outputs
The Ayre P-5xe offers one pair of balanced (XLR)
outputs and one pair of unbalanced (RCA) outputs.
Although both sets of outputs are always active
regardless of which input (balanced or unbalanced)
is used, it is normally recommended to only use one
set of outputs at a time.
Note that the level of the unbalanced outputs will
be 6 dB lower than the balanced outputs.
AC Power
The phono preamplifier draws
only a small amount of power
and is designed to be left on at
all times.
Connect the Ayre P-5xe to an unswitched AC power
source. The front panel LED will glow blue to
indicate that the unit is powered. Although
proprietary RFI (radio-frequency interference)
filtering is built into the CD player, in some
situations an AC power-line filter (such as those
offered by Ayre) may provide additional sonic
benefits.
5
Controls and
Operation
The Ayre P-5xe offers the ultimate in flexibility and
performance for all types of phono cartridges.
Low-noise FET circuitry provides ultra-quiet
operation even with the lowest output cartridges.
Both gain and loading are easily adjustable to
accommodate both moving coil and moving magnet
designs.
Setting the Gain
Ayre’s exclusive zero-feedback design allows for a
wide range of signal gain, without the need for
step-up transformers or extra gain stages. Changing
the gain is easily accomplished with jumper blocks
inside the unit.
Disconnect the AC power before
removing the cover of the unit.
To access the gain adjustments, remove the 10
screws on the top cover using a 5/64" (2 mm) hex
wrench.
6
Suggested gain settings are:
Cartridge Gain Gain to Out
Output Setting Bal/Unbal
> 3 mV Low 50/44 dB
1 – 3 mV Med* 60/54 dB
< 1 mV High 70/64 dB
These settings are guidelines only, and variations are
perfectly acceptable. Note that the gain does not
depend on which input is selected (balanced or
unbalanced), but only on which output is connected.
*Factory default setting.
7
Setting the Loading
Cartridge loading can be adjusted with switches on
the rear panel. The loading options built in to the
Ayre P-5xe are 47 kΩ, 1000 Ω, and 100 Ω. There is
a bank of two switches for each channel. When both
switches are in the “Up” position the cartridge load
is 47 kΩ, which is suitable for almost all cartridges.
It is recommended that the
loading not be changed from
47 k when using a
moving-magnet cartridge.
Some moving-coil cartridges will yield better sonic
performance if they are loaded with a lower
impedance. Usually, a lower load impedance results
in a more focused soundstage, with greater image
solidity and less apparent distortion. A higher load
impedance will give a more open sound, with
greater air and life. The final loading value must be
chosen by ear to give the best sound in your
particular system.
Break-In
100 to 500 hours of music
played through the system will
ensure full break-in.
Due to the manufacturing processes used for the
circuit board and capacitors, a break-in period is
necessary for the phono preamplifier to reach its full
performance potential.
8
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