TAG MCLAREN AUDIO PPA20 User manual

input selector
button filter selector
button
mode selector
button
cartridge selector
button
status
indicators power
button
power
LED
mute
input
mc/mm mode
riaa/iec in 1
mcx30
filter
in 2
mcx10
mono
riaa
mm
direct
riaa/iec
left
right
left
0 dB
left
right
signallevel
left
right
signal 12
serial
number
ground
220-240V
~50-60Hz
Fuse: T1A L250V
made in United Kingdom
OUTPUT PHONO
12 3 4right left right load load
-20 dB
transformer
balanced
(option)
transformer
balanced
(option)
transformer
balanced
(option)
transformer
balanced
(option)
fuse
carrier output level
button phono input
sockets
XLR output
(optional)
ac supply
socket
output
sockets
ground
terminals
PPA 1234567
02 welcome
08 key features
10 getting started
12 inputs
14 selecting the cartridge type
17 muting
18 filter and mono settings
21 grounding
23 outputs
25 special input loading
28 running in and warming up
29 interference
30 care and maintenance
32 technical data
36 international standards
contents
Specification shown may vary for different countries
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 1

03
Now,this blend of talent and
expertise has been combined
with the award-winning
experience ofAudiolab to create
a company with a technical
advantage and access to
resources second-to-none in the
high end audio industry -
TAG McLarenAudio.
TAG McLarenAudio has been created with
one aim in mind:to produce the best high-
fidelity audio and audio-visual systems
available.Now the first fruits of that
alliance are ready – a unique new range of
audio products.
Throughout the F3 Series development
process,quality,performance and
reliability have been paramount,resulting
in unparalleled performance, operational
excellence and sheer listening pleasure.
celebrating a TAG McLaren victory
All TAG companies perpetually strive
for,and achieve,excellence and high-
performance in every area of their
business.
These qualities are demonstrated in the
fastidious standards that makeTAG Heuer
watches some of the world’s most
admired;in the teamwork that makesTAG
McLaren’s motor racing team one of the
most successful in Formula One;and in the
advanced electronics technology that
makesTAG Electronic Systems the first
choice for many Formula One constructors
and high-performance car makers.
Derek Scotland (on the left) – Technical Director
Peter Stevens – Chief Industrial Designer
Dr. Zucker – Chief Executive
welcome to a new partnership
..in hi-performance, hi-fidelity
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 3

We are convinced it will give you many hours o
listening pleasure.
The PPA20 is dedicated to those who want to get the very
best out of their vinyl records. It can accept the output of two
turntables and includes the capability to fine tune the signals
of both independently.The PPA20 also has switchable filters
to enhance your enjoyment of older records which may be
damaged or were recorded using non-standard equalisation.
RIAA / IEC requency response
The frequency response of the PPA20 meets
the RIAA specification,and a switchable low-
frequency (‘rumble’) filter is included which
meets the IEC specification.An additional
switchable bandpass filter allows you to
remove noise at both low and high
frequencies and a facility is also provided
to select mono reproduction.
low intermodulation distortion
The theoretically-ideal preamplifier
reproduces sound perfectly over an infinite
range of frequencies – starting from well
below the audible range and extending far
above the capabilities of human hearing.
Although sound outside the human hearing
range of approximately 20 to 20,000 Hz
cannot be heard,it can significantly affect
the quality of music reproduction through
welcome welcome
0504
Thank you for purchasing theTAG McLarenAudio phono preamplifier PPA20.
an effect that audio engineers call
‘intermodulation distortion’.This type
of distortion moves imperfections that
originate outside the hearing range back
into the audible frequencies.To minimise
this effect,TAG McLarenAudio
preamplifiers have a frequency response
which extends both above and below the
range of normal human hearing.
straight line technology
To prevent intermodulation distortion,
a preamplifier must respond to very low
frequencies but block any Direct Current
(DC).This is traditionally achieved using
capacitors, which also block some of the
low-frequency signal.In the PPA20,
a feedback circuit eliminates DC offset
voltage and allows the signal path to be
direct coupled without any capacitors.
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 5

This arrangement, which we atTAG
McLarenAudio call‘Straight Line
Technology’,is easy to describe but not
easy to realise.The design has taken our
expert engineers years to perfect.
time constant switching
The PPA20 has a sophisticated muting
system which protects your hi-fi and
prevents annoying,loud switching noises
from reaching the output.A preamplifier
that responds to low frequencies will‘ring’
for a long time in response to the sudden
voltage changes that happen,for example,
when you select a different input.A muting
system that simply waited for the switching
transients to die down naturally would take
far too long to settle.To overcome this
problem the PPA20 incorporates a
technique developed byTAG McLaren
Audio called‘Time Constant Switching’.
This changes the characteristics of the
preamplifier during input switching to
reduce the settling time so that the mute
period can be as short as possible.
versatile input loading
The inputs of the PPA20 have the correct
loading for moving magnet and moving coil
cartridges.Each input includes special load
terminals which allow you to tailor the
input to match any cartridge which may
need special,non-standard,loading
characteristics. Gain control is also
provided so that you can select the right
amount of amplification for your cartridge.
Loading and gain settings for each input are
retained in the memory of the PPA20.
high-quality circuitry
The circuits in the PPA20 are‘no-
compromise’designs using high-quality,
high-stability components to send a
smooth,clean signal to your amplifier for
excellent sound quality.
The PPA20 unveils,without any
compromise,all of the music information
in your record collection.
06 07
welcomewelcome
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 7

‘Straight Line Technology’ to give low-frequency response
down to 0.1 Hz
Dual mono design with independent left and right grounds
Precision RIAA equalisation
Independent inputs for two turntables with independent
ground connections
Settings for two different types of cartridge
Three gain settings
Input, gain and cartridge-type settings retained in memory
Automatic muting with ‘Time Constant Switching’
Controls for: input selection, cartridge type, low-frequency
(IEC) filter, bandpass filter and mono
Dedicated sockets for special cartridge loading
Two low-impedance analogue stereo outputs to allow long
cable runs
Switchable 20 dB output attenuator
An additional transformer-coupled and balanced output, via the
fitted XLR connectors, can be supplied as an option
Precision metal-film resistors
Sorbothane®sonic isolation feet, specially designed by
TAG McLaren Audio(1)
08 09
key eatures key eatures
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1. For the very best performance we recommend that our units are placed on
individual shelves and are not stacked one on top of another
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 9

We know you are keen to get your PPA20 working. This section will
have you listening to your favourite music as quickly as possible.
If you fold out the front cover of this manual, you will locate
diagrams which will help you find your way around your PPA20(1).
Make sure that all the components of your audio system are
disconnected from the AC supply whenever you change any
connections.
Use the cable supplied with your turntable and tone arm to connect
your turntable to the phono sockets marked PHONO signal 1 left
and right on the back of your PPA20(2).
Use a good-quality, screened phono-phono audio cable to
connect the phono sockets marked OUTPUT 1 left and right on
the back of your PPA20 to the corresponding AUX inputs of your
amplifier or preamplifier(3).
Make sure the AUX input is selected and the amplifier’s volume
is turned down.
be ore
you start
turntable
connection
ampli ier
connection
Check that the power button is out so that power is off when you
plug in(4). Using the cable supplied, connect the socket on the
back of your PPA20 to an AC supply outlet. For the best sound
quality, we recommend that you do not use multi-plug adaptors.
Press the power button in. The blue power LED will come on.
Start playing a record on your turntable.
Turn up the volume, sit back and enjoy the music(5).
power
connection
switch on
10 11
getting started getting started
1. Throughout this instruction manual (except in titles), bold print indicates the
lettering that you will find on the panels of your PPA20
2. If your turntable has a ground lead, you should connect it to your PPA20, please
see page 21
3. You should not use the phono input of your amplifier or preamplifier unless you
are sure it is suitable for line level inputs. If your amplifier does not have an
input labelled AUX, you can usually connect to an input labelled LINE or any
other line level input
4. The power button is a latching switch. One press will hold it in, the next will
release it
5. While the above procedure should work with most cartridges, you may find that
with your cartridge there is no sound or it is distorted. If this happens, please
read the rest of this instruction manual to find out how to set up your PPA20 to
work with your cartridge
left
right
signal
left
right
signal 12
ground
PHONO
load load
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 11

The input button allows you to select the PHONO 1 or 2input.
The input you have selected is shown by an LED on the front
panel marked in 1 or in 2. Pressing the input button switches the
input from PHONO 1 to 2and back(2).
selecting input
Your PPA20 has independent inputs for two turntables.
On the back panel of your PPA20 you will find two sets of inputs
labelled PHONO 1 and 2. Each input consists of a pair of phono
sockets for left and right signal, a pair of phono sockets for left
and right load and a ground terminal.
Connect your turntable to the left and right signal sockets. The load
sockets are used to apply special input loading as described on
page 25. The use of the ground terminal is described on page 21.
The PHONO 1 and 2inputs, including the ground terminals and
the signal grounds, are electrically isolated from each other.
This means that two turntables may be connected to the PPA20
without interfering with each other.
The input loading and equalisation meet the RIAA(1) standard.
turntable inputs
12 13
inputs inputs
1. Record Industry Association of America
2. The PPA20 remembers the last input setting even when power is disconnected
c
in 1 in 2
input
left
right
signal
left
right
signal 12
ground
PHONO
load load
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 13

In order to work properly, the input and gain characteristics
of your PPA20 have to be matched to your cartridge.
The PPA20 has a choice of three predefined settings tailored to
the most common types of cartridge (special cases are discussed
on page 25).
The three cartridge settings on the PPA20 are mm, mc x 10 and
mc x 30. The mm setting has the lowest gain and is suitable for
high-output cartridges. The mm setting also selects the correct
input characteristics for a typical moving magnet cartridge.
The mc x 10 and mc x 30 settings select the correct input
characteristics for a typical moving coil cartridge. The mc x 10
setting gives a gain of 10 times the gain on mm and is most
suitable for medium-output cartridges. The mc x 30 setting has
a gain of 30 times the gain on mm and is most suitable for low-
output cartridges.
The cartridge selector button mc/mm allows you to select the
cartridge type and gain. The cartridge type and gain setting
you have selected is shown by an LED on the front panel marked
mc x 30, mc x 10 or mm. Pressing the mc/mm button steps
through the following sequence, mc x 30, mc x 10, mm, mc x 10
and back to mc x 30(1).
You can have a different cartridge type and gain on each input.
Changing the input will return you to your chosen cartridge type
for that input(2).
types o
cartridge
selecting the
cartridge type
14 15
selecting the cartridge type selecting the cartridge type
mc/mm
mcx30 mcx10 mm
1. Because of the large difference in gain, the PPA20 passes through mc x 10 when
switching from mm to mc x 30 and back
2. The PPA20 remembers the cartridge type and gain for each input even when
power is disconnected
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 15

The information supplied with your cartridge should include its
output level.
If this is less than 100 µV (or 0.1 mV)(1),use the mc x 30 setting;
If it is between 100 µV and 400 µV (0.1 to 0.4 mV), use mc x 10;
If it is more than 400 µV (0.4 mV), use mm.
If your cartridge is of the moving magnet type, you should always
use the mm setting.
If you don’t have the information, you can find the best setting
by experiment. With the volume on your amplifier set low, play
a recording of roughly average dynamics. Try the different
cartridge settings until you find the one which has the best
transparency and least distortion. You may have to adjust the
volume on your amplifier as you change cartridge settings(2)
Your PPA20 has a microprocessor-controlled muting system to prevent
switching noises being sent to your amplifier and loudspeakers.
The PPA20 turns off the output for a short time whenever you
change any settings. The LED on the front panel labelled mute
will light when the output is muted.
If all the filters are off (see page 18 and 20), the automatic muting
may be triggered by the low-frequency pulse generated when you
lift the tone arm.
The output will switch itself back on after a short period(1).
choosing the
ideal cartridge
setting
automatic
muting
16 17
selecting the cartridge type muting
1. About 2.5 seconds when the cartridge type is set to mm, and 10 seconds when
it is set to mc x 10 or mc x 30
1. 1 µV (microvolt) is one millionth of a volt and 1 mV (millivolt) is one thousandth of
a volt. The output levels are relative to a cartridge excitation of 5 cm/sec at 1 kHz
2. If the volume is too high, even with the volume control on your amplifier turned
down low, you can use the OUTPUT level control (rear panel) to reduce the
output from your PPA20 (see page 23)
mute
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 17

The frequency response of the PPA20 has been tailored to fit
precisely the requirements of the RIAA specification.The PPA20
also includes a filter which meets the requirements of the IEC(1)
extension to the RIAA specification, cutting out low (bass)
frequencies to prevent ‘rumble’. To further enhance your
enjoyment of older recordings, which may be damaged or were
recorded using non-standard methods, the PPA20 also has a
bandpass filter and the capability to be switched to mono.
Use the IEC filter if you hear low-frequency ‘rumbling’ noises that
you might get, for example, from a warped record.
Press the filter selector button marked riaa/iec on the front panel
to switch from riaa to riaa/iec and back. The status of the filter is
shown by an LED on the front panel labelled riaa or riaa/iec.
The riaa LED indicates that the PPA20 is meeting the RIAA
specification while the riaa/iec LED indicates that the IEC
low-frequency filter is switched on as well.
The bandpass filter(2) cuts down both high- and low-frequency
noise and is useful for listening to older records. In particular, the
bandpass filter can be used to remove the high-frequency carrier
signal from old quadraphonic recordings.
You can use the bandpass filter and the low-frequency (IEC) filter
at the same time to enhance the rejection of low frequencies.
When you listen to mono recordings you should select the mono
setting. This setting will also enable you to listen to certain types
of non-standard stereo recordings, albeit in mono(3).
The mono setting only works when the bandpass filter is on.
bandpass ilter
mono
low- requency
(IEC) ilter
18 19
ilter and mono settings ilter and mono settings
1. International Electrotechnical Commission
2. A bandpass filter passes a band of frequencies and cuts out frequencies above
and below the band. The bandpass filter in the PPA20 allows through
frequencies between 40 Hz and 20 kHz
3. You can use the mono setting to check the wiring of your cartridge. Play a stereo
record. If the sound drops to a very low level when you switch to mono, then it is
most likely that the phasing of your stereo channel connections is wrong
riaa/iec
riaa riaa/iec
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 19

The mode button allows you to select the bandpass filter and
mono output. The setting you have selected is shown by one (or
two) of three LEDs on the front panel marked direct, filter and
mono(1). Pressing the mode button steps through direct, filter,
filter and mono, and back to direct.
The direct setting means that the bandpass filter and mono are
off. The direct setting takes full advantage of the extremely wide
bandwidth of the PPA20 achieved by the use of
‘ Straight Line
Technology’. When filter is selected the bandpass filter is
switched on. Selecting filter and mono connects the stereo
channels together to give the same signal on both channels.
The mono setting can only be selected when the bandpass
filter is on.
The AC mains supply normally operates at either 50 or 60 Hz
(depending on which country you are in). Under some
circumstances, this can cause an audible hum in your
loudspeakers.
Should you have any problems with hum in your system,
please contact your retailer.
To minimise the possibility of mains hum in your system:
do not link the ground terminals of separate audio units
together.
use screened cable for your signal connections and keep
the left and right channel cables close together.
Consult the instructions for your turntable, tone arm and cartridge
for the manufacturer’s recommendations on grounding. If your
tone arm has a separate flying lead, you should connect it to your
PPA20 as follows:
use the ground terminal below the PHONO 1 input for the
turntable connected to PHONO 1 and the ground terminal
below the PHONO 2 input for the turntable connected to
PHONO 2.
avoiding hum
grounding
turntables on
your .
selecting
bandpass ilter
and mono
20 21
ilter and mono settings grounding
1. When mono is on, both the filter and mono LEDs are lit
filter mono
direct
mode
left
right
signal
left
right
signal 12
ground
PHONO
load load
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 21

22 23
grounding outputs
All the units in the TAG McLaren Audio F3 Series are double
insulated and do not require safety ground connections.
Your system does not need to be connected to ground (audio
engineers call this ‘floating’). However, if you want to ground
your system, please contact your retailer who will be able to
assist you.
grounding
your system Use the outputs to connect your PPA20 to an amplifier or for tape
recording. The low-impedance (50 Ω) outputs are buffered and
will drive long cables or several inputs in parallel if required.
For your convenience, two phono outputs are provided on the
back panel of your PPA20. OUTPUT 1 and 2each use two phono
sockets, one for left and one for right. OUTPUT 1 and 2are
connected in parallel.
Always use high-quality, screened cables for your connections.
Some cartridges have such a high output that the resulting
amplified output from the PPA20 is higher than the usual line
level. This will result in a higher volume when playing records
compared with other inputs.
The PPA20 has a button, labelled OUTPUT level, on the back
panel to reduce the output level. Press the button in to reduce
the output by 20 dB. Press the button again to return to the full
output level.
Always turn down the volume on your amplifier before increasing
the output level.
audio output
sockets
output level
control
left
right
12
0 dB
level
-20 dB
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 23

trans ormer-
coupled,
balanced
audio output
(option)
25
special input loading
In order to get the best reproduction of music, the input
impedance(1) of the PPA20 should match the recommended load
impedance of your turntable cartridge. The input impedance of
the PPA20 is matched to the two types of cartridge in common
use – moving magnet or moving coil. However, some cartridges
(older moving magnet types, for example) may need different
input characteristics.
You can modify the input impedance by connecting suitable
resistors and capacitors across the load sockets.
Use the instructions on the following two pages to calculate the
value of the resistor and capacitor that you need. You should then
solder the components to a phono plug, connecting one lead of
each component to the signal pin and the other lead to the metal
body of the plug. Make two identical plugs and insert one into
each of the left and right load sockets for your chosen input.
We strongly recommend that, unless you know exactly what you
are doing, you contact your retailer, who will be happy to assist.
itting load
components
As an option, the PPA20 can be fitted with transformers to
provide a balanced output via XLR connectors. This gives greatly
enhanced immunity to electromagnetic interference, resulting
in less noise, especially if long cables are used. This type of
connection is often used in professional applications.
Please contact your retailer if you require this option.
If you do not have the transformer-coupled, balanced output
option, the XLR sockets labelled OUTPUT 3 and 4are not
connected and cannot be used(1).
When the transformer-coupled, balanced output option is
installed, you can use the XLR sockets labelled OUTPUT 3 and 4
on the back panel of your PPA20. Each output uses two XLR
sockets, one for left and one for right.
The XLR connectors are latched so you will hear a click when they
are fully inserted. You have to press the button on the plug to
allow you to remove it.
24
outputs
1. TAG McLaren Audio has pre-installed the XLR connectors to make the upgrade
quick and easy
left
4right
transformer
balanced
(option)
transformer
balanced
(option)
1. Impedance is the combination of resistance, capacitance and inductance that
defines the electrical characteristics of a device
left
right
signal
left
right
signal 12
ground
PHONO
load load
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 25

27
special input loading
To calculate the value of the capacitor to connect to the load
plug, you need to know the input (or load) capacitance that your
cartridge requires for optimum sound quality. You should find this
in the instructions for your cartridge. You can calculate the load
capacitance by using the following formula:
CLOAD is the load capacitor (in pF(1)) that you need to put in the
plug.
CTERM is the capacitance (in pF) that the cartridge needs.
CLEAD is the capacitance of the leads between the cartridge
and the PPA20 (tonearm lead capacitance in pF).
CPPA20 is the factory-fitted input capacitance of the PPA20 which
is 100 pF when set to mm and 3300 pF when set to mc.
calculating load
capacitance
To calculate the value of the resistor to connect to the load plug,
you need to know the input (or load) resistance that your
cartridge requires for optimum sound quality. You should find this
in the instructions for your cartridge. You can calculate the load
resistance by using the following formula:
RLOAD is the load resistor in Ωthat you need to put in the plug.
RTERM is the load resistance in Ωthat the cartridge needs.
RPPA20 is the factory-fitted input resistance of the PPA20 which
is 47 kΩwhen set to mm and 470 Ωwhen set to mc.
26
special input loading
calculating load
resistance
RPPA20 x RTERM
RLOAD = RPPA20 - RTERM
CLOAD = CTERM - CLEAD - CPPA20
1. 1 pF (pico farad) =10-12 farad; 1000 pF = 1 nF (nano farad)
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 27

Your PPA20 is designed to amplify very small signals, which can
make it sensitive to interference from other nearby equipment.
You may need to move your PPA20, your turntable or the
interfering equipment to remove the problem.
If the mute light on the front panel of your PPA20 stays on, it may
be an indication of such strong interference that the PPA20 is
protecting itself and any amplifier/loudspeakers connected to it.
This could be caused by a fault in the tonearm or turntable or in
the interconnecting cables.
inter erence
29
running in and warming up
running in
warming up
TAG McLaren Audio equipment is designed to give optimum
performance for many years.
Just like a high-quality car, the performance of your PPA20 will
improve during the first few hours of operation. The electronic
components will then have reached and settled down to near-
perfect specification.
Every time you switch on your PPA20, the performance will improve
until the components reach their optimum operating temperature.
28
inter erence
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 29

The only service you should do to your PPA20 is described on the
left. All other servicing should only be carried out by one of our
authorised service agents.
If service is required, please contact your authorised TAG
McLaren Audio retailer. If your PPA20 is still under guarantee,
please refer to the guarantee card which gives you details on
how to claim against the guarantee.
Please keep the original packaging and use it whenever your
PPA20 is transported.
service
30
care and maintenance
1. You cannot open the fuse carrier drawer while the plug is in the socket
There is a fuse in the power socket on the back of your PPA20.
To change the fuse, unplug the power cable and pull out the fuse
carrier drawer(1).
The fuse carrier contains a spare fuse; this is the first one that you
see when you open the carrier.
There are no other user-serviceable parts inside the PPA20.
In order to maintain the appearance of your PPA20, you can
clean it as follows:
before cleaning, always disconnect your PPA20 from the AC
supply.
any grease or dirt on the case may be removed with a soft,
lint-free cloth moistened slightly with a mild solution of warm
water and detergent or washing-up liquid. Do not use any
other solutions. Do not use any solvents or abrasives.
take great care not to get any liquid inside the case.
If this happens, you should have your PPA20 serviced.
care and maintenance
31
uses
cleaning
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 31

technical data
32 33
technical data
This section is for those of you who really want to know the ‘insides’
of your PPA20. You will not miss out on any of the functions or
performance of your PPA20 if you choose not to read any further.
mm 2.2 mV (relative to 175 mV rms output)
mc x 10 220 µV (relative to 175 mV rms output)
mc x 30 75 µV (relative to 175 mV rms output)
mm 47 kΩ, 100 pF nominal
mc x 10 470 Ω, 3.3 nF nominal
mc x 30 470 Ω, 3.3 nF nominal
mm 38 dB
mc x 10 58 dB
mc x 30 67 dB
mm 140 mV (+29 dB relative to 5.0 mV)
mc x 10 14 mV (+29 dB relative to 0.5 mV)
mc x 30 4.7 mV (+33 dB relative to 0.1 mV)
OUTPUT 1 phono socket
OUTPUT 2 phono socket
OUTPUT 3 XLR (optional connection)
OUTPUT 4 XLR (optional connection)
standard not connected
transformer- pin 1 – ground
coupled pin 2 – non-inverting signal
(option) pin 3 – inverting signal
50 Ωnominal
11 V rms at 1 kHz
greater than 75 dB (relative to 0.5 V rms output)
mm 0.1 Hz – 60 kHz
mc x 10 0.3 Hz – 60 kHz
mc x 30 1 Hz – 60 kHz
input level
(at 1 kHz)
input impedance
(at 1 kHz)
gain
(at 1 kHz)
maximum
input level
(at 1 kHz)
audio output
connector
XLR connector
wiring
audio output
impedance
maximum audio
output level
maximum audio
output level
signal to noise
requency response
(-3 dB)
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 33

35
technical data
technical data
34
requency response
(10 Hz – 20 kHz)
total harmonic and
intermodulation
distortion +noise
channel separation
channel balance
50 – 60 Hz
110 – 120 V or 220 – 240 V
The voltage is marked on the rear of the unit
less than 25 W
445 mm wide
75 mm high
325 mm deep
low- requency
IEC ilter
bandpass ilter
operating
temperature range
ac supply
requency
ac supply
voltage
± 0.2 dB
mm Less than 0.003%
mc Less than 0.006%
mm greater than 98 dB at 1 kHz
All other modes greater than 100 dB at 1 kHz
(except mono)
± 1 dB (1.5 dB with bandpass filter)
–3 dB at 20 Hz, 6 dB / octave slope
–3 dB at 40 Hz and 20 kHz,12 dB / octave slope
10 – 35 ˚C
power consumption
dimensions
(including feet,
terminals and controls)
We reserve the right to alter design and specification without notice
Specification may vary for different countries
The rated and typical performance applies when the mains supply voltage is either
230 V AC for 220 - 240 V units or 115 V AC for 110 - 120 V units
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 35

international standards
36
Your PPA20 meets or exceeds all the legal requirements listed below:
directives
sa ety
emc emissions
emc immunity
89/336/EEC EMC Directive (as amended by 93/23/EEC)
73/23/EEC Low Voltage Directive (as amended by 93/23/EEC)
IEC65: 1985
IEC65 A2: 1989
IEC65 A3: 1992
EN60065: 1993
EN50081 -1: 1992
EN55022 Class B: 1994
EN60555 -2: 1987
EN61000 -3-2: 1995
EN61000 -3-3: 1995
FCC Part 15 Class B: 1997
EN50082 -1: 1992
IEC801 -2: 1991 ± 8 kV air discharge
IEC801 -3: 1984 3 V/m
IEC801 -4: 1988 ± 1 kV AC power, ± 500 V other ports
EN61000 -4-2: 1995 ± 8 kV air, ± 4 kV contact discharge
EN61000 -4-4: 1995 ± 1 kV AC power, ± 500 V other ports
EN61000 -4-5: 1995 ± 2 kV common mode, ± 1 kV differential mode
EN61000 -4-11: 1994
GRA00046.1-[CA]PPA20 13/03/01 11:31 Page 37