In addition to the Pre 2L, its covers, and the opera
manual you are presently reading (with associated in
and warranty card), there are a few more items to ta
inventory of before steps are taken to make the Anth
Pre 2L operational.
These items are:
• two matched pairs of 6922 tubes (or equivalen
totaling 4*
• remote handset
• a glove for handling the tubes
• a detachable AC power cord
• 18 screws
• 1 Philips #1 screwdriver
After completing an inventory of these items, procee
the next steps.
*These tubes are carefully measured and matched in
pairs. Take extra care to keep the pairs from being m
and mismatched which would degrade performance.
T E C H N I C A L S P E C I F I C A T I O N S
INPUTS (6) CD, Tuner, Aux 1, Aux 2/Phono, Tape, SSP
OUTPUTS (4) Tape, Power Amplifier, 1/4” Stereo Headphone Jack
CONTROLS (3) Input Select, Balance, Volume
SWITCHES (5) SSP, Tape/EPL (External Processor Loop), Mono/Stereo, Mute/Operate,
Power On/Off
FREQUENCY RESPONSE 2 Hz to 130 kHz
-
0.5 dB; > 250 kHz -3.0 dB at 1VRMS output
THD & N (Output at 1V RMS) < 0.1% from 20 Hz to 20 kHz
GAIN Selectable, 24, 16 & 8dB @ 1kHz
INPUT IMPEDANCE 40k ohms
OUTPUT IMPEDANCE <135 ohms @ 1kHz, all gain settings.
RATED OUTPUT 1 VRMS
MAXIMUM OUTPUT VOLTA G E 30 VRMS at 1% THD
NOISE < 80µV unweighted wideband noise. Approx. 60µV IHF A-weighted noise
-92 dB A-weighted below a 1 VRMS output
STEREO SEPARATION > -60dB @ 1kHz relative to 1VRMS output
(Crosstalk)
TUBE COMPLEMENT 4 - 6922 (6DJ8 types)
FUSE REQUIREMENTS (1) .8 A slow-blo, 5mm x 20mm (100-120VAC countries),
.4A slow-blo (220-240VAC countries)
POWER REQUIREMENTS 60VA Maximum, 100-120VAC 60Hz (Export 220-240VAC 50/60Hz)
DIMENSIONS 19” Wide x 11” Deep x 5.25” High (48 cm x 28 cm x 13 cm)
We at Sonic Frontiers hope you will derive many years
of listening pleasure with your new Anthem Pre 2L. This
Operating Manual contains important information regarding
the operation and care of the Pre 2L. Be sure to read this
manual carefully and follow these instructions in order to
keep it performing and sounding its best. Please contact
Sonic Frontiers if you have any questions, a Customer
Service Representative will be pleased to assist you.
W H AT ’ S I N T H E B O X ?
in the original packing material. A returned product s
be accompanied by a written description of the defe
Repaired units will be returned by Sonic Frontiers Int’l s
and insurance prepaid.
All other warranties or conditions either written or im
are void.
Note: In foreign markets (anywhere outside of Canada a
USA), the warranty is supplied by the authorized Interna
D i s t r i b u t o r. Exact terms and conditions may vary.
r
presence of uninsulated “dangerous volt
within the product’s enclosure that may
sufficient magnitude to constitute a risk
tric shock to persons.
This symbol is intended to alert the user
the presence of important operating and
maintenance (servicing) instructions in th
literature accompanying the appliance.
A B C
Figure 1 - Pre 2L Control Functions
LIMITED FIVE YEAR WA R R A N T Y
Sonic Frontiers Int’l warrants to the purchaser that each
Pre 2L is free of manufacturing defects for a period of five
(5) years from the date of purchase. This five (5) year
limited non-transferable warranty excludes all vacuum
tubes, which we warrant for a period of twelve (12)
months. To receive this warranty, the original purchaser
must complete and mail to Sonic Frontiers, within thirty
(30) days from the date of purchase, the enclosed
Warranty Registration Card. Sonic Frontiers Int’l will then
validate the warranty to the original purchaser. This warranty
is subject to the following conditions and limitations:
1
. Warranty applies only to the original purchaser.
2. This warranty is void and inapplicable if the product
has been handled other than in accordance with the
instructions in this Owner’s Manual, abused or misused,
damaged by accident or neglect or in being transported,
or the defect is due to the product being tampered with,
modified or repaired by anyone other than Sonic Frontiers
Int’l or an authorized Sonic Frontiers repair depot.
3. Warranty does not cover normal maintenance.
4. Sonic Frontiers Int’l shall not be responsible in any way
for consequential or indirect damages or liabilities resulting
from the use and operation of the product covered herein
or resulting from any breach of this warranty or any
implied warranty relating to said product.
D
E G I K
F JH
During this period, Sonic Frontiers Int’l will repair or replace
any defective components free of charge. A Return
Authorization Number (RA Number) is required before any
product is returned to our factory for any reason. This
number must be visible on the exterior of the shipping
container(s) for Sonic Frontiers to accept the return.
Units shipped to us without a Return Authorization Number
or without a visible RA Number on the exterior of the shipping
container(s) will be returned to the sender, freight collect.
Units to be repaired by Sonic Frontiers Int’l must be sent
shipping and insurance prepaid by the original purchaser
This symbol is intended to alert the use
-IN TIME
the ventilation slots and cause electrical damage to
PACKING MAT E R I A L S
Please retain all of the packing material and shipping boxes
for your Pre 2L. They are custom designed to prevent shipping damage from occurring. Sonic Frontiers Int’l. will
accept no responsibility for any damage occurring to a Pre
2L that is shipped in packing material other than the original
Sonic Frontiers packing material.
DISCLAIMER OF LIABILITY
Under no circumstances does Sonic Frontiers Int’l assume
liability or responsibility for injury or damages sustained in
the use or operation of this equipment or for damages to
any other equipment connected to it.
Sonic Frontiers Int’l reserves the right to make design
changes or improvements without the obligation to revise
prior versions. All specifications are subject to change
without notice.
C O N T R O L F U N CT I O N S
A SELECTO R SWITCH
This knob is rotated to select a Line Level Input (S).
The Selector Switch is bypassed when the Tape/EPL
(External Processor Loop) mode is selected by
depressing the Tape/EPL-Source button (F), or when
SSP mode is selected by depressing the SSP button (D).
B BALANCE CONTRO L
This knob controls the relative balance of the left and
right channels to compensate for any discrepancies
caused by speaker placement, source imbalance, etc.
Full rotation to the left or right of the center detent will
fully attenuate the left or right channel.
C VOLUME CONTROL
This knob allows variable control over the Pre 2L’s output
level. Turn it clockwise and the music gets louder!
D - SSP (SURROUND SOUND PROCESSOR) INPUT BUTTON
This button selects an external Surround Sound Processor
(SSP) input signal. When selected all preamp functions
are completely disabled. The only way to deselect SSP
mode is to press the SSP button a second time.
E HEADPHONE INPUT JACK
The Headphone Jack accepts 1/4” stereo headphone
plugs. Upon insertion of the headphone plug, the main
amplifier outputs are disabled. All other preamp functions
remain operational. Removal of the headphone plug
restores the main output signal.
F TAPE/EPL (EXTERNAL PROCESSOR LOOP)-
SOURCE BUTTON
When this button is in the SOURCE position (button is
not depressed) the signal is routed through the
Selector Switch (A) to the Tape/EPL Output (R).
Listening and taping is done in this mode. When the
button is depressed, the source signal is taken from a
tape or processor source through the Tape/EPL Inputs
bypassing the selector switch.
G INFRA RED RECEIVER
The Infra Red signal from the Pre 2L’s remote co
is received here, to operate the Volume, Mute an
SSP controls.
H L E D
When the LED is lit the Pre 2L is “ON”, receiving
power. When the Power Button (K) is depressed
LED will be dimly lit Green. After the power-up de
has timed-out (approx. 40 seconds) the LED will
bright green. Upon activating the SSP button (D),
LED will be lit orange. When in Mute mode the in
LED will flash ON-OFF at approximately 1 second in
I MONO/ST EREO BUTTON
When in the ON position (button depressed), the
Mono function is enabled. This function sums all
selected input signals together, and directs them
both channels. As long as the button is depresse
left or a right mono signal will be sent to both cha
of the preamplifier. All other preamplifier functions
operate normally.
J M U T E - O P E R ATE BUTTON
When in the OPERATE state, this button will allow
normal function. When in the MUTE state, the mu
signal is prevented from reaching the Outputs (Q
indicate a muted condition, the indicator LED (H)
flash OFF-ON at approximately 1 second intervals
Please Note that Muting does not work wh
SSP Mode.
K ON-OFF B UTTON
When in the ON position (button depressed), line v
is received by the Pre 2L circuitry from the AC so
Due to the warm up characteristics of tubes, it w
take 40 seconds for the tubes to pass signal. It is
suggested that the Volume be turned down for th
first minute. After the power-up time-out (approx
sec.) set the desired volume level. When in the O
position (not depressed), the Pre 2L is not receiv
power and is not operational.
Muting the Pre 2L is achieved by placing the
Mute/Operate button (J) in the MUTE position (button
depressed); the output signal is then cut off. To resume
listening, place the button in the OPERATE position (not
depressed).
It is recommended that you shut OFF the main power via the
Power Switch (K) when not listening.
T R O U B L E S H O O T I N G
If at any time the Pre 2L fails to work properly, consult this
checklist:
1. Check that the AC Detachable Power Cord is plugged into
the Pre 2L Detachable Power Cord Socket (P) and is connected
to a live source of AC power. For instance, if using a power
bar, check that the bar is turned on.
2. Ensure that all Input and Output connections are secure for
a proper electrical contact.
3. DISCONNECT THE AC POWER CORD, wait 5 minutes, and
check that:
• A slo-blo fuse, with a rating of 0.8 Amp/250 V (0.4 Amp/250
V for European and Asian versions), is installed in the fuse holder
directly under the removable IEC power cord socket.
• The AC power fuse is intact and has not blown. If the fuse
has blown, the thin metal conductor will have melted and the
glass may appear “smoked”. If the fuse has blown, replace
with a fuse of the same rating (0.8 Amp/250V slow-blo for
100 to 120 volt countries and 0.4 Amp/250V slow-blo for 200
to 240 volt countries). (See Figure 9)
NOTE: Under no circumstances should you replace the
power fuse with one of a higher current rating! Doing so
cause further damage to the Pre 2L and will also void th
warranty. In addition, your continued protection from ris
fire or shock would be seriously compromised.
• Ensure the tubes are plugged firmly into their sockets
described in “INSERTION OF THE TUBES”.
5. Be sure the rest of the system is functioning properly
(i.e. source unit, cables and connections, loudspeakers
6. With tubes, fuses, covers and power cords in place,
that the LED (H) is lit (glowing light green). If all of the a
troubleshooting steps have been followed and the LED
lit (remains dark green), contact your dealer or distribut
assistance.
FROM
PRE 2L AND WAIT 5 MINUTES BEF
REMOVING COVER, TUBES OR FUS
L
M
N
O
L VOLUME CONTROL UP
This button will increase the volume of the Pre 2L.
M VO LUME CONTROL DOWN
This button will decrease the volume of the Pre 2L.
N MUTE BUTTON
This button will Mute the outputs of the Pre 2L until the
button is pressed again. This Muting is indicated by the
flashing of the LED (H).
O SSP BUTTON
This button will select an external Surround Sound
Processor or Preamplifier as the input, and bypass all
Pre 2L Preamp functions.
p
cord is plugged in.
Figure 2 - Pre 2L Remote Handset
Figure 8
Alignment of the AC power connector and detachable cord.
Note: The fuse is not
accessible when the
P Q R S
Figure 9
Fuse location in the Pre 2L and removal.
WARNING-DISCONNECT THE AC
DETACHABLE POWER CORD
channel.
If a tape or other line level recording or processing device
is being implemented, connect the left and right audio output
of the unit to the corresponding left and right Tape/
EPL Input of the Pre 2L. Also connect the left and right
Tape/EPL Outputs on the Pre 2L to the corresponding left
and right audio inputs of the external device.
Connect Set 1 of the Main Outputs (Q) on the Pre 2L to a
stereo amplifier or two mono amplifiers; left channel to left
channel and right channel to right channel. Set 2 of the
Main Outputs may be used under different situations and
in combination with Set 1. These situations include biamping,
the use of active crossovers, powered subwoofers and
other equipment; all situations being unique and system
dependent. Refer to the instruction manuals provided with
the other equipment before using the second set of
Outputs.
The Pre 2L is now ready for operation. Power the Pre 2L
by placing the On-Off button (K) in the ON position. The
Power Indicator LED (H) will stay DIM for approximately 45
seconds. During this time, the Main Outputs are muted
while the tubes are warming up and stabilizing. As soon as
the Power Indicator LED is at steady, normal intensity, the
Pre 2L is ready for operation.
Select a ready signal source with the Selector Switch (A).
Balance is adjusted through use of the Balance Control (B);
turning it left and right will adjust the left and right levels
r e s p e c t i v e l y. The center detent is an indicator for equal, or
balanced, left and right levels.
Volume is adjusted through use of the Volume Control (C).
Turning this control clockwise increases the volume level
of both channels. Be sure the level is sufficiently low when
turning the unit ON or returning to the OPERATE mode
after MUTING, to prevent damage to speakers, amplifiers
or the Pre 2L itself.
To record from a source, place the Tape/EPL-Source button
(F) in the SOURCE position, select the source material you
wish to record via the Selector Switch (A), and commence
recording. To play back a tape recording, place the Tape
EPL/ Source button in the TAPE position.
P D E TACHABLE IEC AC POWER CORD SOCKET
Plug the Detachable Power Cord into this socket (see
Figure 4). The Pre 2L is factory set for the correct
operating voltage for the area in which it is sold (see
shipping box for voltage setting). If a different operating
voltage is required, please contact an authorized Sonic
Frontiers or Anthem dealer, distributor or the factory
directly.
Q MAIN OUTPUTS ONE AND TWO
These outputs connect to the single-ended inputs of
other units such as power amplifiers or a crossover
unit; connect left channel to left channel and right
channel to right channel. The set of two allows for
easier biamping and greater flexibility when dealing
with components such as electronic crossovers, a
powered subwoofer, etc.
R TAPE/EPL(EXTERNAL PROCE SSOR LOOP)
O U T P U T
This output connects to the single-ended inputs of a
tape deck or external processor; connect left channel
to left channel right channel to right channel. This output
always follows the input selection of the Selector
Switch (A).
I N P U T
This input accepts a single-ended RCA input connection
from a tape deck or external processor;connect left
channel to left channel right channel to right channel.
These inputs are activated when the Tape/EPL-Source
button (F) is depressed.
S LINE L EVEL INPUTS FOR CD, TUNER
AND AUXILIARY SOURCES
Line level single-ended source connection may b
made to these 4 sets of RCA connectors; connec
channel to left channel right channel to right chan
T SSP INPUT
This input accepts a single-ended RCA input conn
from an SSP Processor; connect left channel to le
channel and right channel to right channel. The
signal input at these connections will bypass all p
functions of the Pre 2L. To enable this input, depr
the SSP button (D) on the front panel.
I N P U T / O U T P U T I N T E R C O N N E C T I O N S
ing on the glass surface.
Figure 5) or directly on the PC Board, inspect the
firmly seated.
WARNING- DISCONNECT THE AC
LV1 V1
LV2 V2
Figure 5 - Tube Location
DETACHABLE POWER CORD FROM THE
PRE 2L AND WAIT 5 MINUTES BEFORE
REMOVING COVER, TUBES OR FUSE.
Note the larger space
between two of the pins and
holes for proper alignment
of tube and socket.
Figure 4
8dB 16dB 24dB
Figure 6 - Gain Switches (Top view, front panel facing)
SW101 SW102
Figure 7 - Gain Switches shown in 8dB position.
A N T H E M P R E 2 L O P E R AT I N G M A N U A L
0 BR IGH T O N RO A D , O A K V I L L E , O N T A R I O , C A N A D A L 6 H 5 T 4 T E L : ( 9 0 5 ) 8 2 9 - 3 8 3 8 F A X : ( 9 0 5 ) 8 2 9 - 3 0 3 3
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