ANTHEM P RE 1L OPERATI N G M ANU A L
We at Sonic Frontiers hope you will derive many years of listening pleasure with your new Anthem Pre 1L. This Operating Manual contains important information regarding the operation and care of the Pre 1L. 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.
A B D E F C G H I
CONTROL A FUNCTIONS SE LE CTOR S WIT CH F This knob is rotated to select a Line Level Input (M overleaf). Note that the Selector Switch is bypassed when the Tape/EPL(External Processor Loop) mode is selected by depressing the Tape/EPL-Source button (E). B This Light Emitting Diode has three status conditions identified by different displays. They are: • DIM - indicates the Power Switch (I) has been initialized and that the Pre 1L is cycling through it’s 45 second turn on sequence.
J K L N M
CONNECTION J FUNCTIONS D E TACHABLE IEC AC POW ER CORD S OCKE T Plug the Detachable Power Cord into this socket (see Figure 4). The Pre 1L 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.
WARNING- DISCONNECT THE AC DETACHABLE POWER CORD FROM THE Pre 1L AND WAIT 5 MINUTES BEFORE REMOVING COVER, TUBES OR FUSE. SETTING UP The Pre 1L comes with four tubes, as follows: 6922 (LV1 & V1, LV2 & V2) The 6922 tubes may be replaced with a matched set of ECC88/6DJ8s or E188CC/7308s with no circuit modification. These tubes were chosen for their reliability and extremely low noise. The amplifier topology used in the Pre 1L delivers exceptional performance using the 6922 tube.
LV2 V2 LV1 V1 FUSE LOCATION Figure 2 - Tube and Fuse Location 8dB 16dB 24dB SW101 Figure 3 - Gain Switches (Viewed from front panel.) Gain Switches shown in 8dB position.
After the insertion of the tubes, replace the cover and fasten it with the screws provided. The Pre 1L is now ready for operation. For further information on tube replacement, NOS (New Old Stock) tubes, contact your dealer, a Sonic Frontiers Customer Service Representative or The Parts Connection, a division of Sonic Frontiers. OPERATION Before plugging in the Pre 1L, check to see that the unit is configured for the correct AC line voltage for country of use.
Muting the Pre 1L is achieved by placing the Mute/Operate button (H) 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). NOTE: Under no circumstances should you replace the AC power fuse with one of a higher current rating! Doing so may cause further damage to the Pre 1L and will also void the warranty. In addition, your continued protection from risk of fire or shock would be seriously compromised.
BR EAK- IN TI ME PACKI NG MAT E R I A L S As with all audio electronic products, the ultimate sonic character of the Pre 1L will not be realized until and unless the unit receives a minimum of approximately 70 hours of signal break-in time (i.e. the Pre 1L is on and producing an output signal). Please retain all of the packing material and shipping boxes for your Pre 1L. They are custom designed to prevent shipping damage from occurring. Sonic Frontiers, Inc.
LIMITED F IVE YEAR WA R R A N T Y Sonic Frontiers, Inc. warrants to the purchaser that each Pre 1L 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.
TECHNICAL SPECIFICATIONS (AC line set at 117V 60Hz) 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 settings @ 1kHz INPUT IMPEDANCE: 40k ohms OUTPUT IMPEDANCE: <135 ohms @ 1kHz, all gain settings. RATED OUTPUT: 1 VRMS MAXIMUM OUTPUT VOLTAGE: 30 VRMS at 1% THD NOISE: < 115µV unweighted wideband noise Approx.
279 0 BR I GHTO N R OAD, O AKVIL LE , ONTA RIO , CA NA DA So n i c F r o n t ie r s E - m a i l c a n b e r e a c h e d 9 : 00 S F I @ s o n i c f r o n t i e r s . c o m D E S I G N E D A N D a m W o r l d M A N U F A C T U R E D t o L6H 5T4 6 : 0 0 W i d e B Y p m W e b T EL: (90 5) 82 9 -383 8 ( E .S . T. ) S i t e S O N I C or 2 4 h o u r s FA X: ( 90 5) 829 -3 03 3 a d a y b y f a c s i m i l e h t t p : / / w w w . s o n i c f r o n t i e r s .