Anthem Audio Amp 1 - Manual (Page 5)

C O N T R O L F U N C T I O N S
A L E D
When the LED is lighted the Amp 1 is “ON”, receiving
power from the power supply.
B ON- OF F BUTTO N
When in the ON position (button depressed), high
voltage power is received by the Amp 1 circuitry from
the power source. Due to the warm up characteristics
of tubes, it will take 30 seconds for the tubes to pass
full signal. It is suggested that the Amp 1 remain
muted or the Volume turned down for this first
minute. When in the OFF position (not depressed),
the Amp 1 is not receiving power and is not opera-
tional.
3
C D E TACHABLE AC PO WER CO RD SOCKET
Plug the Detachable Power Cord into this socket (see
Figure 2). The Amp 1 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 operat-
ing voltage is required, please contact an authorized
Sonic Frontiers or Anthem dealer, distributor or the
factory directly.
D SPEAKE R C ONNE CT ION POSTS
These 5 way binding posts accept a connection from
one pair of speakers. The negative connections are to
be made to the black connectors; left speaker to the
terminals marked left and right to the terminal marked
right. The positive connections are determined by the
speakers. If the speakers impedance tends towards
an 8 ohm load, use the left and right positive (red)
posts labeled as 8 ohm. If the speakers are better
represented by a 4 ohm load impedance, use the
positive connectors labeled 4 ohm. Consult your
speaker specification sheet, manual or manufacturer
directly if there is any clarification needed regarding
the impedance of your speakers. NOTE: ONLY O N E
PA I R OF POSITIVE C O N N E C T O R S M AY B EU S E D AT A
TIME. UNDER N O C I R C U M S TA N C E S A R E T W O PA I R
O F S P E A K E R ST O B E C O N N E C T E D T O BOTH 4 OHM
A N D 8 O H M P O S T S .
Refer to Figure 2 for further instruction.
C O N N E C T I O N F U N C T I O N S
F I G U R E 2
Top figure shows a connection to a loudspeaker with an
8 ohm impedance, lower figure shows a connection to a
speaker with 4 ohm impedance.
WARNING-DISCONNECT THE A C D E TA C H-
A B L E P O W E RC O R D F R O M T H E AMP 1
AND WAIT 5 MINUTES BEFORE REMOV-
ING COVER, TUBES OR FUSE.
E PREAMPLIFIE R I NPUT
This input accepts RCA input connections from an
external preamp or crossover; connect left channel to
left channel and right channel to right channel.