Earthquake Sound PA-600 - Manual (Page 5)

PA-600 AMPLIFIER FRONT & REAR PANELS FUNCTIONS/CONNECTION.
These jacks accept line level signal sources by means of cables fitted with standard ¼” phone 6. SIGNAL INDICATOR LEDS:
plugs. Low or medium impedance balanced or unbalanced sources are acceptable for these These LED's illuminate when signal is detected at the amplifier's output terminals,
inputs. Balanced inputs are wired as follows: Tip = Signal (+), Ring = Signal (-), Sleeve providing accurate visual confirmation of signal presence, which is helpful in hookup, and
= Ground. Unbalanced inputs may be wired: Tip = Signal, Sleeve = Ground, using a troubleshooting. The output signal must be at least 5% of the amplifier's full rated output to
“mono” plug. make the LED's illuminate.
NOTE: The input channel circuitry requires a line level signal of 1.1V RMS or greater to
drive the amplifier to full output.
7. COOLING FAN EXHAUST VENT:
The PA 600 employs a pair of variable-speed internal cooling fans to draw air through the
13. BINDING POST OUTPUT: unit and keep it running cool even under extreme operating conditions. The air is drawn in
These output connectors offer an excellent method of connecting the amplifier to your through the unit's side and rear intake vents and is forced out through the front panel
speakers using cables terminated with spade lugs, banana plugs, or bare wire. When using exhaust vent. This method of cooling draws air out from the interior of the rack and provides
the amplifier in the Mono Mode, you must use either the two red binding posts or the more efficient cooling methods, which bring air in from the front and exhaust it through the
BIAMP/MONO (middle) Phone jack (#13). The Binding Posts are wired in parallel with back. Keep these vents clear and free from obstruction at all times to insure proper cooling.
the Phone Jacks.
8. STEREO / MONO SWITCH:
14. SPEAKER OUT JACKS: This switch connects the channels to work together for more power output. In the
These heavy-duty output jacks are to be used to connect the amplifier to your speakers using “STEREO” position the amplifier is in the STEREO MODE; with the switch in “MONO”
cables terminated with Phone type plugs. These jacks are wired in parallel with the MODE the amplifier is in the Bridge MONO MODE. In the Bridge Mono Mode, connect
BINDING POSTS: channel 1 and 2 Phone Jacks are wired with pin#1(+) positive or “in input to Channel 1(Channel 2's inputs are disconnected.) Both amp channels are internally
phase”, and pin#1(-) ground or “out of phase" (wired 1+ 1-). The MONO /BIAMP jack has bridged together to create a single-channel amplifier of increased output power. Use the two
channel 1 wired to 1+ and 2+, with 1+ "in phase”. red BINDING POSTS (labeled ”Mono/Biamp”) or pins 1+/2+ of the BIAMP/MONO
(middle) Phone jack.
15. VOLTAGE SELECTOR:
9. AUTO ON / OFF: Selection of AC 115V/60Hz or AC 230V/50Hz voltage source. Before connecting the power
The new auto sensing circuitry immediately senses signal as it reaches the amplifier, when plug to the wall AC outlet, make sure your local power line AC voltage matches the voltage
the music stops it will automatically fall asleep. While in sleep mode the PA-600 consumes setting of amplifier.
less energy than commonly sold Pro Amps.
16. FUSE: Use only the type of fuse specified on the back of amplifier.
10. LIMIT SWITCH:
Switch to “ON” position to activate the limit circuit to prevent the amplifier from clipping. 17. POWER CORD:
Signal indicator LED's will all be illuminated whenever the input signal attempts to
This heavy duty power cord must be connected to a grounded Ac outlet of the proper voltage
overdrive the amplifier's output section. Not only does clipping produce harsh sounding
for the amplifier to operate. TO REDUCE THE RISK OF ELECTREC SHOCK, DO
distortion, it is also capable of damaging speaker components-particularly high frequency
NOT REMOVE OR BYPASS THE GROUND PRONG OF THE POWER CORD.
drivers.
18. RCA INPUT: this is the simplest / most common way to drive an audio signal into the
11. XLR BALANCED INPUT JACKS:
PA-600 amplifier.
These jacks will accept any balanced or unbalanced low or medium impedence line level
source by means of a three-pin XLR plug. The wiring for the plug is as follows:
:
Pin#1=Ground,
Ultra sensitive input pre-amp stage circuitry. Some products on the market can produce
Pin#2=Signal (+),
enough voltage to drive an amp but most don't. Earthquake increased sensitivity by giving
Pin#3= Signal (-).
you more output with less input signal. This new circuitry will allow you to drive the amp to
full stage with as little as 60milivolt.
12. ¼” PHONE JACK INPUTS:
NEW
NEW
-5- Specifications & features are subject to change without notice. www.earthquakesound.com