Audio Electronic Supply Six Pac’s Vacuum Tube Monobloc Power Amplifiers OPERATION MANUAL NOTE: Before installing your new Six Pac’s power amplifier, please read this manual carefully as it will inform you of the specifications, proper installation procedures and operation procedures. Also included in this manual are guidelines on how to properly service and care for your new Six Pac’s monobloc power amplifier.
Specifications for your new SIX PAC’S power amplifier. Operating the Six Pac’s power amplifier is a simple procedure. Each unit is designed for long term stability in virtually any home operating situation. Please note, if the unit is operated outside the parameters outlined in this owner's manual, damage may result. Please read this manual carefully before putting your new Six Pac’s in operation. The following definitions are applicable. Warnings should be followed explicitly.
1.3 Front Panel Features POWER ON/OFF SWITCH: AC mains switch and high voltage in “ON” position Red LED: Indicates the high voltage supply is ON and the fuse is intact. FEEDBACK SWITCH: Select between 0 or 10db of feedback. 1.4 Rear Apron Features RCA INPUT: Signal input connection via shielded interconnect cable SPEAKER OUTPUT: 5-way binding posts provide the signal output to the speaker system. Red = (+), Black = (-), ground IMPEDENCE SWITCH: 4 or 8 ohm selection.
Mishandling should be evident upon inspection of the shipping container. If chassis damage is found after a visual inspection, take care not to destroy the evidence.
If necessary, document the damage with photographs and contact the transport carrier immediately. Carefully remove your new power amplifier from its packing carton, and examine it closely for signs of shipping damage. It is recommended to save all the original packing cartons to protect your amplifier from damage should you wish to store it or ship it for after-sales service. 2.2 Warranty Card Fill out the enclosed warranty registration card and return it to Audio Electronic Supply, Inc.
3.1 Operation Your new power amplifier is ready for operation after the speaker, interconnect cables and the vacuum tubes have been installed into their proper sockets. Refer to the tube placement sheet at the end of this manual for proper tube installation. 3.2 4 or 8 OHM Speaker Selection Select the proper speaker impedance (4 or 8 ohm) for the speaker(s) in your system. The selection should be based on your current speakers’ rated specifications and listening tests to confirm the correct selection. 3.
4.2 Tube Replacement If it becomes necessary to replace the tubes in the amplifier, a matched set of output tubes of the same name brand should be used. A new tube kit is available from Audio Electronic Supply. You should get a few years or more from the output tubes with everyday usage and many years of use from the smaller 12BZ7 (or 12AY7, 12AX7) and EL-84 tubes.
WARNING! MAKE NO ATTEMPT TO PUT THE SIX PAC’S IN SERVICE WITH THE BOTTOM PLATE REMOVED. CONTACT WITH THE HIGH VOLTAGES FOUND INSIDE THE CHASSIS CAN BE FATAL! COMPLETELY REMOVE AC POWER PLUG FROM THE WALL AND ALLOW 30 MINUTES FOR THE HIGH VOLTAGE CAPACITORS TO DISCHARGE THROUGH BLEEDER RESISTORS BEFORE ATTEMPTING TO CHANGE TUBES OR CLEAN THE INSIDE OF THE AMPLIFIER. CAUTION NEVER REMOVE OR INSERT AC PLUG WHEN THE UNIT IS ON OR THE AC POWER SWITCH IS IN THE ON POSITION.
