Ampeg SJ-12T - Manuals - manualsarea.com

Page 2 - Important Information About Tubes and Tube Products

Table of Contents: The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Important Information About Tubes and Tube Products A Brief History Of The Tub...

Page 3 - IMPORTANT SAFETY INSTRUCTIONS; Declaration Of Conformity; SLM Electronics; Complies with the following Standards:

3 IMPORTANT SAFETY INSTRUCTIONS • READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS. • DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FORPROPER OPERATION, THIS UNIT REQUIRES 3” (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIRFL...

Page 4 - SUPERJET

4 1. Guitar Input accepts the output fromyour instrument by means of a shieldedsignal cable. This input signal to this jackis not attenuated and accommodatesinstruments with standard output signals.If your instrument has a strong outputsignal, use the Accordion Input (#2). 2. Accordion Input accepts...

Page 6 - connects the amplifier; DO NOT attempt to defeat the; is located up inside

6 (Reverb cables:do not disturb) (Reverb cables:do not disturb) 13 14 15 10 11 12 10. Power cord connects the amplifier to a suitable source of A.C. voltage. Thisis a grounded, three-wire cord and mustbe connected to a properly groundedoutlet. DO NOT attempt to defeat the ground connection of the po...

Page 7 - Important Information About Tubes and Tube Products:; A Brief History Of The Tube:

7 Important Information About Tubes and Tube Products: A Brief History Of The Tube: In 1883, Edison discovered that electrons would flow from a suspended filament when enclosed in an evac-uated lamp. Years later, in 1905, Fleming expanded on Edison's discovery and created the "Fleming Valve"...

Page 8 - Important Information About Tubes and Tube Products (Continued):

8 Important Information About Tubes and Tube Products (Continued): low-end response and produces more harmonics at mid and high frequencies ("creamier" sound). Thesedifferences become more noticeable at higher volumes. The 6L6 tubes produce a big low-end thump and have a very good dynamic ra...

Page 9 - The Importance Of Proper Biasing:

9 Important Information About Tubes and Tube Products (Continued): You can check your preamplifier tubes for microphonics by turning the amplifier on, turning up the gain andtapping lightly on each tube with the end of a pencil or a chop stick (my favorite). You will be able to hearthe tapping throu...

Page 10 - Survival Tips For Tube Amplifiers:; To prolong tube life, observe these tips and recommendations:

10 Important Information About Tubes and Tube Products (Continued): Survival Tips For Tube Amplifiers: To prolong tube life, observe these tips and recommendations: • Match the impedance of your speaker cabinet(s) to your amplifier. Improper impedance matching will con- tribute to early tube degrada...

Page 11 - System Block Diagram:; REVERB

11 System Block Diagram: GUITAR INPUT VOLUME TONE ACCORDIAN INPUT 12AX7A V1A 12AX7A TREMOLO OSCILLATOR V1B REVERB INTENSITY SPEAKER 12AX7A PHASE SPLITTER V2A 12AX7A PHASE SPLITTER V2B 6L6 V3 6L6 V4 SPEED

Page 12 - 0 dB Boost and Cut @ 4 kHz

Ampeg is proudly Made in America. A product of SLM Electronics, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A. SJ-12T TECHNICAL SPECIFICATIONS: OUTPUT POWER RATING 50 Watts RMS @ 5 % THD 8 ohm load 120 VAC SIGNAL TO NOISE RATIO 70dB Typical GAIN 62 dB TONE 30 dB Boost and Cut @ 4 kHz SPEAKER SPECS...