Owner Manual Guitar Amplifier SJ-12T

ManualsBrandsAmpeg ManualsMusical Instrument AmplifierSJ-12T

Summary of content (12 pages)

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Thank you for selecting the Ampeg Classic SuperJet guitar amplifier. Revived from the sixties and ready for the nineties, this easy-to-use amplifier represents Ampeg’s quest to provide you the finest instrument amplification systems available. In order to get the most out of your new amplifier, please read these instructions before its use. Table of Contents: The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 The Rear Panel . . . . . . . . . . . . . . . . .
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Declaration Of Conformity #35, Effective 01-01-2001 Manufacturer’s Name: Production Facility: Production Facility: Shipping Facility: Office Facility: SLM Electronics 11880 Borman Drive, St. Louis, MO 63146, USA 700 Hwy 202 W, Yellville, AR 72687, USA 1400 Ferguson Ave., St. Louis, MO 63133, USA 1400 Ferguson Ave., St. Louis, MO 63133, USA Product Type: Audio Amplifier Complies with the following Standards: Safety: EN60065, E60065, C22.
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TRE SUPERJET MODEL SJ-12T 4 5 6 4 7 3 1 GUITAR 2 ACCORDION 13 9 VOLUME 4 7 14 9 10 0 B TONE 5 7 8 2 15 9 10 0 T 6 3 8 2 10 0 6 3 8 2 5 SPEED The Front Panel: 1. Guitar Input accepts the output from your instrument by means of a shielded signal cable. This input signal to this jack is not attenuated and accommodates instruments with standard output signals. If your instrument has a strong output signal, use the Accordion Input (#2). 2.
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ET OLO REVERB 4 5 6 4 7 3 8 2 16 9 0 10 INTENSITY 5 6 OFF 7 3 8 2 17 9 0 8 10 9 ON DIMENSION 6. Tremolo-Intensity sets the depth of the tremolo effect. For slow, smoother vibrato effects try the Intensity control at around 6 and the Speed control at 1. For the really wild sounds, crank the Intensity up towards 8 (or beyond) and go from there. 8. Power light illuminates (iridescent blue) when the amplifier is turned on. 9. Power switch is used to turn the amplifier on and off. 7.
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10 (Reverb cables: do not disturb) 11 12 13 14 15 The Rear Panel: 10. Power cord connects the amplifier to a suitable source of A.C. voltage. This is a grounded, three-wire cord and must be connected to a properly grounded outlet. DO NOT attempt to defeat the ground connection of the power cord! If your amp was purchased outside of the United States, see the sticker next to the A.C. connector for its power ratings. Follow the above guidelines. 11,12. Power Tubes: 6L6 (2) 13.
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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 evacuated lamp. Years later, in 1905, Fleming expanded on Edison's discovery and created the "Fleming Valve". Then, in 1907, Dr. Lee de Forest added a third component – the grid – to the "Fleming's Valve" and the vacuum tube was a fact of life. The door to electronic amplification was now open.
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Important Information About Tubes and Tube Products (Continued): low-end response and produces more harmonics at mid and high frequencies ("creamier" sound). These differences become more noticeable at higher volumes. The 6L6 tubes produce a big low-end thump and have a very good dynamic range. They offer a more traditional "American Rock" sound. The 6V6 tubes produce a creamy sound with nice distortion.
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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 and tapping lightly on each tube with the end of a pencil or a chop stick (my favorite). You will be able to hear the tapping through your speakers, which is normal. It is not normal for a tube to ring like a bell after it’s tapped. If it does ring then it’s microphonic and should be replaced.
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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 contribute to early tube degradation and may cause premature tube failure. • Make sure the speaker(s) are properly connected prior to turning on the amplifier.
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System Block Diagram: 6L6 V3 GUITAR INPUT 12AX7A PHASE SPLITTER V2A 12AX7A V1A VOLUME TONE 12AX7A PHASE SPLITTER V2B ACCORDIAN INPUT SPEAKER 6L6 V4 REVERB 12AX7A TREMOLO OSCILLATOR V1B SPEED INTENSITY 11
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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 12”, 50 w, 8 ohm, 1.5” voice coil diameter, 34 oz. magnet POWER REQUIREMENTS 120 VAC, 60 Hz, 110VA 100/115 VAC, 50/60Hz, 110VA 230 VAC, 50/60Hz, 110VA SIZE AND WEIGHT 21” W x 17” H x 10.25” D 40 lbs. Ampeg continually develops new products, as well as improves existing ones.