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Ampeg Bass Amplifier B15R User Manual

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    Page 1 OWNER’S GUIDE
    Page 2 Thank you for selecting the Ampeg B-15R Portaflex Bass Amplifier. Revived from the past and enhanced for the present, this limited production model offers all of the best features of the 1960’s classic plus more. In order to get the most out of your new amplifier, please read these instructions before its use. FEATURES: • 0db and -15dB Input Jacks • Tube Bias Select Switch • Patented “Flip Top” Enclosure • Ultra High / Ultra Low Boosts • Impedance Selector (8/4 Ohms) • Ampeg Vintage 15” Speaker • Input...
    Page 3 B-15R PORTAFLEX 124 3 6791011121358 1,2: INPUT JACKS:Connect the signal cable from your instrument to either of these jacks: if your bass has active electronics, its output may be “hotter” than normal – the -15dB jack is padded to accommodate such sig- nals. If your bass has normal pickups, use the 0dB jack. 3,4: ULTRA HI / ULTRA LO BOOSTS:Engage these pushbutton switches to boost the highs or lows as desired. These switches activate the boosts at their “in” positions. 5: GAIN CONTROL:Adjust this control...
    Page 4 B-15R PORTAFLEX TECHNICAL SPECIFICATIONS: OUTPUT POWER RATING100 watts @ 5%THD, 8 ohm load, 120VAC SPEAKER SIZE AND RATINGAmpeg Vintage 15”, 8 ohm, 150 watt, 2” voice coil, 56 oz magnet High Efficiency Piezo Tweeter, 8 ohm, 150 watt (w/network) CROSSOVER FREQUENCY3kHz ULTRA HIGH SWITCH6dB Boost @ 4kHz ULTRA LOW SWITCH10dB Boost @ 40Hz BASS CONTROL25dB Range @ 40Hz MID CONTROL34dB Range @ 200, 400, 900, 1.5k or 2.5kHz TREBLE CONTROL30dB Range @ 4kHz INPUT IMPEDANCE0dB: 3M ohms; -15dB: 47k ohms MAX....
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