Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
This manual covers the main equipment features only. While it also includes the procedure for saving and loading from the now long obsolete memory cards it does not mention the how to operate with the optional floppy drive interface so I am still at a loss about how to use this! Note that there is a separate manual covering the MIDI interface and programming via the keyboard, not included in this download. You will also need to get hold of this if you want to use the MIDI interface properly. Basically there is little difference between this manual and the free to download manual for the similar PR60 model.
Good list of manuals. I found a very rare one and easily get. Should be promptly to download, as we must to wait hours even after confirmed payment.
Text excerpt from page 2 (click to view)
B-15R PORTAFLEX
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:
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0db and -15dB Input Jacks Ultra High / Ultra Low Boosts Input Gain Control Three Band EQ Five Position Mid Freq Select Master Volume Control Half-Power Switch
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Tube Bias Select Switch Impedance Selector (8/4 Ohms) Line Out/Line In jacks XLR Balanced Line Out Jack Line Out Level Control Pre/Post Select Switch Ground Lift Switch
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Patented �Flip Top� Enclosure Ampeg Vintage 15� Speaker H.F. Horn w/Level control 100 watts RMS All Tube Design Removable Dolly Board w/Casters Proudly Made In America