I used a Bloc80b in high school in 1986-87 or so. It replaced a Yamaha monstrosity that was about 5x the size of the Yorkville and sounded maybe half as good. I remember that the font on the amp made the "oc" look like "ue," so the guys in the band used to call the amp "Blue Bob." "Hey, where's Blue Bob?" "I think he's still in the van " Yorkville ; Bloc 80B Bass Amp ; My Reviews Write A Review. Yorkville Bloc 80B Bass Amp. By mowif, March 5, 2003 in Bass Effects Overall Rating. View All Reviews; mowif's Reviews; View More Reviews for this Product; 300 Yorkville & Traynor PDF files (Adobe Reader XI) on DVD R FREE SHIPPING ALL AROUND THE WORLD! BLOC 50G 100G 100GT Service manual BLOC 80B Schematic BLOC 100K Schematic C170P Service Manual C1890 Service Manual C2285 Service Manual C2560 Service Manual Search the support documentation for service technicians - service test equipment, measuring equipment (oscilloscope, pc oscilloscope, digital oscilloscope, usb oscilloscope, digital multimeter, analog multimeter) by different manufacturers (Fluke, Wavetek, Tektronix ) Search our database of Service manuals, schematics, diagrams, pcb design, service mode, make-model-chassis, repair tips and View and Download Yorkville BM100 instruction manual online. Manuals and free owners instruction pdf guides. Find the user manual and the help you need for the products you own at ManualsOnline. Yorkville Bloc 80B Bass Amp. By Adam-YQlv3, September 6, 1999 in Bass Effects Overall Rating. View All Reviews; Adam-YQlv3's Reviews Get the guaranteed best price on Solid State Combo Bass Amplifiers like the Yorkville Bloc 80b Bass Combo Amp at Musician's Friend. Get a low price and free shipping on thousands of items. be one receipt. 6 month special financing excludes open box gear and cannot be combined with promotional coupons or manual discounts. No interest will be Yorkville Bloc 80B Bass Amp. By Derrick-MC7l4, July 3, 1999 in Bass Effects Overall Rating. View All Reviews; Derrick-MC7l4's Reviews; View More Reviews for this Product; We have 19 Yorkville Diagrams, Schematics or Service Manuals to choose from, all free to download! yorkville 400b power amplifier schematic [4 MB] yorkville a44 power amplifier service manual [2 MB] yorkville ap800 power amplifier service manual [1 MB] yorkville ap1200 power amplifier schematic service manual [414 KB] yorkville ap2020 power