Photos:

  • Mark IIb front view (504,644 bytes JPG file)
  • Mark IIb back view (369,738 bytes JPG file)

    • Mesa/Boogie Mark-IIB manual pages:

  • Maintenance and Repair page 1/4 (190,340 bytes GIF file)
  • Maintenance and Repair page 2/4 (246,806 bytes GIF file)
  • Maintenance and Repair page 3/4 (190,045 bytes GIF file)
  • Maintenance and Repair page 4/4 (161,416 bytes GIF file)

  • Operating manual page 1/2 (255,186 bytes GIF file)
  • Operating manual page 2/2 (251,524 bytes GIF file)

  • Schematic diagram (287,059 bytes GIF file)

  • Mark-IIb Operating Manual (18,430 bytes PDF file)

    • Electro-Voice Black Shadow:

  • EVM 12L Lead Guitar Loudspeaker (182,881 bytes PDF file)

    • Tubes:

  • Tube FAQ (By Triode Electronics Online)
  • Mesa / Boogie tube description (excerpted by David B. Lamkins)
  • 6l6 review (The Tubestore comparison chart for 6L6)
  • Sylvania 6L6GC
  • 12AX7 (Mullard) (174,421 bytes PDF file)
  • 12AT7

  • Sylvania 6L6 Specs page 1 (761,362 bytes GIF file)
  • Sylvania 6L6 Specs page 2 (751,742 bytes GIF file)
  • Sylvania 6L6 Specs page 3 (724,407 bytes GIF file)
  • Sylvania 6L6 Specs page 4 (560,845 bytes GIF file)
  • Sylvania 6L6 Specs page 5 (538,129 bytes GIF file)
  • Sylvania 6L6 Specs page 6 (531,749 bytes GIF file)

  • RCA 6L6-GC Specs page 1a (38,721 bytes GIF file)
  • RCA 6L6-GC Specs page 1b (42,166 bytes GIF file)
  • RCA 6L6-GC Specs page 2a (42,302 bytes GIF file)
  • RCA 6L6-GC Specs page 2b (39,905 bytes GIF file)
  • RCA 6L6-GC Specs page 3a (32,714 bytes GIF file)
  • RCA 6L6-GC Specs page 3b (13,800 bytes GIF file)
  • RCA 6L6-GC Specs page 4a (57,476 bytes GIF file)
  • RCA 6L6-GC Specs page 4b (67,749 bytes GIF file)
  • RCA 6L6-GC Specs page 5a (64,408 bytes GIF file)
  • RCA 6L6-GC Specs page 5b (51,335 bytes GIF file)

  • 6L6WGB MIL Specs (80,408 bytes PDF file)
  • RCA Radiotron manual (8,304,478 bytes PDF file)

    • Just for reference another state of art machine:

  • JCM-900 Series Marshall (86,577 bytes PDF file)