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Tannoy Dual Concentric Speakers - Serial Numbers
Series Model Approx Year Serial Number Notes Location
Monitor Black 1947-1951  
15" 300xx
    30035 First digit "3" in s/n is questionable, and could be "0" NY, USA
    011 985 Mounted in corner reflex cabinet Sussex UK
    012 225 CA, USA
12" 10 116
Monitor Silver 1951-57  
15"   015 695 Milwaukee, USA
    017 920 Canada
LSU/HF/15L 017 977
018 366
    018 516 Canada
018 548
    023 044 fitted to GRF enclosure
023 064
027 217 with later, sealed crossover
12" 014 376
LSU/HF/12/L 014 432
    015 403 with un-potted (un-sealed) crossover
016 159 Silver-Blue special finish (possibly for PYE?)
    016 917 UK
    018 304 repaired with foam roll-srrounds located in Chile
    019 934 repaired with foam roll-srrounds located in Chile
    020 931 UK
    026 759
12" Direct Radiator    
LSU/12.L. 1959 013 003 Green Magnet, silver cast basket, aluminium dome New Zealand
    027 061 Green Magnet, silver cast basket, aluminium dome, decal on side N Is., New Zealand
    027 570 Green Magnet, silver cast basket, aluminium dome, decal on side N Is., New Zealand
Monitor Red 1958-1967  
15"   028 557 brown/orange dustcover, decal on side of magnet cover Australia
LSU/HF/15/L   029 701 brown/orange dustcover, decal on side of magnet cover Australia
  036 994 with brown/orange dustcover
  1959 038 331 decal plate on rear of magnet cover
038 542 with brown/orange dustcover
    038 581 orange dustcover, no decal on rear of magnet cover, gray gasket Wellington NZ
041 923 cone 37-751/001 orange dustcap, brown gasket, decal on rear LA / CA / USA
    045 716 cone 38-751/001 black dustcap, white gasket, decal on rear LA / CA / USA
    042 237 with brown/orange dustcover NZ
046 346 with black dustcover
    046 503 with black dustcover, white gasket, decal on rear Sth Virg USA
    046 563 with black dustcover, white gasket, decal on rear Sth Virg USA
    047 049 with black dustcover, white gasket, decal on rear Braids Hill, NZ
    047 332 with black dustcover, white gasket, decal on rear Braids Hill, NZ
    047 340 with black dustcover NZ
    047 961 with black dustcover Ramona, CA, USA
    048 018 with black dustcover Ramona, CA, USA
    048 310 LF cone part 16/751001, black dust cap, decal on rear of magnet
    048 498 no decal plate on rear of magnet
    048 536 no decal plate on rear of magnet
    049 471 no decal plate on rear of magnet, white gasket, black dust cap Wellingtopn NZ
    051 070 decal plate on rear of magnet cover, black dust cap Nth VA, USA
    051 093 decal plate on rear of magnet cover
    051 124 decal plate on rear of magnet cover
    053 255 decal plate on rear of magnet cover Nth VA, USA
054 973 with black dustcover
  1966 055 486 Melbourne Australia
  1966 055 770 Melbourne Australia
    056 539 Canada
056 955 with plastic red/pink magnet caps
057 037 with plastic red/pink magnet caps
    058 673 with plastic red/pink magnet caps Braids Hill, NZ
    058 718 with plastic red/pink magnet caps Wellington NZ
    058 889 with plastic red/pink magnet caps Wellington NZ
    069 896 MDC/15/SC, pink plastic caps, plastic crossover with control USA, Grand Rapids
    069 951 MDC/15/SC, pink plastic caps, plastic crossover with control USA, Grand Rapids
LSU/HF/15.L (late RED) ~1966 063 655 Magnet decal says "Monitor" (no "GOLD"). Chassis is buff, magnet cap is gold. Crossover is plastic-cased. Denmark
  ~1966 063 682 Magnet decal says "Monitor" (no "GOLD"). Chassis is buff, magnet cap is gold. Crossover is plastic-cased. Denmark
    070 656 Magnet cap red plastic, "Monitor", in black & silver decal, chassis is buff grey (not hammer tone) UK
    107 023 Factory re-worked Reds? Grey chassis (not hammertone), Pink plastic magnet caps, Decal says "Monitor", Decal is sliver & black, plastic cased gold-style crossover (no decal), only one 3-position treble control Phoenix, USA
    108 109 Factory re-worked Reds? Grey chassis (not hammertone), Pink plastic magnet caps, Decal says "Monitor", Decal is sliver & black, plastic cased gold-style crossover (no decal), only one 3-position treble control Phoenix, USA
12"   028 404 decal transfer on side of magnet, & orange dust caps
LSU/HF/12/L   028 800 decal transfer on side of magnet, & orange dust caps
    030 536 QLD, Australia
    036 996 orange/brown dustcap, brown gasket, decal on rear, LF & HF coil 12 Ohms, Chatsworth cab. Oakton, Va, USA
  037 446 orange dust caps
    037 660 orange dust caps
    042 313 orange/brown dustcap, brown gasket, decal on rear, LF & HF coil 12 Ohms, Chatsworth cab. Oakton, Va, USA
    043 953 white gaskets, s/n on frame-leg Los Bano, CA, USA
    046 731 black dust cap, white gasket, decal on rear of magnet cover NY, USA
    046 941 black dust cap, white gasket, decal on rear of magnet cover NY, USA
    048 612 white gaskets, s/n on frame-leg Los Bano, CA, USA
    048 906 NY USA
    055 411 black dust caps, black gaskets, metal hammertone magnet cap Portland, USA
    055 421 black dust caps, black gaskets, metal hammertone magnet cap Portland, USA
    056 005 located in Chile
    057 095 located in Chile
12" (late Red)   067 913 Gold magnet cover. Decal says "Monitor" (no "Gold"). Slovenia
LSU/HF/12/L   068 101 Gold magnet cover. Decal says "Monitor" (no "Gold"). Slovenia
    078 298* with plastic red/pink magnet caps Zagreb, Croatia
*high serial number
IIILZ (10") 036 231
    038 583 with orange dust cap NY, USA
    039 624 with orange dust cap NY, USA
    046 371 black dust cap Milan, Italy
    046 408 black dust cap Milan, Italy
Monitor Gold 1967-1974  
15" 25/03/1969 068 743 Canberra
LSU/HF/15/8 069 151
  069 190
    071 676 Fitted to Lancaster cabinets
074 493
074 618
    075 992 Fitted to Lancaster cabinets
    077 480 Fitted to "Mallorcan" cabinets (USA) CA, USA
    077 501 Fitted to "Mallorcan" cabinets (USA) CA, USA
    082 200 purchased approx 1972 Lincolnshire UK
    082 484 purchased approx 1972 Lincolnshire UK
    084 338 LF cone 751 007 Melbourne Australia
    084 481 LF cone 751 007 Melbourne Australia
    084 635 Manchester UK
    085 416 in Lancaster cabinets Hampshire UK
    085 424 Canberra
    085 567 Canberra
    096 898 Manchester UK
    096 011 in Lancaster cabinets (factory sealed port) Lincolnshire UK
    096 180 in Lancaster cabinets Hampshire UK
    096 647 in Lancaster cabinets (factory sealed port) Lincolnshire UK
    101 235 Canberra
    107 561 in Lancaster cabinets (factory sealed port) UK
    107 837 in Lancaster cabinets (factory sealed port) UK
    108 642
    108 680
    109 315
    109 337
    109 421 Mounted in Tudor Autograph enclosure
    115 571 Factory production code C29898, bought 1972
  1970 115 760 Possibly circa 1970
    115 841 Factory production code C29946, bought 1972
    117 642
    117 865
    117 986 Surrey, UK
    118 623 Surrey, UK
  Nov-72 119 867 In Lancaster cabinets Oxford , UK
    120 582 In Lancaster cabinets Oxford , UK
    128 195 Input terminals are on control-panel. Full recess for surround retaining screws. UK
  1971 129 969
  1973 ? 132 073 In GRF Windsor enclosure, originally purchased 1974, US$1134 LA, USA
132 110
132 386
    132 464 Input terminals are on control-panel. Full recess for surround retaining screws. UK
    133 090
    133 530 Near the end of Monitor Gold production run
  1973 ? 134 166 In GRF Windsor enclosure, originally purchased 1974, US$1134 LA, USA
12" 067 737
  1968 067 814 In USA Belvedere boxes (ser no B1838) Atlanta USA
LSU/HF/12/8 068 019
  1969 068 916 In Lancaster enclosures Oxfordshire UK
    069 011 Vancouver, Canada
    069 013 Vancouver, Canada
    084 889 LSU/HF/12/8, were in Lancaster cabinets London, UK.
    085 218 LSU/HF/12/8, were in Lancaster cabinets London, UK.
    101 169 LSU/HF/12/8, but have rubber surrounds Rochdale, UK
    101 526 LSU/HF/12/8, but have rubber surrounds Rochdale, UK
    114 502 LSU/HF/12/8RS - rubber surround
    114 518 LSU/HF/12/8 - but photo possibly showed a rubber surround?
    114 788 LSU/HF/12/8 - but photo possibly showed a rubber surround?
    115 239 LSU/HF/12/8RS - rubber surround
    118 949 Rubber surround, but decal says LSU/HF/12/8 UK
    119 308 Rubber surround, but decal says LSU/HF/12/8 UK
    121 033 LSU/HF/8/12/RS - rubber surround Oxford, UK
    121 182 LSU/HF/8/12/RS - rubber surround Oxford, UK
    121 261 LSU/HF/12/8RS - rubber surround
    121 283 LSU/HF/12/8RS - rubber surround
123 941
123 870
    140 138 Chatsworth cabinets, rubber surround, input conn. on control panel Oxfordshire UK
    143 022 Chatsworth cabinets, rubber surround, input conn. on control panel Oxfordshire UK
IIILZ (10")   059 655 LSU/FH/III.LZ/8 Surrey UK
LSU/HF/III.LZ/8   059 656 LSU/FH/III.LZ/8 Surrey UK
    071 212
    071 423
    071 437 LSU/HF/3LZGH/8
    071 521 LSU/HF/3LZGH/8
    099 293 Circular flange Oxford UK
    100 558 Circular flange Oxford UK
    105 735 LSU/HF/III.LZ/8 Denmark
    105 801 LSU/HF/III.LZ/8 Denmark
    109 587 LSU/HF/3LZG/8 in Tannoy cabinets Sussex, UK
    109 696 LSU/HF/3LZG/8, squared flange on basket York, UK
    116 597 LSU/HF/3LZG/8 in Tannoy cabinets Sussex, UK
    117 263 NZ
  117 324
    117 402 LSU/HF/3LZG/8, squared flange on basket York, UK
    116 961 NZ
    131 300 LSU/HF/3LZG/8U Braids Hill NZ
  134 325
145 268 LSU/HF/3LZG/8U Braids Hill NZ
Monitor HPD 1974-1979  
     
HPD 385   200 628 Also chassis stamped 137 084 -- possible last-Gold, first HPD?
HPD385's have 24-Sep-75 205 935 HPD's in Rectangular-York Enclosures
"41/" s/n prefix   209 306 HPD / 385A. Mk.1, inspected by D.R.Andrews UK
    210 139 HPD with gold-style knobs crossover, and input terminals on same panel as control knobs. Decal: HPD385/8. "Tannoy" cast into frame. S/n on id plate. UK
    220 481 HPD with gold-style knobs crossover, and input terminals on same panel as control knobs. Decal: HPD385/8. "Tannoy" cast into frame. S/n on id plate. UK
  222 390
1977 402 965
HPD 385A Mar-77 503 838
Mar-77 503 840
    385 / 507 159 Arden Mk 1 cabinets, purchased 1981 in Perth Perth, Australia
    385 / 507 276 Arden Mk 1 cabinets, purchased 1981 in Perth Perth, Australia
514 223
514 248
    524 009 mounted in Berkley enclosures Calgary Canada
    524 013 mounted in Berkley enclosures Calgary Canada
HPD 385B   41 / 221 657 Grey chassis, no magnet cap. http://hornet.hi-fi.hr/
    41 / 221 685 Grey chassis, no magnet cap. http://hornet.hi-fi.hr/
]
HPD 315 10-Mar-75 203 628 HPD's in Lancaster enclosures
HPD385's all have   205 783 In Chatsworth Cabinets Oxford, UK
"31/" s/n prefix   206 109 In Chatsworth Cabinets Oxford, UK
  208 212 mounting holes are slots, rebate for each rear screw USA USA/Indianapolis
  211 727 mounting holes are slots, rebate for each rear screw USA USA/Indianapolis
    504 662 mounted in Cheviot enclosures Oxford, UK
    504 751 mounted in Cheviot enclosures Oxford, UK
    506 150 mounted in Cheviot enclosures Canada
    516 020 Chelmsofrd UK
    516 025 Chelmsofrd UK
    517 173
     
     
HPD 295 n/a
    203 023 HPD/295/8, dated 8 July 1975, in "Chevening" cabinets. Glos, UK
Monitor Royal  
(Canada only)
15" 202 950 Monitor Royals have blue magnet covers Toronto
202 956 Toronto
    203 403
    203 439
12" - 1260   31 / 203 018 Slotted mounting holes Montreal, Canada
     
Other  
Arden Mk II DC386 3926/004028 Ceramic Magnet Arden
Westminsters TW cabinets (not drivers) E55 013822P & 013824P
3828 003909 Ottowa Canada
003951 Ottowa Canada
3808 812.980 Denmark
861.623 Denmark
3859 31-Oct-83 880 758 No magnet covers
878 446 No magnet covers