[ My Webpage | Plasma Tweeters | Vintage Wurlitzers | Plexiglass Art | AudioCircuit.com ]

18" Vintage Lead Guitar Speakers by CTS


(ebay item # 1505984389, posted 1/23/02, SOLD 2/1/02)
    Are you looking for that classic vintage 70's tone?!? Do you want it to be heard? Then these speakers are for you! Two mint condition vintage 18" guitar (possibly bass, although they don't move much!) speakers made by Chicago Telephony and Switching in 1967. The specs are as follows:
  • Model: BG-80
  • Sequentially serial numbered!
  • 8 ohm each
  • ~150 watts peak each
  • 18 lbs each
  • Heavy Aluminum frame
  • 2.013" Voice coil, 4-layer Kapton.
  • 6"x6"x3/4" square strontium magnet
  • Heavy paper cone
  • Treated paper surround
  • Porous cloth dustcap
    These were purchased from McGee Radio Company in Kansas City in April, 1973. They were NEVER USED, but have a short piece of speaker wire soldered to them that was used to test them in 1973. They have been in storage in a dry, cool basement since then and have NO cone warping, scratches, dings or other aberrations on the cones. The aluminum frames have no corrosion, scratches, or dings in them. Aluminum is not magnetic, so none of the magnetic field intended for the voice coil gets pulled away from the voice coil, like it does in a steel framed speaker. There is a 0.2" rust spot on the back of the steel plate on speaker #1 which can be easily cleaned off (see below), but there is no other rust anywhere! The bolts on the magnet plates have a yellowish dust on them, but it can easily be cleaned off and will not affect the sound. They are in their ORIGINAL boxes with the original shipping stickers on them. The boxes are dusty on the outside, but perfectly clean on the inside.
CTS Model BG-80: Speaker #1 (top)
(click on any image to enlarge 4x)
Magnet view

Cone view showing date code

Back view
CTS Model BG-80: Speaker #2 (top)
(click on any image to enlarge 4x)
Magnet view

Cone view showing date code

Original Boxes
  • These speakers both have the following printed on the magnet plate:
    Custom Design
    by CTS
    BG-80
    137 - 745
  • Both cones have "1802-1" printed on them.
  • The date code is 137 - 745, "137" is for CTS (Jensen was "220"), "7" is the second digit of the year (1967), and "45" is the 45th week.
  • The speakers do not seem to have a serial number on them, but the boxes do. The boxes say: "SPEC: 5818006" and "SPEC: 5818007".
  • The shipping for these speakers: I visited UPS.com and estimated $60 for the pair by ground service. The cost will probably be a little less if you live in the north-east USA.

Dimensions

Serious bidders only, please; bidders who do not follow through with the deal will receive negative feedback. Buyer pays shipping from South East PA (19341), all sales are final. I can accept money orders, cashiers checks, or bank checks. Feel free to contact me for more information: cdanjo@aol.com.

18" Vintage Lead Guitar Speakers by CTS


[ My Webpage | Plasma Tweeters | Vintage Wurlitzers | Plexiglass Art | AudioCircuit.com ]