JBL Paragon - D44000
Matt Garrett - Dallas Texas - 214-878-3823
Paragon #236 is currently being offered to other like collectors!
150-4C Information
Paragon 236 came with 150-4C Serial #s 11603 and 11624. You are looking at the originals here but they now have new correct cones in them! The original cones were aged and rebuilding these LF drivers properly is one of the biggest assets I have ever done to any Paragon. Most people cry original, original, but the LF sonic quality just went up a good 40% with this work and they now are balanced too. The still are factory... Just not original from 1958... Most people do not realize what the LF drivers have lost over the years, even in pristine shape. The magnets get degaussed, the coils loose their resistance and get way unbalanced and of course the paper ages on the cones obviously. I did not believe the difference myself until the before and after. The same happens to the 375 and the 075 to an extent, but not the extent of the LF drivers. PS... the 375s and 075 are all with .5 of an ohm just FYI. After tracking down and purchasing a pair of JBL original 150-4C replacement cones that have not been available for a very long time and paying a crazy price to obtain, I sent the units off to have the cones installed and the Alnico magnets charged and balanced. These photos below are documenting me receiving the 150-4Cs from David at Vancouver Audio and showing the exact match on the meter of the pair.
150-4C #11624 150-4C #11603
150-4C #11624 (Left channel)
150-4C #11603 Metering 8.2 Ohms (16 ohm speakers meter 8-12 typically with no load)
150-4C #11624 Metering 8.2 Ohms
Going Back In
Paragon 236 open without 150s or back panels on
Close View of Driver Mount and LF Horn Port
See the back of the 375s. These have never been removed and can only be read with a mirror.
See the 075 VHF Driver.
150-4Cs Back in Place
236 Put Back 100%
Paragon 236 Driver Complement
Right Channel
VHF JBL 075 16 Ohm SN# 9775 Meter 8.4 Ohms-reading date 05/08 1958 Original Driver
HF JBL 375 16 Ohm SN# 24455 Meter 8.2 Ohms-reading date 05/08 1958 Original Driver
LF JBL 150-4C 16 Ohm SN# 11603 Meter 8.2 Ohms-reading date 05/08 1958 Original Driver, Re-coned 04/08
Left Channel
VHF JBL 075 16 Ohm SN# 8100 Meter 8.4 Ohms-reading date 05/08 1958 Original Driver
HF JBL 375 16 Ohm SN# 24453 Meter 8.2 Ohms-reading date 05/08 1958 Original Driver
LF JBL 150-4C 16 Ohm SN# 11624 Meter 8.2 Ohms-reading date 05/08 1958 Original Driver, Re-coned 04/08
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