Costs of bringing 4343 drivers to factory spec
Well, it's not cheap!
These are the prices JBL recently charged for recone or new diaphragms and remagnetization.
2 x 2405 $314
2 x 2420 $601 (new dampener pad - 2421 diaphragm)
2 x 2121 $517
2 x 2231A $365 (2235 cone kit)
Shipping $180 (to JBL, depends on distance)
$1977 total
An alternative is to replace the 2231A's with 2235H's and to pad the woofer down by 1dB to match the different sensitivity. Ian reminded me about this. The 2235H's at $382/pair street price are essentially the same cost as 2231A recones and remags and raises the power capacity. The specs for 2231A are 100w and 2235H 300w - don't know what the specs for the hybrid would be.
John
PS - see subsequent commentary on "padding"
Re: Costs of bringing 4343 drivers to factory spec
"An alternative is to replace the 2231A's with 2235H's and to pad the woofer down by 1dB to match the different sensitivity."
No, the woofers don't need to be padded down. There is plenty of slop in the L-Pads. Besides, the 2231A has a sensitivity of 93.36 dB W m and the 2235H has a sensitivity of 93.16 dB W m.
"The specs for 2231A are 100w and 2235H 300w - don't know what the specs for the hybrid would be."
Roughly 200 W for a "2235A" due to the improved materials in the 2235 coil assembly.
Re: Re: Costs of bringing 4343 drivers to factory spec
Quote:
Originally posted by Giskard
No, the woofers don't need to be padded down. There is plenty of slop in the L-Pads. Besides, the 2231A has a sensitivity of 93.36 dB W m and the 2235H has a sensitivity of 93.16 dB W m.
Right, I meant padding by either adjusting the L-pads in the passive crossover or potentiometers in the active crossover.
As for sensitivity, I guess it depends on what set of specs one looks at - I remembered the figure and read it somewhere and can't find it now.
John
