250Ti only
02-10-2005, 01:17 PM
Hi Everyone,
My 250Ti's are from 1986, teak veneer
I have modified/improved them over the years:
1.moved the crossover outboard, flexible mounting at rear1989,
2 rewired with MIT wiring 1989
3 soldered connections with Cardas,1989
4 reinfoced the rear of the cabinet with 1 inch MDF,'92
5 reinforced front and side walls using lead plates, glued and screwed, '94
6 braced internal walls using old table legs especially around the woofer
7 added lead plate to bottom of speaker, remounted tiptoe type feet
8 had a lead weight made for the top of the speaker, '96
9 had JBL authorized repair depot bypass 1 capacitor at their suggestion'98
10 reconed woofers by JBL '98
11 changed damping to cotton felt on walls& hanging strips,removed fiberglas
12 added speaker enacoms---excellent improvement, especially to bass, 2003
13 added 3/8 inch felt to exterior front baffle-lovely improvement 2003
All of these changes made very noticeable improvement to sound--indicating the basic design, drivers and crossover were capable of much better sound than as sold. The main things I have enjoyed is the extra delicacy, imaging and dynamics.
Still love these speakers & expect further improvements with right work.
Comments, suggestions, critique all welcome.
Are there improvements for the drivers?
Are there any parts of the crossover that I can upgrade without messing up the sound? Capacitors, resistors, inductors?
Would I gain an improvement by hard wiring the crossover parts to a board of more ideal material using better wire?
Why do Enacoms, speaker and AC, improve the sound?
How can I battery charge the caps?
Hope this may be of interest or provide ideas for some.
Cheers,
250Ti only
My 250Ti's are from 1986, teak veneer
I have modified/improved them over the years:
1.moved the crossover outboard, flexible mounting at rear1989,
2 rewired with MIT wiring 1989
3 soldered connections with Cardas,1989
4 reinfoced the rear of the cabinet with 1 inch MDF,'92
5 reinforced front and side walls using lead plates, glued and screwed, '94
6 braced internal walls using old table legs especially around the woofer
7 added lead plate to bottom of speaker, remounted tiptoe type feet
8 had a lead weight made for the top of the speaker, '96
9 had JBL authorized repair depot bypass 1 capacitor at their suggestion'98
10 reconed woofers by JBL '98
11 changed damping to cotton felt on walls& hanging strips,removed fiberglas
12 added speaker enacoms---excellent improvement, especially to bass, 2003
13 added 3/8 inch felt to exterior front baffle-lovely improvement 2003
All of these changes made very noticeable improvement to sound--indicating the basic design, drivers and crossover were capable of much better sound than as sold. The main things I have enjoyed is the extra delicacy, imaging and dynamics.
Still love these speakers & expect further improvements with right work.
Comments, suggestions, critique all welcome.
Are there improvements for the drivers?
Are there any parts of the crossover that I can upgrade without messing up the sound? Capacitors, resistors, inductors?
Would I gain an improvement by hard wiring the crossover parts to a board of more ideal material using better wire?
Why do Enacoms, speaker and AC, improve the sound?
How can I battery charge the caps?
Hope this may be of interest or provide ideas for some.
Cheers,
250Ti only