cgregory4
08-18-2014, 04:59 PM
My first post on the Lansing Heritage forum, a couple years ago, related to a pair of 4313s I purchased from California. I was less than impressed. But, when the 4425s showed up, I "saw the light." :)
The disease hit hard. Two more sets of 4425s. A trip to Burbank for some L300s. And, most recently, a pair of 4430s (Yes, you were right. They do shame the 4425s. :o: )
In between, I hit the market hard for crossovers, drivers, horns -- all things JBL. The man-cave has never sounded better. Or, been more of a complete mess!
So, I decided to embark on 'improving' the sound from the original 4313s. The lows had been too boomy, and the mids too harsh. So, I emptied the cabinets, and proceeded to follow this cerebral path for modification:
1. Low frequency driver: LE10H-1. Heavy, competent, good reports.
2. 5" mid: LE5-2, based solely on heft. It just screams, "JBL!"
3. 066 tweeters from original (I think.).
4. Excursion to the garage discovers 3 likely sets of crossovers to tie all this together. Two of the sets were L96. One set had much larger inductors on it. Again, choosing the weightiest crossover, I discovered it would fit the screw pattern in the back of the 4313.
5. By now, it is obvious to the casual observer, just how much serious scientific thought I invested in the project.
6. Placing the pots in the middle position of the range, I stuffed all the above into the 4313 cabinets.
7. With the McIntosh MC2155 powering the 2-way Sota (for which I have great respect) on the left channel and the 3-way 4313X on the right, I adjusted the separate gains for 'sorta equal' SPLs.
The 4313X sounds fantastic! The mid-range from the 'chunky' 5-2 is outstanding! The bass is tight and controlled. In short I fell into some sort of accidental JBL Nirvana design, using component 'heft' as the overriding design criteria. I have no clue where the crossover cycles are, nor the specs of the components! I just know it sounds fantabulous! (Just remember to use the crossover from the L96 with the 'big-ass' inductor! :D )
Un-bleeping-believable, the change! What fun!
Greg
Now, it's on to the 43XX project using 2X15" woofers to reduce acreage requirements. Any ideas? I have gathered up the woofers, a low/mid, a horn unit, a babycheek, a 2405, and at least 3 frequency dividers for each side (with tri-amp? :blink:) Any advice?
The disease hit hard. Two more sets of 4425s. A trip to Burbank for some L300s. And, most recently, a pair of 4430s (Yes, you were right. They do shame the 4425s. :o: )
In between, I hit the market hard for crossovers, drivers, horns -- all things JBL. The man-cave has never sounded better. Or, been more of a complete mess!
So, I decided to embark on 'improving' the sound from the original 4313s. The lows had been too boomy, and the mids too harsh. So, I emptied the cabinets, and proceeded to follow this cerebral path for modification:
1. Low frequency driver: LE10H-1. Heavy, competent, good reports.
2. 5" mid: LE5-2, based solely on heft. It just screams, "JBL!"
3. 066 tweeters from original (I think.).
4. Excursion to the garage discovers 3 likely sets of crossovers to tie all this together. Two of the sets were L96. One set had much larger inductors on it. Again, choosing the weightiest crossover, I discovered it would fit the screw pattern in the back of the 4313.
5. By now, it is obvious to the casual observer, just how much serious scientific thought I invested in the project.
6. Placing the pots in the middle position of the range, I stuffed all the above into the 4313 cabinets.
7. With the McIntosh MC2155 powering the 2-way Sota (for which I have great respect) on the left channel and the 3-way 4313X on the right, I adjusted the separate gains for 'sorta equal' SPLs.
The 4313X sounds fantastic! The mid-range from the 'chunky' 5-2 is outstanding! The bass is tight and controlled. In short I fell into some sort of accidental JBL Nirvana design, using component 'heft' as the overriding design criteria. I have no clue where the crossover cycles are, nor the specs of the components! I just know it sounds fantabulous! (Just remember to use the crossover from the L96 with the 'big-ass' inductor! :D )
Un-bleeping-believable, the change! What fun!
Greg
Now, it's on to the 43XX project using 2X15" woofers to reduce acreage requirements. Any ideas? I have gathered up the woofers, a low/mid, a horn unit, a babycheek, a 2405, and at least 3 frequency dividers for each side (with tri-amp? :blink:) Any advice?