Regarding the crossover,
You might want to consider the 3113b variant. For my L-150's I modified an L-112 Crossover to the 3113b as well as replacing the L#5-10 with a more efficient LE5-9 (big difference!) and the 2214H woofer from the L100T. The result is very nice depth, detail and powerful crisp bass. The L-150A is a direct bolt-in from the L-112 (unlike my L-150's, which aren't "A"'s) and the low frequency crossover coil on the L-112 is a much beefier unit than the lightweight little L-150 coil. Plus, they aren't going to run you $228 a pair, just wait for a pair of L-112 Crossovers to come up on Ebay.

One of our senior members (who I'll not name) was extremely helpful and offered this from his extensive knowledge


"Yeah, the L150 used a network similar to the L110, L110A and L212. I couldn't remember off the top of my head what the capacitor value on the LE5 was in the original L150. The L150A used the same network as the L96 and L112.

If I were you I'd use the 3113B network in your L150's. Download the 3113B schematic from JBL Pro and build it. Don't worry about the 033 being there instead of the 044 or 066. Compare the 3113B schematic to the L96, L112, or L150A schematic. You can also use any of them and just add the 3.0 uF capacitor to the 13.5 uF capacitor (The 3113B already has the 16.5 uF capacitor). You might need to put a different conjugate on the 2214H and that's pretty easy. If you use the LE5H, LE5-9, LE5-11, or 2105H (3113B, N96, N112, N150A) instead of the LE5-10, or LE5-12 you should notice an improved midrange. The LE5-10 and LE5-11 both have the black face in case that matters.

I've actually replaced the N212 networks in my L212's and the N96 networks in my L96's with the 3113B's and definitely like the greater presence, especially on DVD playback. "

Here's a link or two
http://audioheritage.org/vbulletin/s...ighlight=L-150

http://audioheritage.org/vbulletin/s...ighlight=L-150

Many months later, I am still very happy with these and have modified my little brother's L-150A's as well. I did do an A-B comparison before modding his pair of L-150A's and my speakers clearly sounded much better.

Just a thought.