I am cooking up a plan for improving these speakers. I think I have it worked out, but I wanted to run it by you to see what you think. I have some L65As. The first thing I noticed about these speakers was that the bass wasn't very good. There was obvious cabinet resonance and the bass was so boomy I had to get them a foot off the floor to be listenable. Even then it didn't sound so much like music as it did a little woofer doing a decent job. The mids and highs were good, but so hot that I have the controls turned almost all the way down. I have pretty good amplification available and have tried these with a Mac C20/Audio Research VT60 and a Luxman 1000/McIntosh 2200, my usual amp. In general the fundamentals don't seem to be keeping up with the overtones. It may be that the refoaming the 122s underwent has made them less efficient. The cabinet is not the ideal size indicated by the T/S parameters for these woofers, and it could use some more bracing, but I think I will jettson these woofers and cabinets both. I want to move toward the 4315 and the 250ti. I would be happy to buy a set of these speakers, but they come up for sale so seldom, that I have decided to take action. I have some woodworking tools and speaker-building experience, so that is no problem.
I've assembled some 1400nd woofers and some 2118H mid-woofers to use with the 2105 mids I now have and the 077s from the originals. I have woofer housing recommendations that originated with Greg Timbers. Here's the thing. I can use the original crossovers and bi-amp the woofers, but I prefer not to. I'm now using a Phillips SA1000 straight into the MC2200 since it has input level controls. If I bi-amp I must put a preamp into the chain, and I think none is better. Anyway, I prefer the simplicity of one amp. I would like to cross over the woofers at no higher than 400, preferably 300. What crossover should I use? Any other suggestions would be heartily considered and appreciated.
Thanks,
speakerdave