Rich, You're Welcome.
The Lansing library is a wonderful source of information. Especially for us JBL freaks. (I still own a pair of completely restored L-112s). They are an awesome sounding speaker. The crossovers were modified by Mark Levinson in 1982 and are 93db efficient @1 watt/1 meter. Levinson originally used the L-112 as a monitor speaker in his lab located in Woodbridge, Ct.
I am presently using Energy Veritas 2.2s. An extremely "polite" speaker in relation to the JBL.
Unfortunately, I lost my interest in JBL once Harman International took JBL over. IMHO, the company went straight downhill after that. But, pre-Harman, JBL was a VERY serious player in the loudspeaker industry.
What a shame.