^^ So it sounds like we are on the same page then as I agree with Don's post as well? I don't like most bananas because they have poor connections, but the ones that allow you to tighten them seem to be just fine.
The Sound Lab's lowest impedance is actually between 1.5-3 ohms @ 20KHz depending on the position of the brilliance control. What is important to understand about the speaker is that its impedance curve is not related to its efficiency like a box speaker generally is. Its based on a capacitor. So the ability to double power as impedance is halved is not so beneficial with a speaker like this, and explains why zero feedback OTLs like we make can drive the speaker so well, despite their rather high output impedance. The MA-1 (which is the smallest amp in our lineup that I would recommend for Sound Labs) has an output impedance of about 2.3 ohms but does just fine on this speaker as long as the raw power requirements are sufficient.
BTW, and you can PM me on this if you like, are you aware that there is a new backpanel (introduced 2 years ago) that sounds better and makes the speaker easier to drive? Regardless of the amp you have the update is worthwhile! If you don't have the backpanel there are some simple mods that will get you about 90% of the way there. We have a lot of Sound Lab customers