Norelco 9762Ms by Dan Marshall I was just viewing your Webpage and noticed your invitation to share FR driver experiences. My experience is somewhat limited, but for what it is worth, I have had the Norelco 9710M 8 1/2 inch speakers. They are not bad for a cheap speaker. They are a bit aggressive in the upper range and tend to beam quite a bit, high frequency extension is quite good, but the mid-treble didn't seem to be very refined. I built a small tower for one of them, ducted reflex, tuned to their Fs (43 Hz), volume was perhaps a couple cu ft, it has been a while, maybe 2 1/2 cu ft. It seemed happy and had quite nice, strong bass down to around 40 Hz. I had a NOS Goodmans Axiom 10 recently, but sold it. I thought it sucked. I suppose it had some good features, like, it didn't tend to beam as badly as the Norelcos. In fact it was so neutral, that it sounded somewhat sterile. Its main shortcomings are low efficiency and low power handling capacity, a bad combination. I am currently listening to a pair of 12 inch Norelco 9762Ms and they really tromp. Fs is 40 Hz. I have them in 4 cu ft enclosures tuned to 32 Hz and the bass response is quite excellent, very natural sounding, better than anything else I have tried thus far, including the 12" Tannoy Golds (with paper surrounds). Using the pink noise and microphone on a BSR EQ-3000, the response, at the listening position measures substantially flat across the band and is down a relatively few dB at 32 Hz and 16 kHz. Efficiency is around a hundred dB and they handle plenty of power. They do tend to beam rather badly, but they are mounted fairly close to the floor, so you are never in the beam. At the normal listening angle they measure and sound pretty flat, frequency-responsewise. The high end can be improved with a super tweeter, but they don't sound at all bad just running full range. All in all, quite a bargain (I bought them on ebay for $28 for the pair). They have a very lively sound which I have grown to like. I had $3,000 Linaeum 10 speakers, but sold them, as I preferred the Norelcos. The 10s were very smooth, but lacked midrange and the bass was not as tight or as high quality as the Norelcos, plus the efficiency was only 88 dB. Norelco 9762M I feel no need to mess with horns to get good, powerful bass with the 9762Ms, and I have always liked bass, since I was a kid. In fact when I went to work out of high school, the first thing I bought was a bass fiddle. I was driving them a while back with a little pair of Heath AA-191s (SE 6BQ5) amps and they had plenty of volume, and plenty of bass. It was amazing to see a cheapie little amp with a 2 watt capability at 40 Hz cranking out strong, solid, deep bass with an amazing amount of impact. I have a couple CDs with obnoxiously strong, deep bass and they are a bit too much for the little Heath amps, but they seem to do well on all other music. I have some nice tar-filled 800 Hz multicellular horns and 1 inch drivers I probably will use with them, mainly to get the acoustic centers up to seated ear level without the beaming problem. For bass performance I compared them with some pretty good speakers, like EV 12Ws, Dynaudio 30W54s, Altec 417-8H (which makes quite nice Hi-Fi woofers), Some JBL 15 inch K-145/E-145, JBL LE-14s and some more, which I forget at the moment, and the cheapie Norelcos whupped them all. I am currently gathering the parts for SE amps, probably using SV 811-10s. Top