Nice find... I've got a set of these too, the Norman Lab model 11 basically took the place of the older Model 7. Top notch cabinets on this series, looks like the woofers have been replaced, these would have had the white poly cones drivers, here's a blurry picture of mine. Still have your model 335's? I'd be interested in knowing what you think about them in comparison.
There's no felt around the tweeters...
The rare Norman Lab model 7, one of only a couple of Norman Lab speakers manufactured with a 12" driver.
Couple of questions for ya.....What is the impedance for the 11's? The original owner I bought these from says he never changed the woofers and said he bought them new. The woofers are 8ohms and are a Pioneer Woofer. I am a little reluctant to believe that the speakers are 8 ohm. Weren't most of the Normans 4ohm? The 335's are 4ohm and the woofers were replaced with some CTS woofers that don't sound bad but are not original. I think Norman outsourced most of their drivers and since there is little information on the net I thought I would ask you since you seem to know a lot about Norman Labs. Do you know the EIA code on the 10" Polycones that were used in a lot of the Normans? I would like to get both sets back to original if at all possible or a more suitable replacement for the woofers. As far as a comparison at present the 11's sound better to me but without having original woofers in both sets it would be hard to make a subjective comparison. Decent 4ohm 10" drop ins may be hard to find. Any suggestions would be greatly appreciated. If you have any 10" Polycones layin around or know where I can find some shoot me a PM.
Thanks,
Rick
Just did a Multimeter at the speaker outputs for the 335's (3.3ohm) and the Elevens (25.2 ohm) :scratch2:
basicblues......Also wanted you to see thes Phillips 477's I recently picked up as the build quality and drivers reminded me so much of Norman Labs I was curious if the Norman Lab guys may have taken a page from Phillips or vice-versa when these were designed...These speakers are Keepers. I have already refoamed the 12" Heppner Woofers and am just blown away by these large 3 ways. The original owner was 80 years old and purchased them new. I am fairly confident the Heppner's are original. They sound Fantastic...........
Norman Lab did indeed out source their driver components so if those are Pioneer drivers they are definitely not original. Norman Lab primarily used Credence drivers which has a EIA code of 117. The early Norman Lab examples will have CTS (EIA 137) speakers but everything else I've seen since about 1975 has had Credence drivers. The Credence driver also evolved over time starting with a paper cone with butyl rubber surrounds until around 1980, then the white poly cone with foam surrounds, then finally a black poly cone with foam surrounds until they went out of business.
i have the EQ they sold for the speakers. finally get to see the speakers!