New Guy

**Greg_M** · September 8th, 2011, 10:12 PM

I think the Xmax is maybe off by a decimal place.
0.05" is a bit under 1/16"

**Old Guy** · September 8th, 2011, 10:34 PM

Originally Posted by Greg_M

I think the Xmax is maybe off by a decimal place.
0.05" is a bit under 1/16"

Altec quotes Xmax at a given distortion, so it's very conservative. Modern Xmax is derived by physical measurement. Might wanna give GPA a call on that.

**Greg_M** · September 8th, 2011, 10:44 PM

Just looking at the 421A flyer. It's one of the few parameters they list,
Also just from memory, those puppies were moving a lot more than 1/16"

**Panomaniac** · September 9th, 2011, 12:49 AM

Poulsbo? The Norway of the North West?

**cradeldorf** · September 9th, 2011, 01:05 AM

Welcome Greg I hope you find what your looking for. If you can't find it here, it probably can't be found. are there any numbers on your baskets? like 391XXX that might help to date them.

**Greg_M** · September 9th, 2011, 10:04 AM

Originally Posted by Panomaniac

Poulsbo? The Norway of the North West?

Yes....the very one. (But we're moving to New Mexico when we can sell some property)

The numbers on the frame
391128
Serial # on tag 11153
In a box there is an AL (over) 91
also 391339R
The cone has 21353 printed on it (it's hard to read but I think that's it)

I've been thinking since I had the other one reconed (it was a mess) I might recone this one too, so they are the same. I tried to find one that had to be reconed but according to the guy I just got this one from it doesn't. Don't really like the idea of changing a working speaker, but what to do?

**Panomaniac** · September 9th, 2011, 10:14 AM

That's going to be a big change, Poulsbo to New Mexico. Congratulations. We did the opposite - Maui to Poulsbo. My wife freaked out.

**Greg_M** · September 9th, 2011, 10:44 AM

My other hobby (well, one of them) is astrophotography. NM has the driest, highest, clearest, darkest skies in the continental US. We'll be at 7400' in the Rockies of eastern AZ and western NM. A long way from everywhere. By The Very Large Array
Well be about 1-1/2 miles higher in altitude than we are now.

**Altec Best** · September 9th, 2011, 02:53 PM

Originally Posted by Greg_M

My other hobby (well, one of them) is astrophotography..

Hey Greg ! Welcome to the Board ! I enjoy that too.

I especially like to view the Nebula's. Sky's around here aren't the best though.Great Plains Audio is the Altec parts place in these parts.I'm glad you found the audio bug again.

Again Welcome to "The Altec User's Board" !