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Just had to post this one....
Couple of my buddies came and helped out unpacking and setting up....Thanks guys!
Just remember you get what you pay for and I paid with beers!.... http://www.hostboard.com/forums/
http://www.hostboard.com/forums/hbmc.../2008/04/3.jpg
<font size="2" face="Verdana, Helvetica, sans-serif">Howdy Bfish and Allan! http://www.hostboard.com/forums/Quote:
Cool!
The diaphragm replacement instructions cover cleaning and aligning the coil/gap;
http://www.greatplainsaudio.com/LgDrvrDiaRepl.pdf
If i may be so forward, i believe the concern is this.
He's not installing a "new" phragm and doesn't have a locating shim.
So long as he replaces the diaphragm in the same orientation it was removed, can't he simply skip steps 8 thru 13 in the GPA instructions?
Can the centering shim be purchased seperately from GPA in case of misalignment??
I have no experience with these earlier large format drivers, i'm familiar with the adjustable locating pins, and in the newer drivers you can pull the existing phragm for inspection/cleaning and replace it without the worry of upsetting allignment.
I've done this in the past with 291's with no trouble.
Do the earliest 288's use this same method?
<font size="2" face="Verdana, Helvetica, sans-serif">Heh, I was actually thinking about trying to talk you into looking at this one via mail...Feel like giving it a go?Quote:
I have no experience with these earlier large format drivers
<font size="2" face="Verdana, Helvetica, sans-serif">I'm flattered and i'd gladly help you Allan, but there's nothing i can do, that you cannot do yourself with a steady hand, a careful screwdriver, and a little guidance. If you can successfully mount a cartridge in a headshell and align it, you can handle the inner workings of a compression driver.Quote:
Heh, I was actually thinking about trying to talk you into looking at this one via mail...Feel like giving it a go?
Honestly, if you're going to risk shipping something like that, there's only one place to send it, to GPA.
IMO, you have some very valuable and worthy collectibles, they should only leave your possession for one of two reasons, either to GPA to the most competent professionals to deal with them, or to their next caretakers.
Hmm- interesting- what was known as Simplex "w" bins around here were actually a w-bin, similar to a single 155" version of the Shearer bass horn...Those were known commonly as "RCA" w-bins in these parts.
A while back I pointed out a sey on FleaBay, Steve S. Seemed to think they were made for IPC by Jensen.
I think these came along with Cinemascope installs in sets of 3 with a manual changeover switch to accomodate various sound formats.
House EQ was accomplished by swapping caps in the changeover box instead of the XOs. Similar-sized Altec installs useds A1s.
...well OK, the garage
http://www.hostboard.com/forums/hbmc.../2008/04/2.jpg
Finally got my set of 3 Simplex W LF horns with 515's and 3 288B/1005B tar filleds... http://www.hostboard.com/forums/
Pix are here...
http://www.audiokarma.org/forums/sho...d.php?t=157376
or here....
http://audioheritage.org/vbulletin/s...ead.php?t=9168
I do have one question. Well, one question at the moment. One of the 288's is distorting, and I am wondering how difficult/risky it would be to take the driver apart and see if it is just some dust or grunge in the unit, or a bad 'phragm. I would hate to F it up, and am considering having a more knowledgeable individual actually do this for me. Is it simple enough to handle myself, or should I bow to greater wisdom and experience?
Thanks....
A.A.
Cool!
The diaphragm replacement instructions cover cleaning and aligning the coil/gap;
http://www.greatplainsaudio.com/LgDrvrDiaRepl.pdf
So the thought is that the woofers might be Jensen rather than Altec? Is there any way to tell for sure?
Thanks,
Allan
BTW, the LF horns do have Altec VOTT decals on both sides and the removable rear panel...