Fire escapes ?!Originally Posted by Old Guy
GM
Fire escapes ?!
GM
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That's often the easiest, and most direct route for moving large PA and equipment racks and boxes.
Many venues(even schools) have some type of restrictions at the patron entrances that restrict people flow to a single file line, some even have turnstiles.
Fire exits and fire escapes have long been used for load in/load out access. This usually doesn't pose any problems with regard to rules/regs as it is done outside of the venue's hours of operation to the public.
Of course laws and regulations vary from city to city and state to state.
Not all vegetables make good leaders.
Hi all,
If you build a cabinet for 817 with 515b woofers, can the woofers be swapped to 515G or vice versa?
https://greatplainsaudio.com/wp-cont.../07/515b-1.pdf
https://greatplainsaudio.com/wp-cont...-Series-01.pdf
The cab is tuned somewhat higher than either's Fs, so yes, just may need different EQ frequency shaping.
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
I meant, if an Altec 817 cab is made to house 515b, canthe 515g be swapped? I am asking from a mechanical view point.
The specs for the bolt mounting holes say 14 9/16 - round holes, for 515B.
The mounting hole for G is 15
https://greatplainsaudio.com/wp-cont.../07/515b-1.pdf
https://greatplainsaudio.com/wp-cont...-Series-01.pdf
bonzo, if you build a 817 cabinet for a 515b with a 14 9\16 bolt hole diameter the g will fit. if you build a 817 cabinet to the altec plans the 515b will not fit. they list the bolt hole diameter at 15 inches. and in the 816 at 15 1\8. i never knew this till i looked it up this evening. i have 816 cabinets at work and will verify this tomorrow. which is funny since they give a listed output of a 515b in a 816 cabinet
thanks. I don’t have much understanding of carpentry.
Why does 14 91\16 bolt hole allow 15 to fit, but not vice versa
Interesting! Thanks!
Never noticed it nor can recall anyone that posted and/or PMed me using these drawings for DIYing pointed this out.
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
Of course they can.If you build a cabinet for 817 with 515b woofers, can the woofers be swapped to 515G or vice versa?
Later 515B is built on the same 16 inch frame as 515G.
The 16 inch frames have slots rather than holes for the mounting bolts such that they will work with a range of different bolt circles.
The slots and the bit of forgiveness they offer in getting the bolts started in their respective T-nuts is well appreciated. Those fellas who have loaded 515's into 210 cabinets without help know exactly what i'm talking about.
- - - Updated - - -
After some point in 1975 515B looks like the one in this pic:they list the bolt hole diameter at 15 inches. and in the 816 at 15 1\8. i never knew this till i looked it up this evening. i have 816 cabinets at work and will verify this tomorrow. which is funny since they give a listed output of a 515b in a 816 cabinet
Not all vegetables make good leaders.
FYI/FWWIW, etc., the late Bill Eckle's small, large format driver compilation w/ woofers:
The Wayback Machine - https://web.archive.org/web/20120122...MALL/Altec.htm
The Wayback Machine - https://web.archive.org/web/20090614...ARGE/Altec.htm
edit: BTW, anybody know how to convert these HTML to some other type (jpeg/whatever) to store on our computers?
Last edited by GM; January 28th, 2023 at 09:10 PM.
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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