Zen Mod said:
I'm in late to this thread .... hope i'm not repeating something that is said in the next 4 pages...
What vinatge is that unit... except for the whizzer it doesn't look much like any of the Philips i'm used to seeing, but as Zen Mod says if it is anything like the ones from 70s, early 80s it should do well on an OB...
what wood did you use for the phase plugs?
dave
Mayday said:
The stuff i buy at the art store is already mixed up... i've been using it on whizzers to good effect, but i hesitate to use it on the main cone -- i prefer to use puzzlecoat (a PVA that remains a bit more flexible than wood glue)... http://www.t-linespeakers.org/design/tweeks.html
i thin it until it is runny, and on a full range use 2 (or maybe 3) coats on the front-- using almost as little as possible. If i wwant to significantly stiffen the cone, i'll also do the back... you end up with a poor mans sandwich cone -- but in a full-range this isn't always the best thing, since the cone needs to flex to get decent HF performance. Too much and you can turn a FR into a midbass.
An externally hosted image should be here but it was not working when we last tested it.
You can't really tell that the cone has been puzzlecoated in this one, but you can see how the damar has changed the colour of the whizzer (it used to match the surround)
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