That's the hard way.
Cut a piece of wood to fit across the back of the hole and put a bit of
packing on the middle to bring it approximately flush with the front..
Get hole cutter in drill and make new hole.
Remove the piece of wood.
Well yes if you have a router.
Do one pass with a bearing on the bottom to leave a rebate and then put
the bearing on the top and trim the rebate off.
Its a bit more expensive than some double sided tape, some scrap wood
and a cheap hole cutter.
It also depends on there being enough area for the base or using a
Probably because of the transmission line path inside. The only access
seems to be through the back panel connector block which is about 4"
square and has the crossover on the back of it, and through the speaker
cutouts and the end of the transmission line port.
There are, but one could make a flat template guide with the required
hole in it and sit that on the top of the speaker. The use a bearing
guided bit to follow it. If building new cabinets from scratch it would
be the way to go.
Once working with an assembled case it would be hard not filling the
case with chips though (which given its a reflex transmission line
design (i.e. folded tapering wave guides), with copious amounts of
wadding in it, would be difficult to get out since its all glued together)
All you need is to provide a centre for your router guide if increasing
the size of the hole. Any rebates needed (if say the speaker unit fits
flush with the baffle) made first, before cutting the main hole. You may
have to do some hand router work for fixing lugs etc.
I have a pretty cheap router hole cutter that came from Lidl that is just
great for this. Most traditional routers can't go down to a small enough
radius for things like tweeters. Neither of my other ones do.
*ONE NICE THING ABOUT EGOTISTS: THEY DON'T TALK ABOUT OTHER PEOPLE.
Dave Plowman firstname.lastname@example.org London SW
Interesting, but recently I have noticed just how buggered up my hearing is.
Some music which used to sound so 'full' is now missing chunks of
frequencies and the originals sound like poor imitations. This is very
noticeable when hearing something from way back which I haven't heard for a
long time :(
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