Celestion Ditton 44

[Mothman]

There is a good thread on the vintage radio forum regarding tweeter replacement, well worth a read if considering

http://www.vintage-radio.net/forum/s...ad.php?t=55474

[wiicrackpot]

Still running mine.

Good, long may it continue.

There is a good thread on the vintage radio forum regarding tweeter replacement, well worth a read if considering

http://www.vintage-radio.net/forum/s...ad.php?t=55474

Thanks, will trawl through that once i'm fed and rested, never knew about that site before.

[wiicrackpot]

Can't wait till the weekend so went out to buy spade connectors and duly crimped,don't want to solder incase i didn't like the sound so easier to move on,
sounding lovely so just the matter of widening the hole on the baffle,was thinking of borrowing a hole drill bit but feel a bit unsure,
as i will be drilling it freehand and there being a existing 65mm hole there already, anyone any ideas.

http://imageshack.us/scaled/large/854/001hsd.jpg

[walpurgis]

Hi Andy, glad things sound promising.

A hole saw is not the right tool to widen an existing hole as you'd have no way of centering it and it would wander about chewing wood up. I don't know how much material you need to remove, but it can't be much. I reckon a rotary rasp in a drill will probably do it OK. Just take it very gently and finish off with a hand file and sandpaper.

[Rare Bird]

Bloody Cowboys

1: Router:
2: Deep Profile trimmer bit (Bearing at the top (none cutting end) of the cutter/at the base of the shank)
3: Piece of 1/4''' MDF to make a cut out template for the router)

The MDF wants to be long enough for you to use the Mid Range unit fixing ter hold it in place.. Once you made perfect cutout in you MDF template you can't go wrong really.

Will the new tweeter completely cover the old faceplate recess?

[walpurgis]

"Cowboys" indeed!

I was just trying to keep it simple Andre. I agree, a router would do a nice job, but I suspect Andy's bit of woodwork is a small one off and unless he's going to do more, a router and cutter bits is quite an expensive investment.

Any work done with a rasp will be hidden and if done with care should be adequate.

[Rare Bird]

"Cowboys" indeed!

I'd be climbing the walls if i knew i had an hand trimmed cut out behind my tweeters

[wiicrackpot]

Hi Andy, glad things sound promising.

A hole saw is not the right tool to widen an existing hole as you'd have no way of centering it and it would wander about chewing wood up. I don't know how much material you need to remove, but it can't be much. I reckon a rotary rasp in a drill will probably do it OK. Just take it very gently and finish off with a hand file and sandpaper.

Yes Geoff, sounded braw and thanks for the heads up btw,

Been thinking at work today and think the hole saw idea is doable but only if i made a 5mm thick template with outer circumference,
held in place by the 3 clamps then criss cross to find centre, then drill the whole way through,
but will the template be thick enough give me enough purchase to stop hole saw drill bit from going off centre.

Bloody Cowboys

1: Router:
2: Deep Profile trimmer bit (Bearing at the top (none cutting end) of the cutter/at the base of the shank)
3: Piece of 1/4''' MDF to make a cut out template for the router)

The MDF wants to be long enough for you to use the Mid Range unit fixing ter hold it in place.. Once you made perfect cutout in you MDF template you can't go wrong really.

Will the new tweeter completely cover the old faceplate recess?

Don't hold back dude.

Point #1 is out, can't get a hold of a router whereas i coiuld borrow a hole saw bit from work, lost me #2 and thought about point #3.

The tweeter won't cover the recess being slightly smaller than original, but thats o.k., i am gonna make a gasket from non slip mat that'll cover the slight exposed ring or i could just paint the recessed bit black, either way it'll be fine.

[Rare Bird]

As long as you get a good seal, You could fit some tweeter absorption pads over the new face plates which will disguise the gap..

http://www.diffractionbegone.com/newblankcontact.html

[wiicrackpot]

The seal is no problem, the tweeters actually have very thin foam backing to seal them to the baffle, quite nifty wee tweeters, anything i am doing is just cosmetic.