I accidentally blew the tweeters on my Bic DV64 speakers with feedback from a microphone (I think). I'm having trouble getting in touch with anyone at the company about it. So I figure it's a good opportunity to try to upgrade them.
Hopefully, somebody can point out any mistakes I'm about to make.
Apparently they're crossed over at 3 khz. And I'm hoping the 8ohm specification applies to the tweeter as well as the speakers in general.
Based on that information, the Dynavox TD2801XL seem like they should be a pretty good match. Any apparently someone had luck with this tweeter on the bookshelf version with the same drivers. So I ordered a pair. The only problem is the hole sizes are going to need to be increased.
My plan for this is to cut out the right size hole in some mdf or plywood with a router and circle jig. Then use the router with a pattern bit to transfer it to the speaker enclosure. I'm assuming that the inner hole doesn't need to be a precise fit.
The tweeter will have to be centered a bit higher than the original one, I don't know if that will cause any problems.
I'm apprehensive about all the dust this will make. I figure it's a good idea to remove all the drivers and such. And then vacuum it out really well. Maybe that will be enough.
Hopefully, somebody can point out any mistakes I'm about to make.
Apparently they're crossed over at 3 khz. And I'm hoping the 8ohm specification applies to the tweeter as well as the speakers in general.
Based on that information, the Dynavox TD2801XL seem like they should be a pretty good match. Any apparently someone had luck with this tweeter on the bookshelf version with the same drivers. So I ordered a pair. The only problem is the hole sizes are going to need to be increased.
My plan for this is to cut out the right size hole in some mdf or plywood with a router and circle jig. Then use the router with a pattern bit to transfer it to the speaker enclosure. I'm assuming that the inner hole doesn't need to be a precise fit.
The tweeter will have to be centered a bit higher than the original one, I don't know if that will cause any problems.
I'm apprehensive about all the dust this will make. I figure it's a good idea to remove all the drivers and such. And then vacuum it out really well. Maybe that will be enough.
It is fashionable today to have the supertweeter on a stand on top of the woofer box. If you are not keeping knick knacks on top, this can work for you. Certainly temporarily to be sure these new tweets are a good match to the system.
http://fmarvasti.com/Repairs/PolkSuperTweeter.JPG
http://thumbs.ebaystatic.com/images/g/5hQAAOSwInxXN4vN/s-l225.jpg
https://s-media-cache-ak0.pinimg.com/564x/ac/03/ff/ac03ff80fbd043e9a846263b5b119cd7.jpg
Agree that whacking particle board is a big drag. Personally I would seek a smaller tweet which would fit the hole (even gappy) rather than make that mess.
http://fmarvasti.com/Repairs/PolkSuperTweeter.JPG
http://thumbs.ebaystatic.com/images/g/5hQAAOSwInxXN4vN/s-l225.jpg
https://s-media-cache-ak0.pinimg.com/564x/ac/03/ff/ac03ff80fbd043e9a846263b5b119cd7.jpg
Agree that whacking particle board is a big drag. Personally I would seek a smaller tweet which would fit the hole (even gappy) rather than make that mess.
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The Vifa looks extremely similar and seems like it would be a perfect fit. The crossover on the speaker seems too low for it though at 3khz when the minimum response of the tweeter is listed as 3.4khz.
https://www.madisoundspeakerstore.c...estige-19tff1-h0737-3/4-textile-dome-tweeter/
Modern-day replacement from Madisound $32 each.
Modern-day replacement from Madisound $32 each.
And also P-E has a 'Peerless by Typhany' version $20:
Peerless by Tymphany D19TD-05 3/4" Poly Dome Tweeter
Peerless by Tymphany D19TD-05 3/4" Poly Dome Tweeter
The replacement is complete, overall a success.
My circle came out a very tiny bit irregular, nothing anyone would ever notice and I don't expect it makes a difference in sound. The router also tore off some of the fake wood, also not noticable under the fabric.
I used paper, masking tape, and a plastic trash bag to control the dust with the router. To make the circle that the tweeter actually fits through, I used a chisel and a file. It took a while, but the dust was very manageable.
The upgrade to the sound is substantial over the previous tweeters. Violins for instance always sounded like they had a practice mute on them, but no longer.
My circle came out a very tiny bit irregular, nothing anyone would ever notice and I don't expect it makes a difference in sound. The router also tore off some of the fake wood, also not noticable under the fabric.
I used paper, masking tape, and a plastic trash bag to control the dust with the router. To make the circle that the tweeter actually fits through, I used a chisel and a file. It took a while, but the dust was very manageable.
The upgrade to the sound is substantial over the previous tweeters. Violins for instance always sounded like they had a practice mute on them, but no longer.
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