I still have a set of the large Advents in the "nice" boxes but am missing the woofers. Instead of having them refoamed, the original owner decided to use the magnets for something else. Can one still get ahold of the woofers easy and cheaply enough?
The peerless ct62 is probably the best cone tweeter made for the diy crowd. Very good sound in them. In sweden you can get an improved version made as a replacement for the Carlsson speakers. Theyre sold by HifiKit and is called Obi T22.
HIFI KIT ELECTRONIC AB - Högtalarelement HiFi Hembio Billjud/Marin Studio PA/DJ Kablage Tillbehör
It has a neodymn magnet thats very large for this kind of driver. Handling two tweeters can cause serious injury if not handle with care. Makes for a very high sensitivity. Ferrofluid in the gap makes sure they can handle some power aswell. They sound very good. Although Im not sure how well they work in a normal box. I have one here but havent had time to put it in a baffle and measure it. (Its made to stand as it is in one or more pairs)
This thread have some measurements of it though wich give you a sense of their dispersion and also their sensitivity compared to the older MT20 (predesessor of the CT62)
A picture of one the carlsson speaker it was made for can be found here CarlssonPlanet.com • Carlsson OA-5.3
An externally hosted image should be here but it was not working when we last tested it.
HIFI KIT ELECTRONIC AB - Högtalarelement HiFi Hembio Billjud/Marin Studio PA/DJ Kablage Tillbehör
It has a neodymn magnet thats very large for this kind of driver. Handling two tweeters can cause serious injury if not handle with care. Makes for a very high sensitivity. Ferrofluid in the gap makes sure they can handle some power aswell. They sound very good. Although Im not sure how well they work in a normal box. I have one here but havent had time to put it in a baffle and measure it. (Its made to stand as it is in one or more pairs)
This thread have some measurements of it though wich give you a sense of their dispersion and also their sensitivity compared to the older MT20 (predesessor of the CT62)
A picture of one the carlsson speaker it was made for can be found here CarlssonPlanet.com • Carlsson OA-5.3
I know at least one company claims to sell "drop-in" replacement woofers for this Advent & they even look the same, but don't know if they actually perform the same as the originals (BTW these woofers are not replacements for the version with the masonite ring).
So it might be a better idea to search around the net and find some original woofers pulled from damaged cabinets & use those instead.
Nice! A little bit expensive though, at $51 for one.
Serious injury? 🙁 How could they injure a person?
I guess a DIYer could mount it on top of the enclosure like B&W does with their Nautilus series. 🙂
That looks interesting - a number of other companies also used upward facing woofers in some of their systems (Allison, Bose's 601, and EPI for example). The Carlsson must have had a very wide & airy soundstage with all those tweeters facing in multiple directions!
And JBL's striking slot-loaded Aquarius 3 was sort of 🙂 in the same category.
I think he means that if you get two too close together they might squish your finger.
O.K. that makes sense, especially because it brought back an ancient memory of my own magnet-based pain!
Back in the late 70s (yea I'm old 😀) as a kid I was just starting to get into science and experimenting, and ordered a magnet from the Edmund Scientific catalog*. The @3" u-shaped magnet was supposed to be super strong and I found out the hard way that was oh-so-true when one time I was trying to see how close I could get it to a metal desk without it actually attaching to the sheet metal. Well I didn't realize the tip of one of my fingers was hanging over the edge of the magnet and when it finally did attach it did so with a bang! - it really was as powerful as advertised - and yikes, did that fingertip get abused! Very painful.
* Edmund was taken over in the early 2000s(?) and their business was split up, resulting in a more hobbyist-oriented catalog and another one for optical professionals. Anyway, just like with Radio Shack's catalog, I looked forward to the latest edition of this catalog with great excitement: all that cool stuff in there, much of it a kid could afford and many of it mentioned in the sci-fi books I was reading at the time. And, they sold parts for astronomical telescopes so you could build your own (something I still would like to try) even including the mirror if you wanted to be really adventurous
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Hello,
sorry to write in such an old thread, but thought that it might be helpful:
another cone tweeter: Tonsil GDW 9/60/2
http://www.tonsilaudio.com/pdf/GDW_9_60_2_4_En.pdf
about the speaker- it was produced in Poland since the beginning of eighties with cooperation with... Pioneer 😀. Still available for less than 10 USD
sorry to write in such an old thread, but thought that it might be helpful:
another cone tweeter: Tonsil GDW 9/60/2
http://www.tonsilaudio.com/pdf/GDW_9_60_2_4_En.pdf
about the speaker- it was produced in Poland since the beginning of eighties with cooperation with... Pioneer 😀. Still available for less than 10 USD
in this case this thread could be of interest:
http://www.diyaudio.com/forums/mult...eeter-overview-without-ferrofluid-wanted.html
http://www.diyaudio.com/forums/mult...eeter-overview-without-ferrofluid-wanted.html
Somehow deciding on a driver construction rather than selecting on performance seems backwards. Cone, dome, planer, reverse dome, paper, unobtanium; it is the result that matters.
This is what Elbert said in the opening post:
"So perhaps a large "beaming" tweeter" (cone) isn't such a bad thing after all?"
Another feature of cone tweeters (paper) is that they can be crossed low and shallow.
Some old school speakers actually had a rather amazing off-axis smoothness, like A25 and many 3-ways. Response often falls down rapidly after 15kHz, which was not a problem in the days of turnables, and AM/FM radios
"So perhaps a large "beaming" tweeter" (cone) isn't such a bad thing after all?"
Another feature of cone tweeters (paper) is that they can be crossed low and shallow.
Some old school speakers actually had a rather amazing off-axis smoothness, like A25 and many 3-ways. Response often falls down rapidly after 15kHz, which was not a problem in the days of turnables, and AM/FM radios
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