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Type: Posts; User: geoff727

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  1. Replies
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    I do have a picture somewhere. it's probably on...

    I do have a picture somewhere. it's probably on the computer that crapped out a few weeks ago. All you have to do is run a bead around both sides of the magnet. Smooth it with your finger into the...
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    Looking back at the photos, I forgot that we used...

    Looking back at the photos, I forgot that we used the 3-layer Sonic Barrier. I thought we used the 1-layer.

    One more thing about cap values...there is a well-regarded cap-maker, Sonicap by...
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    It took me a little while to remember this.... ...

    It took me a little while to remember this....

    See on the crossover schematic, there's the first 4.4uf cap in series with the tweeter? And then there's a paralleled combination of 4.4uf and 55uf,...
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    Given the cost parameters I worked within, I...

    Given the cost parameters I worked within, I wouldn't do anything differently. If they were my own speakers with an unlimited budget, I would have done a lot differently.....like build new, better...
  5. Need Help A product called Goof-Off helps remove a lot of...

    A product called Goof-Off helps remove a lot of glues and different things, and will not damage the polypropylene cones.

    G~
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    Need Help It is a lot. 8 for one set of RS2.5's-4...

    It is a lot. 8 for one set of RS2.5's-4 replacements plus a full set of spares. And enough for something else down the line. My other set of 2.5's is getting a Bohlender-Graebener stack, implemented...
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    I'm an AKer, and I love speaker mods. But it's...

    I'm an AKer, and I love speaker mods. But it's true that there are a lot of folks on the Infinity forum who are very resistant to mods on the classic Infinity's. That would not be ME, though! :)
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    Need Help Graz's diaphragms are definitely a nice product....

    Graz's diaphragms are definitely a nice product. When I bought mine, I built a baffle to compare the original vs. the Apogee-built ones. I preferred the Apogee ones enough to invest in 26 of them,...
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    Need Help It's true, they are not cheap. And buying a pair...

    It's true, they are not cheap. And buying a pair of speakers for the purpose of parting out does give money back when parts are sold. But here's the tough part....

    2.5's and 4.5's have lots of...
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    Need Help EMIM's don't "blow" in the conventional sense....

    EMIM's don't "blow" in the conventional sense. They do, however, have several other failure modes. Any experienced Infinity enthusiast knows this.....and knows some tricks to prevent some of it.
    ...
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    Need Help Jake, call me. I have lots of EMIMs, the drivers...

    Jake, call me. I have lots of EMIMs, the drivers he needs. I tested one of his EMIMs the day we were over there, and he is suffering from the classic metal fatigue problems on the traces. Some of it...
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    Need Help Thefoamfactory will also cut it your specified...

    Thefoamfactory will also cut it your specified dimensions, if you so desire. At least they used to.

    You want to use an open-cell foam in this application, not closed-cell. Your wool felt will...
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    I have used different fill materials that I've...

    I have used different fill materials that I've had lying around for several Polk speaker upgrades, always to increase the amount of fill inside the enclosures by supplementing the original rolls. I...
  14. A killer deal on a pair of 8's! Outstanding! ...

    A killer deal on a pair of 8's! Outstanding!

    I've heard a few people on the audiokarma Infinity forum say that those midranges end up sounding quite forward when placed in 8's or 9's, even though...
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    Thanks halo; how's those -IIIa's treating you? ...

    Thanks halo; how's those -IIIa's treating you?

    Here's a conceptual experiment of the absorptivity vs. frequency curve of these materials...

    Cover all interior surfaces of your listening room...
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    No, there is nowhere near total absorption....

    No, there is nowhere near total absorption. Little, in fact, and mostly only at higher frequencies. In the bass, there is hardly any absorption at all of the driver's backwave. Why? Because the...
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    Weird. It almost looks like someone re-coned it...

    Weird. It almost looks like someone re-coned it and attached a gasket to match the other one. A 1986 MW6502 is shiny and sticky, for sure.
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    Thank you all again for the nice words.

    Thank you all again for the nice words.
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    FYI One of these days let's run a test. GTMat vs....

    One of these days let's run a test. GTMat vs. NoRez. It's harder to compare Black Hole and 3-layer S.B., because they don't have the damping layer which adheres to the enclosure. But, we could use a...
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    Hey thanks! Well, if you are in Colorado, maybe...

    Hey thanks! Well, if you are in Colorado, maybe we can go have a beer at the Rocky Mountain Audio Fest next month? I'm flying into Denver on the 10th.
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    Thank you all for the compliments, I really...

    Thank you all for the compliments, I really appreciate it!

    They have had most of the day playing music to start to come back to life. Overall, my feelings about them are good. On the plus side,...
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    I should have said... 6502's or other appropriate...

    I should have said... 6502's or other appropriate driver considering the parameters.
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    Here's the photo I was thinking of, the crossover...

    Here's the photo I was thinking of, the crossover mounted inside the enclosure. It's hard to see, but it's on 1/4" standoffs, screwed down with just a bit of cement so nothing comes loose in transit....
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    Regarding time, money, sound, etc. These were...

    Regarding time, money, sound, etc.

    These were done for somebody else, of course. And there are always priorities given as far as what to spend money on and what not to. RDO198 vs. SL2500....not a...
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    And a few more pictures to finish up. Things...

    And a few more pictures to finish up.

    Things I like about this project:

    1. The carbon fiber. This is a big improvement. Aside from the exotic looks, it helps the damping of the front baffle....
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