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Old 02-26-2013, 05:23 AM
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Default Reconing FT1s

Is there anything i need to purchase besides the recone kit to install these?

Is it a common sense install after unbolting the heatsink off?

I didn't blow them, hehe, but one of them grounded to the frame from temporary install and caused some damage to it acoustically.
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Old 02-26-2013, 05:52 AM
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Yep, I reconed both of mine, pretty straight forward. The recone should be all you need. You will need to solder the leads on though. There is a paper type ring gasket thing that will want to fall out when you do it, keep it. I lost one because I didn't know it fell out and had alittle play in one. It eventually bit the dust because of that I think.
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Old 02-26-2013, 06:32 AM
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Damn it man!
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Old 02-26-2013, 12:33 PM
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ah.. that happened days ago, i told u bout it. I just now realized some odd sound.

But i still need to rule out the amp too..

The amp could also be damaged on that channel as well! It did blow the fuse when it happened but it's a cheap amp.

The output of the tweeter resonates at many frequencies and only audibly puts out 40% of it's power compared to other tweeter.

Figured i order several kits anyways due to how cheap they are.
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Old 03-16-2013, 08:46 PM
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Ok, so i got some recones for these FT1s and before i find time to do this, i want to show you guys something so you can help me with something.

The FT1s i'm reconing both did the following and I need to know why-

This picture here of the recone-


That entire metallic housing gets destroyed inside the heatsink and just shreds into pieces. When it does that, it causes the tweeter to sound like it's resonating at every frequency.

Why is this piece shattering into pieces?

I do not want this to happen again so i will be either epoxying this piece to itself or running tape around it.

The piece is real flimsy(fragile).
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Old 03-16-2013, 08:55 PM
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Quote:
Originally Posted by shizzzon View Post
Ok, so i got some recones for these FT1s and before i find time to do this, i want to show you guys something so you can help me with something.

The FT1s i'm reconing both did the following and I need to know why-

This picture here of the recone-


That entire metallic housing gets destroyed inside the heatsink and just shreds into pieces. When it does that, it causes the tweeter to sound like it's resonating at every frequency.

Why is this piece shattering into pieces?

I do not want this to happen again so i will be either epoxying this piece to itself or running tape around it.

The piece is real flimsy(fragile).
thats a thin piece of titanium, hell yeah its fragile, it has to be very light to be so sensitive. that is the "cone" or diaphragm of a bullet tweet.

if that is ripping are you sure you have them crossed over high enough, like 4-5khz, hopefully with -12 to -24dB slope. I can't see anything ripping it to shreds aside from either over-excursion or the amp is all sorts of wacked out. have you tried to turn the HPF on the tweeter up high, so it cannot reproduce so many frequencies at once, narrowing down if its the amp or tweet

do you have the 2-3 paper "washers" between phase plug and diaphragm, that might be an issue if they are not there also
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Old 03-16-2013, 08:59 PM
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I use a 3way memphix x-over, 16-x03 i believe is the model.

I will let you know tomorrow for sure but i believe i have it set between 3.5-4khz.
It uses an 18db slope.

The amp in use is cheap as hell but i have never been able to get more than 5v out of it so i figured realistically, the tweeters could handle whatever on this amp. They must be seeing an insane impedance curve because amp is rated for 100w x 2 @4ohm @1% THD. Class AB 60A fused.
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Old 03-16-2013, 09:01 PM
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Also, i have taken apart both tweeters and the only thing in them is the failed diaphragm. No paper washers.
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Old 03-16-2013, 09:18 PM
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Id start with bumping Xover another 1000hz

this is what was in mine, not sure if they still come this way tho
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Old 03-16-2013, 09:22 PM
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Hmm.. you know, those look familiar.. I may have those.

Where do they go when re-assembling and why do they exist?
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