View Full Version : help with supertweeters lol
pimpedout97x
02-21-2007, 02:26 PM
no flaming please. im just looking for some information. ive seen some other people using these eminence apt80 supertweets, and they wire (in the positive wire) a little "cap" thing...looks something like this: http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=027-406
it so if its gonna blow, that little cap thing blows 1st and disables the tweeter. i guess its sorta like a fuse type thing?
again please dont flame, im just looking for what i need to get. tweets are Eminence APT 80
mrray13
02-21-2007, 02:38 PM
usually caps are put into place to act as a crossover. a resistor can be used to attenuate the output. but i've not heard of using a capacitor as a protection circuit.
can you get a link or picture of the actual capacitor used? our electronic guy has never heard of such a thing. he made a suggestion concerning just running a fuse inline with each tweeter. basicly put, start small, like 2.5 amp, crank your stereo. if it pops before full volume, try a larger fuse. stop when you get to the pointof being able to crank the system where you want it and don't blow a fuse. that way if there is a spike above that, pop goes the fuse and your tweeters are safe.
wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :peace:
Gary S
02-21-2007, 02:55 PM
no flaming please. im just looking for some information. ive seen some other people using these eminence apt80 supertweets, and they wire (in the positive wire) a little "cap" thing...looks something like this: http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=027-406
it so if its gonna blow, that little cap thing blows 1st and disables the tweeter. i guess its sorta like a fuse type thing?
again please dont flame, im just looking for what i need to get. tweets are Eminence APT 80
- A single cap on a tweeter is a basic 6bd per octave crossover, or high-pass filter.
You would have to research or ask the manufacturer what value you need... they are rated in Micro farads (uf)
They are not really a tweeter protector... it's just that since the cap limits low frequencies, the tweeter sees less power/ less low frequencies. The cap you gave a link to might not blow before the tweeter... those are better quality, possibly higher voltage. The cheaper caps are liable to blow first.
Cheap caps:
http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=72
The caps you use for crossovers must be non-polarized or otherwise listed for crossover use.
When they go, they explode like a firecracker.
Piezo tweeters have a built in mechanical roll-off and oftentimes don't need caps... but a cap can tailor the response and allow it to handle some more power... it's not unusual to see a cap on a piezo.
Those things are made to go with arrays of highly efficient pro mids for far-field use.... they are usually around 100db or more sensitivity at one watt... they are wayyyyyyyyyyyy too loud to be matched with just a pair of car midranges. You'd need a door full just to keep up with the tweeter. Plus, I believe they have higher distortion. Nasty! LOL!
LoudCrownVic
02-21-2007, 03:03 PM
Theres the thermal protection fuses that disconnect when they get to a certian temp and then close back up when they cool off... Saw them in the dayton catalog while on the shitter this morning.
pimpedout97x
02-21-2007, 03:16 PM
haha
ill go by and ask the guy that has 20 of these tweets in his truck, hes the one that told me about them
they are wayyyyyyyyyyyy too loud to be matched with just a pair of car midranges. You'd need a door full just to keep up with the tweeter. Plus, I believe they have higher distortion. Nasty! LOL!
Nothing we haven't told him a bunch of times...I'm just waiting to read the "It's too loud" thread :)
pimpedout97x
02-21-2007, 05:24 PM
oh you wont hear that from me. like ive said ive heard setups with far more pro audio speakers than ill have and i loved it :)
i got my 2 selenium compression horns for the cargo area...now those *****es are loud!
pimpedout97x
02-21-2007, 05:25 PM
Those things are made to go with arrays of highly efficient pro mids for far-field use.... they are usually around 100db or more sensitivity at one watt... they are wayyyyyyyyyyyy too loud to be matched with just a pair of car midranges. You'd need a door full just to keep up with the tweeter. Plus, I believe they have higher distortion. Nasty! LOL!
lol where have you been, check out my sig, i have 16 mids
///M5
02-21-2007, 05:50 PM
What you are asking for are these:
http://www.partsexpress.com/pe/pshowdetl.cfm?&Partnumber=071-254&CFID=7052618&CFTOKEN=26103480
They also have circuit breakers but they have a 5 second cycle before triggering.
///M5
02-21-2007, 05:50 PM
If you manage to blow those you are not only deaf but...