[BrandonB]

Two blown tweeters on my NX-Otica's from watching the Movie F! with Brad Pitt.  Would I do it again?  Heck yeah I would!!!!  If I hadn't had made these speakers and would have gotten them from a store it might not be as easy as hopping online and ordering a couple of tweeters.

[nlitworld]

I know it's not funny, but it's kinda funny. Been there before.  But like you said, easy fix in the end.

[Huskerbryce]

How loud was it?  I have had my NX oticas pretty damn loud and have not had an issue yet.  What amplification are you using?  Better check your crossovers.  Resistors may have burnt open or been damaged.

[toocool4]

You must have been going some to melt the voice coils, anyway I guess it happens. I have never melted a voice coil, but I have damaged a tweeter on my Totem Model One’s years ago for other reasons like physically denting them in ouch.
I did watch F1 a few weeks ago at home.

Well, just put in an order for a new pair of matched tweeters.

[Tyson]

Fixing a retail speaker would take longer and probably be more expensive.  And having to deal with the manufacturer, some of them can be flaky.

[BrandonB]

How loud was it?  I have had my NX oticas pretty damn loud and have not had an issue yet.  What amplification are you using?  Better check your crossovers.  Resistors may have burnt open or been damaged.

It was ear screeching.  How do I check the resistors?  My amplifier is an SMC Audio DNA.5 its about 100 WATTS per channel in 8 ohms.

[BrandonB]

You must have been going some to melt the voice coils, anyway I guess it happens. I have never melted a voice coil, but I have damaged a tweeter on my Totem Model One’s years ago for other reasons like physically denting them in ouch.
I did watch F1 a few weeks ago at home.

Well, just put in an order for a new pair of matched tweeters.

I put the order in this morning. 

[Huskerbryce]

A basic multi meter can be of some help.  You can likely visually inspect the crossover for signs of thermal strain.   In the past I had some resistors melt.  Brown or discoloration of the shell is tell tale.  If you use a multi meter you can isolate and check the resistance of each component.  Usually visual signs can tell the story.  The manner in which you blew a tweeter can vary.  Usually for my older speakers the mid blows first because of the higher demand.  Tweeters are capped off.   If the resistor heats up, it can significantly change the value and allow the tweeter to see loads that can be failure inducing.  Sorry about your loss.  Usually higher volume demands higher quality amps to control the drivers at higher wattage demands.  Good news is that quality tweeters can be replaced relatively cheap.  Bad news is that likely, if you blew both tweeters, you need to check crossover parts for probable damage.

[Danny Richie]

It was ear screeching.  How do I check the resistors?  My amplifier is an SMC Audio DNA.5 its about 100 WATTS per channel in 8 ohms.

If you are going to play them that loud then you need more power than that 100 watt amp. If it can produce 100 watt peak and have any headroom then you are only using 40 or 50 watts continuous. You are running out or juice and clipping your amp.

They are probably fine, but check the resistors with an ohm meter.

[BrandonB]

If you are going to play them that loud then you need more power than that 100 watt amp. If it can produce 100 watt peak and have any headroom then you are only using 40 or 50 watts continuous. You are running out or juice and clipping your amp.

They are probably fine, but check the resistors with an ohm meter.

Danny can you tell me what is considered a lot of power for the NX-Otticas?  I can send my amplifier into SMC Audio and they can build me a pair of monoblocks.  The monblocks are rated over 400 watts per channel.  I know this should be plenty of power but curious what is considered plenty of power for these speakers and if it will make them sound even better.  Are the NX-Ottica's since they are open baffle any different than speakers like the Bully in their ability to handle power?

[Huskerbryce]

Any speaker needs serious amplifier power to play really loud.  If you start with a 90db sensitive speaker a 1 watt input will give 90db at 1 meter.  To get a 3db increase in speaker output you have to double the amplifier wattage.  So 2 watts gives 93db.  If you do the math:
Amplifier power        Speaker output
 4watts                          96db
 8watts                          99db
 16watts                       102db
 32 watts                      105db
 64watts                       108db
 128watts                     111db
 256watts                     114db
 512watts                     117db
 1024watts                   120db
 2048watts                   Deaf and bleeding

[nlitworld]

2048watts                   Deaf and bleeding

And yet still not as loud as Motorhead played on a constant basis. 

[Danny Richie]

Danny can you tell me what is considered a lot of power for the NX-Otticas?  I can send my amplifier into SMC Audio and they can build me a pair of monoblocks.  The monblocks are rated over 400 watts per channel.  I know this should be plenty of power but curious what is considered plenty of power for these speakers and if it will make them sound even better.  Are the NX-Ottica's since they are open baffle any different than speakers like the Bully in their ability to handle power?

It isn't really that you need power. You need headroom. You still may only listen with just a few watts of power and and maybe you crank it up to 30 or 40 watts of power sometimes. That is still really loud. If you have a 50 watt amp or even a 100 watt amp, you can run out of headroom and the amp will clip and distort on high peaks. Having a 200 watt or 400 watt rated amp will just insure that the amp doesn't clip. If you push big amps like that into the 100 plus watt power range continuously (with those high sensitivity speakers) then your ears are going to bleed.