Passive Xover without all speakears connected

[Hernan 10+ year member]

I was thinking on using a 3 way passive crossover from a component set to filter the tweetes only. This seems to be a very bad idea: //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

From http://www.bcae1.com/

"Using the crossover without having working speakers on ALL of the outputs will cause the crossover to act as a direct short at the crossover frequency of the missing speaker."

Complete:

* 12dB/Octave Passive Crossovers:

You may not know what a twelve dB per octave passive crossover is yet but it is explained in detail on the site. This section is a warning. If you have a 12dB/octave passive crossover (the type included with virtually every component set), and you blow a speaker (tweeter, midrange, midbass - it doesn't matter which), you MUST NOT play your system until the crossover is disconnected from the amplifier OR the blown speaker is replaced. If you continue to drive a signal into the crossover, there is a VERY good chance that the crossover and/or the amplifier will suffer catastrophic damage. This is NOT the crossover's fault. The problem is that a crucial component of the circuit is missing, causing the circuit to act completely differently. Using the crossover without having working speakers on ALL of the outputs will cause the crossover to act as a direct short at the crossover frequency of the missing speaker. People can't understand why a crossover melts down when it was perfectly fine when checked just after the tweeter failed.

Click to read more...

 

[UndercoverPunk 5,000+ posts]

never read that before... good to know. Thank god that hasn't come up before...

 

[Hernan 10+ year member]

Is there some way to use the passive for the tweeter only?

I want to build an active setup but I don't have the right passive for the mid-high 4" and the tweeter. //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[JimJ 5,000+ posts]

If you want to just filter the tweets, couldn't you simply put an electrolytic capacitor inline with the positive tweet lead?

Or is there something I'm missing - this seems a lot easier than you think //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif