home made 3 way passive crossover

Ok, I'm sure this has been gone over before, I read about 3 articles on various sites about this, so kinda have my head somewhat wrapped around it.  But could somebody please refer me to post on here or anywhere to actually see a system put to this?  I still have some questions, like.... it seems with a 2 channel amp, bridged, I could have 4 tweeters, 4 midranges and 2 subs?  With a 4 channel amp, add 2 more subs!!  Is this possible, or am I missing something?  And where can I basically..... sigh, hate to say it, but "steal" some one's simple already bought design and mess around with it?

gehlsurf wrote:

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Ah, ok, I didn't get that from my buddy, who used to build these.  He said he would use the channel of the amps for highs and mids, and then bridge the sub off of the same output, so basically, how I understood it, one sub for each pair of channels.  His subs were typically only 8's or at max 10's. 

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You're talking about a tri-mode setup.  This was fairly common in the 90's for low-budget installations, but is not a setup I recommend except when absoltely necessary.  Amps are just too cheap these days to set up a marginal system like that.  But if you must, look for a stereo amp that says it is "tri-mode capable" and make sure you are using 8-ohm or higher speakers all around.

Ok, that makes sense, it was in the 90's, Ok, cool, that's pretty much the answer I was looking for, because the tri mode thing kinda threw me off, and I suppose they would have to be fairly high ohms.  OK, thanks!!