Speaker impedance

[chipco3434]

I am absolutely new at this. I will be wiring my array project this evening amd tomorrow and I am looking for some recommendations.

The speakers are an array of sixteen Pioneer 4" and twenty-four Onkyo tweeters per speaker. They will/can be driven by a couple of Adcom amps ~ 300 W/C @ 8.

1. Should I wire in a weighted array, similar to the zalytron scheme as shown below.

2. Should I aim at any particular impedance value for the woofer and the tweeter arrays. Both 8 ohm, mid-bass 8 ohm, tweeters 6 ohm? Both 6 ohm? I have a hand full of decent sized 1 and 2 muf's for initial testing.

Thank you in advance for your advice.

[5th element]

There is no correct way to wire up the drivers, it depends on what your going to do with them, ie what load do you wanna present to the amplifier etc. Really atm thats all I can think of as a crossover can be designed around impedance.

[chipco3434]

The sound of music. I have one speaker completed and have listened to it for most of the morning while working on #2. I just have the tweeters caped off at 4 muf at the time being and it's running on the little Sony surround in the den. It's kickin'. I love it!

The weighted array thing was not very satisfying on the 24 tweeters. I resoldered them in a conventional parallel series to a nominal impedence of 6 (I'm guessing). (Left the Fluke at the office.) Vastly improved output levels & more balanced.

Den's a wreck... Wire, shrink, solder & cigarette butts. Soldering iron burned a hole in the throw rug. Careful room arrangement will place the burn hole under the table leg. last thing I need is to be the victim of domestic violence.

Back to #2! She who must be obeyed is back at six!

Peace/Out

[5th element]

Hmmmmmm WAF I certainly know that any holes accidentally burnt in the carpet here would NOT go dwn a treat at all.

oh and to get the resistance....

1/(1/R1+1/R2+1/R3.....1/Rnth) is for parallel

series is just add em up.

[sreten]

Will somebody please mention baffle step compensation ?

(use 8 units for this c/o at the bafffle step frequency)

And an L-pad for the tweeter array, to match the above ?

sreten.

[chipco3434]

No the burnt carpet thing is, thankfully, a throw rug.

Speaker #2 is done & tested. However, I must wait for the little mrs. to carry these bears into the living room.

Yes, I am now on the "crossover phase" of my little project. Correct me if I am wrong. I will have roughly equivalent dollars in caps & chokes vs. an active kit by the time these are sorted out? Is there a bit of freeware out there to calculate the optimum crossover frequencies relative to the speakers parameters & the baffle dimensions?

By the way, these things are sledgehammers.

Off to the store for provisions. Dinner will be served upon her arrival.

To all... thanks for the help!

[chipco3434]

5th, thanks for the equation. I'm down with Mr. Ohm and the very basic stuff like caps, coils & resistors.

sreten, the L-pad thing... lead 2 modifies the resistance?

Thanks