Home Theater Forum and Systems banner
1 - 2 of 2 Posts

·
Registered
Joined
·
246 Posts
How many speakers connected to each zone ?
Is it a Stereo speaker system ?
Do the ceiling speakers have Distribution transformers in them ?

In General . . .
you should not connect more than two 8 ohm speakers to the output of an amplifier, making a 4 ohm load.
3 speakers equals a 2.7 ohm load, and 4 speakers would make a 2 ohm load. As you can see it's getting close to a Short Circuit.
 

·
Registered
Joined
·
246 Posts
I am confused with the 5 speakers in one room and the subwoofer outputs. In the place where you feed this system the speaker signal, is it labeled or are you going to need to guess what the wires are for? How many pairs of wires feed the system? Sounds like it's Mono to me.

If the system was installed properly to use all those speakers, then it will have distribution transformers in them. Just unscrew the 4 screws that hold a speaker to the ceiling and let it down enough to look at the back of the driver. Does the Signal wire go directly to the speaker terminals, or do they go through a small transformer first.

If it goes through a transformer, then you will need a special amplifier (or impedance transformers on the amps output) made for audio distribution. The amp should have a 70v output that will feed your system.

Here is some more information about it . . .
What you want to learn about is a 70v Distributed Sound System which is also called a Constant Voltage System. This involves getting a bunch of Impedance Matching Transformers. A small transformer goes onto each individual speaker in the system. This will present the amp with a proper load on it's outputs and lets you use inexpensive volume controls in the rooms that you want to control.
http://www.ticcorp.com/25v_70v_100v_systems.htm
http://www.wescomponents.com/datasheets/100v_guide.htm
 
1 - 2 of 2 Posts
Top