70 Volt Speaker

How to for Self contained 70 volt speaker

I recent found a 250watt 70volt audio amplifier. This is a very usefull way to set up an audio system. In a 70 Volt distribution system, a transformer is added to each speaker. This allows you to connect a large number of speakers in parallel to the amplifier. The amplifier sends a higher voltage than a regular 4 or 8 ohm amplifier (up to 70 volts). By connecting the speaker transformers at different wattage levels, or by adding 70 volt attenuators, each speaker can
be set to the desired volume independent of the others. It allows you to connect alot of speakers spread over a large area, using only 1 pair of wires. giving you an evenly distributed sound.

What you will need:
1. Speaker- I used a 10 watt CB horn

2. 70 Volt audio transformer

3. Random cables

4. Amp (70 volt Distributed audio system)

5. RCA to audio jack

6. Nuts, bolts and washers

7. Plastic enclosure

The setup is very simple, all you need to do is connect your speaker to the tap you want to use, I used 10 watts to match the speaker I bought. That is the only connection on that side. You then connect 2 wires to the input side of the transformer, these will be the wires that tie in to the 70 volt terminals on your amplifier. This is the best setup for using alot of different speakers spread out over a large area. The loss of the system is very low so you can maintain the same sound quality though out the entire area. Putting together the setup can be alittle bit pricey but the system is definatly worth it. (it can be very cheap if your lucky and find the amp in the dumpster)
You can make as many of these as your setup requires as long as you dont excede the Max power output of your amplifier. They are fairly cheap to make, I would estimate about 17 dollars a piece, The sound they put out is loud and clear. The amplifier that i have can run 25, of these before it is maxed out, Which is more then enought to cover the entire haunt.

After you check all wiring And make sure your have them all soldered in place with no solder bridges. you are ready to test the system. Connect it to power and connect an audio source and enjoy.

Any questions or comments email: joshua14ss@hotmail.com

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