Would a 50 watt 4 ohm amplifier be enough to power a 50 watt 8 ohm rated PA horn?

Question

I am looking for a car amplifier to use with my 50 Watt RMS 8 ohm PA horn. All I am able to find are 50 W 4 ohm amps. Would it be a problem to get one of those? Do I have any other options? Thanks.

Answer 1

If your ohms are that far off it won't sound right.

Answer 2

Relax, Your idea should work fine.

I have built 2 different vehicles with PA systems in them and used car audio amps with pa speakers.

The PA speaker being 8 ohms is no different from using a single 8 ohm woofer.

At 8 ohms the 50 rms amplifier will put out 40 rms so not a concern as far as compatability.

Is the PA Speaker 50 watt Max or 50 Watt RMS???

If the PA speaker is about the size of a shoe box, it may be 50 wat max and 15-20 watt rms, that would be a problem.

The PA Speakers i have installed were 100 RMS and they were really big speakers, Like home theater sized.

Other than that, you will be fine.

Answer 3

I'm not sure how it would sound but i would get a 2 channel that is 100 watts RMS bridge @ 4 ohm and try it..... I'm just guessing.

EXAMPLE:

http://www.sonicelectronix.com/item_6597...

Answer 4

the problem is the pa horn isnt meant for a car , that is why the ohm rating is so far apart . in addition to it not sounding good like the other answer said , it will do damage to either the amp or the speaker . you need to use a house type amplifier , but then you may also need a power inverter since house equipment runs on ac and cars run on dc

Answer 5

It will be just all right...will not sound the way you think it will..