What ohm load is this?

[galacticmonkey 5,000+ posts]

I dont have my DMM, or else I wouldnt be posting. I have a 4ohm speaker on eac channel, then a single 8ohm speaker bridged on top of those. A friend told me to try it, so I did. I wasnt sure what ohm load it would be, so I went easy. Then after the amp was still staying cool, I cranked it up. After about 30 mins wide open, it didnt even feel like it was playing, so it might not be a low ohm load.

Heres a pic of the wiring. Anyone know what final ohm load the amp sees? Its not set to bridged, its set to stereo.

Click to read more...

 

[x1le 10+ year member]

I'm gonna guess each channel is seeing 6?

you should series wire the 2 same speakers then parallel the third one and run the amp bridged.

 

[BrownVanMan 10+ year member]

I'm gonna guess each channel is seeing 6?
you should series wire the 2 same speakers then parallel the third one and run the amp bridged.

this if your amp is 2 ohm stable bridged and i am sure its 6 each.

 

[ciaonzo 5,000+ posts]

2 ohm per channel.

 

[gtbike900 10+ year member]

2 Ohm Per Chanel On My Amp I Have 2 4 Ohm Speakers Per Chanel And 2 8 Ohm Speakers Bridghed = 1 Ohm Per Chanel On My Amp Sorry On My Spelling Im Shit Faced On My Phone

 

[galacticmonkey 5,000+ posts]

So far Ive heard 6ohm, 2ohm, and 1 ohm.

Any more answers?

 

[ciaonzo 5,000+ posts]

Only way the amplifier wouldn't be "seeing" a 2 ohm load per channel is if you have passive filter components in between the drivers.

 

[galacticmonkey 5,000+ posts]

Well the two 4ohm speakers is a Hertz comp set.

 

[ciaonzo 5,000+ posts]

I meant between the sub and the comps. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

It would be a rather large inductor on the sub and rather large capacitor on the comps, at a minimum.

 

[Scoobydoo 5,000+ posts]

bobs your uncle

 

[ciaonzo 5,000+ posts]

lol

 

[x1le 10+ year member]

So far Ive heard 6ohm, 2ohm, and 1 ohm.
Any more answers?

the only part that's confusing is you have the third speaker set up as if the amp was bridged.

 

[boogeyman 10+ year member]

It will depend on how you have the speakers crossed overed.It will be frequency dependant. Example:say you have a 4 ohm tweet playing 20,000 hz-3500 hz...a 4 ohm midrange playing 3500 hz - 100hz.....a 4 ohm sub playing 100 hz and below all wired parallel on the same channel that channel will see a 4 ohm load.

Now lets say you have a 4 ohm tweet playing 20,000 hz - 3500 hz......a 4 ohm midrange playing 5,000 hz - 100 hz.......... A sub playing 100 hz and below all wired parallel on the same channel that channel will see a 4 ohm load from 20,000 hz - 5000hz....a 2 ohm load from 5,000 hz - 3,500 hz....a 4 ohm load from 3,500 hz - 100 hz....and a 4 ohm load from 100 hz and below.

The reason in the 2nd example the frequencies between 5,000 hz and 3,500 hz is presenting a 2 ohm load to the amplifier is because Impedance is FREQUENCY dependant, there are two drivers reproducing frequencies between 5,000 hz and 3,500 hz.

 

[jeyventura 10+ year member]

each side is seeing 6 ohms

 

[boogeyman 10+ year member]

If the 4 ohm speakers in your diagram and the 8 ohm speaker in your diagram are NOT OVERLAPPING the 4 ohm speakers will present a 4 ohm load, and the 8 ohm speaker will present an 4 ohm load to each channel because it is bridged , giving you 2 4 ohm loads on each channel , wich in turn equals 2 ohm stereo.....so the amp is running 2 ohm stereo.