Different speakers on both channels, will this damage T-amp.

[Sampi06]

Hi all!

In my new project I would like to use all different sizes of speakers to get a "messy" but impressive look on a Boombox.

Now I wonder if it would be harmful for my AMP6 if the speakers are not exactly the same.. I would make both sides the same impedance ..

And can I put as many speakers connected both parallel and in series as I want, as long as the impedance is in the AMP6's range?

Thanks in advance!
Sam

 

[Mooly]

As long as the loading is OK there is no issue.

Just remember that impedance is not the same as resistance, and that quoted nominal impedance of a speaker often has little relationship to the minimum impedance dips a speaker will present.

 

[Sampi06]

Thanks Mooly for the fast reply!

But what do you mean exactly with "as long as the loading is OK"?

I don't really know what loading is in speaker terms (I'm from Belgium, my english ain't that good)

Thanks

 

[Sampi06]

Ok I just figured that loading is the impedance of the speakers.

So is it not a problem when the nominal impedance is the same on both channels or does the resistance of the speakers have to be the same?
Thanks

 

[Mooly]

What I meant was that the "impedance" of a speaker is a variable depending on the applied frequency. A manufacturer may say the speaker is 8 ohms nominal impedance but in fact it varies from perhaps 3 ohms to 30 ohms over the 20 to 20kHz range. Its a very complex part of electronics.

This shows some graphs and explains speaker impedance,
Loudspeaker Impedance

A real problem with Class D chip amps like these is the sometimes fragile nature of the output stage. So you really want speakers that are an easy load... and therin lies the problem because the simple 8 ohm or 6 ohm rating doesn't reveal as much as you would hope.

 

[Sampi06]

Thanks for the help. The article made it clear to me now.

Thanks
Sam

 

[sreten]

Hi,

Lots of different drivers might look impressive but very likely
will sound a complete mess with all sorts of issues depending
on the drivers that you are wiring up together.

rgds, sreten.

 

[Sampi06]

I'll keep that in mind. After reading the article in Mooly's post I've rearranged my driver setup to avoid connecting speakers in series.. this way it won't to much of a difference.. Only the woofers will be different now..