Hello From Ireland

[aoluain]

Hi All,

Just after joining and liking the quick browse I had.

I have currently 1 seperates system and building another.

I am looking at an inexpensive set of speakers that have
2 impedance ratings as follows. and have powered woofers.

Front speakers
High Frequency
8 ohm

Speakers
Low Frequency
6 ohm

Would these suit my 8ohm amp?

Thanks in advance

A

 

[JOHN FICKEL]

Yes, The rated nominal impedance, on the back of the speaker, is usually the lowest point at which a speaker will go. All good receivers will play down to 4 ohms easily. If your receiver has an impedance switch, this website will tell you to leave it set to the 8 ohms setting. Always, and just make sure your receiver or amplifier has plenty of ventilation

 

[JOHN FICKEL]

What are the speakers?

 

[j_garcia]

sláinte

"Good" receivers would refer to the higher end models, but very FEW typical receivers will play down to 4 Ohms properly. 6 ohms is rarely an issue for most receivers, but the sensitivity of the speakers and how loud you listen are factors.

 

[JOHN FICKEL]

What is the amp model you are using ? And manufacture

 

[mtrycrafts]

Hi All,

Just after joining and liking the quick browse I had.

I have currently 1 seperates system and building another.

I am looking at an inexpensive set of speakers that have
2 impedance ratings as follows. and have powered woofers.

Front speakers
High Frequency
8 ohm

Speakers
Low Frequency
6 ohm

Would these suit my 8ohm amp?

Thanks in advance

A

Welcome to AH.

Not sure I totally understand your question. Usually a speaker, 2 way, 3 way, etc has one impedance rating; the drivers are not rated independently. Or, are you after individual drivers.

 

[markw]

Yes, The rated nominal impedance, on the back of the speaker, is usually the lowest point at which a speaker will go.

This s not so. That sated number is a "nominal", or average, impedance. Speakers can go significantly lower, particularly in the bass region.

 

[JOHN FICKEL]

This s not so. That sated number is a "nominal", or average, impedance. Speakers can go significantly lower, particularly in the bass region.

OK thank you for clearing that up.

 

[JOHN FICKEL]

So when somebody looks at the nominal impedance rating on the back of the speaker, that means absolutely nothing!

 

[JOHN FICKEL]

So no one should really be concerned about the nominal impedance of the speaker at all. What you should be more concerned Of is how low your amplifier can go. Basically making sure your amplifier/receiver can handle all sorts of different impedances .. everyone knows that impedance constantly changes with frequency.

 

[JOHN FICKEL]

I've never seen so many people concerned about impedance. I've always had Yamaha receivers, ran all sorts of crap on them and nothing ever failed. I have even ran four Cerwin-Vega's in parallel, creating a 2 ohm load on each side. Even on Yamaha's cheapest receivers

 

[JOHN FICKEL]

Hi All,

Just after joining and liking the quick browse I had.

I have currently 1 seperates system and building another.

I am looking at an inexpensive set of speakers that have
2 impedance ratings as follows. and have powered woofers.

Front speakers
High Frequency
8 ohm

Speakers
Low Frequency
6 ohm

Would these suit my 8ohm amp?

Thanks in advance

A

Let us know what speakers that you're looking at,model numbers and manufacture.. also let us know what receiver/amplifier that you have, and model number as well

 

[markw]

I've never seen so many people concerned about impedance.

I assume I'm the "everyone" you're referring to? I'm concerned because what you said is totally incorrect and someone might get into trouble counting on it as the gospel truth.

It's great that you want to help but make sure the advice you provide is true. If not, expect to be called on it.

So when somebody looks at the nominal impedance rating on the back of the speaker, that means absolutely nothing!

http://www.audioholics.com/combo-))-ebooks/learn/speakers/speaker-impedance-rating/1092

 

[JOHN FICKEL]

I expect to. I don't want to be incorrect. If I made a mistake then I'm sorry

 

[JOHN FICKEL]

No I was not referring to you. Just in general outside of this fourm, I've had a lot of people worried about impedance

 

[TLS Guy]

So when somebody looks at the nominal impedance rating on the back of the speaker, that means absolutely nothing!

It means absolutely nothing!

You can take it that most decent speakers are 4 ohms these days. The reason being that to get effective BSC compensation you have to use higher impedance drivers than are generally to end up with 8 ohm impedance in the 100 to 500 Hz range. A good practical rule of thumb is to consider the effective impedance of a speaker to be the minimum impedance plus 10%.

Some manufacturers quote a minimum impedance, but most don't. You usually can only find an impedance curve if third party measurements are available.

Basically you should assume every speaker is four ohm unless you have evidence to the contrary.

Amps that blow up driving a four ohm load are not much use these days.

 

[PENG]

Gents, his speakers have powered woofers. He didn't provide enough info as such but based on what he did provide, as long as their sensitivities are not too low, say above 88 dB/M/2.83V I would say his 8ohm "amp" (note: he did not say AVR) is fine if his room is small to medium (THX standard) and he listen to average spl below reference level so I agree with post#4. We may also have to assume his "amp" is a well made class AB just to improve the odds.

 

[aoluain]

Hi all, apologies I was offline all day.
The amp I will be using is a SONY str-d590
The speakers I was looking at are AIWA sx-wnbl56.

 

[mtrycrafts]

Hi all, apologies I was offline all day.
The amp I will be using is a SONY str-d590
The speakers I was looking at are AIWA sx-wnbl56.

Just an info about pictures. Try to post much larger sized one. 38kb is nothing, cannot read it.

 

[JOHN FICKEL]

I found the manual on the web. It's rated from 40hz to 20000, Also it's only 60watts. The ratings are using 1khz ... It says 8ohm tho. It claims the surround amp is 4ohm tho. Again all ratings are using only 1khz