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"Old Fart at Play" wrote in message
...
Trevor Wilson wrote:


**Here is an impedance curve of a '4 Ohm' rated loudspeaker:

www.rageaudio.com.au/kappa9.jpg


Do the math.


From the impedance curve that's not a 'difficult load'
but rather a serious design fault.

**Perhaps. It was not only a very popular model, here and in the US, but is
far from an isolated example. It is the Infinity Kappa 9.


Got any more details? I could do with a good laugh!

**You wanted a reason why amplifiers should need to have a seriously capable
power supply. The above example is one of those reasons.


--
Trevor Wilson
www.rageaudio.com.au

Slam
 

Trevor Wilson wrote:

"Old Fart at Play" wrote in message
...

Trevor Wilson wrote:



**Here is an impedance curve of a '4 Ohm' rated loudspeaker:

www.rageaudio.com.au/kappa9.jpg


Do the math.


From the impedance curve that's not a 'difficult load'
but rather a serious design fault.


**Perhaps. It was not only a very popular model, here and in the US, but is
far from an isolated example. It is the Infinity Kappa 9.


Got any more details? I could do with a good laugh!


**You wanted a reason why amplifiers should need to have a seriously capable
power supply. The above example is one of those reasons.


Weasel words from Wormtongue Wilson.

You picked a 4 ohm speaker with twin 2 ohm woofers in series.
Then you switched them to a parallel configuration, so the impedance
curve you showed was for a nominally 1 ohm speaker.

Still, you did give me a good laugh!

Roger.

Slam
 

Trevor Wilson wrote:

"Old Fart at Play" wrote in message
...

Trevor Wilson wrote:



**Here is an impedance curve of a '4 Ohm' rated loudspeaker:

www.rageaudio.com.au/kappa9.jpg


Do the math.


From the impedance curve that's not a 'difficult load'
but rather a serious design fault.


**Perhaps. It was not only a very popular model, here and in the US, but is
far from an isolated example. It is the Infinity Kappa 9.


Got any more details? I could do with a good laugh!


**You wanted a reason why amplifiers should need to have a seriously capable
power supply. The above example is one of those reasons.


Weasel words from Wormtongue Wilson.

You picked a 4 ohm speaker with twin 2 ohm woofers in series.
Then you switched them to a parallel configuration, so the impedance
curve you showed was for a nominally 1 ohm speaker.

Still, you did give me a good laugh!

Roger.

Slam
 

"Old Fart at Play" wrote in message
...
Trevor Wilson wrote:

"Old Fart at Play" wrote in message
...

Trevor Wilson wrote:



**Here is an impedance curve of a '4 Ohm' rated loudspeaker:

www.rageaudio.com.au/kappa9.jpg


Do the math.


From the impedance curve that's not a 'difficult load'
but rather a serious design fault.


**Perhaps. It was not only a very popular model, here and in the US, but
is
far from an isolated example. It is the Infinity Kappa 9.


Got any more details? I could do with a good laugh!


**You wanted a reason why amplifiers should need to have a seriously
capable
power supply. The above example is one of those reasons.


Weasel words from Wormtongue Wilson.

**I beg your pardon?


You picked a 4 ohm speaker with twin 2 ohm woofers in series.
Then you switched them to a parallel configuration, so the impedance
curve you showed was for a nominally 1 ohm speaker.

**No. I MEASURED the impedance of a popular, commerically available
loudspeaker. Whilst it is a particularly good (bad) example which
demonstates that the stated impedance of a speaker is not necessarily
related to real life. Although I have others on record, this one is arguably
the worst.



Still, you did give me a good laugh!

**You asked why an amplifier might require prodigious current ability. I
answered you question.

If you don't like the answers, don't ask the questions.


--
Trevor Wilson
www.rageaudio.com.au

Slam
 

"Old Fart at Play" wrote in message
...
Trevor Wilson wrote:

"Old Fart at Play" wrote in message
...

Trevor Wilson wrote:



**Here is an impedance curve of a '4 Ohm' rated loudspeaker:

www.rageaudio.com.au/kappa9.jpg


Do the math.


From the impedance curve that's not a 'difficult load'
but rather a serious design fault.


**Perhaps. It was not only a very popular model, here and in the US, but
is
far from an isolated example. It is the Infinity Kappa 9.


Got any more details? I could do with a good laugh!


**You wanted a reason why amplifiers should need to have a seriously
capable
power supply. The above example is one of those reasons.


Weasel words from Wormtongue Wilson.

**I beg your pardon?


You picked a 4 ohm speaker with twin 2 ohm woofers in series.
Then you switched them to a parallel configuration, so the impedance
curve you showed was for a nominally 1 ohm speaker.

**No. I MEASURED the impedance of a popular, commerically available
loudspeaker. Whilst it is a particularly good (bad) example which
demonstates that the stated impedance of a speaker is not necessarily
related to real life. Although I have others on record, this one is arguably
the worst.



Still, you did give me a good laugh!

**You asked why an amplifier might require prodigious current ability. I
answered you question.

If you don't like the answers, don't ask the questions.


--
Trevor Wilson
www.rageaudio.com.au