Denon x3600 w/ Aragon 4004 amp

[Jlm86]

The addition of the air gun 4004 really pumped up the infinity kappa 8's..

But, I am having to go to 75+ on volume to achieve the big sound, surprisingly...

CCould it be the impedance setting on Denon AVR?
I've read where you always leave it at 8 ohms impedance no matter what..

Thoughts ?
Thank you

 

[staticV3]

The Denon's impedance setting shouldn't make a difference when using Pre out to an external Amp.

 

[Jlm86]

The Denon's impedance setting shouldn't make a difference when using Pre out to an external Amp.

Thank you for your quick reply

 

[MaxwellsEq]

This comes up quite a lot on ASR and other forums, so to reiterate in bold underlined: the position of the volume knob has no meaning. Why? :

• Volume controls are often "logarithmic" potentiometers which means their resistance doesn't come down by a fixed resistance with every degree of rotation but has small variation at the start and large variation at the end. As you rotate clockwise going a further 5 degrees beyond "midnight" has a bigger effect than going 5 degrees beyond "9PM"
• How much you need to turn the volume control depends on how much voltage the preamplifier sections sends out at max - if it's a not a lot (e.g. 1v), you may need to turn further, if it's a lot (e.g. 10V) you may not be able to turn the volume control much above "9PM"
• How much you need to turn the volume control depends on how much voltage the power amplifier section needs to see to be at max. If it needs a lot (e.g. 12V) to get to max volume, you may need to turn the volume control past "3AM". if it needs a little (e.g. 0.5V) you may not be able to turn the volume control much above "8PM".
• How much you need to turn the volume control depends on the gain of the power amplifier section. If it has not much gain (e.g. 10dB), you may need to turn the volume control past "2AM". If it has a lot of gain (e.g. 40dB) you may not be able to turn the volume control much above "10PM"

 

[Jlm86]

This comes up quite a lot on ASR and other forums, so to reiterate in bold underlined: the position of the volume knob has no meaning. Why? :

• Volume controls are often "logarithmic" potentiometers which means their resistance doesn't come down by a fixed resistance with every degree of rotation but has small variation at the start and large variation at the end. As you rotate clockwise going a further 5 degrees beyond "midnight" has a bigger effect than going 5 degrees beyond "9PM"
• How much you need to turn the volume control depends on how much voltage the preamplifier sections sends out at max - if it's a not a lot (e.g. 1v), you may need to turn further, if it's a lot (e.g. 10V) you may not be able to turn the volume control much above "9PM"
• How much you need to turn the volume control depends on how much voltage the power amplifier section needs to see to be at max. If it needs a lot (e.g. 12V) to get to max volume, you may need to turn the volume control past "3AM". if it needs a little (e.g. 0.5V) you may not be able to turn the volume control much above "8PM".
• How much you need to turn the volume control depends on the gain of the power amplifier section. If it has not much gain (e.g. 10dB), you may need to turn the volume control past "2AM". If it has a lot of gain (e.g. 40dB) you may not be able to turn the volume control much above "10PM"

Thank you awesome information and detail...
I guess the other question is why did they even put it there The impedance change switch?

 

[staticV3]

Thank you awesome information and detail...
I guess the other question is why did they even put it there The impedance change switch?

I think it was due to some safety regulations on case temperatures.

Low impedance speakers typically draw more current which leads to higher heat sink temperatures.

To compensate, manufacturers put in impedance selectors which limit the output depending on the selected impedance.