Amp for Manger drivers

[Tenson]

Hi Robert,

I expect your amps would work well in this application but unfortunately my budget is beginning to run low so they are just a bit too pricey.

I think your digital crossover would have been good as well if it had a digital input. As it is, I have had to modify the DCX2496 for better sound. What I am not sure of at this point is how I will switch between digital or analogue input as I don’t want all the controls on display. Anybody got some ideas?

[john curl]

Tenson, wider bandwidth is good, unless the amp is operating open loop. I doubt that you are considering that in this case.

[bear]

Originally posted by Tenson
[B]Hi Bear, I'm not too sure about that. A high bandwidth surely wouldn't add more treble, just go higher.

I have THD measurments of the Manger but only up to 10Khz.

Tenson,

Thanks for posting...

What are we looking at there??

Is the yellow 2nd harmonic and the purple 3rd?? or???

Either way, they're between 30-40dB down max, and rising back at HF apparently...?

What power level?
Do you have the same test, same conditions, at say 1 watt and again at something like 3dB down from max??

_-_-bear

[mikelm]

Originally posted by john curl
Tenson, wider bandwidth is good, unless the amp is operating open loop. I doubt that you are considering that in this case.

Hi John n all,

I just read through this thread - I am thinking that my next speaker upgade will be to Mangers ( I current have JX92s covering the whole spectrum - )

My question is this - How high does bandwidth need to be, with feedback amps, before increasing it reaps no further benefit ?

I have a TVC in front of my amp so my bandwidth is limited to 100khz but I get the impression that the power amp being able to go higher than this will still be good because of feedback related issues

So what is an ideal -3db closed loop frequency response upper limit ?

1meg, 2meg, 5meg, 10meg ! ? !

some designs I have been playing around with in spice even exceed 10meg ( by quite a bit ) I'm not sure what to think about this ( apparently ) extreme internal bandwidth. ( But I seem to recall that I have read Jocko saying that 8 meg hz was desirable if one could achieve it )

what's the story on this ? - current perceived wisdom etc

mike