Class "D" amplifiers

[anotherfreak]

So, I plugged into a GB "Shuttle 9.2" today and was blown away at the power/weight and was wondering....

If I ran my line 6 POD through an AUX input, does the amp "color" the signal? I guess I would have to take the speaker cab into consideration, but how would this compare to a pa/speaker? A 410 with a horn is a pretty full-range speaker cab. It might make a good modeling rig too

just thinking that a bass head might just pull double duty and be a guitar rig as well. I should clarify, when I use the POD i am not trying to model the specific amplifier sounds, I am just looking for a "good" tone. So I can get a wide variety of different amp sounds, not really a specific amp sound, just a different character.

[killerteddybear]

I'd expect some coloration, but hey, it's worth a try.

[HAMERMAN]

Not sure about the Shuttle 9.2 but the power amp in a Shuttle 9.0 is a Bang & Olufsen ICEpower250ASX2 which is sold for general purpose use (not just for active subwoofers and bass amps):

http://www.icepower.bang-olufsen.com/en/solutions/speaker/ASX2_SERIES

[JohnnyB]

Not sure about the Shuttle 9.2 but the power amp in a Shuttle 9.0 is a Bang & Olufsen ICEpower250ASX2 which is sold for general purpose use (not just for active subwoofers and bass amps):

http://www.icepower.bang-olufsen.com/en/solutions/speaker/ASX2_SERIES

The ICE units form the basis for most of the class D amps in high end audio. They vary in sound and characteristics from brand to brand depending on implementation, but it speaks to the fundamental quality of the ICE unit as a baseline for quality class D amps. Class D amps completely rewrite the power-to-weight ratio of what we're accustomed to in power amps.

For example, Nuforce makes a 150 wpc stereo amp that is 8.5"w x 16"d x 2"h that weighs 9 lbs. It puts out 200 wpc into 4 ohms and has enormous peak headroom (288/576/1125 watts into 8/4/2 ohms for 20 ms). Such an amp in class AB would be 18"w x14"d x 6"h and weigh 40-50 lbs.

[anotherfreak]

where power is concerned I was SUPER impressed, back to back notes were very articulate and punchy. I'm gonna have to give it a try!

[Brooks]

i used a powerblock w/ my past modeling rigs (axe fx & vox tonelab), routed thru the FX return which bypassed the amps preamp, less coloring of the signal. go for it.

[gorch]

Switch off any colouring in your POD in the first step. Listen and try to tweak the sounds to your taste in the 2nd step.

Means to switch off any amp and cabinet settings in your configs and see/listen what your amp makes out of it.

[anotherfreak]

Cool!

I picked up an ampeg portaflex, gonna check out some bypassed sounds through it!