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Author Topic: Overtone rackmount PREAMP?????  (Read 18096 times)
yosemitespam
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« Reply #15 on: January 18, 2010, 05:42:15 PM »


Look at the schematics. The power section has few significant differences from what fender or marshall has done.

So kindly tell me Mr Z, where does the "Class D" enter the equation? Supposedly Class D means some kind  of pulse width modulation (PWM) in a feedback loop, correct? Are Nik's Overtones and real Dumbles truly Class D, or just "Class D like"?

PS: VooDoo Labs makes a nice rackmount tube preamp. I wish Nik would make something along those lines.
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erwin_ve
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« Reply #16 on: January 19, 2010, 08:28:59 AM »


Look at the schematics. The power section has few significant differences from what fender or marshall has done.

So kindly tell me Mr Z, where does the "Class D" enter the equation? Supposedly Class D means some kind  of pulse width modulation (PWM) in a feedback loop, correct? Are Nik's Overtones and real Dumbles truly Class D, or just "Class D like"?

PS: VooDoo Labs makes a nice rackmount tube preamp. I wish Nik would make something along those lines.
OTS and all it's variations have nothing to do with class d.
« Last Edit: January 19, 2010, 08:31:27 AM by erwin_ve » Logged
bluesfendermanblues
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« Reply #17 on: January 19, 2010, 08:52:13 AM »


Look at the schematics. The power section has few significant differences from what fender or marshall has done.

So kindly tell me Mr Z, where does the "Class D" enter the equation? Supposedly Class D means some kind  of pulse width modulation (PWM) in a feedback loop, correct? Are Nik's Overtones and real Dumbles truly Class D, or just "Class D like"?

PS: VooDoo Labs makes a nice rackmount tube preamp. I wish Nik would make something along those lines.
OTS and all it's variations have nothing to do with class d.
Exactly, Class D are digital amps.
So yosemitespam , lower your guns and go back to school ;-) You gunslinger, You.
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Respect for the big guy's work....we're at this part of the forum because of HAD's amps.
yosemitespam
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« Reply #18 on: January 20, 2010, 01:37:43 AM »


Look at the schematics. The power section has few significant differences from what fender or marshall has done.

So kindly tell me Mr Z, where does the "Class D" enter the equation? Supposedly Class D means some kind  of pulse width modulation (PWM) in a feedback loop, correct? Are Nik's Overtones and real Dumbles truly Class D, or just "Class D like"?

Not really. Nothing in the Class D definition states analog or digital. PWM can be used to modify an analog signal.

PS: VooDoo Labs makes a nice rackmount tube preamp. I wish Nik would make something along those lines.
OTS and all it's variations have nothing to do with class d.
Exactly, Class D are digital amps.
So yosemitespam , lower your guns and go back to school ;-) You gunslinger, You.
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yosemitespam
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« Reply #19 on: January 20, 2010, 01:40:05 AM »

 
OTS and all it's variations have nothing to do with class d.

Tell me kind sir, what is the origin of the misnomer? Is it some kind of H.A.D. insider joke?
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erwin_ve
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« Reply #20 on: January 20, 2010, 07:46:53 AM »


OTS and all it's variations have nothing to do with class d.

Tell me kind sir, what is the origin of the misnomer? Is it some kind of H.A.D. insider joke?
It's called D-style amp;abbreviation of Dumble style amp. Nothing to do with class D.
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hywelg
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« Reply #21 on: January 20, 2010, 09:09:48 AM »


Tell me kind sir, what is the origin of the misnomer? Is it some kind of H.A.D. insider joke?

It was your post that first mentioned Class D


I agree, although "speaker emulation" might have some bearing on tone.

I know many people on the Gear Page think as I. A Class D style tube preamp would be the greatest invention since the bread slicer.
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yosemitespam
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« Reply #22 on: January 21, 2010, 12:09:42 AM »


OTS and all it's variations have nothing to do with class d.

Tell me kind sir, what is the origin of the misnomer? Is it some kind of H.A.D. insider joke?
It's called D-style amp;abbreviation of Dumble style amp. Nothing to do with class D.

Got ya!

Usually Class D implies  a switching amp, like these  500 watt babies that weight 5 pounds. Incredible they can do that.



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