24volts Dc for MXR micro amp clone

[LeroyP]

Hi All

I've built a mxr micro amp clone and i'm trying to get the most clean voltage gain from it. I've got access to a regulated DC plug pack that puts out 24 volts at 1 amp.
I'm using a TL071 as the IC and according to the Texas instruments data sheet it's maximum supply voltage is 36 volts http://www.ti.com/product/tl071
Aside from changing all of the caps to 50 volt caps it appears that this should work just fine. Am i missing something? It also appears that no further circuit mods should be required. The goal is to have the ability to slam the front end of my 18 watt clone with a large clean signal (No clipping) for my lead guitar runs.

Thanks
Leroy

[pappasmurfsharem]

I mean assuming all the parts could handle it I guess it would be ok...

Unless that would put to much AC on the front end of the amp but I don't know if that really happens at those levels

[LeroyP]

Thanks Papa

I've been building custom valve amps for more than a decade so i know what effect it'll have on the amp. All this IC Voodoo has me a little confused. The MXR pedal looks like a non inverting diff amp. I know that some amp manufacturers have been using inverting IC diff amps running at +/- 15 volts in their product lines (Marshall JCM900) so that's why i'm assuming that it (24 volts with the virtual earth, equivalent to +/- 12 volts) should be OK. 

Leroy

[Gus]

Thanks Papa

I've been building custom valve amps for more than a decade so i know what effect it'll have on the amp. All this IC Voodoo has me a little confused. The MXR pedal looks like a non inverting diff amp. I know that some amp manufacturers have been using inverting IC diff amps running at +/- 15 volts in their product lines (Marshall JCM900) so that's why i'm assuming that it (24 volts with the virtual earth, equivalent to +/- 12 volts) should be OK.  

Leroy

Hi All

I've built a mxr micro amp clone and i'm trying to get the most clean voltage gain from it. I've got access to a regulated DC plug pack that puts out 24 volts at 1 amp.
I'm using a TL071 as the IC and according to the Texas instruments data sheet it's maximum supply voltage is 36 volts http://www.ti.com/product/tl071
Aside from changing all of the caps to 50 volt caps it appears that this should work just fine. Am i missing something? It also appears that no further circuit mods should be required. The goal is to have the ability to slam the front end of my 18 watt clone with a large clean signal (No clipping) for my lead guitar runs.

Thanks
Leroy

You build amps and you asked this question?  

Look around the forum for "glass blower" for a different way to get a larger than power supply voltage output.

[LeroyP]

Hi Gus. What a friendly reply....If only we could all be internet geniuses like you.

Yes i do build amps, however they use valves and not transistors or IC's. Being proficient in one electronics field does not automatically make you proficient in all of them. 

I am very familiar with Merlin's work. The glass blower uses rail bootstrapping from a standard 9 volt source to achieve its objective.
As stated in my original thread I've already built the clone and i have access to a 24 dc source. Why would I build a complete new pedal?
I never asked for a pedal recommendation, i just wanted someone with some solid state experience to confirm my thinking.

Leroy

[slacker]

Providing all the components can handle the higher Voltage it will work fine. Not sure how much difference it will make in practice, a Micro amp can already slam an amp pretty hard, I don't know how much of the extra volume will be useful.

[Mark Hammer]

Here's the paradox: when high-amplitude signals are used to overdrive an amplifier's input stage the amp does not want too much treble in that input signal.  Indeed, higher headroom often means that less treble is lost.

In which case, I would strongly recommend some means for trimming the treble in your Micro-amp, when you use it for overdriving.  That could be as simple as a 3-way toggle to strap in one of two feedback caps in/with the op-amp.