12v power fastest transient response solution

[falken1208]

I noticed when I recording electric guitar through audio interface. the result is heavily affected by power transient response. dont know why my ac mains are very slow and my waveform is not sharp. im now looking for offline fast transient response 12v power solution? do you have any idea?

 

[dick_freebird]

This description seems doubtful. AC mains
are pretty constant. (special events aside).
Power supply may want a stiffer output
filter if it's transient sag that is the problem.
But if it's just undersized for the amplifier
chain (?) at continuous high power, then
you need a better power supply.

Now why is "recording" needful of any
significant power anyhow? Pedal boxes
and stuff ought to not need a whole lot.

 

[FvM]

Not clear what "power transient response" means in the present context. Mains voltage at wall outlet has kA short circuit current, voltage doesn't drop significantly even if loaded with a big guitar power amplifier. A weak power supply, e.g. too small filter capacitor, can play a role.

 

[Easy peasy]

Your cheap Chinese plug box has a fault - and is about to go open ckt.

 

[SteveGrey]

For the fastest transient response in a 12V power supply, it’s essential to optimize filtering and use components like low ESR capacitors. Fast recovery diodes and adequate decoupling can also help reduce response time. For sensitive applications like audio, ensuring stable and clean power is crucial. You may need to balance the power supply design with specific components to achieve the desired performance.

 

[falken1208]

our power is distributed by community。 too many people share one 10kv to 220v transformer。 i suppose something like compensation system will be add on。so when it comes to my socket， the power quality is not usable for audio。 when i come to 12v dc clean power，it is not fast enough。 but i noticed a lot band record on their tour bus。is it to say 48v system transformed to 12v is faster than native 12v?

This description seems doubtful. AC mains
are pretty constant. (special events aside).
Power supply may want a stiffer output
filter if it's transient sag that is the problem.
But if it's just undersized for the amplifier
chain (?) at continuous high power, then
you need a better power supply.

Now why is "recording" needful of any
significant power anyhow? Pedal boxes
and stuff ought to not need a whole lot

 

[falken1208]

For the fastest transient response in a 12V power supply, it’s essential to optimize filtering and use components like low ESR capacitors. Fast recovery diodes and adequate decoupling can also help reduce response time. For sensitive applications like audio, ensuring stable and clean power is crucial. You may need to balance the power supply design with specific components to achieve the desired performance.

after a lot test，i know the noise is not a big problem now， i could eliminate it by supercaxxxxtor。the real problem now is the transient response。 the transient response of the power source is the transient response of audio。 i checked a lot professional di files， their waveforms are just steeper than mine。when i came to 12v battery it dont give me instant power。 but their is some Grammy winning studio using solar。 But how come?

 

[FvM]

Which guitar amplifier are you talking about?

 

[falken1208]

Which guitar amplifier are you talking about?

no guitar amps， guitar straight to audio interface， and amplified there

 

[FvM]

O.k., I don't see how mains power supply comes into play in this setup. Sounds like a big misunderstanding.

 

[falken1208]

O.k., I don't see how mains power supply comes into play in this setup. Sounds like a big misunderstanding.

i think guitar signal are small voltage analog signal，and hit the audio interface，amplified to line level。 it is heavily affected by main power even if it was transformed from 220v to 12v。 if my 220v is not instant， the audio waveform will look soft

 

[FvM]

Any preamp, mixer console, audio effect stage, whatsoever involved in the signal path uses regulated clean DC power supply and isn't affected by mains voltage variations or even causes a transient load to the mains.

You are apparently comparing audio components with different characteristic, either different input impedance presented to the guitar pick-up, different frequency characteristic or even nonlinear gain (guitar effect, e.g. tube amp emulation).

 

[falken1208]

i donot believe， different ac dc power source will change my waveform by my test。 switching from battery to ac side by side，my waveform is totally different and sound different。 every single note i play will cause voltage going up from 12v to 12.5， 12.8v。its not constant 12v。 i dont know why but i can see it shows on power monitor。and all those difference happens during power supply goes from 12v to 12.8v

Any preamp, mixer console, audio effect stage, whatsoever involved in the signal path uses regulated clean DC power supply and isn't affected by mains voltage variations or even causes a transient load to the mains.

You are apparently comparing audio components with different characteristic, either different input impedance presented to the guitar pick-up, different frequency characteristic or even nonlinear gain (guitar effect, e.g. tube amp emulation).

 

[betwixt]

Falken1208 can you draw or photograph how you have things wired together. Recording equipment should not draw different power according to tone or volume level and therefore should not have any effect on power supply. Are you perhaps feeding your guitar through a power amplifier and loudspeaker then recording into a microphone, that is the only scenario I can think of that will have varying power requirements. If that IS what you are doing, your recording quality and noise level will be far from optimal.

Brian.

 

[falken1208]

Guitar straight into hiz input of interface
There is noticeable voltage increase on psu
when I hit the strings. Psu are original from factory.

Falken1208 can you draw or photograph how you have things wired together. Recording equipment should not draw different power according to tone or volume level and therefore should not have any effect on power supply. Are you perhaps feeding your guitar through a power amplifier and loudspeaker then recording into a microphone, that is the only scenario I can think of that will have varying power requirements. If that IS what you are doing, your recording quality and noise level will be far from optimal.

Brian.

Guitar is not only an instrument.but a small generator in this system

 

[KlausST]

Hi,

I also think this is a big misunderstanding of what´s the root cause and what´s the symptom of a problem.

The description does not make sense in what I´ve learned and expereinced in decades of professional electronics design.
Maybe this is because of misleading terminology ... maybe something else.

To get a picture of your whole system .. I agree with Brian: we need a picture/sketch of your wiring. Pictures say more than a lot of words .. especially across language barriers.

Klaus

 

[falken1208]

Hi,

I also think this is a big misunderstanding of what´s the root cause and what´s the symptom of a problem.

The description does not make sense in what I´ve learned and expereinced in decades of professional electronics design.
Maybe this is because of misleading terminology ... maybe something else.

To get a picture of your whole system .. I agree with Brian: we need a picture/sketch of your wiring. Pictures say more than a lot of words .. especially across language barriers.

Klaus

electric guitar pickups-guitar cable-audio interface-macbook or pc. This is all I Know about my system. Lets make things easier. E guitar - audio interface with 12v psu- headphone. i could hear my tone is changing with ac/dc power source change. No wireless interference tested.

 

[betwixt]

Guitar is not only an instrument.but a small generator in this system

Yes I agree but the amount of power from a guitar pickup may be a thousandth of one Watt if you are lucky, that's why an amplifier is needed to boost it to usable level.
Whatever your problem is, you are looking in the wrong place. Something else is causing the problem.

Brian.

 

[barry]

i could hear my tone is changing with ac/dc power source change.

As others here have (repeatedly) said, this makes no sense. you’ve got either:

1) Defective power supplies
2) A grounding problem
3) A complete misunderstanding of what’s going on.

This is a very low power scenario; “power transient response” is meaningless.

 

[dick_freebird]

Are you sure that the high-Z input is what the guitar
should go to? Is this perhaps a low level input that
ends up distorting (thus sounding bad)?