Hello,
New to this ....
I would like to build a sub amp module to run off 240v
I need it to be RMS 800w @ 8ohm
I joined this thing thinking there would be many people with much more experience in this area able to help
Any information you guys could provide (links or info) would be very much appreciated
New to this ....
I would like to build a sub amp module to run off 240v
I need it to be RMS 800w @ 8ohm
I joined this thing thinking there would be many people with much more experience in this area able to help
Any information you guys could provide (links or info) would be very much appreciated
ClassD is much more demanding of design skills than not/non switching amplifiers.
Simply asking the question makes me wonder of you have any of the skills that will be needed.
Simply asking the question makes me wonder of you have any of the skills that will be needed.
800W into 8ohms requires ~113Vpk into your load.
Expect the PSU to be around +-120Vdc to +-130Vdc
The peak current output is likely to be around 40Apk to 45Apk
Expect the PSU to be around +-120Vdc to +-130Vdc
The peak current output is likely to be around 40Apk to 45Apk
I probably don't have the necessary skill set to accomplish what I want just yet but I would like to learn about it .... And eventually be able to do it...
I don't even know what the abbreviation "PSU" means! ... Power supply unit?
What I would like to do is replicate a digitech AA0509 but with bit of a boost
As one mine has shat itself ...
Even some book titles that I should read about the basics would be helpful
I don't even know what the abbreviation "PSU" means! ... Power supply unit?
What I would like to do is replicate a digitech AA0509 but with bit of a boost
As one mine has shat itself ...
Even some book titles that I should read about the basics would be helpful
I would recommend just buying in a class d module.
Class d is fussy about supply voltages and noise.
Decoupling and good pcb layout are vital.
On the other hand IR have a few applications including pcb layout that you can take and make yourself.
I insisted on doing my own pcb layout and it took 3 revisions to get one that didn't go into protect mode at high powers.
Class d is fussy about supply voltages and noise.
Decoupling and good pcb layout are vital.
On the other hand IR have a few applications including pcb layout that you can take and make yourself.
I insisted on doing my own pcb layout and it took 3 revisions to get one that didn't go into protect mode at high powers.
Thank for all info and suggestions....
I think I will try to repair it ....
It is going into stand by/protect mode as soon as I turn it on ...
It just started doing this with no obvious reason ... It was just turned on but I wasn't playing any music ... It may have happened because I left it on over night?
... If I pull it apart myself what should I be looking for?
I think I will try to repair it ....
It is going into stand by/protect mode as soon as I turn it on ...
It just started doing this with no obvious reason ... It was just turned on but I wasn't playing any music ... It may have happened because I left it on over night?
... If I pull it apart myself what should I be looking for?
learn some safety first, there are lethal voltages in that amp. there are several threads an most any subject . the "search" button is in the upper right corner of every page. there are many project amp threads, start simple and work your way up honing your diagnostic and soldering skills as you go.
Seasons Greetings,
Elwood
Seasons Greetings,
Elwood
Keeping in mind that you should fully discharge the power supply even after the unit is unplugged it will hold lethal voltages. It is not safe for a novice to do. If you know a qualified electrician or tech, have them help you to:
check for bulging or leaky electrolytic capacitors
check power MOSFETS
check for bulging or leaky electrolytic capacitors
check power MOSFETS
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