I am also curious about your findings.
I can get a mosfet power audio amplifier. A Ohio PLX 2500.
But is it also possible to use these types of amplifiers as a power amplifier for your guitar setup in combination with a guitar preamp? For example Triaxis.
Or is this going to sound like sh*t?
I was wondering if this was possible as I could buy this cheaply. Perhaps still possible to make some tweaks. But I don't know if these amps are much different from the SS amps for guitars.
Of course the best combination is a triaxis with a mesa 2:90. But the budget is currently not sufficient there.
I was looking at an SS power amp to complement my 19 "rack. And by chance I came across the aforementioned amplifier. But I had no idea if this could just be combined with a guitar preamp.
I can get a mosfet power audio amplifier. A Ohio PLX 2500.
But is it also possible to use these types of amplifiers as a power amplifier for your guitar setup in combination with a guitar preamp? For example Triaxis.
Or is this going to sound like sh*t?
I was wondering if this was possible as I could buy this cheaply. Perhaps still possible to make some tweaks. But I don't know if these amps are much different from the SS amps for guitars.
Of course the best combination is a triaxis with a mesa 2:90. But the budget is currently not sufficient there.
I was looking at an SS power amp to complement my 19 "rack. And by chance I came across the aforementioned amplifier. But I had no idea if this could just be combined with a guitar preamp.
Quality SS power amplifiers of MOSFET design are generally very good.
Come out of your pedal board, straight into the amplifier, you will need Bridge Mode for mono power and there you are.
Come out of your pedal board, straight into the amplifier, you will need Bridge Mode for mono power and there you are.
A lot of the older rackmount SS amps are really solidly built and with most of the new designs going Class D, a used Class AB with huge power can be had for really low cost.
Make sure to use with a guitar speaker cab that can handle rated power or use a limiter.
Cheers
Make sure to use with a guitar speaker cab that can handle rated power or use a limiter.
Cheers
"Can it sound good?" In other words 'If I clip it will it sound harsh? SS design usually uses a fair amount of NFB to cure ills. How the amp sounds in clipping might have more to do with its design rather than the SS device. But is you were only to use it clean and not clip it, it should be fine.
"Or is this going to sound like sh*t?" Does the output of your "preamp" sound that way?
All this amp will do is make whatever quality that sound is, louder. Being stereo, you could make your sound "fatter" by putting an effect between channels, each driving individual speakers.
I would not expect to use such an amp to introduce anything into the sound other than transparency. If you clip it, probably will "sound like sh*t" - and wreck your speakers too.
All this amp will do is make whatever quality that sound is, louder. Being stereo, you could make your sound "fatter" by putting an effect between channels, each driving individual speakers.
I would not expect to use such an amp to introduce anything into the sound other than transparency. If you clip it, probably will "sound like sh*t" - and wreck your speakers too.
Yeah Solid state power amps like that should not be used to clip or distort the preamped signal.
My Crest VS900 would blow up most big speaker cabs if I ran it continously clipping. All the clipping and limiting should be done prior to the power amp. If you preamp sounds good and is giving a good source signal, there is no reason why the power amp shouldn't reproduce that.
My Crest VS900 would blow up most big speaker cabs if I ran it continously clipping. All the clipping and limiting should be done prior to the power amp. If you preamp sounds good and is giving a good source signal, there is no reason why the power amp shouldn't reproduce that.
(My emphasis.)
What Shanx said is important, particularly if you plan to overdrive your preamp at all. (Never overdrive the MOSFET power amp itself, as others have said.)
The reason is that guitar speakers have very strange frequency responses (if you come from "normal" audio.) They have a peak somewhere between 2 kHz and 3.5 kHz, and then very steeply roll off the treble above that frequency. This removes the horrid-sounding harsh high frequencies from the distorted guitar.
The attached image shows the manufacturer's published frequency response for an Eminence Legend 1028 (which has less of a peak than some other popular speakers), with some annotations I added. You can see that this applies a *lot* of EQ to the guitar signal - deep bass is filtered out, mid-bass is bumped up a bit, there is progressive treble emphasis from about 300 Hz to 3 kHz, and frequencies above 4 kHz are rolled off very steeply indeed.
If you don't use a guitar speaker, but instead use a P.A. or other nominally flat-response speaker, then you will probably need to put some kind of guitar cab emulation circuit between your preamp and your power amp. This is basically a complicated filter that more or less reproduces the frequency response curve of a guitar speaker.
I'm not familiar with your specific preamp, but some guitar preamps will include a cab emulation filter, and some will let you switch it in (for use with flat-response speakers), or switch it out (for use with a guitar speaker and cab.)
-Gnobuddy
