So I have a few rackmount stereo power amps, a tube guitar head, and a bass amp...
Reality is that for guitar, I'm moving more to modelers and the sort, so am thinking about a small stereo power amplifier than can do maybe like 40wpc at 8ohm, which would still be a lot.
Curious tho, I am always into the Class D chip,s, and have a few boards etc... and wondered... Is that gonna be my best bang for the buck in regards to getting clean watts cheap? I know there are more elaborate ways to go about it, and read that MOSFETs sound better than OpAmps when they overdrive, but believe any FET based amp will be much more expensive and complex, yes?
Any help is appreciated, as I've never given much thought to this before and searches aren't turning up a ton I can go off. Thanks in advance.
Reality is that for guitar, I'm moving more to modelers and the sort, so am thinking about a small stereo power amplifier than can do maybe like 40wpc at 8ohm, which would still be a lot.
Curious tho, I am always into the Class D chip,s, and have a few boards etc... and wondered... Is that gonna be my best bang for the buck in regards to getting clean watts cheap? I know there are more elaborate ways to go about it, and read that MOSFETs sound better than OpAmps when they overdrive, but believe any FET based amp will be much more expensive and complex, yes?
Any help is appreciated, as I've never given much thought to this before and searches aren't turning up a ton I can go off. Thanks in advance.
If you are modelling, then power amps just send that signal to speakers unchanged.
Not supposed to overdrive by themselves so no advantages into using FETs (or discrete bipolars) .
Only suggestion is to use somewhat larger power amps, so they never ever clip themselves.
If using Class D, confirm how much power into your speakers.
For example, very popular TPA3118 are "60W per channel" ... but only if fed stable 26V or so, and into 4 ohm loads. You will only get 30 W into 8 ohms and 15W into 16.
Not supposed to overdrive by themselves so no advantages into using FETs (or discrete bipolars) .
Only suggestion is to use somewhat larger power amps, so they never ever clip themselves.
If using Class D, confirm how much power into your speakers.
For example, very popular TPA3118 are "60W per channel" ... but only if fed stable 26V or so, and into 4 ohm loads. You will only get 30 W into 8 ohms and 15W into 16.
Yes I am kind of thinking that even 40w would be a ton. I recall I had built a Lil Ruby amp with 0.5 watt that was too much at times when turned up.
One thing I kind of like is that I could run a 12v PSU for practice then run a 24v for jamming etc... lots of flexibility.
Good to know about the FET amp being kind of unnecessary. I'm just brainstorming at this point, and I've got a pair of 16ohm speakers, so it will curb the output some too on each channel.
15 years ago I tried the multi FX route and it wasn't great, now I find myself playing into my DAW because I have every sound at my disposal... now I want to take it with me. Can't drag a PC everywhere 😂
Would a TPA3116 or a TDA based chip be more preferred? I believe the EHX Magnum 44 uses one of them, but not sure. I'm even seeing their 2.5w one, which really has me stumped what it'd be.
One thing I kind of like is that I could run a 12v PSU for practice then run a 24v for jamming etc... lots of flexibility.
Good to know about the FET amp being kind of unnecessary. I'm just brainstorming at this point, and I've got a pair of 16ohm speakers, so it will curb the output some too on each channel.
15 years ago I tried the multi FX route and it wasn't great, now I find myself playing into my DAW because I have every sound at my disposal... now I want to take it with me. Can't drag a PC everywhere 😂
Would a TPA3116 or a TDA based chip be more preferred? I believe the EHX Magnum 44 uses one of them, but not sure. I'm even seeing their 2.5w one, which really has me stumped what it'd be.
Not sure what Magnum 44 uses, but in any case supply voltage will tell you the story.
Like famous Tech Enzo used to say: "the amplifier is just that thingie between the power supply and the speaker" 😄
Like famous Tech Enzo used to say: "the amplifier is just that thingie between the power supply and the speaker" 😄
