Building Class-D 50-100W guitar power amp as a beginner

[newprint]

Hello ! I have to premise this message by saying that I'm a beginner DYI electronic hobbyist with a software engineering background.

I want to build a portable, 50-100 Watt class-D amplifier (i.e. amp head) for playing jazz guitar, on top of that I also intend to build a cabinet with EVM12L or a similar speaker for a clean sound. Some of you could say this is terrible idea, since class D guitar amps and amplifiers are cheap & readability available. Fender Rumble 40, class -D, has a very clean jazz sound for a bass amp, on the secondary market goes for about $150 used/ $200 new. Also, I already have guitar combo specifically designed for jazz : Ibanez Wholetone WT80, Class-D, 15" speaker, but I want something different.
Here are my parameters:
- A simple board that I can wire-up and put in the simple metal case. Doing some online research, Icepower & Texas Instrument boards are are popular choices. But I have no idea what boards will fit my needs. There are number detailed DYI projects on YouTube for home audio (not guitars) using Icepower boards, but those projects used boards that handle 1000W+, which is an overkill for what I need.
- I have no issues if boards is for PA or HiFi as long as it gives me clean signal to drive the EVM12L.
- Pref. build in power supply.
- Pref. no preamp or eq on board. Just a volume knob, line level input (external pream & eq will be used) and a speaker output.

Any suggestion or critique are welcomed.
Thank you !

 

[Matador]

Why class D? You can get that wattage pretty easily through a class AB MOSFET power amp.

 

[abbey road d enfer]

Any suggestion or critique are welcomed.

There are many boards using TPA3116D2, capable of 2x50W into 4 ohms.

 

[rogs]

I'm with Matador on this one..... building a class D amplifier as a 'one off' hobby project is going to be a challenging task.
It is possible to build a class D amp using discrete 'thru hole' components - I've actually done it - but it's not something I'd ever do again !

There are lots of modules available as building blocks - like the one Abbey has linked to in post #3 - but creating a decent SMD layout for a complete one off project is not for the faint hearted. Getting noise down to acceptably low levels - and making a reliable amplifier - will likely involve several prototypes.

For a 50 - 100 watt 'clean' guitar amp, a class A/B Mosfet amp... using lateral mosfets... has got to be a simpler solution as a 'one off' hobby amp build.
Take a look at Rod Elliot's page here: https://sound-au.com/project101.htm as an example.
There are fewer lateral mosfet choices these days - I don't think there are any T03 lateral mosfets still in production? - but Exicon still make T0247 style devices..

If you do want to go Class D, then I think buying a complete amp module and simply adding power supplies, enclosures and connectors will likely produce a better result, as a one off hobby project...
I've used Hypex amp modules before, and found them excellent, but they're not cheap.
I'm sure others will advise on different types of class D module they've used, and can recommend?...

....Just my 2 cents