If elderly, or managing any health condition, please ignore the following.
1: Place amp beside your bed.
2: Every morning when you get up, stub your toe on said amp and curse yourself for being daft enough to take advice from strangers on the internet.
3: Wait, that's not supposed to happen - place the amp a bit further from your bed than that.
4: Every morning, when you get up, lift the amp to chest height. Once.
5: Carry on with the rest of your day.
6: Once step 4 becomes habitual, add another rep.
7: Once step 6 becomes habitual, add another rep.
8: Once step 7 becomes habitual, add another rep.
9: Once step - hang on, you see where this is going, right?
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X: Once your significant other notices the effect on your physique enough that you're getting more nookie, come back here and laugh at the idea of getting rid of the piece of fitness equipment that occasionally doubles as an amp 😜
If you still want to reduce weight, the Yamaha DBR series are often mentioned as the minimum many pro sound people would recommend for sound quality - they're a little more expensive than the Alto TS but I'd be confident they'd sound better - that being said I've never used an Alto (and a DBR only extremely briefly) so take that with a grain of salt.