I have one of these Yamaha SC-02 mini guitar practise mixer things. It runs on two 1.2v - 1.5v batteries.
I was thinking of powering with a bank of four 18650s which would sit underneath quite nicely.
I'm wondering if I need to add a regulator, the device appears quite analogue, so I was wondering if upping the voltage to 4.4v would be detrimental to it's functioning.
Posted in headphones because it's designed for headphones, and I use it as a little headphone amp, it even drives my old 2k ohm DT-100 nicely.
I was thinking of powering with a bank of four 18650s which would sit underneath quite nicely.
I'm wondering if I need to add a regulator, the device appears quite analogue, so I was wondering if upping the voltage to 4.4v would be detrimental to it's functioning.
Posted in headphones because it's designed for headphones, and I use it as a little headphone amp, it even drives my old 2k ohm DT-100 nicely.
Two cells means 3volts. A single 18650 may be too high at 4.2volts.
A 50% excess voltage may be too much, even though it has a DC to DC convertor on board. If it all goes pear shaped, you can always buy another one. Maybe just F2 will fail. I don't know as I don't subscribe to modyfiying perfectly good equipment.
A 50% excess voltage may be too much, even though it has a DC to DC convertor on board. If it all goes pear shaped, you can always buy another one. Maybe just F2 will fail. I don't know as I don't subscribe to modyfiying perfectly good equipment.
Cheers.
I now see that the photos are bad and don't show the power input stage clearly.
So anyway to be safe I'll use one of those little 3.3v regulators, which should be fine given that new AA cells often start at 1.6v
It is perfectly good, however 1.2v rechargeables don't last very long and I'm not going to buy disposable cells to run something that cost less than £10 off eBay. This way, it'll get a lot more use.
I now see that the photos are bad and don't show the power input stage clearly.
So anyway to be safe I'll use one of those little 3.3v regulators, which should be fine given that new AA cells often start at 1.6v
It is perfectly good, however 1.2v rechargeables don't last very long and I'm not going to buy disposable cells to run something that cost less than £10 off eBay. This way, it'll get a lot more use.
