Hey guys... I have some "basic" skill in electronics, but I do like to tinker.
I have a mid-'80s TERMINATOR by Synsonics guitar. For those who never heard of it, it was a 3/4 size guitar with a built in amp and 3.5" speaker. All-in-One guitar and amp for kids to learn on. I got one that needs some restoration and figured for fun I'd upgrade it as well. Most is straight forward, with some new hardware, new potentiometers, switches, etc... but the amp is where I may need me some guidance.
My workshop is still being re-built so haven't had a good chance to fully dismantle the guitar yet, but looks like it has 2x9v battery powering a 1.6w 8ohm speaker (which I plan to upgrade). I believe the batteries are running in parallel so I guess 9v with 800-900mAh. Small 2-way toggle turns the amp on/off. It also has a 1/4" headphone output jack.
Ideally, I'd like to replace the 2x9v batteries with something like a Li-Ion pack, maybe 7.4v. I see that some have 2 plugs [1 for power out (JST) and 1 for recharging (XH-3P)] and thought I could get a small board for USB charging and a board that forces the output to 9v. I could go 11.1v but not having luck finding a USB-C charging board for it.
Then I saw those small VHM-314 Bluetooth boards, about 3cmx3cm... Could play backing tracks off the phone while playing along through the built-in speaker. 3.7-5v DC.
So... the Bluetooth board, how do I go to mono? Left speaker only? Do I combine the two into 1? Power wise, can I use the same Li-Ion battery and split it's output into 2 and have a 9v and a 3.7v converter board? or go from the battery to the 9v board, then split the output from the 9v board and run to the 3.7v board and the amp? Should I keep looking for an 11.1v USB charger board?
It's a needless upgrade, but fun learning project is how I look at it. Having a recharge USB port, longer battery life, and ability to play with a backing track would be a bonus.
Rest of the upgrades need to be done because 30yrs old and falling apart.
I have a mid-'80s TERMINATOR by Synsonics guitar. For those who never heard of it, it was a 3/4 size guitar with a built in amp and 3.5" speaker. All-in-One guitar and amp for kids to learn on. I got one that needs some restoration and figured for fun I'd upgrade it as well. Most is straight forward, with some new hardware, new potentiometers, switches, etc... but the amp is where I may need me some guidance.
My workshop is still being re-built so haven't had a good chance to fully dismantle the guitar yet, but looks like it has 2x9v battery powering a 1.6w 8ohm speaker (which I plan to upgrade). I believe the batteries are running in parallel so I guess 9v with 800-900mAh. Small 2-way toggle turns the amp on/off. It also has a 1/4" headphone output jack.
Ideally, I'd like to replace the 2x9v batteries with something like a Li-Ion pack, maybe 7.4v. I see that some have 2 plugs [1 for power out (JST) and 1 for recharging (XH-3P)] and thought I could get a small board for USB charging and a board that forces the output to 9v. I could go 11.1v but not having luck finding a USB-C charging board for it.
Then I saw those small VHM-314 Bluetooth boards, about 3cmx3cm... Could play backing tracks off the phone while playing along through the built-in speaker. 3.7-5v DC.
So... the Bluetooth board, how do I go to mono? Left speaker only? Do I combine the two into 1? Power wise, can I use the same Li-Ion battery and split it's output into 2 and have a 9v and a 3.7v converter board? or go from the battery to the 9v board, then split the output from the 9v board and run to the 3.7v board and the amp? Should I keep looking for an 11.1v USB charger board?
It's a needless upgrade, but fun learning project is how I look at it. Having a recharge USB port, longer battery life, and ability to play with a backing track would be a bonus.
Rest of the upgrades need to be done because 30yrs old and falling apart.