Good day all,
I am a Mechanical Engineer by qualification, a Process Engineering Intern for the Remote Monitoring and Diagnostics Centre for a power utility and hardware/electronics hacker by hobby.
I have always been interested in sound. I used to do sound engineering for my whole school career, played enough instruments to know a bit and even assisted my brother with his car ICE sound offs. I have been limited by budget and experience but now plan to make some good solutions that I'm working and have learned a bit.
I have always loved guitar valvestate amps and had a Sony micro hi-fi with good speakers. I am planning to build a good amp for these 6Ohm Sony SS-H70 speakers. I also have an idea for a low powered system for off-the-grid sound (powered by USB from a battery bank).
I hope this forum can help me fill the gaps and get these projects online.
Keep safe.
I am a Mechanical Engineer by qualification, a Process Engineering Intern for the Remote Monitoring and Diagnostics Centre for a power utility and hardware/electronics hacker by hobby.
I have always been interested in sound. I used to do sound engineering for my whole school career, played enough instruments to know a bit and even assisted my brother with his car ICE sound offs. I have been limited by budget and experience but now plan to make some good solutions that I'm working and have learned a bit.
I have always loved guitar valvestate amps and had a Sony micro hi-fi with good speakers. I am planning to build a good amp for these 6Ohm Sony SS-H70 speakers. I also have an idea for a low powered system for off-the-grid sound (powered by USB from a battery bank).
I hope this forum can help me fill the gaps and get these projects online.
Keep safe.
Thank you, I've browsed the site for ages but am glad to have finally taken part.
The amp for the Sony drivers isn't too interesting, for this forum, I think. My issue is having found it impossible to track down the speakers rated RMS power to design said amp. I was hoping someone on diyAudio might know.
Regarding the low power sound system, we are experiencing scheduled brown outs regularly in SA at the moment and I think some well designed but cheap solutions could be used to charge during off peak or go completely off grid. The idea came to me since my LG Monitor actually receives only DC power from an adapter. I didn't want to build a system using expensive and inefficient inverter systems.
The amp for the Sony drivers isn't too interesting, for this forum, I think. My issue is having found it impossible to track down the speakers rated RMS power to design said amp. I was hoping someone on diyAudio might know.
Regarding the low power sound system, we are experiencing scheduled brown outs regularly in SA at the moment and I think some well designed but cheap solutions could be used to charge during off peak or go completely off grid. The idea came to me since my LG Monitor actually receives only DC power from an adapter. I didn't want to build a system using expensive and inefficient inverter systems.
Welcome!
Got a 12V SLA battery and a General purpose charger.. a bluetooth module from logitech ...a box and a pair of speakers and Bob is your uncle.
If I had to do it again I would probably use an amplifier board with built in bluetooth.
PS. I was born and bred in Gauteng. Only then it was called Transvaal.
This is not really an issue...unless you want it to be.
I recently built a low power portable sound system. With this module: 2 x 8Watt Class D Audio Amplifier Board TPA3110 2W Stereo Power Mini HiFi | eBay
Got a 12V SLA battery and a General purpose charger.. a bluetooth module from logitech ...a box and a pair of speakers and Bob is your uncle.
If I had to do it again I would probably use an amplifier board with built in bluetooth.
PS. I was born and bred in Gauteng. Only then it was called Transvaal.
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I tend to agree with Bas over the RMS rating. I think they will probably be as little 10 watts RMS, maybe even less but driven cleanly from a suitable amp and its not really a problem in practice. Used sensibly and they would be fine on a 30 to 50 watt rms amp if you so wanted.
Thank you Bas, I'm going to order that little amp asap. I had been debating making my own Class D one, that saves me the effort of trying to work out PSU design.
Thank you both re the RMS but I think they're 60W judging by ratings I've seen on newer (8Ohm) versions. I'm worried about it because I'm likely going to want to drive them at full volume at least some times and underpower will damage them.
But thank you both, I'm going to look toward 60W for 6Ohms, which should be ample.
Sent from my XT1072 using Tapatalk
Thank you both re the RMS but I think they're 60W judging by ratings I've seen on newer (8Ohm) versions. I'm worried about it because I'm likely going to want to drive them at full volume at least some times and underpower will damage them.
But thank you both, I'm going to look toward 60W for 6Ohms, which should be ample.
Sent from my XT1072 using Tapatalk
Sadly my update is life got in my way. I have been doing little bits of research whenever I found myself with time and saw my Sony speakers but didn't finalise any decisions [emoji85]
I still want to try make a DC powered mini entertainment system (especially since the new Raspberry Pi is so powerful). But my little Logitech speakers died before I could start.
My current game plan is to build a bigger amp for those Sony Speakers or bin them and make one of the many DIY mini Monitor builds I've seen on this site.
Thank you all for your advice!
Hey, boet. You are welcome to join us on avforums.co.za if you would like to hook up with local DIYers.
Hi Shaun,
Absolutely! One of my first stumbling blocks with all of this was local sources of parts.
