Hello audio enthusiasts!
I'm an absolute biginner in audio DIY and I'm trying to build a 4 channel amplifier for my speakers. My amplifier is a Sure tk2050 4x100w and I have a Meanwell clone s350-24 power supply provided by Sure. Since, I don't want to risk hurting my speakers should I buy a speaker protection board? If I understand correctly then I have to buy a second power supply to run it... Also, do I need a soft start with my power supply or not?
Edit: Correct me if I'm wrong, but in most tk2050 builds there is no speaker protection. Is there a risk? I know I'm asking something really fundamental, but I really need some help!
I'm an absolute biginner in audio DIY and I'm trying to build a 4 channel amplifier for my speakers. My amplifier is a Sure tk2050 4x100w and I have a Meanwell clone s350-24 power supply provided by Sure. Since, I don't want to risk hurting my speakers should I buy a speaker protection board? If I understand correctly then I have to buy a second power supply to run it... Also, do I need a soft start with my power supply or not?
Edit: Correct me if I'm wrong, but in most tk2050 builds there is no speaker protection. Is there a risk? I know I'm asking something really fundamental, but I really need some help!
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Sorry to hijack your thread...
I'm panning to buy a TK2050, but the 2X50W version... How do you like that board?
I'm panning to buy a TK2050, but the 2X50W version... How do you like that board?
You don't need a soft start with switch mode supplies?
You will have to look at the TK2050 datasheet to find if they implement any dc protection circuit inside the chip.
Sure amps have a bad reputation concerning their quality. I would not use them without speaker protection.
In the other hand hifimediy amps (TK2050 as well) have a lot of positive feedback.
You will have to look at the TK2050 datasheet to find if they implement any dc protection circuit inside the chip.
Sure amps have a bad reputation concerning their quality. I would not use them without speaker protection.
In the other hand hifimediy amps (TK2050 as well) have a lot of positive feedback.
Taken from the TK2050 Datasheet:
"The TK2050 is protected against over-current, over / under-voltage and over-temperature conditions."
"The TK2050 is protected against over-current, over / under-voltage and over-temperature conditions."
Assuming of Course.. that it is a Genuine Chip and not a Clone, like those Mundorfs and Alps pots 🙂
Usually you don't need soft start with SMPS.
They have soft start built in.
I have always used speaker protection but my gear is used for a disco where the wires are getting tripped over and pulled out.
At home I don't bother as the wires aren't touched.
Mine is 4x100w so maybe they are different. Anyway, I haven't tested it fully (only with some small, old speakers), but I can say that the amp is silent and there is no hiss on standby. I can't say much about the sound quality.
Champs thank you for your answers. If I understand correctly in case of power supply damage the amp should protect my speakers even without speaker protection, right?
I would be thankful to have an answer to my question. I'm mostly concerned about damage in case of electricity cut off.
I try not to use speaker protection, the purist in me calls for no shoddy relay contacts in the signal path.
It's a risk you take. My bombproof F5 failed and fried a £350 speaker.
It's a risk you take. My bombproof F5 failed and fried a £350 speaker.
Rod Elliotts ESP website has a good protection project P33. A solid state relay avoids the problems associated with mechanical relays both in terms of contact welding, oxidation and distortion due to materials/magnetics, but they do cost more in parts. I have started selling completed SSR modules on my website.
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