If sound is the main preference. Which is the best amps?
I have up to 30V available and it isnt neccesary with three figure watt. +/- 30 watt in 8 Ohm is enough.
I have up to 30V available and it isnt neccesary with three figure watt. +/- 30 watt in 8 Ohm is enough.
I think 30vDC isn't enough for 30watt into 8ohm. Although you can try some car chipamp or Class-d amplifiers.
With a full bridge topology (BTL) you can expect upto 50W into 8 Ohms. Generally, there is no "best sounding" amp - simply because no widely accepted criteria for best sound do exist at all. Actual class-d-chips have reached maturity imho, I prefer the TI range from TPA3116 upto TPA3255.
But there are many ways to spoil these by poor designs delivered from al cheapo far-east traders.
But there are many ways to spoil these by poor designs delivered from al cheapo far-east traders.
Yes a bridge tda2050 can deliver more than 30watt but sonically i don't know how good it would be. Not worth the effort i believe. You can try class-d amps.
LM 1875 is about 10 watts at +/- 15VDC.
The TDA 72xx series from ST would have similar to higher rated amps.
Can always choose Mosfet.
But really why so much power?
Listening area size, sound level in dB?
The TDA 72xx series from ST would have similar to higher rated amps.
Can always choose Mosfet.
But really why so much power?
Listening area size, sound level in dB?
Like Bucks said, bridged Class D will meet your specs.
Modern good quality amps "all sound the same"; if they sound "different" it´s because they´re coloring the sound, hence should better be called "Effects boxes".
Modern good quality amps "all sound the same"; if they sound "different" it´s because they´re coloring the sound, hence should better be called "Effects boxes".
I have made this speakers with Seas DXT tweeter and CA22RNY woofer.
I will use it in my off grid mountain cabin. It has solar power and a huge 12V battery.
A Victron DC to DC converter can increase the voltage up to 30V.
I like to play loud. The loudspeaker will be crossed over active with miniDSP 2X4HD so i need four channels.
I will use it in my off grid mountain cabin. It has solar power and a huge 12V battery.
A Victron DC to DC converter can increase the voltage up to 30V.
I like to play loud. The loudspeaker will be crossed over active with miniDSP 2X4HD so i need four channels.
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try Yamaha YDA138 class D amp.
XH-M531 Digital Yamaha 2x20W HIFI Audio Stereo Class D Amplifier Board YDA138-E | eBay
XH-M531 Digital Yamaha 2x20W HIFI Audio Stereo Class D Amplifier Board YDA138-E | eBay
Got a similar setup, minidsp 2x4 and two Aiyima A04 (TPA3251) amps for powering my speakers. Although I´m swapping amps often and will exchange them in the future, they work fine with 24V.
As mentioned the TPA3255 will provide 50W/8Ohm at 30V.
Haven´t calculated the idle dissipation of a TPA3255 but would reckon it´s around 1-2W. Going lower in voltage (if you don´t need the power) will also reduce that dissipation a little if you want to save some more.
24V for a BTL TPA3255 amplifier will yield around 25W/8Ohm.
I´d definitely recommend class-d amps when being solar powered and listening loudly.
You should talk about all those nice looking things in the background😉
I see 4 huge horns and 2 subs?
As mentioned the TPA3255 will provide 50W/8Ohm at 30V.
Haven´t calculated the idle dissipation of a TPA3255 but would reckon it´s around 1-2W. Going lower in voltage (if you don´t need the power) will also reduce that dissipation a little if you want to save some more.
24V for a BTL TPA3255 amplifier will yield around 25W/8Ohm.
I´d definitely recommend class-d amps when being solar powered and listening loudly.
You should talk about all those nice looking things in the background😉
I see 4 huge horns and 2 subs?
I never bought a ready made amp module but built them from scratch. So I can give no recommandation which module to buy.
You need one of these;
200W Bluetooth 5.0 Amplifier Board TPA3116,DAMGOO 100W+100W Audio Amp Board | eBay
As long as you are ok with Bluetooth as an input, eliminates issues with ground loops, long cables, etc. They have two (2) TPA3116 amps, sound nice.
200W Bluetooth 5.0 Amplifier Board TPA3116,DAMGOO 100W+100W Audio Amp Board | eBay
As long as you are ok with Bluetooth as an input, eliminates issues with ground loops, long cables, etc. They have two (2) TPA3116 amps, sound nice.
I've tried TPA3116, TPA3255 and they're beaten by TDA8932. But the implementation is as important as the chip. TDA8932 does ~30W/8R with a 24V regulated supply.
Is this good quality?
TDA8932 Based Audio Amplifier Board Pinout, Datasheet, Features & Specifications
TDA8932 Based Audio Amplifier Board Pinout, Datasheet, Features & Specifications
You could probably modify shown amp into something OK but I´d stay away from the shown version as it is. Probably ceramic caps for the input coupling.
If you don´t mind soldering a bit, abraxalito offers kits to build mono amps which are probably the best opportunity to try a TDA8932.
You will have to do SMD soldering though.
If you don´t mind soldering a bit, abraxalito offers kits to build mono amps which are probably the best opportunity to try a TDA8932.
You will have to do SMD soldering though.
Regarding the far east cheap designs mentioned on the page prior - i tested several of them and unhappily found large deviation in performance of devices even when from one supplier.
Regarding quality in general: For bass frequencies, there is hardly something better than PDM-audio with digital amping. I am currently using some TPAs for my bass array.
Regarding quality in general: For bass frequencies, there is hardly something better than PDM-audio with digital amping. I am currently using some TPAs for my bass array.
That's entry-level. To get good quality sound from a TDA8932 attention is needed to two main aspects.
Firstly the signal power supply needs regulating. TDA8932 has two sets of power pins - power and signal. Its the signal power pin which is most sensitive to regulation - all entry-level boards I've seen just follow the application in the DS and that shows a simple RC network from the power pins to filter noise going to the signal power pin. That RC simply isn't good enough.
Second - there's a strong chance of RF pick-up between output and input. The easiest way to deal with this is by transformer isolating the input. Which also handles the fact that TDA8932 has a differential input whereas most sources are single-ended.
As @joensd mentioned, I have PCB gerbers you can download and also kits for an implementation which sounds good and attends to the above points.