I got my G3H today (it's still at the postoffice). I will report back.
With import VAT, freight etc it's not really cheap though.
With import VAT, freight etc it's not really cheap though.
Looks compromised to me by the height restriction. Short pancake-style caps have higher inductance and higher ESR than tall, slender caps of the same value.
True, would guess that's why they used "so much more" volume/capacitance. 2x4700uF is way more than the datasheet suggests. But these do 10A ripple together, if needed.
I had chosen 2x1800uF for my new board at < half the ESR - hopefully not a bottleneck. Needs a high bw supply then.
I had chosen 2x1800uF for my new board at < half the ESR - hopefully not a bottleneck. Needs a high bw supply then.
yes 3251 - If I knew 3255 was coming soon I might have been waiting.
If you build your own case and solder a bit, then the price is a bit high compared to other stuff like Hypex and Audiopower. With a cheap steel chassis I can for little more build two monoblock AudioPower MDA400 amplifiers.
If you build your own case and solder a bit, then the price is a bit high compared to other stuff like Hypex and Audiopower. With a cheap steel chassis I can for little more build two monoblock AudioPower MDA400 amplifiers.
I paid 25% VAT and 24$ customs handling fee. All included I paid 289$
I have read a lot about sinewave and just had to try this out.
Unfortunatly there is a very high pitch noise from the PSU. It's so high that I can't really evaluate the amplifier. I have send a message to the company, and hope for a replacement soon.
Two Audiopower MDA400 is around 300$ plus freight. It's not a fair comparison I know. But the price difference is not that big, when you consider the quality and more power of the Audiopower amplifier.
I have read a lot about sinewave and just had to try this out.
Unfortunatly there is a very high pitch noise from the PSU. It's so high that I can't really evaluate the amplifier. I have send a message to the company, and hope for a replacement soon.
Two Audiopower MDA400 is around 300$ plus freight. It's not a fair comparison I know. But the price difference is not that big, when you consider the quality and more power of the Audiopower amplifier.
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I have put it away in a drawer, so I can almost here no noise.
The amp is quite silent and do sound very good. I use it in biamped system, and its driving MarkAudio fullrange drivers right now.
The amp is quite silent and do sound very good. I use it in biamped system, and its driving MarkAudio fullrange drivers right now.
Thanks for the usage report. How infuriating that SineWave would release an audio product which produces a high pitched whine!
I have contacted the seller here (Authlx), and on their aliexpress shop. Answer from their shop was that the noise is within their quality control specifications.
yes it's from the PSU, and if you read in the TAS5630 vendor thread they know about this, and that is also the answer from their shop (Freya responds). But, They say it's normal with no load.
I still think I can make som kind of agreement with them
I still think I can make som kind of agreement with them
Ah with no load isn't a surprise. Switching supplies tend to go into burst or discontinuous condition mode during light loading. This can bring switching or parts of the switching into the audible band.
The easiest way around this would be to load the output of the PSU with a suitably sized resistor, say load it with 10 additional watts, or however much is enough to bring it into normal operation.
The easiest way around this would be to load the output of the PSU with a suitably sized resistor, say load it with 10 additional watts, or however much is enough to bring it into normal operation.
Exit G3H PSU standby mode
Hello, everyone.
If you can not accept the G3H standby mode hitckup noise, please help us to skip this mode, (like our G300V21, we use one load resiter at 50V Vcc.)
You can solder one 3W/510R or 5W/330R resister to the main DC line, the position show below photo. of course standby power consumption increase, and amp case warm
Thanks for the 5th element reminder, we omit the load resiter in G3H, G300V21 have this load resister,aim to save more energy .
Our new G6H moule with TPA3255 chip +1KW PSU have completed, we will select 10 diyaudio members to test it, you only bear the board cost and shipping cost, if like ,please send private message to me.
TKS
Hello, everyone.
If you can not accept the G3H standby mode hitckup noise, please help us to skip this mode, (like our G300V21, we use one load resiter at 50V Vcc.)
You can solder one 3W/510R or 5W/330R resister to the main DC line, the position show below photo. of course standby power consumption increase, and amp case warm
Thanks for the 5th element reminder, we omit the load resiter in G3H, G300V21 have this load resister,aim to save more energy .
Our new G6H moule with TPA3255 chip +1KW PSU have completed, we will select 10 diyaudio members to test it, you only bear the board cost and shipping cost, if like ,please send private message to me.
TKS
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