Hi,
Is there anyone who knows what the improvements made on the UCD400 OEM V6 and V7 is about?
Overall performance improvements, two stage dc protection, lowe idle power dissipation and improvements for multichannel usage it says on the spec.
http://www.hypex.nl/docs/UcD400OEM_datasheet.pdf
I cant really figure out if it is necessary changes or just small improvements that one can be without.
I am planning on building a 8 channel amp using a version 5 modules. Would getting a version 5 module be a bad idea or is it better to use the 400hg/180hg version performance-wise? I really only need the power of the 180hg, however HG modules will at least be costing twice not counting the eight extra input buffers needed for the oem modules.
And have anyone made a input buffer for oem modules that they want to share? schematics and maybe pcb-layout? I have searched but found nothing that was complete.
Is there anyone who knows what the improvements made on the UCD400 OEM V6 and V7 is about?
Overall performance improvements, two stage dc protection, lowe idle power dissipation and improvements for multichannel usage it says on the spec.
http://www.hypex.nl/docs/UcD400OEM_datasheet.pdf
I cant really figure out if it is necessary changes or just small improvements that one can be without.
I am planning on building a 8 channel amp using a version 5 modules. Would getting a version 5 module be a bad idea or is it better to use the 400hg/180hg version performance-wise? I really only need the power of the 180hg, however HG modules will at least be costing twice not counting the eight extra input buffers needed for the oem modules.
And have anyone made a input buffer for oem modules that they want to share? schematics and maybe pcb-layout? I have searched but found nothing that was complete.
I've used the input buffer schematic shown on page 6 of that datasheet with no problems, just using TL072 opamps. I mounted it on perf board.
The newer model has a better inductor for the HF blocking. It doesn't run as hot! Specification otherwise seems the same.
Ok. Isn't there a TL072 input buffer already on the board just connecting pin 30-31 and 26-27? I thought about using lm4562 or similar high performance opamps to get better performance, but maybe one can use the same schematics. But will breadboard be good enough for a fast opamp?
I dont know if there is anything is wrong with it, maybe it's just not as good as a buffer with LM4562.
So the amp needs better cooling, in this case the airflow i guess. Perhaps some degraded sq compared to the newer models then, the inductor is after all an important part of the output filter right?
I've also read some comment about newer modules have some of the ncore tech implemented whatever that means.
The output inductors were tape wound and over time developed shorted turns as the inductance reduces, causing heat. In an open plan case, not a problem but in a small box with a power supply next to it, there are heat issues.
The newer models have a heavier gauge winding.
The newer models have a heavier gauge winding.
Gussing 8 channels + psu stuffed in a box could cause heat problems, probably not worth taking the risk buying those, no wonder those V5 ucd oem-modules had a good price compared to hg modules.
- Status
- Not open for further replies.