Hi all,
I would appreciate guidance for searching the world of Class D amplifiers, looking at a pair of amplifier modules / power supplies that can fulfil the following:
Can anyone recommend which of the 'Aliexpress' modules (or otherwise) can meet these? I have been burnt before by modules failing under load or just proving generally unreliable. I have been looking mainly at the IRS2092s and the UCD clones that seem to be all over there. I would ideally spring for something like two Hypex FA252 (it's for two active subwoofers), but they would blow the budget out of the water!
Many thanks in advance.
I would appreciate guidance for searching the world of Class D amplifiers, looking at a pair of amplifier modules / power supplies that can fulfil the following:
- 500-1000W @ 8R
- Subwoofer duty only
- Reliable
- Affordable
Can anyone recommend which of the 'Aliexpress' modules (or otherwise) can meet these? I have been burnt before by modules failing under load or just proving generally unreliable. I have been looking mainly at the IRS2092s and the UCD clones that seem to be all over there. I would ideally spring for something like two Hypex FA252 (it's for two active subwoofers), but they would blow the budget out of the water!
Many thanks in advance.
Hi, I am using this 3255 unit, which I bought from Alli Express. however the same EBay version may be better for you.
https://www.ebay.com/itm/394414376694?hash=item5bd4edc6f6:g:2aEAAOSw4TljvNSn&amdata=enc:AQAIAAABINbJqkCRRp5Cl1fCUMvsaWPqnZG0FOSTnEHBv8djCPuDJb7yviUIKW9w1yjaQdCsryYzDoCrYxa99s/LJmsHKPBVMnQb3R96XM3qzOYSFGcKEd2K4eYGyIUT+IoxMik9GDDvfQ3alA0V+v2Iqe26FUT813CB86oF+6FB/w+km9bOPSqSBj/di54NqXqYymboiSkLAO5Z5b9z4s3s6c017vQKqKREJXgZHQxkFZFpca1nwaiyGmrxZsXVI+WhFPa9aQc2ioOsqoDuoCYTkeV5CYGkwKPS1vXy01jn8QNi9KJKhGvUMHASiwGvnS/5S93a4qhy28Qqk0rx83Ea7PPZsHnuzDt7LDiUyzjPlPsm2PS7NF4tWTnPC3iWcq+FjXg9eQ==|tkp:Bk9SR7DGlcenYg
Cheers
https://www.ebay.com/itm/394414376694?hash=item5bd4edc6f6:g:2aEAAOSw4TljvNSn&amdata=enc:AQAIAAABINbJqkCRRp5Cl1fCUMvsaWPqnZG0FOSTnEHBv8djCPuDJb7yviUIKW9w1yjaQdCsryYzDoCrYxa99s/LJmsHKPBVMnQb3R96XM3qzOYSFGcKEd2K4eYGyIUT+IoxMik9GDDvfQ3alA0V+v2Iqe26FUT813CB86oF+6FB/w+km9bOPSqSBj/di54NqXqYymboiSkLAO5Z5b9z4s3s6c017vQKqKREJXgZHQxkFZFpca1nwaiyGmrxZsXVI+WhFPa9aQc2ioOsqoDuoCYTkeV5CYGkwKPS1vXy01jn8QNi9KJKhGvUMHASiwGvnS/5S93a4qhy28Qqk0rx83Ea7PPZsHnuzDt7LDiUyzjPlPsm2PS7NF4tWTnPC3iWcq+FjXg9eQ==|tkp:Bk9SR7DGlcenYg
Cheers
Here are two:
ICEpower 1000ASP - 525W into 8 Ohms
ICEpower 250asx2 - the two channels can be used bridged for 500W
Other possibilities:
consider bridging two 4-Ohm, 500W capable modules. That would open up the options. But amps need to not already be in BTL configuration.
Buy a pro audio amplifier, e.g. Crown XLS 1002 or 1502 in bridge mode. Replace the fans with quieter ones.
I would pass on IRS2092 based amps. Pretty crappy compared to many current amps. I would not trust anything from AliExpress at this power level either!
ICEpower 1000ASP - 525W into 8 Ohms
ICEpower 250asx2 - the two channels can be used bridged for 500W
Other possibilities:
consider bridging two 4-Ohm, 500W capable modules. That would open up the options. But amps need to not already be in BTL configuration.
Buy a pro audio amplifier, e.g. Crown XLS 1002 or 1502 in bridge mode. Replace the fans with quieter ones.
I would pass on IRS2092 based amps. Pretty crappy compared to many current amps. I would not trust anything from AliExpress at this power level either!
Hi, I would recommend this FFA002V2 amplifier module from below link, it has 600W@8ohm with bridge output, which is suitable for the subwoofer application.
Thanks~
https://www.diyaudio.com/community/threads/2x150w-amp-module-for-sale.388868/
Thanks~
https://www.diyaudio.com/community/threads/2x150w-amp-module-for-sale.388868/
ICEPower AS series are good. They come in 1 or 2 channel configs, and from 100 to 2000 watts.
The ICEpower 1000ASP mentioned is no longer available.
The ICEpower 1000ASP mentioned is no longer available.
Thanks all for your replies,
CharlieLaub / StigErik, I have used the Icepower modules before, they're pretty great. I was eyeing up the 1200AS1 as an AIO solution. Sadly the cost is a little higher than I would like for small quantities. & thanks for the steer away from the aliexpress IRS2092 high power modules. I never have had good feelings looking at them.
Erica those look like they can fit the bill! I have a couple of questions to ask in the thread, thanks
CharlieLaub / StigErik, I have used the Icepower modules before, they're pretty great. I was eyeing up the 1200AS1 as an AIO solution. Sadly the cost is a little higher than I would like for small quantities. & thanks for the steer away from the aliexpress IRS2092 high power modules. I never have had good feelings looking at them.
Erica those look like they can fit the bill! I have a couple of questions to ask in the thread, thanks
Maybe discontinued, but still available at least from a local retailer here in the states:
https://www.parts-express.com/ICEpo...er-Supply-Module-1-x-1000W-326-206?quantity=1
I bought one last year and put it in a Ghent case. I use it for a subwoofer and it seems pretty capable.
That's the ICEpower 1000ASP mentioned before.
I still have two of them. Very high build quality and reliability, and good sound.
I still have two of them. Very high build quality and reliability, and good sound.
Then buy a 2 ohm sub speaker, nobody uses a 8ohm sub nowadays!! It will be a lot cheaper in the finish.
Cheers
Cheers
If you use a pro audio driver as a subwoofer you very likely will have an 8 Ohm load on your hands...
Yes, I have seen only good things about the integrated Icepower modules. Will see if I can find one for an affordable price.
And yes, 2 ohm is of course easier. Dual 2 ohm voice coil better again. I originally planned to use an Alpine R2-W10D2 with a pair of TPA3255 in PBTL per driver giving 1200W RMS per driver for an easy & potent setup.
Since that I'm looking at the Faital 10RS430, which is sadly only in 8R, with 4R not on the horizon right now.
And yes, 2 ohm is of course easier. Dual 2 ohm voice coil better again. I originally planned to use an Alpine R2-W10D2 with a pair of TPA3255 in PBTL per driver giving 1200W RMS per driver for an easy & potent setup.
Since that I'm looking at the Faital 10RS430, which is sadly only in 8R, with 4R not on the horizon right now.
That's a clever way to put a lot of power into a dual 2 Ohm voice coil driver.
What are you planning to use for a power supply that has >2.5kW on tap?
What are you planning to use for a power supply that has >2.5kW on tap?
There are quite a few telecoms 48v second hand units on eBay. I’ve also used a CNC spindle drive before with success.
An example 1.2kW amplifier can use:
1x 2kW Eltek flatpack2 power supply (£50)
2x dual TPA3255 boards (£70)
Total cost of £120.
Arguably you could add another two dual TPA boards and the power supply would still be happy given a minimum crest factor of 3dB.
An example 1.2kW amplifier can use:
1x 2kW Eltek flatpack2 power supply (£50)
2x dual TPA3255 boards (£70)
Total cost of £120.
Arguably you could add another two dual TPA boards and the power supply would still be happy given a minimum crest factor of 3dB.
Worth mentioning, I have had measured an eltek with spikes over its rated continuous load with no appreciable drop in output voltage. Hence my optimism about their capabilities.
These SMPS units are available in the US as well. I like the fact that they are universal voltage.
How loud are the fans? Did you replace them with low noise fans?
How did you make connection for AC and DC? It looks like there are just some socket type connectors on the rear for plugging into some sort of bus.
EDIT: OK, I have identified a couple of Ebay sellers of plug in PCB boards for the connectors. Nice!
What about the DC voltage? How is that adjusted other than plugging it into a "CAN bus" and using a bus based controller unit? I could not find any info on that... Otherwise I think the DC voltage will be 53.5V, and that is too high for the TPA3255 modules I think...
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I have been purchasing MeanWell SMPS units from the UHP line. They are fanless. To achieve the maximum Wattage rating of the unit you need to attach them to the case/chassis, however, audio/music reproduction has a significant crest factor so this is not really necessary in practice.
There are examples of these on Ebay, such as UHP-500-48 and UHP-1000-48 that are available right now and have adjustable DC output voltage. There are higher power units up to IIRC 2500W but as soon as you exceed the 1kVA level they get expensive fast.
I strongly prefer a fanless SMPS over a commercial one like the Eltek that has a noisy fan.
There are examples of these on Ebay, such as UHP-500-48 and UHP-1000-48 that are available right now and have adjustable DC output voltage. There are higher power units up to IIRC 2500W but as soon as you exceed the 1kVA level they get expensive fast.
I strongly prefer a fanless SMPS over a commercial one like the Eltek that has a noisy fan.
Yep, the SMPS has a little blue (normally, but not always) adjuster screw on the side oust adjust down to your desired voltage, Normally can reduce by 10 volts, if you need more just use a adequately rated DC voltage reducer, simple.
Cheers
Cheers
I like the idea of using the Eltek Flatpack2.
Nice, heavy duty industrial look. Bargain pricing.
Kicad files for the PCB adapter at GitHub.
Needs a CANBUS controller to set the voltage. Not sure how to do this. ESP32 cantroller . CAN bus module and Arduino. Oh.
Am I on the right track? Any other ways to program voltage?
Any way to use my Bluetooth OBD II scanner to program the voltage?
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