Hi,
Just wondering if anyone has used plate amps from Getshow on aliexpress?
Ie something like this -
https://a.aliexpress.com/_mLQ6vro
I wouldn't believe the power rating but they seem very cheap for the features. They seem to have quite a range of products so the company must be a reasonable size but couldn't seem to find any reviews online.
I need a sub for small PA use, usually hire a 15" Mackie swa1501, or sometimes an ev 18" for larger gigs so don't need a huge amount of power. Thinking of going DIY so if this does even 600wrms I'd be happy.
I could do a stand alone amp but then I either have to buy a crossover as well or get one with dsp which then is more $$.
Thanks
Just wondering if anyone has used plate amps from Getshow on aliexpress?
Ie something like this -
https://a.aliexpress.com/_mLQ6vro
I wouldn't believe the power rating but they seem very cheap for the features. They seem to have quite a range of products so the company must be a reasonable size but couldn't seem to find any reviews online.
I need a sub for small PA use, usually hire a 15" Mackie swa1501, or sometimes an ev 18" for larger gigs so don't need a huge amount of power. Thinking of going DIY so if this does even 600wrms I'd be happy.
I could do a stand alone amp but then I either have to buy a crossover as well or get one with dsp which then is more $$.
Thanks
the DSP seems to be the same as the Sanway amplifiers:
https://www.china-sanway.com/D1-Series-pl89020.html
https://www.china-sanway.com/D1-Series-pl89020.html
I know this is probably a bit late, but I was able to get a hold of 2 versions for a sub build myself.
I've run a test on the dual channel version here: https://www.aliexpress.com/item/100....order_list.order_list_main.17.2afc18022NN5qc
And I was getting 900watt at 60hz, with peaks of up to 1100~ so I think the 1200w at 1khz is probably not too far off, as seen below. I was barely able to take a picture, before my dummy load started to almost melted. Need to get a larger one for these amps haha! This was testing only a single channel of the 2 pairs possible.
Tested with 8ohm dummy load, measured at 88.7 vRMS, here soft clipping started to occur, clean sinewave at 79vRMS or 700watt~
I've run a test on the dual channel version here: https://www.aliexpress.com/item/100....order_list.order_list_main.17.2afc18022NN5qc
And I was getting 900watt at 60hz, with peaks of up to 1100~ so I think the 1200w at 1khz is probably not too far off, as seen below. I was barely able to take a picture, before my dummy load started to almost melted. Need to get a larger one for these amps haha! This was testing only a single channel of the 2 pairs possible.
Tested with 8ohm dummy load, measured at 88.7 vRMS, here soft clipping started to occur, clean sinewave at 79vRMS or 700watt~
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The second one is a single output unit: https://www.aliexpress.com/item/400...o.order_list.order_list_main.5.29741802mUpLPl
Its said to output 1600w, I was able to get 576w RMS at 71,2v, but peaks relatively clean between 1180watt and 1300watt, these was done at full gain, 2v input voltage and pushed until soft clipping. The waves was 60 cycles, so I would say plenty for a good kick drum sound, and roughly 50ms between peak waves.
I cant say for sure in the real world of course, but for the price I think it does deliver quite well. I will be using the 2 single outputs for 2 single 18" cabinets with a Rockville 1800w 8 ohm speaker.
Its said to output 1600w, I was able to get 576w RMS at 71,2v, but peaks relatively clean between 1180watt and 1300watt, these was done at full gain, 2v input voltage and pushed until soft clipping. The waves was 60 cycles, so I would say plenty for a good kick drum sound, and roughly 50ms between peak waves.
I cant say for sure in the real world of course, but for the price I think it does deliver quite well. I will be using the 2 single outputs for 2 single 18" cabinets with a Rockville 1800w 8 ohm speaker.
An electronic limiter is preventing more power for sine wave?
they look good value. Whats the maximum delay value on this DSP platform?
they look good value. Whats the maximum delay value on this DSP platform?
Yeah, it seems like its capping itself into a soft clip, but it has quite nice peaks.
I've not been able to get the DSP section to work yet, I cannot find the recommended software or get coms to work yet. Still working on that
I've not been able to get the DSP section to work yet, I cannot find the recommended software or get coms to work yet. Still working on that
Message the seller via AliExpress, I have not dealt with these guys but the sellers for lighting products I have purchased have been very responsive and helpful.
What is the lowest HP you can have? Is it possible to have no HP?
Some of these amps have a 20Hz HP no matter what, so just wondering what's the case for these things.
@kipman725 and what about the Sanway amps, possibility for lower than 20Hz filters?
And what about network control?
Some of these amps have a 20Hz HP no matter what, so just wondering what's the case for these things.
@kipman725 and what about the Sanway amps, possibility for lower than 20Hz filters?
And what about network control?
Not sure going below 20Hz will meet any useful purpose.
I am somewhat worried that the fan and ventilation system only works with and recycles air inside the cabinet, no outside vents at all.
Alone on a bench or relatively short term, no big deal ; now on all night sessions, not so sure of it.
Remember a 600W speaker will turn at least 550W into raw heat, heating magnet and frame ... a lot of heat which remains inside the enclosure too.
A guy in Argentina used to make "Unix" brand rack mount power amps.
Big internal heatsinks. a bottom mounted fan ... and NO air exit holes anywhere.
Maybe he thought "cooler fans" had some magical "cooling" property by their mere presence 🙄
I am somewhat worried that the fan and ventilation system only works with and recycles air inside the cabinet, no outside vents at all.
Alone on a bench or relatively short term, no big deal ; now on all night sessions, not so sure of it.
Remember a 600W speaker will turn at least 550W into raw heat, heating magnet and frame ... a lot of heat which remains inside the enclosure too.
A guy in Argentina used to make "Unix" brand rack mount power amps.
Big internal heatsinks. a bottom mounted fan ... and NO air exit holes anywhere.
Maybe he thought "cooler fans" had some magical "cooling" property by their mere presence 🙄
As far as I was able to test it doesn’t have any default dsp and will run everything. But as already mentioned maybe 20hz is not really something most can hear?
Cooling so far I have not considered, but I think it’s very common for these types of plate amps?
It was not a matter of hearing the frequencies below 20Hz, more that the filters affect group delay and the DSP I am currently using seems to have a fixed 20Hz HP. Looking for options.
I only need about 150W per driver + headroom.
I pushed 20hz through it, and it does not apply any DSP unless configured to do so at that range, as far as I can tell. They also offer some other ones, that has a split between a tweeter and woofer.
Seems they are not available on Aliexpress anymore.
I´m looking for a two channel fanless dsp plate amp with 300-600W 8Ohm per channel for an 2 way 12/1,4" top.
I have one side only space for 150mm/6", so there are not much available.
I bought used set from adamark a year ago, but can´t get the AllDSP software to find the DSP, it seems to be branded.
I´m looking for a two channel fanless dsp plate amp with 300-600W 8Ohm per channel for an 2 way 12/1,4" top.
I have one side only space for 150mm/6", so there are not much available.
I bought used set from adamark a year ago, but can´t get the AllDSP software to find the DSP, it seems to be branded.
Not sure what you mean about that, I can find them easily, and the link from post #4 still seems to work fine.