Need help - DIY/KIT alternative for QSC RMX1850HD - not for Audio! - diyAudio
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Old 22nd February 2015, 05:43 PM   #1
diyAudio Member
Join Date: Feb 2015
Default Need help - DIY/KIT alternative for QSC RMX1850HD - not for Audio!

Hi diyAudio folk!

I read your forum and found that you have a lot of knowledgeable people here!
I think that this is best place to ask help for problem which I cant solve without knowledgeable people support !

RMX1850HD Power Amplifier ? QSC, Class H
I need alternative for QSC RMX1850HD at reasonable cost (diy, kit, pcb etc). Alternative for power and signal quality. This is NOT for audio use! It is used to build Doug Coil machine for healing Lyme disease (experimental).

More about this machine here (slide6):

Here is machine in action:

In this scenario QSC RMX1850HD is deFacto Nr1 selection. But in Europe it is rare amp and expensive, used for EUR500+. Not everybody may afford it, because without AMP we need to buy/build a lot of different equipment too.

I have found some, not to expensive Chinese options, but not sure are they ok or not.
Maybe these are APEX clones, I really don't know.
Please check them, and say your opinion!

YJ +/ 80VDC TTA1943+TTC5200 +2SA940 + 2SC2073 1.0 channel Power stage amplifier board 1000W-in Amplifier from Consumer Electronics on | Alibaba Group

Cheapest Assembled high power 1200W mono power amplifier board HiFi Board kit Electronic kit combination Amplifier-in Amplifier from Consumer Electronics on | Alibaba Group

Free shipping ,1pair PR 800 Group A professional stage amplifier finished board 1000W super power-in Other Electronic Components from Electronic Components & Supplies on | Alibaba Group

Any suggestions? (more power is ok, not less)

Thanks in advance,
p.s. sorry for my poor English, but I hope you understand me :-)
p.s.2. Just in case - I know how to solder, how to use multimeter and oscilloscope and I know that AMP at this power is not easy task for DIY!!! But my knowledge is far away from right selection in this case!!!
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Old 23rd February 2015, 12:47 PM   #2
baga is offline baga  Romania
diyAudio Member
Join Date: May 2005
It is better to post how much power do you need, impedance of the load , frequency band , continuous or intermittent operation and other requirements for this machine

Last edited by baga; 23rd February 2015 at 12:49 PM.
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Old 23rd February 2015, 01:34 PM   #3
diyAudio Member
Join Date: Dec 2003
Location: Randers, Denmark
Here is a finished amp (difficult to make cheaper youself)

the t.amp E800 - Thomann UK
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Old 23rd February 2015, 03:38 PM   #4
diyAudio Member
Join Date: Feb 2015

As i understood, better way is to find used professional AMP instead to DIY.
Now I am querying ebay :-)

power do you need: 750W
impedance of the load: ???
frequency band: 200-2200hz
continuous or intermittent operation: continuous up to 1 hour.

Of course I am not fighting for every penny, 200-300EUR is ok for working solution!!!
Thanks for link!
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Old 23rd February 2015, 11:50 PM   #5
diyAudio Member
Join Date: Dec 2005
Location: silang, cavite
Send a message via Yahoo to audiomachines
2120 Gradient Amplifier for medical and industrial use
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