Today I finished my 2 new high frequency amps (3rd one hopefully tomorrow) for the k402MEHs...EXCEPT for the LED for displaying status. This part might rake a while as I need to test out a dc stepdown converter tonsee if it will do what I want. What Inam planning on doing is running it off of the IcePower aux power supply which is 24v unregulated. The downconverter is supposed to be able to do this "
Maintain stable output voltage and limit the output current over a range of input voltages. Great for general voltage conversion, battery charging, powering raw LEDs, automotive electronics, battery conversions, micro-controllers, and electronic projects.
Input Voltage: 8-36V DC, Output Voltage: 1.25-32V DC, Max Load: 75W/5A Peak, 50W/3.5A Sustained (whichever is lower, amps or watts)
Conversion Efficiency: Up to 95%, (our test result: 24V->12V1A: 92.7%)
Dimensions: 51x26.3x14mm, XL4015 IC, 180KHz Switching Frequency
Input must be at least 1V more than the output voltage. Applying reverse polarity voltage to the input or output may damage the module. Current limiting function requires at least 5.6V input.
This module combines the high efficiency XMLSEMI XL4015 DC-DC buck converter IC with a TI LM358 Op-Amp for stable current regulation. Now I am not sure what they mean by a capacitive load...would the down converter be one? I am only going to be powering 1 LED by each downcoverter and a resistor.
Yesterday rewired 2 of the 3 MEHs for 1 amp per woofer instead of 1 for 2 woofers. Because of the impedance of the woofers I was only capable of 125w per woofer, and now I will have 450w per woofer...pure overkill, but should help for dynamics.
I purchased the cases off Ebay, and then had a friend machine it so I could complete the amps. I then finished off the amps. I know the work is not as nice as what others here have done, but I am still a beginner in DIY, and due to my health I cannot do some work and must farm it out. To do the soldering I used a mask, and I hope that is enough to protect my lungs.
Next I will be completing the rewire of the AmpCamp amps, and starting to assemble the mini MEHS, and finish the valance for the curtains.