Great job. I had asked about checking frequency roll off and here you did it! The amp appears to be a winner! In car audio amps are usually tested for power at 40 hz and 1khz. I’d be interested to see how it does at those frequencies. Looking forward to the full review on the new amp meter you got. Be cool to see how it compares to the kaiweets. I just got in the fluke 107. Not a bad meter for being a Chinese fluke.
Thanks for that great feedback! I need to finish this amp so videos will come fast;) I purchased a Chinese Fluke hoping it was great - since they saved the money in manufacturing! But I am so disappointed!! I don’t know if I should rant or be nice and just review it?
@@KissAnalog Be honest but It is a Chinese Fluke after all. I kinda knew it wasn't going to be a 87 series. I lowered my expectations and for a hobbyist meter it is ok.
Eddie, love your channel! I wanted to follow up on your previous Micsig Cp2100B vs Fluke Current probe video months back. What would you need a 2.5MHz bandwith (vs. 800kHz for the lower cost version) capability for in a current probe that could justify the cost? My Siglent scope does not have an 'amps' setting for the probe - is that just an in head calculation for the units? Thanks for all your great content! -GDC
Following are specifications for the amps we used to use on our system...eight of these did the bottom end (requiring a substation to run them!) ESS 500 Power Amp Specifications *Power output: 250 watts per channel from 20-20,000 Hz both channels driven into 8 ohms (Typical >300W per channel into 8 ohms) *Frequency response: 20Hz to 20kHz +/- 0.05 dB 20-20,000 Hz @ 1W +/- 0.50 dB 5-100,000 Hz @ 1W +/- 1.00 dB 3-150,000 Hz @ 1W *Total harmonic distortion: < 0.1% (20-20,000 Hz up to rated output) *Hum and Noise: 100 bB below rated output *Damping factor: 1000:1 @ 20Hz *Square wave rise time: < 1.7 microseconds *Phase shift: 10 degrees leading @ 20 Hz 10 degrees lagging @ 20,000 Hz *Input sensitivity: 1.75V input for rated output *Signal to noise ratio: 100dB *Speaker load impedance: 4Ω (minimum) *Dimensions: 423 x 152 x 381mm (16 5/8" x 6" X 15") *Weight: about 60 lbs These were brutish and flat from dc to daylight and coupled with 15" bass drivers in quad cabinets could move some air! Think of the weight (and power) savings that could be realized using a Class D of the sort being tested here!
Wow!! That is impressive! Thank you for sharing that;) It is educational just to read specs I think. You are right of course - the new Class D amps are so effective plus have much better power factor! It would probably take near half the input power with Class D!
