Regarding imput Impedance of 47k ohms: What does the 220 "pF" mean, and is a higher number better or worse than a lower pF number such as 100pF.
340289
The 220pF [pico Farad] refers to filter capacitors in the input circuit of the amplifier. Farad is the unit, pico I believe is 10 to the minus 9. They filter out noise and stabilize the circuit. 220 vs 100 performance would depend on someone's ears. The amp is nice
2161311
This is a case of Marantz trying to appeal to the " more power" part of the world. A more careful read of this spec shows this rating was measured at 6 ohms @ 1KHz. Not your "typical" measurement. At a more realistic power rating, the THD would read considerably less. Figure at 8 ohms it will be under 1%. Paired with a quality & efficient pair of bookshelf speakers & you have a very nice sounding system. I have found it to be very smooth and it has plenty of power to fill the space I'm using it in.
1151384
I am running a 2200 watt amp at 4 ohm load, and I haven't had the least amount of a problem. I did a ton of research before I bought this kit, and the only thing that I would suggest is that if the amp you are hooking up has fuse of 80 or above to go to their 0 gauge kit, otherwise, you will be fine. You won't find a nicer kit than this! Worth every penny and superfast shipping
1721395
The manual , unfortunately is written in Chinglish, and they are probably referring to a much higher frequency, and this stateme t made it past the spell checkers & context checkers. Otherwise the other answers proffered for this are certainly valid, referringto 50Hz, AC Line interference & aliasing, from domestic Japanese , Chinese, & UK sources of 50 Hz power & frequency deviation..
2185946
120 db as per spec. That probably tells you nothing. What I CAN tell you is that it works fine. Nice loudness.
1546501
16 ohms impedance. As for it's sensitivity, it is more sensitive than my Klipsch earspeakers. So I can "lower" the volume settings on my mp3 player using the Final Audio Adagio III. If you do purchase them, do not go by the initial listening. I was disappointed because they sounded no better nor worse that the Klipsch I already had. But as they broke in, I can not go back to the Klipsch. It produces powerful deep real bass, where you can almost feel it and certainly can distinguish between the bass notes. The mid range is wonderful and the highs, all present with a delicate touch. Depending on how your ears are shaped will really determine the sound you get in your ears. But I love these and am happy to have them. They come highly rated in the audio press too.
1993295
301 is up to 150 watt power while 201 is 120, up to an inch size bigger which reflects bigger speaker has more power , sound quality almost the same as they made as balanced speakers which means no equalizer needed to produce the best sound, 301 can handle lows better than 201, but with the aid of subwoofer, never notice the difference. Either one of them are made to produce the best sound ever compare to other brand.
388162
I have the PF60 and just ordered a second one. The reason I ordered the second one because 2 ch music sound clean and clear. My wife can tell the different but she likes the sound w/o the pf60 :). The PF60 has 2 dedicated high current output for amp and receiver.
605676
Yes.. about 40 - 45 ohms, give or take a little. Exact number is not real important as long as it is over 35 and under 60. Numbers outside that range would indicate something is really wrong with that element. Resistance within that range will work, just maybe not perfectly.
1319686
50 ohms - I actually measured it with an impedance analyzer... very close to 50 ohms non reactive.
1523527
Manufacturers website says 120volts/470watts. No amp info. Sounds perfect for my Semi with 1000watt inverter and limited space. Gotta get me one.
1268330
Speaker impedance limits are really determined by your amplifier / receiver. The switch should not care whether your speakers are 4, 6, or 8 ohms. However, you may notice, if mixing speakers with different impedances, that when played simultaneously, one pair is louder than the other.
2063459
So the resistance (Ohms of the headphones) tells you how easy it is to drive the speakers (produce sound). A higher ohms indicates that it is harder to drive the speakers; that being said that higher ohms means that the sound quality is better because there is less garbling of the signal. 30 ohms is standard and is appropriate for basically anything (mp3 players included) the 80 ohm can work with mp3 players but should have a amplifier, the 250 basically is useless without a good amp... if you want to get an amplifier I recommend the Fiio E11 portable amp (approximately 70 USD). Even if you get the 30 ohms DT 770 I am sure you will like it; I recommend getting an amp and higher "ohmage" if you want your music to sound just a bit nicer
236962
50 Watts Peak Power Handling; 25 Watts RMS Power Impedance 4 ohms Frequency Response - 100Hz-18kHz Polypropylene Cone Material Mounting Depth - 1.7-Inch
313860
100 watt and up could be a little strong. I'd say 75 watts would be a good match and that's at 4 ohms.
185437
resistance is 400, 4k,40k, 400k, 4m, 40m, ranges in capacitance is 40nf, 400nf, 4uf, 40uf, 400uf, 4mf, 40mf, frequencies i do not know, good luck, best multimeter we ever own,
534981
i have one installed at 1000W@1ohm and it is incredibly loud without rattling my interior, and hits everywhere. the pressure is too much behind the ears sometimes. Adjusted the LPF filter to be lower and now I get all the vibration w none of the pressure in my head.