How low do these go 20hz? Also what db are they at when hitting 25hz
224929
Don't know. Not a techie. Just know I love these speakers at any volume low or high. Best speakers I ever owned
224930
Freq rsp goes to 30Hz, so "no" to the first question, and practically silent to the 2nd question.
1796206
They do sound good, I don't use them is a low hertz application, I use them as Mids/Highs.
1748923
Not the 250 ohm. If you want to use them with a phone, I'd suggest the 32 Ohm version; get the Limited Edition if you can find them, they are nice. But if you are using a phone as your primary source, and want something on par SQ wise and more portable, check out the Sennheiser HD25 or Amperior. Both are more easily driven, and more portable too, with a similar V-shaped response to the DT770. Their sound is less spacious, but I prefer them to the DT770 when both are driven by my Nexus 4 (same chipset as your optimus G).
1701725
I do not have them hooked up as midrange so can only answer for the low end. These speakers really perform well in a ported box with a great sound for inside the car. It will not travel far outside the vehicle, and if not careful can clip. With the right settings as long as you are going for a good crisp mix, these work well. If you are looking for something that is going to push a lot of air for bass that you feel inside a building, these will not do it. I built the box myself for a single GTO804 following the specs on the sheet and used a shop vac tube as the bass port. The potential is found more in the ported than in a sealed box imo.
1051116
I received the QC 25's last week, wore them twice and I'm sending them back. Had the same ear pressure issue and that is why I'm looking at the 20i's.
932490
It all depends on the setup you want. The speakers (kenwood) pass 20hz to 22,000 i think.. Meaning they output bass but, not bass as boom boom. I tried them without the extra bass and they're good. It all depends on what you want. What do you want?
1570376
I'm not sure of the specs of that amp but I can tell you the low end absolutely sucks at 20 RMS. Loose, muddy and by my ears sound like cheap paper blowing in the wind. However, I still used them after placing a crossover in line for highs only. Clean tweeter With little ear fatuge. If I may recommend two alternatives...Infinity kappa are a well rounded speaker design and my first choice for balanced sound reproduction. If you like a little more tight bass Pyle has some great two ways. I hope that helps, but your ears are your best guide.
2201198
They form a pretty good seal. I would put their passive noise reduction at somewhere around 20 dB.
105924
I dont know what kind of amp others are using but these speakers DO NOT need a sub. They are good down to 30hz.But yes, if you want anything lower than that, than yes, you will need a sub.
19554
If I remember correctly they are around 25db. (About the same as ear plugs)That's assuming that you have a snug fit.
671474
I've heard it ranges from 15Hz to 28kHz. I would recommend a headphone amplifier if you want to enhance the lows. They are definitely comfortable and provide pretty good passive sound cancellation.
1054944
Hey. I really wish I could help you but I have no idea on an ACCURATE frequency range. I remember reading some stuff when I bought them, but that was only what the company or Amazon claimed about them. I don't know if there's a way to measure, but I don't have any tools for that kind of thing.
752659
20 db at 2 feet ... short answer buy it. You will be fine. Wife is happy ..
1491450
active noise attenuation = 18db @ 150 hz. sensitivity 112 db @ 3db. driver unit = 40mm.If your thinking of buying these get them. I bought 3 sets. 1 for @ home, 1 for @ work, & a spare just in case. I have bought many noise canselling & amp. headphonews, NOTHING ever came close to these...BEST head phones on the market..
361542
one with similiar sized woofer and tweeter and goes down to 60 or 70 hz.Drop off usually occurs 10 hz before the stated low and in mho need a center that goes down to a minimum of 80 hz.Bummer price went back up day before i could order these,grr
1823397
You can find the specs on these at Shures web site, but I think the SE 315's run at 27 hertz.
1977124
They have a low impedence of 32 ohms but have a sensitivity of 99db which is around 4db less than usual (which is huge in difference in db). If you listen loud, this isn't your headphone.