KEF KC62 vs KF92. Compact Subwoofer Comparison.

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Erin's Audio Corner

Күн бұрын

Пікірлер: 72

@roccobruno8027 Жыл бұрын

It's so nice to have a thorough and analytical comparison between these two subs.

@JoshM7 Жыл бұрын

Thanks for these videos Erin! I'm mostly DIY for subs but I can't get enough of your videos. (Both these sub reviews and all the other videos even if I don't interact here much) I know the distortion at 20Hz is mostly 2nd order. But I couldn't live with that level of distortion especially at that frequency. I know I lose a good bit of sensitivity under 30Hz but can still hear 20Hz decently well. But 2nd order distortion at 20Hz would be 40Hz, and I'm not insensitive to 40Hz like I am at 20Hz.

@ErinsAudioCorner Жыл бұрын

Thank you for the kind words!

@StCreed 5 ай бұрын

But at 40 Hz you'd need about 20-30% distortion to even start hearing it, isn't it?

@JoshM7 5 ай бұрын

@@StCreed 20-30% would make it unlistenable. At any frequency. Even 10% gets hard to tolerate for me unless I have other areas masking it. I like my bass to not be above 2% max for distortion in home. And in my car I let it get away with a bit higher but not much past 5%.

@Svensenmann Жыл бұрын

Greetings from Germany. I love your work and your character is great/epic. Your videos have often helped me. I bought the KC62 blindly because the technology is impressive, unfortunately, it was ultimately too quiet even on my desktop. Im demanding a lot of bass for gaming. Happy right now with Neumann KH 120 II + KH 750, little bit more oomph and automatic calibration makes everything easy. its double the size but still super small visually, same size as kf92

@BlackHawkPSU Жыл бұрын

It sounds to me like a sub location issue. You needed to find the right location for the sub.

@Svensenmann Жыл бұрын

Could be, but im also super curious how important time and phase alignment in subwoofer + Mains is. The neumann subwoofer and speaker can time themself automaticly. Dont know how important that is

@Shishiku91 9 ай бұрын

I’ve had the Kef R400b which was the predecessor to the 92. Thing is still a beast 6 years later & working well with my original LS50W’s

@tee-jaythestereo-bargainph2120 Жыл бұрын

Dude puts some serious research into his videos and subjective love the enthusiasm personally not a big fan of measurements because room matters alot of course but awesome channel and Thank you !!

@iandudley5175 Жыл бұрын

I had the kc62 but we got the 92 at our store for demo and I swapped. The kf92 will walk all over kc at every opportunity. Even in smaller rooms just tweak some settings!

@macmovieman1 Жыл бұрын

Just placed an order for the KEF LS50 Wireless 2 speakers and your data suggested that the KF92 sub would likely be a better pairing for me in my office. It’s only a 12‘ x 12‘ room but I am confident that this should be a good companion to the speakers. I also got the wireless thing that goes on the sub that supposed to help you position it better but in all honesty, I have no idea what it does, but it’s coming. I picked up some desk stands from a company called ion Forge and I can’t wait to get this all set up next week or the week after when it arrives

@ErinsAudioCorner Жыл бұрын

Let us know how you like em!

@sethwilliams6203 Жыл бұрын

any update on the subwoofer?

@macmovieman1 Жыл бұрын

@@sethwilliams6203 Its working like a charm and Im still playing with placement but its so much easier with the KW1 on the sub. The newer version of the software is also so much better with the HDMI cable that was unuseable. I now listen to most of my music through my earc with Apple Music and the settings at their highest. Very happy.

@Zimmy_1981 2 ай бұрын

No lag from wireless use? Or interference at all?

@sudd3660 Жыл бұрын

6db difference is huge i think below 30hz, perhaps even higher, should be easy to test but when it is loud enough to create a physical impact it should be three times as impactful, but only sound 50% louder. that is why the lower the frequency the closer 3db is to doubling the effect.

@bobb7134 Жыл бұрын

Thanks for all the work to test these subs. Since most people will cross these at 80hz, could you also run frequency response tests with an 80hz low pass using the setting on the woofer? This will give us a better FR graph as it will likely be used and it will show us how accurate the settings are compared to the actual FR. Thanks.

@danielezzet8870 Жыл бұрын

Room mode kind of applies a low pass filter around 100 hz and the spl around 20-30 hz seems to be the same between room mode and LFE mode in both subwoofers, though I wonder how much the distortion change.

@avnut5517 Жыл бұрын

The distortion differences are a big surprise. Thank you for diving into the root causes. Very interesting.

@Telecraster 7 ай бұрын

I work in the pro-audio/PA realm, and looking at the max dbSPL graphs makes me wish I had the luxury of those low SPLs sometimes to make hitting the required frequency range numbers easier by an order of magnitude or three. :P

@Nick_4i Жыл бұрын

I probably wouldn't ever buy a kc62, but I see the value in it. It really is tiny, and it looks super cool. I don't really see the value in the kf92. Its way bigger than I expected it to be and it doesn't really look any better than most of SVS's or Rythmik's gloss black subs. It seems hard to justify when something like an sb1000 pro is only $700 and is only slightly bigger.

@telim5848 Жыл бұрын

Any chance you'd be able to get a hold of the Dynaudio Sub 6 for review? That's also a dual opposed subwoofer with 9.45" drivers. Very curious how they stack up to these since Dynaudio rates them down to 16 Hz.

@leoklaes1573 Ай бұрын

Thanks for another excellent comparison! Would you please consider comparing the kc62 and SVS 3000 micro? I think that would be quite interesting.

@Novilicious Жыл бұрын

Can you please review REL subs? I want to see if they’re used of analog filters is truly faster and better than using DSP. Also would love to get your thoughts on high level vs low level inputs. Thanks!

@ErinsAudioCorner Жыл бұрын

I’ve tried. I can’t get them to return an email. I’m considering buying one myself to review, but they’re not cheap.

@fransdoolaar3975 Жыл бұрын

@@ErinsAudioCorner Can you please review the Arendal 1723 1S subwoofer? They are delivered direct with a 60 day audition period after which they can be returned. The 1S (S for sealed) is smaller in size than the 1V (vented) which comes with a plug for the venting port.

@bokramubokramu8834 Жыл бұрын

@@ErinsAudioCornerwell buy one online and then return it after you're done. And dont tell anyone

@ravington666 10 ай бұрын

Great detailed review. I would kindly like to request a review on the Bowers & Wilkins DB3D, another compact dual opposing subwoofer. I think the SPL results in comparison to both the KEFs would be really interesteing.

@FOH3663 Жыл бұрын

Its worth noting vessel gains and boundary support are kind to the LF fundamental, ... elevating the fundamental at a higher rate than it's harmonic products above. I suspect it's somewhat of a push however, as per the equal loudness contours impact. Keep bringing the heat ... solid work.

@kurtzcol Жыл бұрын

dont send the 62 back to kef send it to me to try out for a few years thanks

@mothertoad560 Жыл бұрын

After spending a huge amount of money on my ls50 wireless 2 the best sub to match was the relT7x .. it's perfect 😃

@ACM1000000PT Жыл бұрын

Yeah pretty much a subwoofer that cannot do sub frequencies, cant be easier?

@idray986 Жыл бұрын

While you are on the call or email with Kef to return them, Can you request the reference 5 or reference 8b?

@nickmay9430 9 ай бұрын

Kc62 for your room you sleep in and kf92 in the living room/theater room

@zefrog7482 Жыл бұрын

The claim of extension to 11Hz on either is extremely disingenuous, was obvious that would be the case, but still. Bit of a stain against KEF really as usually they are pretty honest and don't fall into the trap of wild claims.🤦

@Bradimus1 Жыл бұрын

If you drop them down a long staircase - 11hz.

@zefrog7482 Жыл бұрын

@@Bradimus1 🤣🤣

@conduit242 11 ай бұрын

It’s flat out false advertising and they are asking for a lawsuit

@aeisbaer8042 10 ай бұрын

@@conduit242hm I dont think so since its not specified at which volume it reaches 11Hz. And looking at their white paper, the expected in room response has the -3 dB point at 11Hz (not anechoic respinse) when at even moserate listening levels (90 dB)

@Audio_Simon Жыл бұрын

The KF92 has a change in group delay around 60Hz-90Hz as you said. There is also a droop in the frequency response there. If we EQ the response flat, would the group delay also become flat(er)? Similar on the low end where group delay quickly rises and appears to corresponds to the roll-off in the frequency response.

@ErinsAudioCorner Жыл бұрын

I don’t know for certain but I’d expect if you do any DSP work then the delay would appear there. If you added DSP to make it flat, would it increase the GD? If so, would you want to use DSP to flatten above that (in the 60-90Hz region) to increase the GD so it matches the delay below 60Hz? IOW, I have no idea. 😂

@WWeiss-nv5vz Жыл бұрын

I've found putting the SVS Micro3000 nearfield next to my listening position makes up for the loss of power compared to a larger model. Any downsides of nearfield sub listening? Maybe a good subject for a future video?

@commanderrussels2612 Жыл бұрын

I had some really good results in a dual subwoofer setup having one nearfield and the other in a corner. The corner one did better in the low frequencies and the one near me was better for 45Hz-90Hz. Combined with a MiniDSP I was able to get some really nice response.

@kobymile5453 Жыл бұрын

I wonder why the KC62 is not designed to retain a more linear output in the lower frequency range at the lower volume when it can do that at higher volumes.

@isak6626 Жыл бұрын

Great comparison. I'm very curious as how these compare to larger single driver subs. The total cone area is quite large on these, but how does that play out?

@tao6295 11 ай бұрын

Hi Erin, do you think the kf92 is comparable to SVS SB 2000 pro ?

@adsph Жыл бұрын

A well detailed look. Appreciate that. Thank you.

@ErinsAudioCorner Жыл бұрын

Glad it was helpful!

@Stardust72707 8 ай бұрын

Could you please tell me whether KC 62, KF 92 or Kube 12b will compliment a R11 Meta setup? It’s a 17x15 feet room and I’ll be about 13-14 feet away from the unit. Thank you!

@michael-4k4000 Жыл бұрын

Excellent video!

@ErinsAudioCorner Жыл бұрын

Thank you very much!

@monotoshmitra 8 ай бұрын

Hi Erin thanks for excellent comparison with the detail statistics, i m little confused, i have a small room 10x12 ft with 9 ft cealing already have two rel t5xs for music, want to add subs for movies hence t5xs not producing enough spl or effect during movies its excellent for music though, my room is small if i go with two kc62s i can place them to side walls or should i go with only one kc92. Please if you can guide a bit .. thanks you.

@rohankakar2644 Жыл бұрын

I'm confused if I should buy one KF92 or 2 pieces of Kube12b. I mainly listen to music in a large room and will pair the sub with Kef R5 and Kef R2c. What are your thoughts? thanks Erin.

@alexvikendi1768 Жыл бұрын

What did you choose? Same thing but with kef cube 8 or kef kc62 because the price difference is quite a gap... Also I noticed for music, you don't need crazy drivers size.. 8inch or 10inch would be my maximum, power and speed of the driver and high power) is way more important imho I have a svs 1000w.... Doesn't work for music because of the size of the driver and hard to pair in a lively living room

@rohankakar2644 Жыл бұрын

@@alexvikendi1768 I found a local retailer who lent me the kubes and kf92 to try. Hands down adding 2 subs gives a much balanced and punchier bass. Unless you are putting this in an enclosed room I’d 101% go with 2 subs. Good luck with the setup!

@alexvikendi1768 Жыл бұрын

@@rohankakar2644 glad you found out =) but completely outside my budget 😅 I'm gonna keep looking, but I'm hesitant to switch unfortunately in passive , given juste the price of one kc62.

@91DivineAngel 8 ай бұрын

I have both, the kube 12 is much better. It has more output and dies as low but can hold it even at high volume where the kf92 stops

@gustoaudio8711 9 ай бұрын

In a medium-large room, mainly music, one KC92 or dual KC62 better?

@StCreed 5 ай бұрын

Alpha audio recommends going with 2 subs whenever you can. This reduces room issues. It should still give the same output volume, but perhaps not the same low end.

@rameshjeyaprakash315 Жыл бұрын

Hi Erin, My room is 30 sqm. I have a Klipsch Reference Premier 7.1.2 setup. Am looking for second sub woofer. I listen to music and watch movies. Between these two which one would you recommend?