What you are suggesting is a compromise and one that I am not willing to make. This is EXACTLY what I did and the LS50s are anemic, in my treated room, when properly placed, below 80Hz. The idea that they're only for home theaters is a sad misnomer. remo grandoriNew Member I have a velodyne dd15 conectedbto my kef ls50. Press J to jump to the feed. Even though the thread is in german I think you can get most of the important info from the pictures linked there. The signal will get attenuated to -6dB for both at the crossover point. i have recently bought new system, but still the same type, bookshelf size speakers and a sub. The normal LS50’s are -12dB @ 40Hz anechoic, so maybe ~35Hz in-room. Did you feel like this setup muddied the low end? It depends on which bass mode you are in. I would like to know if KEF LS 50 owners are using a sub woofer in their setups and if so, what brand/model are you using and at what crossover frequency ? However, I like doing the -3dB, as a crossover isn’t a hard cut and most speakers are not sealed, so they fall off fast. The -3dB frequency is the frequency you want to use when setting your subwoofer crossover – in the case of the LS50 that would be 79Hz. For every single step of the way from the storage device (hard drive, CD, vinyl) through the cables, connectors, copper runs, DACs, pre-amps, tone filters and equalizers (just say no! Hi Jeffey it is the baby of the range (8" driver), however, it shares the same beautiful clarity of sound that is a hallmark of the KEF's. The normal LS50’s are -12dB @ 40Hz anechoic, so maybe ~35Hz in-room. http://sumikoaudio.net/rel/idx_products.htm, Forum Policies, Rules, and Terms of Service. I used an SB2000 with passive LS50s. That seems like an amazing piece of tech and would take the pain out of something that sometimes is the most difficult part of a new set up; the blending of LR and an lfe source. i had 100hz falloff on sub on small speakers and now running 60hz since the midbass on the new speakers was much bigger. Best Match Time: ending soonest Time: newly listed Price + Shipping: ... KEF LS50 Speakers - cross-over full upgrade service ( EACH) (CROSSOVERS ONLY) New (Other) ... New Listing PR KEF SP1004 3 Way Crossovers, UK, Ex Quality/Sound, with Wires/Speakers Jacks. Anyone have any idea where I should set the crossover / gain / volume of the sub? … Wow, the LS50 has an auto detecting crossover?! I use 60hz 24db/oct. I just did the mod yesterday and it sounds absolutely fucking amazing. Best placement for bass is always, ALWAYS different than best placement for everything else. A speaker in the ideal position will not over-emphasize or muddy the bass OR make it thin, or the imaging diffuse. I moved them straight back about a 1 - 2 feet, and the bass integration snapped into focus. Don't think a sub is actually necessary but just want to see what it does to the sound if the LS50Ws focus even more on the mids/highs. YMMV but for my room and music preferences it gave me the best results. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Speakers should be crossed over one octave above their 3db down point, and the subs should be crossed over at the same point or slightly higher. you will get the best result from letting the LS50W play full range, and we cant tell you the sub settings, it is all depended of the rom and placement of the LS50W's, if you get lower extension on them then the sub can be set lower. Press question mark to learn the rest of the keyboard shortcuts, Revel Ultima Salon2 | Devialet Expert 440 PRO, KEF LS50, ICEPower 125asx2, Khadas Tone Board, Pi 3 JACK, Spendor SA1,Monitor audio W15,ICEpower200ASC, Bel Canto 2.5. Discussion in 'Audio Hardware' started by rbp, Jul 4, 2013. This may be higher than you were expecting, but that is generally the best way, though anything above 80hz and you get into localization issues. The sub has only added to the enjoyment and not taken away. Crossovers between speakers and subwoofers are usually 12dB/oct or 24dB/oct. They seem to be a very compatible combination. Set the crossover point on the subwoofer as high as possible so it does not interfere with this. Since you've already got 'em, move them around and see what you get... but mark your previous positions carefully, of course. I ran the speakers full-range, and used a 60Hz lowpass for the sub. John Chillari of Sydney’s Apollo Hifi with the KEF LS50 Here’s the spec skinny (for those who can’t be bothered with the above click-clack): Drivers : 5.25″ aluminium-magnesium alloy woofer, 1″ wave-guided aluminium tweeter, “Uni-Q” coaxial configuration, crossed over at 2.2kHz, 79Hz-28kHz frequency response, 85db sensitivity. That doesn’t make sense. The LS50W’s have much deeper bass extension. They sounded a little lost and diffuse to me before. and a much better result. The sub cut at 80 hz the signal to the kef so that the small cones can work free from distortion and reprosuce midrange frequency even clearer. Speakers should be crossed over one octave above their 3db down point. A user took some KEF LS50, measured them and improved the crossover by replacing the woofer part entirely. Some will say that you should set the crossover point 10% above that -3dB frequency, but with decent quality components it’s really … New comments cannot be posted and votes cannot be cast. We are rebuilding the search index and other forum caches this morning. Every speaker has it's own balance. Best Match. I don’t want huge reverberating bass just more of a punch than the LS50W packs for when I throw on some hip hop and bass heavy music. Why did you choose that? That is a steep rolloff. The LS50W’s have much deeper bass extension. Our primary goal is insightful discussion of equipment, sources, music, and audio concepts. If it muddies the sound of the LS50, its going back. It is IMHO a huge improvement over the original speaker. Technically, you want to set the crossover to the -6dB point (in-room) of the speaker, as then they will add up to 0dB. Search results may not appear correct until indexing has completed, and the forum may respond a little slower than normal until this has finished. and i can tell you that sub make a world of difference, i would recommend sealed subs, i dont trust ports or passive, then you might get a bit muddled bass or boomy sound. KEF LS50s hit -3db at 79hz, so you recommend they be crossed over at 138hz? The listener will be the judge of the perfect balance. That means if you crossover at 80Hz using 12dB/oct, the feed to the speakers is normal until 1.5x the crossover point, so 100Hz, then it will be -12dB @ 50Hz. With every speaker there is a compromise, when moved around the room. The sub is integrated with the loudspeakers thanks to the auto eq system that takes also into account the room acoustic. Don’t really care about movies just music. You set it to blend with frequency rolloff of the mains it is used with. You can always just move them a tad closer to your back wall and/or corners. I first auditioned them at the dealer and they had them about 5 feet from both, and it wasn't happening for me - I felt I wasn't giving them a fair shake. Loving my LS50Ws, trying to play with a sub but have never bought one yet. The speakers will autodetect the subwoofer being connected and manage the crossover for you. That means if you crossover at 80Hz using 12dB/oct, the feed to the speakers is normal until 1.5x the crossover point, so 100Hz, then it will be -12dB @ 50Hz. You don't know what you're missing. The signal will get attenuated to -6dB for both at the crossover point. Somewhere between 50-65hz.
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