KEF LS50 Owners - Page 75 - AVS Forum | Home Theater Discussions And Reviews
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post #2221 of 3252 Old 03-22-2017, 11:01 AM
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Since I replaced a processor with an Ayre preamp I haven't used subs with the LS50s, because the preamp provides no bass bass management. I had aimed at a balanced system comprised of 5-series Ayre components from disc player through preamp to amp. But I have a Velodyne SMS-1 bass manager that could high-pass to the LS50s and send bass to a pair of HGS-10s. Is the tradeoff worth it? Is removing below 80 Hz from the LS50s likely more important than all balanced?

Last night, I installed the outer bungs in the LS50s, and it seemed to tighten the bass even though the speakers are 20" from the wall behind them.

db
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post #2222 of 3252 Old 03-22-2017, 08:02 PM
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Quote:
Originally Posted by dbphd View Post
Since I replaced a processor with an Ayre preamp I haven't used subs with the LS50s, because the preamp provides no bass bass management. I had aimed at a balanced system comprised of 5-series Ayre components from disc player through preamp to amp. But I have a Velodyne SMS-1 bass manager that could high-pass to the LS50s and send bass to a pair of HGS-10s. Is the tradeoff worth it? Is removing below 80 Hz from the LS50s likely more important than all balanced?

Last night, I installed the outer bungs in the LS50s, and it seemed to tighten the bass even though the speakers are 20" from the wall behind them.

db
Item in bold refers.

The best way to determine this is to do a frequency sweep with both setups, then answer the following questions.

Which setup shows an overall better response?

Which setup shows compression at louder listening volumes? Which one has the lowest total harmonic distortion figures at your normal and extended listening volumes?

REW is your friend here.

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post #2223 of 3252 Old 03-22-2017, 08:15 PM
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I hope I solved the dilemma. I bought a used Bryston balanced 10B to sit between the preamp and amp. My only complaint about the LS50s is what seems to me a bit of bass boom -- not sure boom is the best description. Whatever, it wasn't there before I replaced the processor with the preamp, whereas the overall sound quality is much improved with the preamp in place.

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post #2224 of 3252 Old 03-23-2017, 01:48 PM
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Quote:
Originally Posted by dbphd View Post
I hope I solved the dilemma. I bought a used Bryston balanced 10B to sit between the preamp and amp. My only complaint about the LS50s is what seems to me a bit of bass boom -- not sure boom is the best description. Whatever, it wasn't there before I replaced the processor with the preamp, whereas the overall sound quality is much improved with the preamp in place.

db

That's an expensive solution unless you found a good deal on a used one! Curious if you're using 70Hz or 100Hz for your crossover setting?

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post #2225 of 3252 Old 03-23-2017, 03:02 PM
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That's an expensive solution unless you found a good deal on a used one! Curious if you're using 70Hz or 100Hz for your crossover setting?
I bought a used one for $1K. Now I'm less so sure about my solution. I might use the unbalanced outputs from the Ayre preamp -- some seem to think it's a sin to break the Ayre link -- to the Bryston 10B, and use it only to low-pass below 100 Hz to the subs. I put the outer bungs in the LS50s and that seemed to help. If I go around the Ayre link, I'll try using full bung. Catch is, I already have a Velodyne SMS-1 that I could use for that.

db
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post #2226 of 3252 Old 03-24-2017, 05:32 AM
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Quote:
Originally Posted by dbphd View Post
I bought a used one for $1K. Now I'm less so sure about my solution. I might use the unbalanced outputs from the Ayre preamp -- some seem to think it's a sin to break the Ayre link -- to the Bryston 10B, and use it only to low-pass below 100 Hz to the subs. I put the outer bungs in the LS50s and that seemed to help. If I go around the Ayre link, I'll try using full bung. Catch is, I already have a Velodyne SMS-1 that I could use for that.

db
Every time I have tried the port plugs, it has just reduced the bass output of the KEFs, but not in a good way. Sounds like you just have a frequency imbalance in the bass with the new setup. It is producing more bass, just a little too much in certain areas. Another thing you could try is playing around with the crossover and filter setting of the Bryston, and moving the sub(s) around. And using REW to find out what is going on.

I understand the whole analog purity thing, but it really is old school. Nowadays an issue like this is easily solved with DSP. But then you have to decide where to add it to do the least harm. I would still try to high pass the LS50s somehow.
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post #2227 of 3252 Old 03-24-2017, 04:16 PM
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I am looking to buy a new active setup and am deciding between the kef ls50w and the jbl 705p.

I do not care too much about wireless connectivity, but I would like optical input and usb, if possible. anyone know if the jbl has this?

I can't seem to find any reviews of the jbls. Does anyone have an idea how they'd compare?
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post #2228 of 3252 Old 03-26-2017, 05:39 AM
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The JBLs have a lot of tech built in but being built for recording professionals they only feature XLR inputs.
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post #2229 of 3252 Old 03-29-2017, 04:01 AM
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Pics of my KEFs with their custom covers, on/off..spandex all the baby

Marantz CD6006>PM6006>KEF LS50 & ATC SCM11.v1
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post #2230 of 3252 Old 03-29-2017, 04:03 AM
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Pics of my KEFs with their custom covers, on/off..spandex all the baby
Having problems uploading pics along with post

Marantz CD6006>PM6006>KEF LS50 & ATC SCM11.v1
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post #2231 of 3252 Old 03-29-2017, 10:05 AM
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Having problems uploading pics along with post
I think you need 5 posts to post links/pics?
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post #2232 of 3252 Old 03-29-2017, 01:18 PM
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One more and you should be able to post your pics. I'd be interested to see your custom covers as I'll be needing something soon with a 6 month old baby at home and 4 nephews between 4 and 10 years old.

Main System: Vizio P70 4K TV. Selah Vigore Speakers. KEF Q100 Rear L/R, Mirage BPS 400 LFE Sub. (2x)Rythmik FM8 Subs. Denon AVR-X4500H Receiver. Lyngdorf TDAI-3400 Integrated (2 channel). Oppo BDP-103. Zappiti Mini 4K HDR. GIK 242 Panels, Tri Traps, Monster Bass Trap. Various Vicoustic Desktop: Dynaudio BM6A mkII. Paradigm SUB10 w/ PBK. Cambridge DACMagic+ DAC. GIK 242 Panels, Monster Bass Trap Master Bedroom: Vizio M55 4K HDR. BG Radia In-Wall/Ceiling Speakers (5.2.2). NAD T758v3 Receiver
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post #2233 of 3252 Old 04-01-2017, 11:18 PM
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The LS50s reward quality electronics. Today, we setup a balanced system comprised of an Ayre C-5xeMP disc player, K-5xeMP preamp, and VX-5 Twenty amp driving a pair of LS50s. I played jazz, baroque, and large orchestration. All sounded great; the soundstage is large, deep, and detailed. Given that I hadn't heard this combination before, I can't attribute the very impressive sound to any particular component. That the bass has been extended and tightened is likely attributable to the amp.

I buy everything except Oppos used, so my cost is no more than 50% MSRP, but I must admit the MSRP of the three components was over $20K. That may seem a lot to drive $1.5K speakers, yet the results speak for themselves.

db
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post #2234 of 3252 Old 04-02-2017, 11:35 PM
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One more and you should be able to post your pics. I'd be interested to see your custom covers as I'll be needing something soon with a 6 month old baby at home and 4 nephews between 4 and 10 years old.
Hope this works...
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Marantz CD6006>PM6006>KEF LS50 & ATC SCM11.v1
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post #2235 of 3252 Old 04-03-2017, 05:24 AM
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Wink

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Hope this works...
This is a a pix pre-Besta unit with ATC SCM11.v1 with the new current 'pretender-to-the-throne' whilst running-in
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post #2236 of 3252 Old 04-03-2017, 10:01 AM
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Nice, did you make the covers or did you purchase them somewhere?

Main System: Vizio P70 4K TV. Selah Vigore Speakers. KEF Q100 Rear L/R, Mirage BPS 400 LFE Sub. (2x)Rythmik FM8 Subs. Denon AVR-X4500H Receiver. Lyngdorf TDAI-3400 Integrated (2 channel). Oppo BDP-103. Zappiti Mini 4K HDR. GIK 242 Panels, Tri Traps, Monster Bass Trap. Various Vicoustic Desktop: Dynaudio BM6A mkII. Paradigm SUB10 w/ PBK. Cambridge DACMagic+ DAC. GIK 242 Panels, Monster Bass Trap Master Bedroom: Vizio M55 4K HDR. BG Radia In-Wall/Ceiling Speakers (5.2.2). NAD T758v3 Receiver
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post #2237 of 3252 Old 04-04-2017, 05:25 AM
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They look like they've been kidnapped!!!

JK, they look pretty good - are they an acoustically transparent material (like grille cloth) where they can be left on and still listened to or are they strictly to protect the drivers when not in use?
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post #2238 of 3252 Old 04-04-2017, 07:10 AM
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Nice, did you make the covers or did you purchase them somewhere?
It's all custom. Bought half a meter of black spandex and got the local tailor to stitch 'em up as spec'd

Marantz CD6006>PM6006>KEF LS50 & ATC SCM11.v1
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They look like they've been kidnapped!!!

JK, they look pretty good - are they an acoustically transparent material (like grille cloth) where they can be left on and still listened to or are they strictly to protect the drivers when not in use?
As acoustically as spandex can be , played music thru 'em at times w/out any discernible difference tho' I take it off most of the times esp when the music goes down-low. They were made as a protection from the usual curious finger of the little ones.

Marantz CD6006>PM6006>KEF LS50 & ATC SCM11.v1
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post #2240 of 3252 Old 04-06-2017, 02:12 AM
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Anyone here using the LS50 Wireless with a subwoofer? I'm hoping to improve these speakers for movies and games.

I have the LS50 Wireless speakers connected via USB (Computer) and via Optical-Toslink (PlayStation 4). I bought the speakers primarily for music and for that they sound incredible when paired with my subwoofer (SVS SB-1000). However, movies and games sound... off and just not really great. It's hard to describe the low-end except that the speakers sound better in 2.0 mode without the subwoofer when I'm playing games or watching movies, especially on the Optical-Toslink connection.

I'm thinking of returning the subwoofer but would rather keep it if I can figure out a solution for improving 2.1 sound on movies and games. Would a pre-processing unit help here and how would I set it up? On another thread, I read about a user here using a Marantz 1506 to add an LFE channel.

Does the subwoofer output on the LS50W provide LFE when paired with an HDMI receiver that is used as a pre-amp only for the speakers?

Thanks in advance!
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post #2241 of 3252 Old 04-06-2017, 08:52 AM
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I've been using LS50's as surrounds...the special edition with the blue driver. I want to move from 5.2.4 to 7.2.4. Having trouble finding matching blue driver LS50's. Has anyone listed to or know anything about the R100's? They look very similar. And if I have too, I could even sell the LS50's and get 2 pair of R100's...so they match? Here is a pic of my room.

Are LS50's over kill for surrounds?
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post #2242 of 3252 Old 04-06-2017, 10:10 AM
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Originally Posted by dancjodanc View Post
I've been using LS50's as surrounds...the special edition with the blue driver. I want to move from 5.2.4 to 7.2.4. Having trouble finding matching blue driver LS50's. Has anyone listed to or know anything about the R100's? They look very similar. And if I have too, I could even sell the LS50's and get 2 pair of R100's...so they match? Here is a pic of my room.

Are LS50's over kill for surrounds?
Yes they are, but there isn't anything particularly wrong with using them. R100 would be good as well, especially if you are looking for a closer aesthetic match to the LCR.

BTW, if you could get those ref1's on stands and out of the corners in the cabinets you'd get much better sound
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post #2243 of 3252 Old 04-06-2017, 10:34 AM
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I'm actually thinking of moving up to Blades II's....and selling the ref 1's....otherwise you are absolutely right. When the house was built...I could not get a cut out for floor standing speakers..so I went with the Ref 1's. But now have the itch for Blade II's. And you are also right, the R100's would match the existing speakers better as a total picture.
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post #2244 of 3252 Old 04-06-2017, 12:27 PM
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R300's would look even better!

Main System: Vizio P70 4K TV. Selah Vigore Speakers. KEF Q100 Rear L/R, Mirage BPS 400 LFE Sub. (2x)Rythmik FM8 Subs. Denon AVR-X4500H Receiver. Lyngdorf TDAI-3400 Integrated (2 channel). Oppo BDP-103. Zappiti Mini 4K HDR. GIK 242 Panels, Tri Traps, Monster Bass Trap. Various Vicoustic Desktop: Dynaudio BM6A mkII. Paradigm SUB10 w/ PBK. Cambridge DACMagic+ DAC. GIK 242 Panels, Monster Bass Trap Master Bedroom: Vizio M55 4K HDR. BG Radia In-Wall/Ceiling Speakers (5.2.2). NAD T758v3 Receiver
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post #2245 of 3252 Old 04-06-2017, 03:03 PM
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Does the subwoofer output on the LS50W provide LFE when paired with an HDMI receiver that is used as a pre-amp only for the speakers?
No, that will not work. Like you said, you would need an AV receiver in order to get LFE in movies, games and multichannel music. Subwoofer output on the LS50W only sends low frequencies from the left and right channel.

I too am curious about which subwoofers would be a great match for LS50's.
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post #2246 of 3252 Old 04-06-2017, 03:07 PM
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...I too am curious about which subwoofers would be a great match for LS50's.
I have used twin small Hsu subs and a small Velodyne SPL-8 both worked fine. For HT I think you can use just about any sub if you are feeding enough power to the LS-50s.

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post #2247 of 3252 Old 04-06-2017, 04:30 PM
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Originally Posted by dancjodanc View Post
I'm actually thinking of moving up to Blades II's....and selling the ref 1's....otherwise you are absolutely right. When the house was built...I could not get a cut out for floor standing speakers..so I went with the Ref 1's. But now have the itch for Blade II's. And you are also right, the R100's would match the existing speakers better as a total picture.
I've auditioned the Blade II's in the same room, same electronics as the Reference 1's. OMG...those Blade II's are "otherworldly", if that's a word. While it's a speaker you can't stop looking at, the sound seemingly isn't connected to them. Instead, the sound is just "there" in the room and it's surprising how much bass fills the room.

KEF R500, R200C, R100, R50, SVS SB2000 sub, NAD T758v3 AVR, LG UP875 4K BlueRay, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer. Office: NAD M10, KEF LS50, KEF Kube 10b, Pro-Ject RPM1 TT w/ Ortofon 2M Red. Guest room: Hafler 300 L-R, KEF Reference Model 100 center, KEF iQ10 surrounds, modded M&K V-90 sub, Bluesound Vault 2.
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post #2248 of 3252 Old 04-06-2017, 06:50 PM
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The only issue I have, is that the Blades will have to rest very close to the cabinets, they can't have 3-4 feet of breathing room behind them. I don't have that option! I just want to hear a difference between the Ref 1's and the blade II's if I'm paying that money.
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post #2249 of 3252 Old 04-07-2017, 05:19 AM
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Quote:
Originally Posted by sbklip View Post
Anyone here using the LS50 Wireless with a subwoofer? I'm hoping to improve these speakers for movies and games.

I have the LS50 Wireless speakers connected via USB (Computer) and via Optical-Toslink (PlayStation 4). I bought the speakers primarily for music and for that they sound incredible when paired with my subwoofer (SVS SB-1000). However, movies and games sound... off and just not really great. It's hard to describe the low-end except that the speakers sound better in 2.0 mode without the subwoofer when I'm playing games or watching movies, especially on the Optical-Toslink connection.

I'm thinking of returning the subwoofer but would rather keep it if I can figure out a solution for improving 2.1 sound on movies and games. Would a pre-processing unit help here and how would I set it up? On another thread, I read about a user here using a Marantz 1506 to add an LFE channel.

Does the subwoofer output on the LS50W provide LFE when paired with an HDMI receiver that is used as a pre-amp only for the speakers?

Thanks in advance!
As others have mentioned, the SUB OUT on the LS50W is not the same as an LFE channel since the speakers don't contain any sort of surround circuitry to decode such a signal.

Your best bet is to set the output on the source to Stereo, and then use the KEF's app to split the signal between the LS50Ws and the sub.

Bill
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post #2250 of 3252 Old 04-07-2017, 06:28 AM
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Quote:
Originally Posted by dancjodanc View Post
The only issue I have, is that the Blades will have to rest very close to the cabinets, they can't have 3-4 feet of breathing room behind them. I don't have that option! I just want to hear a difference between the Ref 1's and the blade II's if I'm paying that money.
I don't know where you are located but if you have a KEF dealer for "the good stuff" near you they'll usually bring over the Blade or Blade II for a home audition. My dealer would.

KEF R500, R200C, R100, R50, SVS SB2000 sub, NAD T758v3 AVR, LG UP875 4K BlueRay, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer. Office: NAD M10, KEF LS50, KEF Kube 10b, Pro-Ject RPM1 TT w/ Ortofon 2M Red. Guest room: Hafler 300 L-R, KEF Reference Model 100 center, KEF iQ10 surrounds, modded M&K V-90 sub, Bluesound Vault 2.
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