Passive coaxial hifi speakers

[gasolin75]

Why passive though?

I have an amplifier with all the bells and whistle, if i happen to win the lottery it would be passive speakers

I just wanted to look, read and watch videos of more coaxial speakers then the usual fyne audio and kef ls 50 meta and latest kef Q's

Single source point,time alignment,nearfield, stereo image,wider sweetspot

The kef ls50 has distortion at medium levels in the bass (there a thread about on asr where some even talk about a crossover at 200hz for a subwoofer to void the distortion)

Would be interesting if they would make a new lef ls50 and fix the bass distorting + make it more a, i can also play loud (with no bass distortion) + a reduction of the little sharpness there is at the high midrange,lower tweeter

Harmonic distortion (relative)

'KEF LS50 Bookshelf Speaker Review'

Jan 28, 2020

This is a review and detailed measurements of the famous KEF LS50 speaker. It was kindly loaned to me by a local member. The LS50 costs US $1,500 but seems to be on sale for US $1,300 on Amazon and elsewhere.

The LS50 nails the look of the speaker with the bright color and shape of the concentric driver:

80% of the success of a speaker in this super crowded market is the industrial design and KEF nails that. The enclosure itself feels like it is solid all the way to its core!

Not much exciting on the back other than nice sized speaker terminals and a port that has...

• amirm
• Replies: 583
• Forum: Speaker Reviews, Measurements and Discussion

• 

Here it's already at 86 db (which i consider loud butin no way normal concert levels) the 4 pictures before Impedans and Phase

'KEF LS50 Meta Review (Speaker)'

Aug 7, 2021

This is a review and detailed measurements of the KEF LS50 Meta bookshelf coaxial speaker. It was kindly purchased new by a member and drop shipped to me and costs US $1,500 for a pair.

The LS50 Meta comes in different colors and I must say, it looks stunning in white:

You could sell it as a decoration piece and it would still sell strongly!

Even the back panel oozes beauty and custom design:

Love the wide apart binding posts that are easy to tighten and loosen.

Speaker also feels quite dense and solid which is good.

Measurements that you are about...

• amirm
• Replies: 1,442
• Forum: Speaker Reviews, Measurements and Discussion

• 

 

[IngMishael]

I have an amplifier with all the bells and whistle, if i happen to win the lottery it would be passive speakers

I just wanted to look, read and watch videos of more coaxial speakers then the usual fyne audio and kef ls 50 meta and latest kef Q's

Single source point,time alignment,nearfield, stereo image,wider sweetspot

The kef ls50 has distortion at medium levels in the bass (there a thread about on asr wherr somr even talk about a crossover at 200hz for a subwoofer to void the distortion)

Would be interesting if they would make a new lef ls50 and fix the bass distorting + make it more a, i can also play loud (with no bass distortion) + a reduction of the little sharpness there is at the high midrange,lower tweeter

Harmonic distortion (relative)

'KEF LS50 Bookshelf Speaker Review'

Jan 28, 2020

This is a review and detailed measurements of the famous KEF LS50 speaker. It was kindly loaned to me by a local member. The LS50 costs US $1,500 but seems to be on sale for US $1,300 on Amazon and elsewhere.

The LS50 nails the look of the speaker with the bright color and shape of the concentric driver:

80% of the success of a speaker in this super crowded market is the industrial design and KEF nails that. The enclosure itself feels like it is solid all the way to its core!

Not much exciting on the back other than nice sized speaker terminals and a port that has...

• amirm
• Replies: 583
• Forum: Speaker Reviews, Measurements and Discussion

• 

Here it's already at 86 db (which i consider loud butin no way normal concert levels) the 4 pictures before Impedans and Phase

'KEF LS50 Meta Review (Speaker)'

Aug 7, 2021

This is a review and detailed measurements of the KEF LS50 Meta bookshelf coaxial speaker. It was kindly purchased new by a member and drop shipped to me and costs US $1,500 for a pair.

The LS50 Meta comes in different colors and I must say, it looks stunning in white:

You could sell it as a decoration piece and it would still sell strongly!

Even the back panel oozes beauty and custom design:

Love the wide apart binding posts that are easy to tighten and loosen.

Speaker also feels quite dense and solid which is good.

Measurements that you are about...

• amirm
• Replies: 1,442
• Forum: Speaker Reviews, Measurements and Discussion

• 

It will be an impossibility to make that size play that loud without IMD which is the bane of coaxials.

So yeah you need a speaker larger than the LS50 if you're not ready to cross them as high as 150-200Hz.

 

[gasolin75]

86-96 db peak can most speaker do, in most case it's max 10 watt ish

Kef ls50 meta is rated to max 106 db

 

[Arindal]

It will be an impossibility to make that size play that loud without IMD which is the bane of coaxials.

Agreed that 2-way coaxials have their inherent limitations, but I would say a better compromise is possible. Either by switching to a 3-way concept in a similarly-sized enclosure, or by choosing a bigger midrange cone, more decoupled from the tweeter´s wave emanation.

Kef ls50 meta is rated to max 106 db

That is rather unlikely, taking the diaphragm area of the midwoofer and a realistic excursion limit into account.

Objectively from engineering view the current TOTL Kef and Genelec offerings are more advanced than those basically older TAD designs but I can totally understand that people who prefer wider directivity like you like their tonality more.

What particularly you find ´more advanced´ in these designs?

I am by no means speaking in favor of really wide directivity of a coaxial design. I was more referring to the slightly wider radiation angle of the TAD Be coax in the aforementioned frequency band because it perfectly matches the neighboring band´s directivity. A smaller, steeper cone shape inevitably leads to wider radiation at lower frequencies and narrower directivity the more the tweeter kicks it, which is by definition imbalanced directivity, which I would not recommend.

 

[eddantes]

One has a 6 figure technical measurement device and knows how to use it; the other one yaps for 20 minutes.

 

[Timcognito]

Erin loved the 8 and disliked the 10. The $2700/pr MoFi 8 can be had for $2000 in the USA, not even sure if they are available in Europe. I skimmed the 2nd review and saw no measurements. The designer of SourcePoint 8 and 10 has had many great speakers for Pioneer, Elac and Mobile Fidelity and let others weigh in on how good they are because I have not heard any MoFi speakers.

 

[bmwr75]

Tyler Acoustics makes the U1s.

U1's

FR: 45-20k Sens: 90db Imp: 4 ohms Drivers: 7" paper cone woofer/soft dome tweeter coax Size: 10x12x14 Weight: 25lbs each Choose from any of our standard finishes or call us today to place a custom order! **Price listed is per pair**

tyleracoustics.com

 

[gasolin75]

measurements don't matter

0-100 (62 miles) top speed of a car don't matter, what matters is the handling, any car can god fast, most speakers of a certain size can go loud
but do they sound good ?

What matters is the sound

Don't know U1s

 

[MKR]

measurements don't matter

0-100 (62 miles) top speed of a car don't matter, what matters is the handling, any car can god fast, most speakers of a certain size can go loud
but do they sound good ?

What matters is the sound

Don't know U1s

Measurements don’t matter? You might be in the wrong forum, grabbing popcorn

 

[gasolin75]

flat sound is most of the time borring

Measurements don't say anything about a speaker having a detailed or musical sound

Tesla plaid s with 1000hp might be fast (acceleration and top speed) but is it the best handling ev or of any type of car ?

 

[kyuu]

flat sound is most of the time borring

Measurements don't say anything about a speaker having a detailed or musical sound

Incorrect, we have a lot of research that ties measurements to listener preference. You can like what you want, but this isn't the forum to be spreading "measurements don't matter" nonsense around.

Jay's Audio Lab, like most audio-focused Youtube channels, is a joke, btw. And posting links to videos without a summary is against forum rules.

 

[IngMishael]

flat sound is most of the time borring

Measurements don't say anything about a speaker having a detailed or musical sound

Tesla plaid s with 1000hp might be fast (acceleration and top speed) but is it the best handling ev or of any type of car ?

So why are you here rambling on? Yes measurements isn't all the matters as the speakers in your room and how your brain interpretes that is the final say but even that can be quantified pretty well with REW dataset.

If measurements don't matter as you say, why the hell are you listening to any subjective review.

Those reviews are marred by:

- The person's hearing ability

- The person's way of setting them up in their space

- Their space

- The recording they listen to

I'd rather the no emotion dataset be an anchor in reviews cos that is the only thing that isn't tainted by humans hands outside of measurement error

Stop spamming links and get on with your choice already

 

[Pearljam5000]

Colored sound is the most boring thing ever

 

[gasolin75]

Not talking about studio monitors

Hifi speakers that sounds good are often not flat

 

[kyuu]

Not talking about studio monitors

Hifi speakers that sounds good are often not flat

Again, research says otherwise. In any case it doesn't make sense to use your speakers as tone controls. If you want not-flat, that is trivial to implement upstream as actual tone controls which can be altered and turned on or off. The speaker's job is to reproduce the incoming signal as faithfully as possible.

 

[Timcognito]

Erin, like Amir, tests and then listens to speakers and gives a bit more verbiage to both observations. I think the OP should look at a few of Erin's reviews after looking at the size and configurations of the speakers in the photos and text at the start of the review to pick out some out. After a few views one can begin to understand that the microphone is to hearing as a telescope is to the sky both can capture much more information and preserve it for future examination. Hearing something the can tainted or enhanced by the room and the listeners mood and age, and only preserved as a fading memory or worse the sales person's opinions. Everyone is on learning curve and is at different part of the journey. At ASR we know that speaker accuracy has been correlated to user preference through many rigorous studies by Toole, Olive and others. That is what people are pointing to as factual. This does not stop buyers from having nuanced preferences as there are audible differences in speakers and use cases. Generally the philosophy at ASR is to start with an accurate device from closely mic'ed single speaker in controlled environment and go from there, with the belief that something flawed will not yield something good, but I'm sure there are a few exceptions.

Loudspeakers

The Sound of Science

www.erinsaudiocorner.com

 

[jhaider]

I was referring specifically to the Beryllium-cone designs for TAD in their Reference series, which in comparison with the other sophisticated coaxials are offering a more constant directivity, particularly wider treble dispersion between 2 and 8K, as well as lower frequency extension, both due to the flatter and bigger midrange cone.

Subjectively I found them to be more tonally balanced off-axis and their transparency is among the best I have ever heard, easily the best coaxials.

This comes at a price, though, as they show some narrow-banded interference issues above 10K, and the loudspeakers in which they are available, are horribly expensive.

The “cheap” ones (magnesium cone, ceramic-graphite tweeter) were really good, too. Some of the widest consistent-dispersion coaxes out there, along with the Technics flat ones.

 

[RexrothPigeon]

Not talking about studio monitors

Hifi speakers that sounds good are often not flat

Lolllllllllll

 

[gasolin75]

Not genelec studio monitor

Hifi speakers

Remember that many records are also not flat again because flat is borring (reminds me of a women) like Bob James Feel Like Making LIVE!

Wonderfull sound and music

 

[kyuu]

Remember that many records are also not flat again because flat is borring (reminmds me of a women) like Bob James Feel Like Making LIVE!

What? How can a record be "flat"? A record is the source, it was mastered to sound a certain way. That has zero to do with speakers reproducing that content.