There is no ATC SCM150ASL Pro review or frequency response curve.

[sysfc6]

There is no ATC SCM150ASL Pro review or frequency response curve.

 

[YSDR]

There probably isn't any such information for the other Pro models either. Try asking ATC for this.

 

[staticV3]

There is no ATC SCM150ASL Pro review or frequency response curve.

If this is something that you'd like to change, consider sending a speaker to Amir or Erin for review

Or contact ATC and ask them to send one.

 

[MaxwellsEq]

There is no ATC SCM150ASL Pro review or frequency response curve.

You are right! Well spotted.

 

[Ktacos]

ATC is allergic to making their speakers data available. A few users have shared their own data here but mostly just on the smaller bookshelf models which did look good, to the larger cabinets but the data is poor and the posters get strangely defensive when you tell them their 0-120db window with 20 db scale is not good.

 

[dfuller]

ATC is allergic to making their speakers data available. A few users have shared their own data here but mostly just on the smaller bookshelf models which did look good, to the larger cabinets but the data is poor and the posters get strangely defensive when you tell them their 0-120db window with 20 db scale is not good.

I literally emailed them to ask wtf "coherent" means and they never responded.

 

[Purité Audio]

Their US distributor stated that he at least will never send a model for measurement.
Keith

 

[ahofer]

Funny thing for a brand that advertises itself as the studio reference.

 

[Nopiano]

Funny thing for a brand that advertises itself as the studio reference.

Perhaps studios get data, or choose in other ways. Whatever their arrangements they’ve been around for a while and there’s no reason to suppose the 100 or 150 is significantly different to the 50 except in bass extension and total output, surely?

Martin Colloms measured the SCM50 in Hifi Critic, reprinted here…https://atc.audio/wp-content/uploads/2018/01/Hi-Fi_Critic_SCM50PSL_WEB.pdf His later review of the Actives references the earlier test and highlights the differences…

https://atc.audio/wp-content/uploads/2019/10/ATC_SCM50ASL_Review_Hi-Fi_Critic_Sept_19.pdf

 

[DSJR]

I've seen a measured plot for the 150ASL somewhere and I think, the 100ASLs too (my personal plots went with the speakers when I had to sell them). 50ASLs have been tested over the years all over the tech-based domestic mags. The big ones weigh an effin' ton(ne) and it'd need two or three people to deal with measuring them.

Wouldn't the likes of 150ASLs be properly installed and set up in the room anyway? I mean, it's taken for granted that to get the best from Genelec, Neumann and other beloved (even passive) speakers around these parts, they would have a proper room-curve done with a Umik or similar and suitable software.

Just hunt around and I'm sure you'll find something, rather than risk attacking ATC all over again. I can think of other well respected speaker makers that never publish full curves (one lets slip things occasionally, but the Klippel-fiends wouldn't probably accept them in any case)

 

[Ktacos]

Their US destructor stated that he at least will never send a model for measurement.
Keith

Says all I need to know about ATC. In 2024 there is no excuse for not providing data, the whole secretive approach just doesn't cut it anymore when companies like KEF release white papers and even hop on this forum to give people advice on converting their passive KEF to active. Transparency is king.

They know their speakers aren't on par with other offerings, they know they'll lose business if they reveal data on their speakers.

 

[Purité Audio]

Yup, I can’t think of any other reason why you wouldn’t want your product measured.
Keith

 

[sq225917]

Lots of criticism, I've never seen ATC make any technical claims for the FR of their speakers. And I doubt very much that they care at all what a bunch of measurists think about their products.

I've heard them, I like them, I'd happily give space to active 50's, I couldn't care less how they measure. By contrast, D&D measure pretty well, I've never heard them sound anything but awful.

 

[A Surfer]

Lots of criticism, I've never seen ATC make any technical claims for the FR of their speakers. And I doubt very much that they care at all what a bunch of measurists think about their products.

I've heard them, I like them, I'd happily give space to active 50's, I couldn't care less how they measure. By contrast, D&D measure pretty well, I've never heard them sound anything but awful.

That makes no sense. How can something measure well and sound awful? Unless it was the room and or the location within the room. Did you bother to take note of those factors or consider them?

 

[Purité Audio]

Lots of criticism, I've never seen ATC make any technical claims for the FR of their speakers. And I doubt very much that they care at all what a bunch of measurists think about their products.

I've heard them, I like them, I'd happily give space to active 50's, I couldn't care less how they measure. By contrast, D&D measure pretty well, I've never heard them sound anything but awful.

Uh-huh.
Keith

 

[a4eaudio]

...How can something measure well and sound awful? ...

There was a bunch of posts about this last week. I don't think it was widely accepted as possible here at ASR.

Interesting quote

Daniel von Recklinghausen, an engineer who worked for H.H. Scott back in the 1950s and ’60s said, ‘If it measures good and sounds bad, it is bad. If it measures bad and sounds good, you’ve measured the wrong thing.’ Just food for thought.

www.audiosciencereview.com

 

[czt]

I've never seen ATC make any technical claims for the FR of their speakers. And I doubt very much that they care at all what a bunch of measurists think about their products.

SCM150ASL Pro | ATC Loudspeakers

atc.audio

"Amplitude Linearity (±2dB): 60Hz-17kHz"

"Measurists"

 

[Theta]

I've seen a measured plot for the 150ASL somewhere and I think, the 100ASLs too (my personal plots went with the speakers when I had to sell them). 50ASLs have been tested over the years all over the tech-based domestic mags. The big ones weigh an effin' ton(ne) and it'd need two or three people to deal with measuring them.

Wouldn't the likes of 150ASLs be properly installed and set up in the room anyway? I mean, it's taken for granted that to get the best from Genelec, Neumann and other beloved (even passive) speakers around these parts, they would have a proper room-curve done with a Umik or similar and suitable software.

Just hunt around and I'm sure you'll find something, rather than risk attacking ATC all over again. I can think of other well respected speaker makers that never publish full curves (one lets slip things occasionally, but the Klippel-fiends wouldn't probably accept them in any case) clearest midrange in the business (that's 80% of the music), what else do you need?

Funny thing for a brand that advertises itself as the studio reference.

Clearest mid-range in the business, low distortion (that's 80% of the music). Major studios actually listen before buying what else do you need?

 

[Purité Audio]

Clearest mid-range in the business, low distortion (that's 80% of the music). Major studios actually listen before buying what else do you need?

Do you have any measurements for ATC be great to see some, rather than anecdote which lets be honest there is already way too much of in audio..
Keith

 

[A Surfer]

How many times do we read things like clearest midrange, or sweetest highs. Sigh.