Sigberg Audio @ Purité Audio London

[Emlin]

The Recommended listening distance: 1.5-8 meters (5-26 feet) is intriguing. As is the Maximum SPL@1m (weighted pink noise): 122dB (per speaker). They are a 12" midd-bass/woofer and apparently play plenty loud.

See what you mean. I don't think I'd want to be 5 ft from them at anything even approaching full volume! Even without the necessary subs.

 

[sigbergaudio]

See what you mean. I don't think I'd want to be 5 ft from them at anything even approaching full volume! Even without the necessary subs.

The distance recommendations is meant to indicate that they could be used as anything from near / midfield to main monitors in a studio, and basically any size living room.

Then you'd also need to choose the right subs to go with that depending on your spl requirements.

 

[sigbergaudio]

I also don't think anyone will realistically play the Mantas at full volume. But that capacity implies you will have headroom, low distortion and intact dynamics at basically any volume you'd reasonably expect to play.

 

[Purité Audio]

Quite I can confirm ( as can my wife who was in the garden) that there is no issue whatsoever on how loud they will play with no change whatsoever in SQ which is ‘authoritative’!


Keith

 

[MKR]

How do you get 122dB from such a small coax driver (and low distortion) ? Does not seem possible

 

[sigbergaudio]

How do you get 122dB from such a small coax driver (and low distortion) ? Does not seem possible

As specified, it's weighted pink noise. In other words noise emulating the crest curve of music, where you typically see a much lower energy level at high frequencies.

Put differently: When you play music at 122dB, the level isn't 122dB at 10khz.

 

[sigbergaudio]

 

[MKR]

Thanks, that makes more sense, so in fact the coax is not capable of such output. But, this is not so clear as the spec reads now, easy to misinterpret.

 

[sigbergaudio]

Thanks, that makes more sense, so in fact the coax is not capable of such output.

Well, we've never actually tried. The Coax is not about to die at this level if that is your concern. It's a common misunderstanding that you need large compression horns to play loud in the top end. A high powered, high quality, waveguided dome tweeter will play very loud indeed. This driver is at less than 2% THD@110dB/5khz as an example. I assure you that you will not run out of capacity.

But, this is not so clear as the spec reads now, easy to misinterpret.

Perhaps, how do you suggest it is presented? Would you not be interested in the maximum SPL you could play music? That is what is specified now. This is also a typical way to present maximum SPL, for those who even do it at all. And for instance in PA specs you often see a harder roll-off factor than this.

Edit: Also note from the table I posted of the pink noise energy spectrum that the sound is basically at full level well into the frequency range covered by the coax.

 

[Flexecutioner]

I think listing the CEA 2034 spec might help, but maybe avoiding the term "pink noise" on the spec sheet would be helpful. I tend to associate pink noise with a full spectrum signal and not one that has been filtered at all. Maybe that's just me. I don't have an issue with the way the information is presented, just trying to provide useful feedback.

 

[sigbergaudio]

I think listing the CEA 2034 spec might help, but maybe avoiding the term "pink noise" on the spec sheet would be helpful. I tend to associate pink noise with a full spectrum signal and not one that has been filtered at all. Maybe that's just me. I don't have an issue with the way the information is presented, just trying to provide useful feedback.

"I tend to associate pink noise with a full spectrum signal and not one that has been filtered at all"

Not sure how to interpret this, the specs don't say "pink noise", but "weighted pink noise", implying quite clearly that it is not a pure pink noise signal.

For clarity (you may know but others may not), pink noise is not equal energy at all levels, that's called white noise. So there's no implication here that the speakers can withstand an equal energy signal at 122dB, it's explicitly stated that the test signal is not equal energy.

Feedback well received, I have now added a reference to the standard so people may google the specifics if one are so inclined.

 

[sigbergaudio]

It's also worth mentioning that all drivers are not created equal. The Manta drivers are built by a pro driver manufacturer, and the motor structure of the coax is basically as large as the driver itself. The 12" is also a high performance, high sensitivity unit from the same manufacturer.

 

[Purité Audio]

If you check out Sigberg Audio’s facebook page,

Sigberg Audio

Sigberg Audio. 2,484 likes · 178 talking about this. Sigberg Audio premium loudspeaker systems and subwoofers. For music lovers and professionals. Made in Norway - Ships worldwide! Our loudspeakers...

www.facebook.com

There is a series of interviews with Christer Krogh, head engineer at Velvet recording.
Keith

 

[Purité Audio]

Baptiste ( aka @poopy ) visited today to hear the Mantas just to confirm they were as good as he thought they were on his first visit, and they are!
It was a thoroughly enjoyable day four way speakers rule.
Keith

 

[poopy]

Baptiste ( aka @poopy ) visited today to hear the Mantas just to confirm they were as good as he thought they were on his first visit, and they are!
It was a thoroughly enjoyable day four way speakers rule.
Keith

Strange day (today) as would say the old Jim.
Up at 4am to demo the 4-way Mantas for about 4 hours with Keith (thanks again for your time and for sharing your passion).

Repeated 'ear cleaning' with the D&D 8C didn't change anything to the final verdict: The Mantas with dual 10D subs (properly integrated) presented a remarkably wide and deep soundstage, with a feeling of exceptional clarity. Incredible.

Kudos to Thorbjoern Sigberg for his clever speaker design!

 

[Purité Audio]

And we had cakes!
these will be the next pair of speakers at Purité Towers,

Sigberg Audio SBS.1 Active Speaker Review

Our review of the Sigberg Audio SBS.1 active speakers show a design that is long overdue. At $6.5k/pair, these Norwegian beauties give you state-of-the-art design in a reasonable size with high dynamic range.

www.audioholics.com

Super job Thorbjørn.
Keith

 

[MKR]

Strange day (today) as would say the old Jim.
Up at 4am to demo the 4-way Mantas for about 4 hours with Keith (thanks again for your time and for sharing your passion).

Repeated 'ear cleaning' with the D&D 8C didn't change anything to the final verdict: The Mantas with dual 10D subs (properly integrated) presented a remarkably wide and deep soundstage, with a feeling of exceptional clarity. Incredible.

Kudos to Thorbjoern Sigberg for his clever speaker design!

Thanks for your thoughts. Then what is your overall preference… Mantas or 8Cs ?

 

[poopy]

Thanks for your thoughts. Then what is your overall preference… Mantas or 8Cs ?

Mantas (+ dual subs) - Without any hesitation.

 

[MKR]

Mantas (+ dual subs) - Without any hesitation.

Thanks … If I were D&D, I would be a bit nervous

 

[Purité Audio]

If only D&D could work on a larger speaker?
Keith