March Audio Sointuva Speaker

[March Audio]

This has been teased for a while now, we decided to put it on hold at the start of covid but are now ready for release.

The Sointuva (Finnish for musical harmony) is based on the Purifi Ptt6.5W04 woofer, PTT6.5 PR passive radiators and the Bliesma T34B-4 Beryllium tweeter. Im not going to go into a lot of detail in this post but just wanted to show some pictures and of course a measurement.

How does it sound? Well its exceptionally low distortion and clean. Equally it is a warm sound with very deep bass extension, particularly for its size. The high frequencies are sweet, extended, fantastically detailed and not a hint of harshness.

Prototype pics

Semi free field measurement. Ignore below 100Hz, its not accurate. More measurement will be coming later.

On axis and listening window.

 

[RayDunzl]

Got a shot of the backside?

 

[AudioJester]

Looks brilliant.
Presume the passive radiator/s are on the rear? Whats the crossover point?

 

[Juhazi]

Hieno nimi! Toistovastekin näyttää hyvälle!

 

[March Audio]

Got a shot of the backside?

 

[March Audio]

Looks brilliant.
Presume the passive radiator/s are on the rear? Whats the crossover point?

o0ohh around about 1.5kHz

 

[pierre]

Do you have a price range In mind?

 

[March Audio]

Hieno nimi! Toistovastekin näyttää hyvälle!

Kiitos!
Olemme kaikki suomalaisia tässä talossa.
Kimi ja Oona suomalainen spitz

 

[March Audio]

Do you have a price range In mind?

As expensive as possible

 

[ririt]

And what about your preamp project? Any timeline for a release?

 

[andreasmaaan]

Looks like a very solid design @March Audio!

 

[MZKM]

Do you have a price range In mind?

Considering the woofer is ~$700 USD/pair, the tweeter is ~$900 USD/pair, and the PR is ~$600 USD/quartet, I would expect at least $5K.

These are some of the best woofers and tweeters in existence though. And it seems well designed, the rounded edges for diffraction and the chosen 1500Hz crossover is great as that is where this woofer starts to beam, and the distortion measurements of this tweeter shows it can handle 1500Hz. I wonder what that small dip @3kHz is from though, as it isn‘t native to the tweeter in the HiFiCompass measurements and it doesn’t disappear off-axis; that said it’s mild.

EDIT:AudioXpress measurements do show a dip there.

 

[March Audio]

Considering the woofer is ~$700 USD/pair, the tweeter is ~$650 USD/pair, and the PR is ~$600 USD/quartet, I would expect at least $5K.

These are some of the best woofers and tweeters in existence though. And it seems well designed, the chosen 1500Hz crossover is great as that is where this woofer starts to beam, and the distortion measurements of this tweeter shows it can handle 1500Hz.

It won't be that expensive

 

[MZKM]

It won't be that expensive

Even better.

Did you also consider/experiment with the 34A model?

 

[Vini darko]

Don't know if I'll ever get used to those surrounds on purifi drivers. Anyway cute little speaker

 

[Purité Audio]

Looks absolutely lovely Alan, loking forward to hearing them.
Keith

 

[jae]

Now all it needs is a couple of eigentakt modules

 

[pjug]

Very nice. I think you should call that finish "Amir White" (in recognition of Amir's affection for all things white in audio products)

 

[March Audio]

And what about your preamp project? Any timeline for a release?

Not yet, there just aren't enough hours in the day to get all this done!

 

[March Audio]

Even better.

Did you also consider/experiment with the 34A model?

Yep, started with the 34A but got better crossover with the 34B.