We are very excited to present our new Kuoro AWG speaker. Kuoro is a Finnish word meaning “choir” and March Audio believes this very aptly describes this speakers joyful voice that will absolutely captivate you.
Our design objective was to produce a speaker that is moderate in size yet possessed exceptionally deep and warm bass, with sweet crystal-clear high frequencies and the very lowest level of distortion.
Technology
To achieve this objective we investigated and tested a great number of drivers, but none came close in performance to the Purifi PTT6.5W04-NAA-07. This driver is a 6.5” driver that truly cracks the extended-stroke code. PURIFI’s research has identified the parameters that have so far prevented extended stroke drivers from breaking through in truly high performance audio.
Purifi has taken care to optimize the various distortion mechanisms separately, thus guaranteeing that any measured improvement truly reflects a real audible improvement no matter what the signal is. Accurate mathematical models are developed for the motor, suspension and the vibro-acoustics of the dome and surround. These models clearly explain several distortion mechanisms in each domain, which provides fundamental insights into better ways of constructing the motor, cone and suspension. Finally, the same models are used to numerically fine-tune the geometry. This way of working reliably reduces multiple distortions mechanisms which secures low IMD for complex signals.
The combination of the above characteristics results in a compact long-stroke driver that delivers complex sound with a clarity and lack of effort that was previously the exclusive province of large-cone short-stroke drivers. Additionally, thanks to the small cone size, the driver has excellent midrange reproduction.
Dual Purifi PTT6.5W04-NAA-07 woofers are used to increase sensitivity and reduce distortion.
These small speakers behave like much bigger devices and the anechoic low frequency response is only -3dB down at 30Hz. This equates to an in room response that reaches well below 25Hz. This extended response negates the need for a sub woofer when used with music.
To complement the exceptional performance of the Purifi woofer we needed an exceptional tweeter. The Purifi PTT1.3T04-HAG-10 WG147 fitted the bill perfectly. This tweeter is sweet and detailed with exceptional clarity and very lowest levels of distortion.
The integrated waveguide controls the directivity of the tweeter allowing it to perfectly match that of the woofer at the crossover point. The controlled directivity also ensures the indirect sound from reflection’s within your room accurately match the timbre of the direct sound from the tweeter. This provides a much more cohesive sound that is more consistent in different rooms.
Whilst most tweeters exhibit a quickly narrowing directivity as frequency increases, the exceptional waveguide of the Purifi design possesses a wide and almost constant directivity across the audible range. This provides a marvellously realistic “sparkle” to the high frequencies and creates an amazing tangible soundstage where you can reach out and touch the performers.
The crossover filter utilises high quality components including Jantzen capacitors and low loss air core inductors which minimises distortion and maximises sensitivity.
Cabinets
Not only did we want to provide aural harmony with the Kuoro but also aesthetic harmony.
The Sointuva is custom manufactured to order so the cabinets can be finished to your exact specification. We can provide paint finishes in any colour you like from the RAL colour system.
View the range here:
RAL Classic | RALcolorchart.com
Pictured is a cabinet finished in pearlescent white
We also have a range of beautiful solid wood finishes from native Australian hardwood timbers.
Pictured are cabinets (Sointuva speaker) manufactured from locally sustainably sourced Tasmanian Blackwood and Tasmanian Oak timbers.
Primary woods available include:
- Jarrah – Eucalyptus marginata
- Blackbutt – Eucalyptus pilularis
- Tasmanian Blackwood – Acacia melanoxylon
- Wandoo – Eucalyptus wandoo
- Sheoak – Casuarina
- Tasmanian Oak – Eucalyptus regnans
- Baltic Birch Ply
Please contact us at alan@marchaudio.com to discuss your preferred finish.
The cabinets also perform an important function with respect to the sound quality. March Audios expertise with vibration analysis ensures the cabinets have appropriate bracing and damping to minimise colouration. The rounded edges are not just for aesthetics, they also minimise the effects of diffraction.
Reviews
Coming soon.
Performance
Superb sound is derived from superb technical performance. The Sointuva AWG has been been designed and tested to ensure it delivers both.
Measurements for the technical among you are coming soon.
