For sale a fabulous custom made pair designed based on the design from Bastanis, the Mandala 18-inch Open baffle powered sub-woofers
Needs finalizing on the wood and if you are a DIY man you will appreciate the work
Pictures of actual item.
Mandalas are well known for harmony and flexibility, they allow to
vary a range of given elements to create a unique but proven piece of
The Bastanis MANDALA open baffle speakers are the next
evolutionary step in Bastanis speaker- design, based on the qualities
of the Bastanis Prometheus MKII and Atlas.
The Bastanis MANDALA open baffle speakers offer the
possibility to custom fit. Each Bastanis woofer can be combined with
each open baffle and each woofer- amp to a harmonious sounding individual
The 8Ω widebanders
are wired in series for a nominal 16Ω load and run without a filter. A single 1.0µF capacitor serves as high-pass filter to the Gemini tweeter at 11kHz though the decreasing response of widebander and tweeter meet acoustically at around 8kHz. Finally there are two long graphite resistors wired in parallel across each widebander to "...flatten the impedance for tube amps. They also take out some energy in the upper midrange and, important for the Duo baffles (models using two widebanders per side), help together with the series wiring of the drivers to make the drivers behave 100% equal to each other and get a unique wave front. The resistors have a 12Ω value for the Classic drivers and are 15Ω for the Chrystal.
Highest possible efficiency.
Simplified designs, reduced to the max.
Reduction of distortions – even the dynamical non-linearities – to a minimum.
Taking care that all parameters are optimized and not a few of them only.
When the existing methods aren`t sufficient search for new methods but don`t compromise the design.
The ultra high efficiency of 100 dB/1W/1m and the crossoverless design offers direct coupling of the wideband drivers with the power amp.
Review from 6moons here: http://www.6moons.com/audioreviews2/bastanis2/1.html