The BG 20 is supplied by Visaton with a cone diffuser, a small funnel type attachment. Many full range drivers used to have this type of attachment in the past. For this kit the diffuser has to be carefully removed with a carpet knife (see description in Klang+Ton).
Excerpt of the review in Klang+Ton 3/2007:
... "This loudspeaker is of great charm, especially noticeable when used in
conjunction with a valve amp: flow of music. While other speakers concentrate
on detailed reproduction or perfect tonality, the CT 230 excels in joy of
play, dynamics and well balanced sound. That the CT 230 is here and there
not meticulous enough we gladly forgive since there is actually nothing lacking.
Bass is astonishingly voluminous and controlled, the mids are expressive,
typical for a full range driver and the tops are dynamic. Especially when
playing jazz and pop it becomes evident that a large piston area is being
moved. In particular, the cone tweeter does an excellent job. Even though
the heydays of this driver are over, it doesn't need to be thrown on the scrap
when used correctly. The large baffle certainly plays a major role in creating
dynamics, by backing up the drivers. Particularly, the bass gains from it
as it is solid and three-dimensional. Obviously, there are speakers with less
coloration that are more universal and more suited for a living room. But
that's not what this Cheap Trick is all about. The CT 230 shows enthusiasm
and likes to be different and certainly excels in it." ...
Our kit consists of:
Price CT 230 kit without cabinet per unit: EUR 138,00 excl. VAT: € 115.97 / $ 132.20
Upon request a 220 x 155 mm universal PCB is available for mounting the crossover components. Price for PCB EUR 11,80 excl. VAT: € 9.92 / $ 11.30
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