Few weeks ago i finished my prelude!
One word for beginning: absolutely wonderful!! I'm loving them the sound
is so natural, never harsh, mid and tweeter integration is perfect. bass
are what i was looking for a high end loudspeaker, very powerful but
always controlled with lot of energy! To be honest I clearly prefer the
prelude to the next4 i built last year. I'm not an expert to describe
the sound but i clearly found what i always looking for. They definitely
will stay at home for long time!! you can feel the singer in front of
For this built i keep the medium slice series method . I applied a
polyester plastic in order to reach a perfect surface then i use I keep
all your internal and drivers placement recommendations. Thick is
minimum 3.5cm and reach 5cm for edge. I put lot of brace inside. Result
is that it's just impossible to feel any vibration even with i level
Front and rear are 3mm tick aluminium panel fixed with brass screws, top
and bottom are 4mm thickness aluminium panel fixed with wood screw for
bottom panel and top with double side scotch tape. So it's possible to
take off each panel if paint is damaged or if we want to change color.
The crossover take place in a special room in the bottom of the
loudspeaker so it is not necessary to take off the drivers to access to
Weight of each speaker is approx 75kg, height is 106cm and width 31cm
front and 20cm rear. Internal volume for bass driver is 50 liters net
and i cut the port lenght to 15cm in order to tune the port to 38Hz. In
order to tune my tweeter and bass level to my teste i put 3 double
states switch to the rear of loudspeaker. With that I can choose a
tweeter attenuation of 2.2, 3.3, 3.9 ohms and a bass attenuation of 8.2
or 15 ohms. My taste is 15 ohms for bass and 3.3 ohms for tweeter.
Thanks a lot Troels, your job is amazing, thanks to share your knowledge
to all the world.