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Visaton GRAND ORGUE (per paar)

Visaton GRAND ORGUE

 

(Bouwpakket is voor 2 speakers zonder hout)

The toughest challenge for a high-end loudspeaker is to reproduce the lowest
frequencies of larger instruments, such as an organ or double bass, with
appropriate fidelity

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1 018,64 € BTW incl.

5892

Visaton GRAND ORGUE

 

(Bouwpakket is voor 2 speakers zonder hout)

The toughest challenge for a high-end loudspeaker is to reproduce the lowest
frequencies of larger instruments, such as an organ or double bass, with
appropriate fidelity. Only very few speakers are at all able to reproduce the
lowest register of a church organ and even then only the very best are able to
make it sound as if it was coming from an organ pipe. To do credit to
a double bass in all its glory without sounding fluffy or over-inflated or, even
worse, giving up altogether, is the reserve of very few, outstanding loudspeaker
constructions. The "Les Orgues" speaker series, in this case the GRAND ORGUE species, represent exactly
that capability. With eight WS 25 E 8 Ohm woofers,
optimised specifically as a free-air system, mounted in a folded, but open baffle, they
are able to reproduce bass down to below 20 Hz in a most natural, unhurried and
completely unexaggerated manner and with no sign of weakness. Since there is, in
effect, no enclosure, the resonant frequency of the
woofer is not increased, but in this case even decreased, which enables it to
emanate clear, non-compressed extremely low frequencies. The precondition for
this low-range bass imaging, which uses double-sided radiation, is, however,
also to ensure the speakers are far enough away from the wall. One metre is
sufficient, but for full power right to the bottom of the bass range, 2 - 3
metres is preferable.

But the effortless and unobtrusive deep bass is not
all, by any means. The bass section, which radiates to both sides, is
supplemented by a line array consisting of eight oval SL 713 4 Ohm full-range
drivers. This moderately priced full-range loudspeaker is
characterised by its extremely light paper diaphragm and the voice coil carrier made of kraft paper which, together, ensure
absolutely natural sound right through to the highest frequencies.

A key
characteristic of line arrays is that they generate a highly focused sound beam in
the vertical plane. Outside that main path, a large proportion of the signal is
cancelled out by interference. This prevents reflections from the floor and
ceiling from even coming into existence, which would impair the precise
tridimensional imaging of the music. However this beaming effect is a direct
function of the wavelength of the sound radiated. The higher
the frequency, and, as a result, the shorter the wavelength, the more extreme the beaming effect. A large array
such as we have here in the GRAND
ORGUE would normally lead to very extreme beaming in the high-frequency
range, which would not reflect the reality of the sound being played. To
achieve as uniform a beaming effect as possible across the entire frequency
range, which is important to guarantee balanced sound quality in the
listening room, we have arranged for a correcting circuit within the array. This
circuit ensures that, as the frequency increases,
additional output is directed towards the second and third full-range drivers from the
top while the output to the other six drivers is gradually reduced. In effect,
the array is shortened across the full range steplessly from eight loudspeakers
to two. These two loudspeakers should be as close as possible to ear height. If
ear height should actually be higher or lower than the midpoint between the
second and third full-range drivers from the top, the system can easily be
adapted to the situation by wiring up the array in such a way that e.g. the
third and fourth drivers from the top are responsible for the higher
frequencies. In this way, the cabinet can be tuned in small steps to suit the real
situation.

Combining all these technical sophistications in a single cabinet
results in an exceptional speaker system which is predestined for the "natural"
reproduction of music, but not only for that. Whether it is a keenly picked
guitar string, a crisp drum solo, an entire symphony orchestra including an
uplifting, heart-warming string section and a powerful brass department, or the
veritable queen of all instruments, the organ, it will all come across
absolutely authentically, with dynamism and is guaranteed to give you goose
pimples. In the same way, voices, male and female, are reproduced faithfully
including every tiny detail. Each instrument and voice appear to be hovering in
exactly the right place in space, the spatial quality is completely natural and
everything is in the defined position.

Anyone on the lookout for
loudspeakers for high-quality music, who does not intend to make compromises in
terms of frequency response and who is keen on extremely accurate
imaging of the stage or orchestra pit, should take a close look at the GRAND ORGUE. The only preconditions
are a powerful amplifier and generous distances between the cabinets and the
walls to enable the GRAND ORGUE to
develop its capabilities.

HINT: The bass part of the GRAND ORGUE, on its own without the full-range
drivers, connected directly up to an active source without a passive crossover,
acts as an excellent subwoofer and can be used, either singly or as a pair, to
support music-orientated high-end loudspeakers and full-range loudspeakers down
to the lowest bass frequencies and give home theatres the bottom end that they
deserve.

 

 

Technical Data:
Rated power200 W
Maximum power500 W
Nominal impedance Z4 Ohm
Frequency response16–28000 Hz
Mean sound pressure level81 dB (2,83 V/1 m)
Cut-off frequency300 Hz
Principle of HousingDipol, W-förmig gefaltete offene Schallwand
Net volumeentfällt, da offene Bauform
Outer dimension height1200 mm
Outer dimension width276 mm
Outer dimension depth350 mm

 

 

Building instructions

Although the
GRAND ORGUE cabinet consists of many individual parts, it is, in fact,
easy to build because all the parts have only 90° angles and there are no bevels
required. The cabinet consists of two halves which are held together by 16
threaded rods after the drivers have been fitted. The split construction is
necessary because it would not be possible to fit the woofers inside a closed cabinet. To
ensure the two halves are properly positioned relative to each other, we
recommend wooden plugs or a similar locating system.

Initially, the
construction of the two halves is identical. Glue the outer spacers and rear
wall to the outer wall which has the cutout in it for the magnets. To this, glue
the inner wall with the large cutouts for the woofer baskets. This completes
part 2 of the cabinet. On part 1, we now glue the baffle and the rear wall
for the full-range drivers in place and attach the inner spacers,
which completes this part. If you intend to fit the full-range drivers from the
back, as originally planned, we recommend you use screw-in nuts. These have to
be screwed in before the baffle is glued in place because, afterwards, it is hardly
possible to access them. Fitting the drivers from behind is mainly for
appearance's sake. If you do not feel up to milling the oval cutouts exactly,
you can also fit the drivers from the outside. In this case, however, we would
recommend you fit a grille frame with acoustic fabric because the SL 713's
basket is not particularly attractive.

It is also necessary to drill
holes in the outer spacers, preferably before gluing together, to pass the wires
through. The four woofers in each half of the cabinet are soldered in
parallel, and these two groups then connected in series. This involves laying
connecting wires between the enclosures and a connection
from one of the halves to the other. For the full-range drivers, it is
only necessary to drill a hole in the rear wall of the full-range
enclosure.

Since there is no room inside the cabinet for the crossover,
it has to be placed outside. There are no limits to your imagination. You could
make a wooden base for the speaker and hide it there or just use a wooden board
and mount it on that so that it is visible. There is also hardly room for
terminal connections, so you will need to improvise here, too. The gold-plated
screw terminals on the BT 95/75 (or from the
HIGH-END-TERMINAL)
can be unscrewed and fitted in the rear wall, which is an attractive solution in
connection with the wood panelling. Alternatively, the wires can be fed straight
from the driver to the crossover without an intermediate terminal.

To reduce
the wiring to a minimum, the series capacitors (Elko Special 100 µF and MKT 47
µF), which are responsible for splitting the BB array (see above), can be housed
in the full-range enclosure. They can be soldered onto the
appropriate driver direct with short pieces of wire and placed in the bottom of
the enclosure. Experience has shown that it makes sense to solder up all the
eight full-range drivers including the series crossover while they are
outside the cabinet and then to position the drivers and wiring in the cabinet
afterwards. Soldering the wires on with the drivers already fitted would be far
more complicated than outside the cabinet side by side on the
table.

HINT: After the whole construction has been glued together, tie
the two halves firmly using the threaded rods but before you fit the drivers. At
this stage it is possible to sand off any irregularities using an orbital sander
so that the two halves match perfectly.

 

 

 

Inner damping

Fold
two mats of damping
material longways for each of the full-range parts of the cabinet and
push them inside. No damping is required in the woofer enclosures.

 

Component parts list for 1 box

The kit includes all the components listed here but not the cabinet.
A complete kit for this suggestion is available via
www.vc-mailorderservice.de.

 

Full-range speakerSL 713 4 Ohm

8 pcs.

WooferWS 25 E 8 Ohm

8 pcs.

CrossoverGRAND
ORGUE

1 pc.

TerminalBT 95/75

1 pc.

Damping
material
polyester wool

1 bag

Wood screws4 x 20 mm

32 pcs.

cable2 x 2,5 mm²

4 m

cable2 x 1,5 mm²

4 m

 

Cabinet parts list for 1 box

 

parts

size (mm)

quantity

Material: 19 mm MDF or plywood
outer divider mid

331 x 54

6

outer divider top

350 x 54

4

vertical panels

1200 x 350

4

inner divider mid

256 x 92

3

inner divider top

350 x 92

2

rear panels

1162 x 54

2

   
Material: 12 mm MDF or
plywood
baffle

1162 x 92

2

 

 

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