Opera Quinta 2006 (second Series)

Opera Quinta 2006 (second Series)
Quinta 2006 (second series)
In the new Quinta have been replaced with the medium and
tweeter speakers in class, category and grade.
The new tweeter is the D2009 Scanspeak already present in
mouse models of gamma (Tebaldi, Malibran and Caruso). The
two aluminum woofer, great for playing the bass, were
maintained. Even the crossover, preserving the cascade
topology has already been adopted for Tebaldi, was adapted to
the new class of new modell.
The new midrange has annealed polypropylene membrane that
ensures excellent rigidity above the diaphragm in the midrange.
The most interesting about this particular speaker's voice coil in
whose support is plated with copper. This solution has reduced
from 0.63 to 0.25 Hm inductance of the coil. The change in
inductance of the coil, and changes in flow caused by it, are
primarily responsible for the distortion in the midrange speakers
in the dynamic.
Reducing the value of the inductance is reduced and the primary
cause of distortion is unnecessary to reiterate the importance of
reducing the distortion in the midrange.
Even the cabinet, which has the same external dimensions as
the previous model, has been enhanced in particular adotttando
a more effective soundproofing material made from open cell
melamine surfaces shaped like a pyramid, often 10 cm. This is
effective soundproofing from 125 Hz to ensure damping of
normal modes and the complete demolition of the back radiation
produced by significantly improving midrange clarity (definition,
detail).
The new Quinta, although part of the original series, takes a leap
important quality that distinguishes the absolute qialità
reproduction and for value for money that becomes even more
competitive. Opera Quinta is a final speaker: Full extension of
low frequency, capable of reproducing sound important volumes,
dynamic, with a clear and defined midrange and high range
typical of our speakers gamma.
With four Opera Quinta you compose a home theater system
that requires no center channel or sub-woofer.
Opera Quinta 2006 (second Series)
System
The Opera Quinta differs from the previous model of the same name by having a new cabinet, new
components and new crossover. The cabinet is slightly larger than before, with an internal volume
of around 60 litres and is divided into two chambers; the lower chamber, of roughly 40 litres houses
two bass drivers. The upper chamber, of roughly 20 litres houses the upper bass driver. The three
reflex ports are mounted on the loudspeaker`s rear panel. There are 4 gold plated terminal
connectors and the speaker is bi-wirable if required.
Cabinet
All the new models have their cabinets in shaped MDF with sides veneered and lacquered using
real wood, and the remaining sides are finished in leather. The size of the front panel, following
Opera’s tradition, is large enough to hold the loudspeakers. The inside of the cabinet is divided
into two separate chambers, which not only reinforces the structure but also raises the frequency
of the first normal resonance mode. The inside of the cabinet is filled with a good quantity of acrylic
wadding which helps to eliminate internal reflections and resonance and aids bass frequency
damping.
Components
All the models of the Classic Series use the same drive units; the one inch tweeter (the same used
in the Callas SP) is a silk dome unit, ferrofluid filled and having an ample rear decompression
chamber. The qualities of this SEAS tweeter are well known and appreciated. The woofer, also
made by SEAS, was developed specially for this line of loudspeakers. It is a 6.5 inch unit with
18cm chassis, 38mm voice coil, aluminium diaphragm and rubber outer suspension. It has a
dynamic mass appreciably higher than the norm, and an impedance of 4 ohm. Two copper rings
are fitted above and below the T-shaped pole piece, which both reduce distortion and stabilize the
magnetic flux. Finally, the bullet-shaped phase plug in ABS overcomes compression effects
associated with normal dust-caps. It also improves emission at the high-frequency end of the unit`s
range. The cast chassis, of aerodynamic design, is fully open even beneath the inner suspension.
Crossover
In designing the new Classic Series, particular attention has been paid to electrical impedance.
This is to ensure that the loudspeaker will present a load compatible with every type of amplifier.
The minimum impedance for a nominally 4 Ohm loudspeaker under DIN regulations is not less
than 3.2 Ohms at the lowest point of the impedance curve. Opera Quinta adhere to this norm.
The electrical impedance curve of the Opera Quinta is in fact always above 3.2 Ohm and although
not completely resistive it is extremely regular with phase rotations close to zero over a wide range
of frequencies from 200Hz upwards. This ease of drive
makes the Opera Quinta very rare and countrary to the prevailing tendency of the vast majority of
loudspeakers currently produced.
Sensitivity is 89dB (2.83V/1 metre). At Opera we believe that the cost of a loudspeaker should be
considered together with the cost of a suitable amplifier to drive it; it is of little use to have an
attractive price for the loudspeaker if a very expensive amplifier is then required to give good
results.
The Opera Quinta is a very easy loudspeaker to drive, and optimum results can be achieved with
any type of amplifier whether valve or solid-state.
The crossover of the Opera Quinta is a three-way`, with two bass units connected in parallel.
In this way high power handling is obtained together with associated high dynamics and low
distortion.
This configuration has proved to be the most suitable to obtain the desired impedance curve. The
overall acoustic roll-off applied to the top bass unit is in the order of 12Db per octave.
The high-pass filter for the treble unit, apart from a couple of resistors, is a second order
which enables the acoustic frequency of the cross-over to be lifted to a little over 2kHz. The wave
length at the acoustic crossover frequency is therefore equivalent to the distance between the
centres of emission of the top bass unit and the tweeter, which makes the emission very similar to
that of a small two-way loudspeaker.
Room placement
Opera Quinta is a floor standing loudspeaker. It is inadvisable to place the loudspeaker in a corner,
and the recommended distance from side walls is al least 30cm. As always, the best position within
the room will be found by some experimentation. Even though the reflex ports are rear-mounted, it
is sufficient to maintain a distance of just a few inches between the rear of the loudspeaker and the
rear wall.
Because of the impedance module allows – assuming a good amplifier is used – two pairs of
Opera Quinta in serie (two for the right channel and two for the left).
Technical Specifications:
System
Drive units
Number of ways
Frequency response
Cross-over:
Max power handling
Recommended amplifier
Sensitivity
Nominal Impedance
Room Positioning
Dimensions
Weight unpacked
Packed weight
Opera Quinta
Floor standing column – Bass Reflex in 2 separate chambers, rearfiring reflex ports
Finish: wood and leather
2 bass and 1 midrange drive units 6.5” aluminium cone
1 tweeter, dome 1” – silk dome, ferrofluid, decompression chamber
3
32 -20000 Hz
On pcb
12 dB/octave
Crossover frequency 500-2000 Hz circa
200 watt RMS
Minimum 15 Watt RMS
89 dB/2.83 Volt/1 metro
4 ohm (3.2 minimum)
At least 20 cm from rear wall
At least 30 cm from side wall
117.5 x 24 x 39,5 cm (HxLxP)
34 Kg each
35 Kg each
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