I am selling a clean pair (8/10)of Opera Quinta speakers for a good customer.
Reviews were all excellent on the Quinta's. My pair has a 1" scratch on the bottom right side of one speaker with a 1/4 inch mark above it. The other one is a 9/10. The speakers look great. A wood worker could repair the 2 smalls defects for about $200.00 or less.
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.
All Linea Classica models have their cabinets in shaped MDF, with sides veneered and lacquered
using real wood, while 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 quality acrylic
wadding, which helps eliminate internal reflections and resonance and assists bass frequency
damping. The bass reflex ports are placed on the rear panel.
All models of the Linea Classica Series use the same drive units; the one inch tweeter (the same
used in the Callas SP) is a silk dome unit, with ferrofluid in the air gap and having a wide 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 helps to dissipate heat and
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.
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 6 Ohm loudspeaker under DIN regulations is not less
than 4.8 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 5.9 Ohm (5.54 Ohm
real impedance at 20KhZ) 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 a rarer breed, opposed to prevailing tendencies in loudspeaker design.
Sensitivity is 89Db (2.83V/1 metre). It should be mentioned that this value is obtained at a high and
almost purely resistive impedance. 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 best results can be achieved with any
type of amplifier whether valve or solid-state. The crossover of the Opera Quinta is a `two-and-a-half-way`, with three bass units connected in quasi-series.
System: Floor-standing column two separated reflex loaded chambers
Drive units: 3 x 6.5 inch bass drivers - aluminium cone
1 x 1 inch tweeter - fabric dome
Number of ways: 2 1/2 way
Frequency response: 30-20000 Hz
Cross-over: low pass: nearly-series for woofers 6 dB low pass
24 dB/octave for the high pass. Crossover frequency 2300 Hz approx
Power handling: 210 watt RMS
Recommended amplifier: 10 to 210 Watt RMS or more
Sensitivity: 89 dB/1watt/1 meter
Nominal Impedance: 6 ohm (8 max and 5.95 min from 100 to 20000 Hz with)
At least 20 cm from rear room boundary
At least 20-30 cm from side room boundary
Size: 46.3 x 9.5 x 15.5 inch (h x w x d)
Weight: 75 lbs unboxed, 101 lbs packed
Visa, MasterCard and checks accepted. Read my AudiogoN #1 rated feedback and then call 770-667-5633 with questions or to purchase.
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