Low Resonance Cabinet We have gone to great pains to create a cabinet design that minimises the radiation of sound energy through its panels. The smearing that this would otherwise cause would degrade the loudspeaker’s ability to resolve fine detail, which is essential in order to produce a sense of realism. The PQS 302’s cabinets are constructed from heavy panels of MDF with cross bracing fitted to critical points within the structure. To minimise residual vibration, Hawaphon damping sheets are attached to the inside face of each panel. This is a polymer sheet containing a matrix of small cells filled with very fine steel shot and was originally developed as an anti-surveillance measure for use in military and government buildings. It adds mass to the panel to reduce the resonant frequency and the ability of the shot in each cell to move against each other provides a very effective way of converting vibration energy into heat. Hawaphon achieves a broadband attenuation of structure-borne sound of more than 50dB, which is a remarkably high figure. To damp resonances of the air within the cabinet, the whole of the inside of the cabinet is lined with a 1cm thick layer of high density felt. This is achieved by fitting pieces of felt that are precisely cut to fit pqs302_3each panel, rather than just inserting a roll of felt into the cabinet. Our approach takes longer and costs more, but we believe it produces a superior result. Versatile Crossover The crossover provides a wide range of adjustment to allow the PQS 302 to be optimally set up to suit the user’s listening room. The high frequency level may be adjusted over the range -2dB to +4dB in 4 steps and the low frequency level may be adjusted over the range +10dB to 0dB in 3 steps. Both controls are facilitated by high quality jumpers located on the loudspeaker’s rear panel and may be quickly and easily adjusted. Hand Finished for the Ultimate Quality The PQS 302 is available in the customer’s choice of select, hand matched hardwood veneers. These are carefully applied to the MDF panels prior to the construction of the cabinets. This method results in some wastage of material and thus adds to the manufacturing cost, but produces the finest possible furniture grade finish. A multi-layer lacquer coat, hand polished to a high lustre finish, is available as an optional extra. Please see the Finishes page for more details. Special Order Version A special order version of the PQS 302 is available with a laminated carbon fibre reinforced cabinet. Multiple layers of bi-directional, resin impregnated carbon fibre are applied to the cabinet’s panels using techniques originally developed for the aircraft industry. A multi-layer lacquer is then applied and hand polished to a high lustre. This produces a cabinet that is immensely strong, as well as being practically free from resonances within the audio frequency band. This further increases the already very high level of transparency achieved by the PQS 302. This version is fitted with carbon fibre DDD drivers, which extend the frequency response to 24,000Hz and the maximum output level to 112dB.
Magas minőségű alkatrészek Igen
Válogatott alkatrészek Igen
Állítható hangváltó Igen
Rendszer (hangolás módja) zárt
Sugárzási irány 360 fok
Kabinet anyaga MDF
Kabinet burkolat anyaga furnér / fényezett
Csatlakozó típusa WBT
Kialakítás kapcsolható hangváltó
Felépítés (átviteli sávok száma) 2-utas
Keresztváltó-frekvencia (Hz) 170
Impedancia (Ohm) 3
Frekvencia átvitel (Hz) 26 - 24000
Terhelhetőség (névleges / zenei) W 400 / 700
Érzékenység (dB) 87,7
Hangszórók száma (db) 4
Mélysugárzó átmérője (mm) 2 x 300
Méretek (szélesség x magasság x mélység - mm) 530 x 1400 x 730
Tömeg (csomagolás nélkül - kg/db) 115
Láb / Tüske Igen
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