830500

Product Information

830500

A. Aluminum Spacer B. Black Anodized Voice Coil C. Stacked Magnet System D. Distortion Reduced Motor E. Vented Cone F. Nomex® Spider G. Rubber Surround H. Fiber CompositeCone I. Rigid Cast Aluminum Basket The aluminum spacer serves as heat sink for the coil to reduce power compression. The 2-inch 4-layer voice coil is wound on thick black anodized aluminum for improved heat dissipation. The twin stacked magnetic system is optimized by FEA (Finite Element Analysis), to create a symmetric powerful magnetic field in the air gap, and provide space for the 44 mm max excursion of the voice coil. A long 4 layer voice coil normally results in high self induction and impedance varying with excursion. Its many ampere turns react on the magnetic field in the air gap. These two main factors causing motor distortion in subwoofers are practically eliminated by the combined impact of the Aluminum Short Circuiting Ring (D) and the Aluminum Spacer (A) on the pole piece. At the same time they both contribute as heat sinks for the voice coil, reducing power compression. The result is unbelievable clean bass reproduction. To eliminate compression under the dust cap the cone is vented by 8 large holes. This way the coil is cooled and there is no need for a bore in the pole piece. The spider is made of high tech Nomex® material. This material is chosen for its high rigidity and long term stability. The suspension will stay in shape for a very long time under heavy load. The surround is made from SBR rubber because of the wide operating temperature, low creep and long term reliability. The cone is molded from a propriety air dried wood free pulp with a blend of Nomex®, Kevlar® and glass fibers bonded together by deep impregnation with polymers. This creates an ultra stiff and relatively light cone that will stay stable even under very large sound pressures. The rigid cast basket with an aerodynamic profile provides the necessary sturdy base for the magnet structure and suspension and allows for the 44 mm max excursion of the cone. The spider is ventilated to achieve the lowest possible compression and allow air to flow freely to create a cooling effect for the voice coil. ------------------------------------------

269 SWR 51 147 NX ALP 4L XLS XTRA-LONG-STROKE

 By introducing the new range of Xtra Long Stroke (XLS) subwoofers, Peerless has pushed the performance limits for subwoofers to a new level. The XLS/subwoofer range will fulfil every demand for deep clean bass reproduction like active THX home theater and Dolby Digital subwoofer applications. In the design, the emphasis has been put in achieving extreme deep bass, long time reliability, high power handling, and very low distortion - even under very large sound pressures. The 12" XLS is suitable for several different design configurations, from small passive radiator assisted subwoofers to classical and car applications. This is a new range from Peerless to suit the unlimited demands of bass hungry enthusiasts in home cinema or audiophile. Double magnet. Cast iron frame. Large rubber surround. Gold binding posts. Code 830500 Parameters: Free air Common Baffled Nominal impedance Zn (ohm) 8 Minimum impedance/at freq. Zmin (ohm/Hz) 4.7/106 Maximum impedance Zo (ohm) 64.2 DC resistance Re (ohm) 3.5 Voice coil inductance Le (mH) 4.2 Capacitor in series with 8 ohm (for impedance compensation) Cc (μF) 38 Resonance Frequency fs (Hz) 18.1 18.1 Mechanical Q factor Qms 3.70 3.70 Electrical Q factor Qes 0.21 0.21 Total Q factor Qts 0.20 0.20 F (Ratio fs/Qts) F (Hz) 90 Mechanical resistance Rms (Kg/s) 5.12 Moving mass Mms (g) 166.3 166.4 Suspension compliance Cms (mm/N) 0.46 Effective cone diameter D (cm) 24.4 Effective piston area Sd (cm²) 466 Equivalent volume VAS (ltrs) 139.2 Force factor Bl (N/A) 17.6 Reference voltage sensitivity Re 2.83V 1m at 106 Hz (Measured) (dB) 90.6 Voice coil diameter d (mm) 51 Voice coil length h (mm) 33 Voice coil layers n 4 Flux density in gap B (T) 1.04 Total useful flux (mWb) 2.50 Height of the gap hg (mm) 8 Diameter of magnet dm (mm) 147 Height of magnet hm (mm) 35 Weight of magnet (kg) 2.42

830500

Price: $329.00

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