JBL 2240HPL 18 inch laagluidspreker - Driver Refurbished gereconed

JBL 2240HPL 18 inch laagluidspreker - Driver Refurbished gereconed

 Driver Refurbished 

let het betreft hier refurbished versie goede chassis voorzien van nieuwe spreekspoel - spider - conus en randen,

deze luidsprekers zijn zo goed als nieuw .

Heeft u zelf defecte luidsprekers van dit type kunnen wij deze voor u repareren indien we hetzelfde type in voorraad hebben ruilen we deze om mits het Chassis in goede conditie is ( niet scheef of losse magneet ) Voor de recone service mail ons hiervoor voor dat u defecte luidsprekers opstuurt voor een offerte 18" High Power, Low Frequency Woofer, 8 Ohm, 600 Watt Overview The JBL 2241H low frequency transducer represents the results of JBL's industry-leading engineering research in high power transducer design. The 2241H signified a major advance in speaker design by incorporating JBL's patented Vented Gap CoolingTM technology1 in an improved Symmetrical Field Geometry (SFG) magnetic structure. To increase power handling while reducing power compression, JBL engineers created a unique method called direct voice-coil-to-air heat dissipation (Vented Gap Cooling). This process pumps air through the magnetic gap and directly over and around the voice coil to provide immediate heat transfer and reduction in operating temperature - a direct improvement in power compression. Through the use of computer-aided magnet optimization and analysis techniques, JBL engineers were able to optimize both magnet weight, flux density and field saturation resulting in a significant reduction in harmonic distortion. This new magnet structure offers much of the weight advantage of rare earth magnet structures without the higher cost. Specifications: Nominal Diameter: 460 mm (18 in) Rated Impedance: 8 ohms Power Capacity: 600 W continuous pink noise Sensitivity: 98 dB SPL, 1 W, 1 m (3.3 ft) Frequency Range: 30 Hz - 3 kHz Power Compression:at -10 dB rated power (60 W): 0.8 dBat -3 dB rated power (300 W): 2.6 dBat rated power (600 W): 4.3 dB Distortion:2nd harmonic: ™ 1.0%3rd harmonic: ™ 1.0% Highest Recommended Crossover: 800 Hz Recommended Enclosure Volume: 140-340 l (5-12 ft3) Effective Piston Diameter: 397 mm (15.6 in) Maximum Excursion Before Damage (p-p): 40 mm (1.6 in) Minimum Impedance: 6.0 ohms +/- 10% @ 25C Voice Coil Diameter: 100 mm (4 in) Voice Coil Material: Edgewound aluminum ribbon Voice Coil Winding Depth: 19.05 mm (0.75 in) Magnetic Gap Depth: 8.1 mm (0.32 in) Magnetic Assembly Weight: 6.8 kg (15 lb) Bl Factor: 19.2 N/A Effective Moving Mass: 0.145 kg Positive voltage on BLACK terminal gives forward diaphragm motion.