Toymods Car Club Inc: Car/Engine Electronics & Audio => FS: 10" Precision Subwoofer. Double Magnet $90!!!

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TRD-ST162
Forums Junkie

Location:
Melbourne
Registered:
October 2003

FS: 10" Precision Subwoofer. Double Magnet $90!!!	Wed, 18 May 2005 14:48

This is a 10" precision Sub.. Jaycar sell the 12" versions but not the 10" anymore.. This is a great driver, Specs are very similar to the 12" version, slightly less... The cone: 4mm thick non-pressed coated paper that can withstand huge excursions with minimal flex or break-up. The magnet: Two 1.41Kg totalling a massive 2.82Kg. The basket: Thick heavy duty cast aluminium with zero flex, even under the most horrendous driving conditions. The backing plate: 19mm thick (most woofers are, on average, 8-10mm). This gives excellent linearity. Pole piece: A flared vent at the rear increases air movement to cool the voice coils. Dual voice coils: Give you 3 different wiring options to best suit your amplifier. Dual 4-ohm voice coils give you greater system wiring flexibility. Connect the voice coils to achieve an impedance that ideally suits your amplifier. Single voice coil mode: Allows you to wire each 4-ohm voice coil to each channel of your amplifier. Eg. when using one woofer with a 2 channel amp. Parallel voice coil mode: Wiring the voice coils in parallel, to present a 2 ohm load, allows you to extract maximum power from a high-current, 2 ohm stable, amplifier. Series voice coil mode: Wiring in series gives each speaker an 8-ohm load. If you wire the two 8 ohm subs in parallel, you get a 4 ohm load that’s suitable to utilise on the bridged output of a 2 channel amplifier. Specifications Voice coil wiring single parallel series Nominal impedance-ohms 4 2 8 Power handling-WRMS 150 250 250 Sensitivity (SPL)-1 Watt@1Mtr 85.5 87 88.5 Voice coil resistance (Re) –ohms 3.7 2.1 7.2 Resonant frequency (Fs)-Hz 24 24 24 Mechanical Q factor (Qms) 3.58 3.67 3.75 Electrical Q factor (Qes) .48 .28 .236 Total Q factor (Qts) .423 .26 .222 Equivalent volume (Vas)-Lt 75 75 75 Cone area – square metres .0487 .0487 .0487 Voice coil diameter – mm 65 65 65 X max (in one direction)- mm 5.5 5.5 5.5 Asking $90 with a 25-30 litre Carpeted box! Sub is in very good condition!!! [Report message to a moderator]

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