Sony 1-825-144-11 - 오픈위키

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====== Sony 1-825-144-11 ======
Sony 1-825-144-11

subwoofer scavenged from a HT-BE1

*  dual voice coil
  *  13cm cone (5 1/8 inch)
  *  30W (6Ω)

dual voice coil subwoofer

Dual voice coil subwoofers are a popular choice among car audio enthusiasts who want more flexibility in wiring their sound systems. While typical subwoofers have a single voice coil, dual voice coil (DVC) subwoofers use two separate voice coils, each with its own connections, mounted on one cylinder, connected to a common cone.

Rockford Fosgate subwoofer
Rockford Fosgate's DVC subs can handle lots of power, so you can enjoy bigger bass
The key difference between single and dual voice coil subwoofers is the multiple wiring options DVC subs offer:

* **Parallel**: A dual 4-ohm voice coil subwoofer with its coils wired in parallel presents a 2-ohm load to your amplifier. Since an amplifier produces more wattage at a lower impedance, the parallel connection ensures you'll get the most output from your amp. In the same fashion, if you have a stereo amplifier and two DVC subs, wire both subs for 2-ohm impedance (one per channel) for maximum output.
  * **Series**: Series wiring lets you configure multiple woofers to one amplifier at an acceptable impedance. Wire both coils in series for an 8-ohm impedance, and then wire two 8-ohm subs together in parallel for 4-ohm total impedance (perfect for most 2-channel amps bridged to mono operation). Another example: if you have a high-powered 2-channel amplifier, wire four 8-ohm subs per channel (each channel sees a 2-ohm load).
  * **Independent**: You can wire each voice coil to a separate channel of your amplifier, if you prefer not to bridge your amp. Independent wiring is a nice option if you're wiring two DVC subs to a 4-channel amplifier — one voice coil per channel. Just make sure the signal going to each coil is exactly the same, or the differences will cause distortion.

http://www.crutchfield.com/S-ykHmQvxEtLB/learn/learningcenter/car/subwoofers_dual.html

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