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Old 21st May 2010, 01:56 AM   #1
sol is offline sol  United States
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Location: Boston
Default Subwoofer parts: 150w plate amp, 8" driver, flared port

For sale: all you need to make a small subwoofer. You make the box.

150w plate amp with built-in bass boost EQ.

Flared port

8" dual-coil woofer

Components were purchased to create a small subwoofer in vented enclosure for moderate to low listening levels. The plate amp is a discontinued model purchased on closeout. It has a built-in bass boost EQ with 5db of boost at 35 Hz. Usual plate amp features are included: built in variable frequency low pass filter, phase switch, and both speaker and line level inputs.

Amp and speaker have been tested and work OK, but this project never got off the ground so they are in like-new condition.

Modeling this with in a vented box, counting the plate amp bass boost, I get flat response to about 30hz.

Output would be limited as the driver has only 4mm xmax. But the build quality of the driver is quite good. Zaph had a project in the archives using this woofer, and had very good things to say about it.

I'm asking $75 for the bunch, with free shipping to the lower 48 states. USA only, please.

Driver Specs:
MCM Audio Select Part #: 55-2185
Features:
Aluminum cone Rubber surround Synthetic dust cap Stamped steel basket 1.4" copper voice coil on an aluminum former 30oz. magnet
Specifications:: Power Capacity: 70W/100W RMS/peak (per coil) Sensitivity: 87dB (W/M) Impedance: 8ohm (per coil) Re: 6.0ohm (per coil) Le: 0.59 (per coil) Frequency response: 45Hz~9KHz Fs: 45Hz Qts: 0.45 Qes: 0.50 Qms: 4.24 Vas: 17.8 (liters) Xmax: 4.1mm
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Old 21st May 2010, 01:58 AM   #2
sol is offline sol  United States
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Default Photos of the items

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