Need advice on found speakers and amp - AVS Forum
DIY Speakers and Subs > Need advice on found speakers and amp
docmhale's Avatar docmhale 07:06 AM 09-20-2013
I was cleaning out an old storage locker and found these two items:
Front view

Back view


This amp is an AB design with 2 channels of 200 watts each or 1 bridged channel of 400 watts.

The next item is 4 of these speakers.
Front view

Back view


Here are the specs for the woofers:

Nominal Impedance .................................................................................................................8 ohms
Frequency Response ...................................................................................................35 Hz-3000 Hz
Free Air Resonance (Fs) Frequency .......................................................................................... 35 Hz
Infinite Baffle Resonance Frequency ......................................................................................... 33 Hz
Piston Area (SD) ................................................................................................................. 0.0214 m2
Power Handling .................................................................................................................. 50 W RMS
Maximum Power........................................................................................................................ 100 W
Flux Density (BL)...........................................................................................................................6.77
DC Voice Coil Resistance (RE, ohms) ..................................................................................6.6 ohms
Voice Coil Inductance (LVC at 1 kHz) .................................................................................... 0.93 mH
Equivalent Air Volume (Vas)................................................................................................ 2.7 ft3/76 l
SPL.......................................................................................................................... 87ð 2 db/1W/1m
Moving Mass (Mms).................................................................................................................18.38 g
Electrical Q Factor (QES)..............................................................................................................0.57
Mechanical Q Factor (QMS)..........................................................................................................3.46
Total Q Factor................................................................................................................................0.49
Equivalent Acoustic Volume (VAS)..............................................................................................76.3 l
Mechanical Suspension Compliance (CMS, UM/N)......................................................1174.63 UM/N
Mechanical Mass of Cone Assembly and Free Air Load..........................................................18.35 g
Mechanical Mass of Cone Assembly Only ...............................................................................16.55 g
Peak-to-Peak (Maximum) Linear Excursion...........................................................................2.35 mm
Cutout....................................................................................................................... 7 Inches/17/8 cm
Depth...................................................................................................................... 31/8 Inches/8.0 cm
Magnet Weight ........................................................................................................................9.97 oz.
Speaker Weight.......................................................................................................................33.3 oz.

My question is this, what do I do with them? Can any of you genius's out there come up with a plan to use them as a subwoofer in a home theater setting?

Thanks for looking and the suggestions!

arnyk's Avatar arnyk 07:10 AM 09-20-2013
Quote:
Originally Posted by docmhale View Post

I was cleaning out an old storage locker and found these two items:
Front view

Back view


This amp is an AB design with 2 channels of 200 watts each or 1 bridged channel of 400 watts.

The next item is 4 of these speakers.
Front view

Back view


Here are the specs for the woofers:

Nominal Impedance .................................................................................................................8 ohms
Frequency Response ...................................................................................................35 Hz-3000 Hz
Free Air Resonance (Fs) Frequency .......................................................................................... 35 Hz
Infinite Baffle Resonance Frequency ......................................................................................... 33 Hz
Piston Area (SD) ................................................................................................................. 0.0214 m2
Power Handling .................................................................................................................. 50 W RMS
Maximum Power........................................................................................................................ 100 W
Flux Density (BL)...........................................................................................................................6.77
DC Voice Coil Resistance (RE, ohms) ..................................................................................6.6 ohms
Voice Coil Inductance (LVC at 1 kHz) .................................................................................... 0.93 mH
Equivalent Air Volume (Vas)................................................................................................ 2.7 ft3/76 l
SPL.......................................................................................................................... 87ð 2 db/1W/1m
Moving Mass (Mms).................................................................................................................18.38 g
Electrical Q Factor (QES)..............................................................................................................0.57
Mechanical Q Factor (QMS)..........................................................................................................3.46
Total Q Factor................................................................................................................................0.49
Equivalent Acoustic Volume (VAS)..............................................................................................76.3 l
Mechanical Suspension Compliance (CMS, UM/N)......................................................1174.63 UM/N
Mechanical Mass of Cone Assembly and Free Air Load..........................................................18.35 g
Mechanical Mass of Cone Assembly Only ...............................................................................16.55 g
Peak-to-Peak (Maximum) Linear Excursion...........................................................................2.35 mm
Cutout....................................................................................................................... 7 Inches/17/8 cm
Depth...................................................................................................................... 31/8 Inches/8.0 cm
Magnet Weight ........................................................................................................................9.97 oz.
Speaker Weight.......................................................................................................................33.3 oz.

My question is this, what do I do with them? Can any of you genius's out there come up with a plan to use them as a subwoofer in a home theater setting?

Thanks for looking and the suggestions!

Dustbin the speakers. Low efficiency and no Xmax.
LTD02's Avatar LTD02 10:03 PM 09-20-2013
the peak to peak linear excursion of 2.35 mm is only 1.18mm each way!

that's small for a midrange much less a subwoofer...you'd be much happier with even a budget driver and a good enclosure.

here is about the best bang on the cheap that i am aware of:

http://www.amazon.com/Infinity-Reference-1260w-1200-watt-High-Performance/dp/B0028AVGEO
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