1.5 Ohm driver any good?

[Surtsey]

The Sony specs actually say 3Ω.
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Manufacturers do this so their system appears to incompatible with others systems.

This guy's a complete moron Blowing Up 2 Sony Subwoofers - YouTube

He describes them as weak but is too stupid to realise they are out of phase. He's not smart enough to know the front covers pull off.
https://www.youtube.com/watch?v=5G1e_pKXrfU

 

[Skylar88]

I come across Sony subs like this at thrift shops all the time. Last year I picked up a couple to measure, out of curiosity. Not the exact same as yours but similar. The lowest DCR I've measured is 2.6 ohms. But even then, that woofer didn't dip that low in it's impedance curve. These "sub"woofers measure terribly though. High Fs(70-90hz), high Q(0.7+)

Thanks for this info. It may not be a true "sub" driver, but this combination of driver and cabinet went down to about 39Hz in a frequency sweep test. It's quite enjoyable to listen to and certainly good enough for now, or at least till I can get a proper sub.