6.5" and 8" Sony Subwoofer Drivers from Sony All in one HT Systems - diyAudio
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Old 24th February 2010, 07:24 PM   #1
form109 is offline form109  United States
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Default 6.5" and 8" Sony Subwoofer Drivers from Sony All in one HT Systems

The 8" is From a Sony Powered Subwoofer

the 6.5" is From a Sony Passive Subwoofer

the 8" is abit more Usable...since its 8 Ohms

the 6.5" is 1.5 Ohms...where can i Find an Amp thats Stable at that low of an Ohm Rating?

(BTW does anyone else think the 6.5" looks a little bit like a TB? (Left)

not planning to throw these away...nice that they have Rubber Surrounds.
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Old 24th February 2010, 08:32 PM   #2
oublie is offline oublie  United Kingdom
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Are you sure the 6.5 is 1.5 ohm? i.e. have you measure the resistance of the drivers? The reason i'm asking is i have an old bass reflex from a sony surround system (still have the rest of the gear as well) it says impedence 1.3 ohm on the back of the box but i found this pretty hard to believe so i measure the driver and found it to be 3.3 ohm so its probably a 4 ohm speaker.
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Old 24th February 2010, 08:50 PM   #3
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So what made you pull these speakers out of their enclosures?
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Old 24th February 2010, 09:18 PM   #4
form109 is offline form109  United States
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Quote:
Originally Posted by BP1Fanatic View Post
So what made you pull these speakers out of their enclosures?
the 8" was Pulled out to upgrade the Sub with a Higher Quality Driver and Amp.

the 6.5" is for the Same Reason...
besides...spare drivers.

Quote:
Originally Posted by oublie View Post
Are you sure the 6.5 is 1.5 ohm? i.e. have you measure the resistance of the drivers? The reason i'm asking is i have an old bass reflex from a sony surround system (still have the rest of the gear as well) it says impedence 1.3 ohm on the back of the box but i found this pretty hard to believe so i measure the driver and found it to be 3.3 ohm so its probably a 4 ohm speaker.
No way to test it for sure...prehaps it isnt 1.5 Ohms

do they even make amps that will handle a Speaker who's OHM Rating is that low?
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Old 24th February 2010, 11:26 PM   #5
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Many automotive amps can handle 2 ohm loads very well - not so with most normal consumer amps, usually anything lower than a 4 ohm will cause severe overheating and put them into thermal shutdown mode within minutes
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Old 1st March 2010, 04:32 AM   #6
form109 is offline form109  United States
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Quote:
Originally Posted by oublie View Post
Are you sure the 6.5 is 1.5 ohm? i.e. have you measure the resistance of the drivers? The reason i'm asking is i have an old bass reflex from a sony surround system (still have the rest of the gear as well) it says impedence 1.3 ohm on the back of the box but i found this pretty hard to believe so i measure the driver and found it to be 3.3 ohm so its probably a 4 ohm speaker.
Yeah i think the 6.5 is 4 ohms...but why do they list it as 1.5 Ohms?
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Old 1st March 2010, 06:22 AM   #7
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Because someone that has managed to get it out of the box will have some knowledge of speakers etc, and then know that a 1.5ohm speaker isn't a good thing to use with a standard amp.

Still, some PA gear is rated down to 2 ohms. So is the amp7 from 41Hz.com
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Old 1st March 2010, 03:14 PM   #8
GM is offline GM  United States
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At typical HIFI/HT power requirements there's inexpensive prosound amps that's stable into a nominal 2 ohm load, so shouldn't have a problem with these, though I too seriously doubt they're < 4 ohms nominal and probably 8 ohms since few (no?) mainstream consumer receivers are rated 4 ohm. I mean they could have made special high current capability woofers/amps for their HTIB systems, but the added cost doesn't seem doable to me some of these system's low 'street' pricing.

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