hello,
I bought some 8inch speakers for my stereo, they were sold as philips 800 ohm.
i have wired them in place of my 6 inch built in ones and am getting next to no sound, really quiet,
first i tried plugging them into my extension plugs and the sound was even quieter.
the 8" read 3.4 ohms each.
my original working 6" read 590 ohms,
have i been ripped off and sold broken speakers or are these just 4 ohm speakers some one has sold as 800 ohm? they were only $20 + postage, are they junk? they move smooth and the polarity is fine with 1.2v.
I bought some 8inch speakers for my stereo, they were sold as philips 800 ohm.
i have wired them in place of my 6 inch built in ones and am getting next to no sound, really quiet,
first i tried plugging them into my extension plugs and the sound was even quieter.
the 8" read 3.4 ohms each.
my original working 6" read 590 ohms,
have i been ripped off and sold broken speakers or are these just 4 ohm speakers some one has sold as 800 ohm? they were only $20 + postage, are they junk? they move smooth and the polarity is fine with 1.2v.
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> sold as philips 800 ohm.
> read 3.4 ohms each.
I think you got it: these are 4 Ohm speakers.
If that is the "800 Ohm" Philips radio, it will strain and be unable to put real power in an impedance 1/200th what it was designed for.
As all the 800r Philips speakers are getting old, it may be time to look at 800:4 Ohm 1 Watt transformers. Hammond's multi-tap comes to mind.
http://www.hammondmfg.com/125SE.htm
125ASE, connect radio to BRN and BLU, connect 4 Ohm speaker to WHT and BLK. This is nominally a 1250:4 transformation. Bass response will be a bit better than expected, treble response should be OK.
> read 3.4 ohms each.
I think you got it: these are 4 Ohm speakers.
If that is the "800 Ohm" Philips radio, it will strain and be unable to put real power in an impedance 1/200th what it was designed for.
As all the 800r Philips speakers are getting old, it may be time to look at 800:4 Ohm 1 Watt transformers. Hammond's multi-tap comes to mind.
http://www.hammondmfg.com/125SE.htm
125ASE, connect radio to BRN and BLU, connect 4 Ohm speaker to WHT and BLK. This is nominally a 1250:4 transformation. Bass response will be a bit better than expected, treble response should be OK.
You measured the impedance? If they measure 3.4 then they are likely nominal 4Ω speakers.
They look pretty good for $20, but you can’t drive them with an amp designed to drive 800Ω
Google turns up nothing relevant on the model number
dave
Edit: PRR beat me to it 🙂
They look pretty good for $20, but you can’t drive them with an amp designed to drive 800Ω
Google turns up nothing relevant on the model number
dave
Edit: PRR beat me to it 🙂
If believe the 800 ohm speakers has an "A" in the part no, like AD9710 AM which is an 8" with 800 ohm coil while AD9710 M is the same speaker with 8 ohm coil, as far as I can see while checking on the net it seems to be same for other Philips drivers, (an A is equal to 800ohm). So your drivers are probably not 800 ohm
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