You will find all speakers have a widely varying impedance curve in practice. Although "nominal" figures are quoted, the impedance if plotted will be up to perhaps as high as 20 ohms and maybe as low as 4.
I would hazard a guess and say the Wharfedales are possibly more honest in there impedance rating than many of todays speakers. For example my own B&W's are called an 8 ohm speaker. In practice they actually dip to 3 ohms at certain frequencies.
You won't have any issues at all driving the Glendales from 99.9% of the amps available.
I would hazard a guess and say the Wharfedales are possibly more honest in there impedance rating than many of todays speakers. For example my own B&W's are called an 8 ohm speaker. In practice they actually dip to 3 ohms at certain frequencies.
You won't have any issues at all driving the Glendales from 99.9% of the amps available.
The Glendales may be a 4 to 8ohms speaker.
If this is the case then these would be a 4ohms bass/mid drive unit and a 8ohms treble drive unit.
When combined via a crossover the averaged impedance can be around 6ohms.
But the amplifier sees the 4ohms bass/mid unit as the dominant load impedance. The treble drive unit has little effect on the work that the amplifier has to do.
You can measure the DC resistance of the Glendale to see whether it has a 4ohms or a 6ohms bass/mid drive unit.
Expect 2r5 to 3r5 for a 4ohms driver or 4r5 to 5r5 for a 6ohms driver. There may be an inductor in series with the driver and that will increase the apparent resistance. If you have a series inductor and you read/measure ~4r0 then the Glendale does not have a 6ohms bass/mid.
The outcome from all this is, that an amplifier rated to drive a 4ohms speaker is good for a 6ohms speaker and for a 4 to 8ohms speaker and better still for an 8ohms speaker.
If this is the case then these would be a 4ohms bass/mid drive unit and a 8ohms treble drive unit.
When combined via a crossover the averaged impedance can be around 6ohms.
But the amplifier sees the 4ohms bass/mid unit as the dominant load impedance. The treble drive unit has little effect on the work that the amplifier has to do.
You can measure the DC resistance of the Glendale to see whether it has a 4ohms or a 6ohms bass/mid drive unit.
Expect 2r5 to 3r5 for a 4ohms driver or 4r5 to 5r5 for a 6ohms driver. There may be an inductor in series with the driver and that will increase the apparent resistance. If you have a series inductor and you read/measure ~4r0 then the Glendale does not have a 6ohms bass/mid.
The outcome from all this is, that an amplifier rated to drive a 4ohms speaker is good for a 6ohms speaker and for a 4 to 8ohms speaker and better still for an 8ohms speaker.
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