SWR TRIAD 15" SPEAKER IMPEDANCE.

[Carld]

Hi, I have to replace the 15" speaker in my Triad. Can anyone tell me the impedence of the just tge speaker. The cab as a whole is 4 ohms but that doesnt mean the 15" is. There's no info on the speaker itself. Thanks.

[iiipopes]

I have a Triad. Why are you replacing the 15 speaker? If the voice coil is blown, and that's the reason you're replacing the 15, that is a problem. If the voice coil is intact, you can measure the DC resistance of the coil and derive its impedance: for example, if the voice coil measures @ 2.8 to 3.5 ohms or so, it's a 4-ohm nominal impedance speaker.

Also, this blog link has a pdf (about half way down) of the circuit in one of the postings, which indicates the 15 is hard wired full range. That would also indicate that the 15 is also probably a 4-ohm driver.

[url="http://music-electronics-forum.com/t18691/"]http://music-electronics-forum.com/t18691/[/url]

Unfortunately, it's not quite as simple as simply picking a 4-ohm driver. The power rating and the compliance for the size and porting of the cabinet are also important.

Edited December 11, 2012 by iiipopes

[stevie]

I agree with iiipopes on this one. The bass driver in a 4-ohm cabinet has to be 4 ohms unless there are more than one. Your mid and HF drivers could easily be 8 or even 16 ohms but it's the woofer that counts.

[Carld]

Thanks, the voice coil is blown and is doomed! I'll get a 4ohm kappalite LF I think. The one that SWR are replacing it with are hard to come by in the UK and ive had a kappalite and it really does tge business. Thank you both for youelr advice.