My wharfedale titan 15 passive loudspeaker only sounds the tweeter but not the driver

http://www.manualslib.com/manual/623310/Wharfedale-Pro-Evp-S10.html

The tweeter has burned out and cannot be salvaged. I also own a pair of (ex) Melton 2s. In the beginning Wharfedale were good at supplying spares (see www.wharfedale.co.uk for contact info and advice). A few years ago after my cat destroyed the 12 inch unit in one, i invested in new insides, including state of the art 12 inch woofers, 4 inch mid range and 1inch tweeters with a good 3 way crossover. The cabinet is great so consider asking a techie friend to do this for you. Please don't just cut out and connect to amp speaker wires! You will get terrible sound and risk ruining both amp and speakers! Best regards Karl ([email protected])

Information I find online says it an Active Subwoofer, so that introduces its own amp as a possible source of the symptom. If there is another version of this model that's passive, all the more reason to believe the amp is the problem because passive speakers don't spontaneously emit sounds.

If there was a physical reason for the crackling I would think more power would make it worse or blow it up.

A poor sub signal cable connection might explain low current anomalies if random noises are entering the signal path.

Make sure the signal, speaker and power cables are not aligned parallel and close to each other.

you should first try if the driver is really gone or not, maybe it's just a wiring problem, also there can be something wrong with the cross-over network. Check the tweeter with a multimeter, if you don't see something between 2-16 ohms, you need a new one (or two, you probably won't be able to find the original part, so you'll have to change both left and right channel drivers) but if you see the desired impedance on the meter, check the internal wiring, crossover solder joints, capacitors, etc. I hope this helps.

big red
some pliers and a philips screw driver

Hi cw10k

Thats odd. The only passive radiators I have seen over the years have been the same size as the bass driver. They need to be this way to provide the correct tracking of the bass driver. Your speakers sound more like a a 3 way system that may have been modded. Unfortunately they pre-date the internet by the looks of it :) I cant find any info for them, and from my recollection. Kenwood never made anything notable in loudspeakers. I suggest checking the crossover of the speakers to see if they look original, or if indeed they are 3 ways. If there is only a capacitor to the tweeter, then they were never meant to be performance loudspeakers,and probably came with a system of sorts. Keeping in mind the cost of replacement drivers to do upgrades to this sort of gear, may make them uneconomic to repair or upgrade. In Australia(they do deliver world wide) you can get passive radiators from Speaker Bits
Got any thoughts on that. :)

regards
robotek

Tweeters for Valdus 500 see www.signalsuk.com

Hi bertsteenrt

Can you check the resistance of the HF driver(tweeter). If it is open it will need a new diaphragm. Most of these speakers use a lamp to act as protection for the HF driver. Sometimes these lamps fail. You will need to pull the horn out of the cabinet to check, and the rear connection panel off to get access to the crossover where the lamp is located. Get back to me here and I can talk you through fault finding the speaker.

regards
Graeme

The tweeters are probably blown, i had the same problem.
You can test this by placing the cable on the dismanteled crossover at the back of the speaker. colour blue/yellow.
No high volume please.
See http://www.hometheatershack.com/forums/diy-speakers/4549-wharfedale-modus-one-six-crossover-pics.html
for pictures.
If the tweeter is blown it can be dismanteld with the aid of a screwdriver, horizontally.
Place it between the tweeterbowl and the ring which has the mark wharfedale on it. The tweeter comes loose. On second hand sites you can buy little speakers, like modus one or two's with the same tweeters for a good price and put them on your larger speakers.

This how i repaired 2 of my 4 modus eights.

good luck Danny Mol
the netherlands