There is.Is there actually any output from the tweeter?
I suspect this is a far likelier cause than capacitor ageing.Dried or drying ferrofluid maybe?
The Vifa D25AG-05 tweeter that Castle was using during this time period was indeed a ferrofluid cooled model...
Looks like it was set to multiply frequency scale by 10, likely do to with the trace being incapable of showing much detail above 20kHz. Fq response range is specified as 2.5 to 35kHz.Surley there's something wrong with that graph. It shows the tweeter rolling off at 4khz!
I'm wondering if I should send it off to get rebuilt or find a replacement. Thoughts?
Have you had the Harlechs for some time?I'm wondering if I should send it off to get rebuilt or find a replacement. Thoughts?
This post on AVforum may give a better idea of what to expect once the face plate is off. Paradigm used a version of this same tweeter with their own custom faceplate.You only have to remove the 4 outer screws to get it out, and remove the 3 inner screws to take it apart. The only worry I know of, is if the voice coil is not self centering. I'd bet it is though.
Scroll down to near the bottom of this page to see what it should look like inside.
http://www.troelsgravesen.dk/C17_II.htm
I've had them for about 10 years. It wasn't until I got a pair of castle knights that I realized how dark they sounded.Have you had the Harlechs for some time?
The reason I ask is that I recall them as being capable of sounding a bit OTT in the lower resisters if not sited carefully and/or if the room were easily excited.
IME, with QWTLs one has multiple sources of bass over a narrow range of very low frequencies, any one or more of which can become doubled or even trebled if the distance from two or more room boundaries happen to be the same.
What version Brio is it, btw?