Help Me Get My Speakers Doped

[admin]

No, I am not arranging a conference. But I did stay at a Holiday Inn Express last night.

I would like to know how I can dope my 12 inch speakers in my 1967 Bassman. When I bend high frequency notes or strike notes more forcefully at higher volumes (not quite 11 but high enough) my speakers start to bang and thud. Has anyone successfully doped there speakers before and what did you use to achieve you good results?

I have heard that varnish is used around the outer edges of the speakers, but how much, where and what type of varnish?

[soundmasterg]

Honestly Peter, the best approach is to email Ted Weber and ask him, or post a question about it up on his forum as it comes up there all the time. I think he even has info on how to do it somewhere on his website. http://www.tedweber.com

The usual reason to dope is to eliminate ghost notes or cone cry, which are out of tune notes that follow around every note you play but are out of pitch and lower in volume to the original note. There is a specific white glue that is used when reconing speakers that would be the best to use, but it comes in a larger container than you would use for just one application, and dries up quickly once opened. (within a year) You can get it from speaker reconers and perhaps from http://www.tubesandmore.com . Any glue that dries and still stays flexible would be ok to use, but the thinnest that does the job would be the best.

Take a look at Ted's site as it is all there either on his site or the bbs, or by emailing him.

Greg

[rictified]

What do you mean, bang and thud Peter? Are the cones actually striking the back of the basket? I have only heard a speaker bang and thud when it was completely blown and that was usually with a bass guitar. Does it rub? Old Fender speakers aren't very good at staying together with high power levels and many of them are blown or halfway there at this point.
Varnish would probably stop that but at the expense of limiting the bottom end response of your cab and it would end up sounding boxy I would imagine.