doping

Sure, I know many associate the term "Aquaplas" with the sandy, thick white coating on some models of JBL cones - but I see the name popping up on what appears to be OTHER kinds of speaker cone/surround treatments: - a clear or translucent coating that claims to be "rubbery" or flexible...

Hello Forum, I'm on the hunt for a pair of 4425 monitors and have come across a pair in my area priced pretty well, but the color of the cone is a little darker / shinier than photos of others I have seen. There also seems to be a little separation in the surround seal. Does the color come...

Hi friendly audio people, I'm here to get some advice on restoring a pair of B200 SP1014 speakers. They come from Heathkit AS-9560 cabinets built by my grandfather back in '72, so something of an heirloom. The sound is mostly fine but I decided to give both the amp-tuner and the speakers a...

I just redoped a pair of Utah drivers. The original sealant had completely dried away. This is the first time I did this. But I had an idea before I started and I put that idea into practice when applying. I connected the speaker and ran at low volume a 30 Hz tone, just loud enough to see the...

I have a old set of Braun\Visonik tweeters. I have been playing around with different coatings on the dome and would like to use audio software to analyze the different coatings. I also know very little about analyzing speakers other than how they sound to my ear. I have a decent microphone. I...

In doing this project I couldn't find any real picture guides so I thought I'd make one. My intention is to show how easy this is to do - if you have Snell speakers with cracked tweeter doping, don't worry! It's very easy to fix as I'll explain. Now, I haven't taken measurements and I'm not...