Infinity Kappa 9 S EMIT not functioning or Hearing Loss?


First post after lurking for a couple years, so please be gentle.

I recently acquired a set of Kappa 9s. I know, I know, "amp killers," "poor design," etc. I'm having fun with them for now, so I'm willfully overlooking that part. Currently bi-amped with Audio Research Dual 75 running the top end. A more "budget" 2 channel solid state amp I pillaged from my home theater setup is temporarily running the bottom end with the bass extension of the 9s switched to off.

Question. Is it possible the frequency range of the S EMIT up top is out of my hearing range? I play test tones and the top of my range is somewhere between the 14kHz and 15kHz, but I don't think it's coming from them, rather the EMIT below. This is the case with the S EMIT on BOTH speakers. 

I used my 8 year old as a test subject and he said he can definitely hear sound emanating from the top S EMIT, starting around 19kHz. Being the skeptic I am, can I trust that he's hearing from the S EMIT and not the EMIT below?

I thought the S EMITs were crossed over around 10kHz, so I should hear something from them. I'm really far from a technical wizard or electrical expert. Physically digging into and testing crossovers and whatnot is a bit over my head.

There's another forum that has seems to have a more Infinity focused following, but I can't seem to create an account or search the site for whatever reason, so I'm turning to the experts here.

Richard

P.S. I've learned SO MUCH from you all, reading most of the top discussions delivered to my inbox every night for the last 2+ years.  

 

 

richardt9000

My wife had been out of town and just confirmed something is not right. Slight buzz/rattle out of one when bass hits (not playing loud) and muted jumble out of the other - certainly nothing resembling "sparkle" @ervikingo described. Strangely, I can now hear it, but I was listening to actual music this time, not test tones.

Not fun, but I guess it's part of the vintage game. I stopped modding cars not long ago because I was tired of working on them when stuff inevitably met their limit. At least that I could do that myself. Time to start learning/tinkering with audio.

@richardt9000 

Before you go into too many crazy steps, swap speakers left to right and see iof the particular noise stays with the speaker (to rule out a system problem other than the speakers)

That is some sage advice, @ervikingo, Thank you! Hopefully I can get back to playing with my toys before next weekend.

Make certain that all of the screws on the driver frames are tight. That needs to be done on a regular basis.

@richardt9000 You'll get it worked out.  The technical skills of even a mediocre backyard mechanic are sufficient to work on speakers (amps and stuff, not so much).

If you can work on classic cars you can figure out any speaker crossover/driver issues without any problems.  There's a website out there with the Infinity crossover schematics.  I don't have the link handy since I sold all my Classic Infinity stuff.

Those are nice classic speakers and worth the effort.  Best of luck.