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Gittin old ain't for sissys.

I can't hear above 11Khz. :-{

I picked up a pair of Pioneer HPM 700 speakers that a neighbor threw out. I connected it to my signal generator to verify operation of all speakers, it a 4 way speaker. The tweeters are not functional, and I had a hard time verifying operation of the super tweeters. Once I got past

11kHz, it has my hearing that was non functional. Both super tweeters are ok. The woofers need to be refoamed, I'd like to make the repair, but I need to find the tweeters before I spend time and money to refoam the woofers. The tweeters show up on ebay occasionally.

Mikek

Reply to
amdx
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I used to hear 22K, but I'm down to maybe 12 now, fortunately still at average sensitivity, in spite of a lifelong love of power tools.

There's not much to hear above 10K anyhow.

Reply to
John Larkin

No. One of my 1920s books describes a super-regen designed to oscillate at 10kHz, and basically says don't worry about it its above audio frequency. From my experience with a couple of 20s speakers I suspect it was well above speaker frequency limits.

NT

Reply to
tabbypurr

"high frequency sound teenager dispersal device" it's a thing

speakers playing sounds around 13kHz so teens won't hang around the wrong places in malls etc.

-Lasse

Reply to
Lasse Langwadt Christensen

Yea, I've heard about them. When my daughter was living at home, she complained about the 15,734 hz noise coming from one of our tv's.

Mikek

Reply to
amdx

Ahh yes. I remember being able to hear the 15.750 kHz of the old B&W TVs...

May I tweet you to a woofer ?

boB

Reply to
boB

Ditto. Join the club.

Reply to
Cursitor Doom

ITYM 11kHz

Cheers

--
Syd
Reply to
Syd Rumpo

Eh?

Cheers

Phil Hobbs

-- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203 Briarcliff Manor NY 10510

hobbs at electrooptical dot net

formatting link

Reply to
Phil Hobbs

I used to be able to tell if someone had a TV on in the house by walking by on the sidewalk. I can't anymore. ;-)

Reply to
krw

Yes I did, and I usually get that correct.

Mikek

Reply to
amdx

probably all LCD screens anyway.

Reply to
Chris Jones

ITYM = I Think You Mean or Is That Your Mom

Reply to
Kluge

Yes, I could do that. Those flybacks must have been LOUD.

--

John Larkin         Highland Technology, Inc 
lunatic fringe electronics 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

;-)

Reply to
krw

I was feigning deafness.

IOW, in the words of the inimitable Senator Claghorn, "'s a joke, son, jes' a joke."

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC 
Optics, Electro-optics, Photonics, Analog Electronics 

160 North State Road #203 
Briarcliff Manor NY 10510 

hobbs at electrooptical dot net 
http://electrooptical.net
Reply to
Phil Hobbs

Classic kid joke:

Woman: Sir, there's a banana in your ear!

Man: Speak up! Speak up! There's a banana in my ear!

--

John Larkin         Highland Technology, Inc 
lunatic fringe electronics 

jlarkin att highlandtechnology dott com 
http://www.highlandtechnology.com
Reply to
John Larkin

I do remember when i was a kid, hearing most TVs screaming away; some were very annoying.

Reply to
Robert Baer

International Tournament of Young Mathematicians.

Reply to
Robert Baer

The now defunct 405 System-A (used e.g. in UK) had a 10.125 kHz horizontal frequency.

Reply to
upsidedown

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