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Speaker Screech/Hiss?

toxcrusadr said:
From sql's post: "look at cartridge alignment, stylus wear, stylus cleanliness, and tonearm issues (bearing play especially)." How old is the TT, did you buy it new, any idea how many hours on the stylus? Do you clean the stylus now and then? Etc.
Click to expand...

I bought the TT “new”. It was owned by someone else but never used or taken out of the box. I clean the Stylus after ever play of a record using a kit I bought from a record store near me.
 
You have the EQ plugged into a tape loop right? Just switch off that loop to remove it from the circuit. However you normally do that.
 
galactech said:
So i picked up some vintage B&O speakers off of the Facebook marketplace from the 60s. Im in love with their colorful sound and the sonic clarity they give me. Ever since i got them ive been using them over my KLH-17's (mostly for harmonic testing but also because i love them), and ive noticed a minor problem with them during my listening sessions.

Sometimes when I listen to my records, at certain highs my tweeters sort of screech. It depends on the music, the vast majority of the time it doesn’t do that. Folk music or soft pop is not affected at all by this problem. Maybe once On a certain song for a few seconds and always at the same parts (as in - this hiss is consistent at the same sections of certain songs, and only during those sections). I still enjoy the speakers as well as listening to music on them, I’m just wondering if their is anything I should be worried about with these. I believe this hiss is coming from my tweeters.

Speakers are Beovox B&O Type M

[Here’s an audio sample. It doesn’t overpower the music per se but it’s noticible.](
)

as ive said before, when I play some music that has less high like Sufjan Stevens, Ambient music or other Electronic albums this problem is nonexistent. It occasionally happens when playing Jazz albums like Getz/Gilberto. Havent tested any Miles or Coltrane on it yet.

Apparently B&O equipment works best with the receivers they sold in the 60s. I’m assuming this isn’t why people say so. Either way I’m definitely committed to retaining these speakers.

i just want to know if anyone has had a similar problem with any speakers in general, what the culprit could be - as well as what route to take in its repair.

My reciever seems to have a corroded volume/balance control as my left KLH speaker would become fuzzy. Bur i believe the problem i have is across both speakers and not just isolated to one.

If anyone cares the album being played is the *Akira Symphonic Suite* by *Geinoh Yamashirogumi*

Just in Case my equipment isnt causing this - i will list it here incase any of these components are infamous for interference

TT: Project Debut Carbon
EQ; Technics SH-8055
REC: Pioneer Sound Project 300
SPKR: B&O Type M/KLH-17
Click to expand...
This is an old thread, but in case anyone is monitoring it: A couple months ago I bought a new pair of Klipsch Forte IVs. All was well for several weeks - then I noticed the screech mentioned by the original poster. Yes, it only happens on certain recordings. I'm not completely certain it's narrowed to certain frequencies - the whole of the music/signal seems to have influence. Also, I might be crazy
galactech said:
So i picked up some vintage B&O speakers off of the Facebook marketplace from the 60s. Im in love with their colorful sound and the sonic clarity they give me. Ever since i got them ive been using them over my KLH-17's (mostly for harmonic testing but also because i love them), and ive noticed a minor problem with them during my listening sessions.

Sometimes when I listen to my records, at certain highs my tweeters sort of screech. It depends on the music, the vast majority of the time it doesn’t do that. Folk music or soft pop is not affected at all by this problem. Maybe once On a certain song for a few seconds and always at the same parts (as in - this hiss is consistent at the same sections of certain songs, and only during those sections). I still enjoy the speakers as well as listening to music on them, I’m just wondering if their is anything I should be worried about with these. I believe this hiss is coming from my tweeters.

Speakers are Beovox B&O Type M

[Here’s an audio sample. It doesn’t overpower the music per se but it’s noticible.](
)

as ive said before, when I play some music that has less high like Sufjan Stevens, Ambient music or other Electronic albums this problem is nonexistent. It occasionally happens when playing Jazz albums like Getz/Gilberto. Havent tested any Miles or Coltrane on it yet.

Apparently B&O equipment works best with the receivers they sold in the 60s. I’m assuming this isn’t why people say so. Either way I’m definitely committed to retaining these speakers.

i just want to know if anyone has had a similar problem with any speakers in general, what the culprit could be - as well as what route to take in its repair.

My reciever seems to have a corroded volume/balance control as my left KLH speaker would become fuzzy. Bur i believe the problem i have is across both speakers and not just isolated to one.

If anyone cares the album being played is the *Akira Symphonic Suite* by *Geinoh Yamashirogumi*

Just in Case my equipment isnt causing this - i will list it here incase any of these components are infamous for interference

TT: Project Debut Carbon
EQ; Technics SH-8055
REC: Pioneer Sound Project 300
SPKR: B&O Type M/KLH-17
Click to expand...
This is an old thread, but I was searching "tweeter speaker screech" and came upon this. I purchased a new pair of Klipsch Forte IVs a couple months ago. All was glorious for a couple weeks - then I noticed the same screech as described (and recorded - thanks). It happens on certain recordings - and on my system, independent of TT or cassette (I've yet to try open reel). Some days seem better than others - and I may be crazy, but the same recording(s) might do it one day - not the next. I listen from medium to quite loud volume(s). I've read about "speaker break-in" - some claim it's real, others say it's an urban legend. I've heard break-in periods are 100 to 500 hours. Who knows? Perhaps my speakers are passing through a break in period whereby the screech manifested after a few dozen hours as the speakers exercise their way into maturity, and will pass out of this phase - I hope that's it.
 
M 70 speakers were great with the added suck out speakers so there wouldn't have to be drastic polarity reversals between the different drivers. I still use the same Celestion tweeters as super tweeters in my large speaker, 4 per speaker. I tri amp them as super tweeters. I have never heard as screech or odd sound from them in over 50 years. I blew two diaphragms one time with a faulty D-150A Crown power amp. But since then no ssues. I am using 7 channel Mcintosh HT power amps for the past 16 years. They have three times the power, but super tweeters don't need much power in my application so I haven't had over powering issues. Maybe once in a while each tweeter may receive 10 to 15 watts for a total of 60 watts, but that like once a year. You might want to rebuilt your crossovers as capacitors do change causing the crossover frequencies to change and distortions to creep in sometimes. Resistors can have issues, too. If B&O is using air coils you should n't be having issues either. You know a midrange can sound like a tweeter distortion if pushed to hard some times. I would definitly have your amp checked yesterday if not sooner. Replacement parts for old speakers are almost unobtainable any more. Don't under power your speakers that will cause serious issues.
 
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