I made this dipole speaker with a 5" driver and a 1" tweeter I had off hand [pic].
After further listening I noticed that on some female singers, the long "ssssshssshssh's" in some words sounds a bit harsh and I thought that maybe because of some crossover problems the freq response had some strange spikes.
I measured its frequency response and everything is as predicted.
Even baffle difraction is as predicted.
Evrything is +\- 3 db flat.
Any idea what might cause that? It gets very anyoing sometimes...
After further listening I noticed that on some female singers, the long "ssssshssshssh's" in some words sounds a bit harsh and I thought that maybe because of some crossover problems the freq response had some strange spikes.
I measured its frequency response and everything is as predicted.
Even baffle difraction is as predicted.
Evrything is +\- 3 db flat.
Any idea what might cause that? It gets very anyoing sometimes...
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no, a simple first order at 6khz, and I'd guess the tweeter can take that at normal listening volumes without encountering problems.
Many tweeters are made to be crossed at 2khz with a second order and at 4khz with a first order.
:|
But yhea.. I tryed using a second order at 4khz and it did not help.
Many tweeters are made to be crossed at 2khz with a second order and at 4khz with a first order.
:|
But yhea.. I tryed using a second order at 4khz and it did not help.
The overloading tweeter...
I suspect that...try a 12 dB octave...your tweeter is overloading ...
Or the problem maybe in your amp...try another...
I suspect that...try a 12 dB octave...your tweeter is overloading ...
Or the problem maybe in your amp...try another...
I run it using my main amp, it played many speakers and I never noticed anything like that.
But I just tested it using a gainclone of mine, same problem.
The problem sounds alot like room resonance, but frequency responce plots do not show any when I test the speaker.
The strange part is that nothing else does that, only female vocals.
😡
But I just tested it using a gainclone of mine, same problem.
The problem sounds alot like room resonance, but frequency responce plots do not show any when I test the speaker.
The strange part is that nothing else does that, only female vocals.
😡
Hehe, I would have given driver brands if I knew them 🙂 some unnamed drivers I had off hand, I only had the thiel-small specs that I measured.
the filter is a 3.3 uF cap 😉
Anyway, I just found the problem, The cap seems to be faulty (or just really bad quality), I changed and everything is perfect now, its a electrocube film cap now, used to be some film unnamed cap I use for tests.
I'll make some more listening tests. 🙂
Thanks for all the replies.
the filter is a 3.3 uF cap 😉
Anyway, I just found the problem, The cap seems to be faulty (or just really bad quality), I changed and everything is perfect now, its a electrocube film cap now, used to be some film unnamed cap I use for tests.
I'll make some more listening tests. 🙂
Thanks for all the replies.
This might sound silly , but I've heard this phenonemon many times and usually improved by alerting crossover etc.
But
the most striking example was when i was listening up close to a live unamplfied choir.....(I rarely hear a true live performance)
and there it was just this "problem" as descibed and often heard at home via speakers...
could it be that what we occasionally hear is in fact accuracy rather than a fault , and that we simply just don't light this particular trait of the human voice..?
any comments..?
But
the most striking example was when i was listening up close to a live unamplfied choir.....(I rarely hear a true live performance)
and there it was just this "problem" as descibed and often heard at home via speakers...
could it be that what we occasionally hear is in fact accuracy rather than a fault , and that we simply just don't light this particular trait of the human voice..?
any comments..?
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