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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: "speed" posted by Tom §. on February 12, 2000 at 05:43:21:
sorry couldn't resist that.
but seriously this is something i have also been wondering about in the
context of speakers, in particular woofers and subwoofer.incidentally i think your dealer meant transistors not resistors.
apart from frequency response (which is at low power) there is also
power bandwidth--which is the response at high power.low impedance helps in delivering current and coping with strange loads
but the impedance has to be uniform or very low at all frequencies used
or even beyond since the effect on phase response might be bad.there are amp makers who consider wide bandwidth into the megaHz
region very necessary for good sound such as spectral and goldmund and
both these are solid state. i am not aware of tube makers who
emphasise this although my experience in very limited--only used arc
and sound valve tubes to date. the jensen transformer guys also have
interesting paper on their web site stating the phase change over the
audio range must be less than ten degrees if i remember right and this
implies flat power response for several hundred Khz and down to few Hz.so back to the speakers---if the cones are heavy are they able to start
off at the same time as the mids and the tweeters, and is this why so
many makers use lots of little cones--apart from the fact of cone
breakup common in large cones? power/weight ratio comes into this of
course and if the panel drivers also get help from the air itself in
terms of damping the motion then so much the better.leelock
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Follow Ups
- Re: "All general statements are false."----including this one---- - leelock 07:33:54 02/12/00 (0)
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