Hoffman's iron law. You can have a small box with deep bass and high efficiency.... if you throw away one of those three criteria.
The tough thing is audio is all in log scales. So that 90dB sub takes 5ft^3 where 87 would be half as big as so forth. It's always this balance that is challenging. Given how many small subs sound burpy and weak-kneed, I'll be sticking with big boxes for the forseeable future
The tough thing is audio is all in log scales. So that 90dB sub takes 5ft^3 where 87 would be half as big as so forth. It's always this balance that is challenging. Given how many small subs sound burpy and weak-kneed, I'll be sticking with big boxes for the forseeable future
I think John Watkinson (he of "Art of Digital Audio" etc) reckons there are differences in magnetic materials even when they have been chosen to give the same flux in the gap. I seem to remember his comments were to do with the induced flux from the voice coil and its interaction with the hysteresis curve of the magnet.
78dB.
Afraid so, can't break the laws of physics. Quality won't be great either; transient response is usually poor due to the lengthy voice-coil & therefore typically high VC inductance (Le).
So do you mean that the sound quality on my speakers aren't good at all? Meaning there are not high end speakers? I' am sorta confused.78dB.
Afraid so, can't break the laws of physics. Quality won't be great either; transient response is usually poor due to the lengthy voice-coil & therefore typically high VC inductance (Le).
Ofcourse, because its mostly a talk about belief and "religion"
In short, narrow minded
Dont forget that when one person say what he think is best, its because it serves his purpos best
And another may say the opposite, because he has other demands
Its mostly about realising your needs, and learn what it takes to get there
If you want the best, its just to find whats best fore your specific needs
And leave the rest be
You cant have it all
Lots of very good stuff out there when used right
And lots of good stuff that doesnt work when used in a wrong way
No, I don't think that's what anyone is saying. We're just trying to describe our experiences with different magnets. Personally, I think Tinitus is right, if you were to write a list of all the things that can ruin a good sound system, driver magnet material would be way down.
I think a grammaphone is higher SPL
Is a "grammaphone" something that shouts, "Your English is appalling, you've constructed that sentence really badly!"
Is a "grammaphone" something that shouts, "Your English is appalling, you've constructed that sentence really badly!"
Ya nucking futz!
The material properties of NdFeB make it capable of building the best permanent magnet speakers. New motor designs are starting to use NdFeB to its full potential.
This post contains a comparison of magnet materials.
http://www.diyaudio.com/forums/multi-way/134465-what-draw-older-alnico-drivers.html#post1678640
This post contains a comparison of magnet materials.
http://www.diyaudio.com/forums/multi-way/134465-what-draw-older-alnico-drivers.html#post1678640
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