thanks! i guess you're right about reverse engineering. an oscilloscope and winder might be too much of an investment for a DIY newbie.
i plan to build a 2-way speaker with an 8'' bass driver with a dome tweeter.
Sir, am just saying that an oscilloscope is ideal specially in dealing with frequencies, voltage and wave outputs but is heavy on the pocket; an alternative would be a digital multimeter with frequency measurement. A
winder will be important in making your own filter/crossover, speaker, transformers, etc. and i think it's not
much expensive. Since occassional lang naman siguro ang paggawa mo ng projects, you can always let the
guys at Raon wind things up for you according to your specs or order it made by our diy masters.
Regarding your project plan, I think using an 8" driver for the mid-bass is not recommended coz there will be a
gap in the mid frequency range, which for me is very critical. In a 2-way system it is not recommended to
have a woofer larger than 7", anything larger will not faithfully reproduce the midrange frequencies with
realism, clarity and detail since a large driver (8" or greater) is designed primarily to produce bass frequencies
below 200Hz (frequency range is 20-500 Hz) and is too slow to resonate frequencies with authority in the
midrange band of 200Hz-4kHz (can you see the gap already?). I just don't know if it's okay with you the gap
I'm saying but of course you can continue with your project plan.
Just FYI:
Baffle step compensation is an increase in output from a loudspeaker as the size of the baffle becomes
significant in terms of the wavelength of sound for a range of frequencies. At low frequencies, where the
baffle (the panel the loudspeaker is mounted on) is small compared to the wavelength, the speaker is assumed
to be operating with a spherical radiation pattern. As frequency increases, the size of the baffle becomes
significant, and the spherical radiation pattern no longer applies. This is also partly to do with the loudspeaker
drivers themselves - as frequency increases, typical cone drivers become more and more directional - this
occurs as the dimensions of the cone become significant with respect to wavelength.
There's a lot of work involved in baffle step compsensation and equalisation, and unless you're very interested
and it's much of a concern, I suggest you leave it for the moment. The person replying to your query is
assuming that you understand a lot on loudspeakers and electronic stuff. Parang nagtanong ka lang kung
paano mag-mix ng dough pero gustong pag-aralan mo na yung buong baking process.
Tama si sir john, mas madali kung may schematics nung crossover. Parang ganito:
6dB/Octave 2-Way Passive Crossover