hi all, took me quite a while for a update, hm?
it's because i felt more into pc's instead of audio lately.
i have been considering ditching this whole project quite a bit, and nearly made the step to buy pre fab speakers. the thing that was holding me bakc was the project on here :)
and i'm glad i continued the project.
i just resumed working on the crossover, basically i got a very smooth response curve (even including my room's resonance frequencies!)
the speaker is basically the same as in the last update, so it's not worth showing.
the frequency response:
as you can see, i got it smooth from the lower mids and up, only need to work on the woofer's crossover (maybe increasing the frequency of it's low pass filter and notch the 100hz out a bit?)
also, low extention is rather nice in this speaker, thanks to the t-line design.
max output is rather low, especially for it's size: 103DBC at 200 Watts RMS (music, not a constant tone)
which means it is about 80DBC at 1 watt at 1 meter when playing music
now, i know these values don't mean much for musicality (how 'good' they sound)
but i can assure you this: they sound very nice and transparant, although the very lows (20-40hz) sound a bit compressed somehow.
i honestly suspect my amplifier (behringer a500) to not have enough juice to push it on the very low frequencies, so in the future i might go search for a more powerful amp, or go for bi-amping.
right now i was playing a single speaker (mono) and it sounded like there were multiple speakers alongside with it, as it had a very wide soundstage, which surprised me.
i sat 3.2 meter away from the speaker, with my ears the same height as the tweeters, and when i turned one of my ears towards the tweeter, i barely could locate it, which means it has a very good sound dispertion. (although some might not like this)
the sound is tight and responsive too in my opionion.
i also measured the frequency response with my multimeter (not the most ideal way, but it does the job), the result? about 4.5 ohms
the specs right now:
200w rms (can go up to 220w rms, just need to increase voltage ratings on some caps)
frequency response: 25-23000hz
target rooms: mid sized living rooms which barely have place for a subwoofer, and don't need too loud sound,
main intended use: watching movies
once i get the crossover completely right:
first swap the crossover parts for better quality ones.
design custom pcb's and order the pcb's at OSHPARK (most probably 0.8mm, 2oz, 2 layer)
once i receive those, assemble one and test
if all succeeded:
assemble the final speakers and make them look nice.
oh well, that's it for this update, check you guys layer :)