Desktop OB computer speakers

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#61
Sorry for my absence again folks :-( The Easter week + mid-sem break week has placed all my assignments in a tightly packed phalanx with my sleeping hours being the chief casualty :-(

I feel your pain Rudolf!! The internet in Australia goes by data-quota. My roomies managed to run us over and I was out of internet for over 2 weeks. Living in the library is not a fun thing :-(

Yes, I mean an arrangement like shown in your picture. If you need linearity only in one direction, you could linearize to that side. Change the mikrophone position in EDGE to the proper angle and move the drivers to the best position. That is probably to the inside edge of the baffle, but you could try the outside edge too. That way the speaker response to your listening position will behave like that of a narrow baffle (which you want), but perhaps without the steep EQ a real narrow baffle will request.
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I understand and after some thought I've decided to still pursue the double cone diameter design. I'm still studying and do not have a fixed long-term abode; a little flexibility would go a long way for me 🙂


1.5-2 kHz looks life the critical point in any "narrow baffle dipole" concept. My midrange driver needs a certain baffle width to support 500 Hz at the low end. Almost every tweeter that will feel comfortable above 10 kHz will start from at least 2 kHz. So I have to compromise and let the midrange work into its beaming area a bit.
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Is there a way to work out how much baffle width is required for the low end?

Gainphile:

I really do apologize for my tardiness.

As I'd already informed you, the B2S is not much of a tweeter. I didn't do a proper measurement, but hooking it up thru a 1st order XO at around 2.9KHz (6.8uf) gave a rather disappointing performance on the treble. In my completely subjective opinion, the treble sounded harsh, brittle and constrained with no 'shimmer' at all (I love hi-fi lingo ;-D)


I've mounted the drivers up on a Styrofoam baffle. They are playing thru rudimentary passive XOs. I must say B2S's midrange is sweeter than what it has any right to be. For the price I paid, i aint complaining....yet! 🙂

Be back soon as I get rid of them pesky assignments...

Cheers
 
#63
Yes, primitive in the extreme.
24k/sec up 8k/sec down and a data cap of 12gig costs us $55 a month

We are waiting on the new fibre to the node anxiously

But it's gunna cost; you have to remember that this country is one huge ****** desert with only 30million people and only 18 million taxpayers to foot the bill, and at the moment no-one is buying iron or or bauxite
 
#65
you can still move!! who needs internet when Australia has so many natural wonders to visit?

Oooppsss!!! I'm a tourism major, occupational hazards!!! 🙄

Coming back to the point, can anyone recommend what I can use to simulate baffle width to get desired frequency response in OB application?

I must admit tho, I've never done any simulations and am totally lost 🙁
 
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