I want to run a bass bins in parallel with my 2-way loudspeaker.
I'm a mid-bass head and sit far away.
The 2-way has an 18db crossover (3 pole, 1,200hz).
Can I run 6db rolloff (single inductor assuming flat z-curve) on the midbass modules (can be seen as baffle step woofers even) and it will be in phase with the woofer ?
I may have to flip the polarity…….
Love my 2-way, just want more punch impact like my double 15's had...…...
I'm a mid-bass head and sit far away.
The 2-way has an 18db crossover (3 pole, 1,200hz).
Can I run 6db rolloff (single inductor assuming flat z-curve) on the midbass modules (can be seen as baffle step woofers even) and it will be in phase with the woofer ?
I may have to flip the polarity…….
Love my 2-way, just want more punch impact like my double 15's had...…...
yes, that would create a 2.5 way system. The only caveat would be to ensure that impedance doesn't drop too low for your amp below your baffle step frequency
Normally with a 2.5 way the single inductor approach works (if the woofer needs an RC as well that goes without saying), and phase is OK.
If your question is whether you can use a different speaker as the 0.5 way, then yes you can. It's sensitivity will be important of course. It's directivity and location can have an effect on the result but you could still make it work.
If your question is whether you can use a different speaker as the 0.5 way, then yes you can. It's sensitivity will be important of course. It's directivity and location can have an effect on the result but you could still make it work.
Sa-weet
That is what I was thinking…………..
18db filter would be 270 degrees out of phase (electrically), so the 6db filter for baffle step woofer would be either +90 degrees or -270 degrees depending on the polarity.
yea !!!!!!!!!!!!!
serious midbass again !!!!!!!!!!!!!!!!!!
like stepping into a warm bath (returning to serious cone sd bass),
That is what I was thinking…………..
18db filter would be 270 degrees out of phase (electrically), so the 6db filter for baffle step woofer would be either +90 degrees or -270 degrees depending on the polarity.
yea !!!!!!!!!!!!!
serious midbass again !!!!!!!!!!!!!!!!!!
like stepping into a warm bath (returning to serious cone sd bass),
For best results you should use the same model and box tuning for the BSC woofer(s) as otherwise they can go in and out of phase with the existing woofer (especially near Fs or box tuning frequency) and cause a rollercoaster bass frequency response.
Also keep in mind that adding a BSC woofer causes the polar response to be tilted in the direction of the BSC woofer, as it is lagging in phase around the BSC frequency.
An example here, where at 500Hz the lobe is aimed towards the ground since the BSC woofer is positioned below the normal woofer.
Zaph|Audio - ZDT3.5
http://www.zaphaudio.com/ZDT3.5-polar-500hz.gif
The effect is going to be far more pronounced if you have separate bass cabinets and therefore greater centre-to-centre distance.
Also keep in mind that adding a BSC woofer causes the polar response to be tilted in the direction of the BSC woofer, as it is lagging in phase around the BSC frequency.
An example here, where at 500Hz the lobe is aimed towards the ground since the BSC woofer is positioned below the normal woofer.
Zaph|Audio - ZDT3.5
http://www.zaphaudio.com/ZDT3.5-polar-500hz.gif
The effect is going to be far more pronounced if you have separate bass cabinets and therefore greater centre-to-centre distance.
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true, thanks.
I'm listening 15' away maybe 20 nowadays.
And yup, going to tune to the same frequency.
I'd eq a big hump from down 200hz normally anyway, even if the speakers measured flat.
wouldn't 6db filter out of phase be the same as the 270 degrees out (or in) for timing / phase purposes ?
I'm listening 15' away maybe 20 nowadays.
And yup, going to tune to the same frequency.
I'd eq a big hump from down 200hz normally anyway, even if the speakers measured flat.
wouldn't 6db filter out of phase be the same as the 270 degrees out (or in) for timing / phase purposes ?
No, if you flip the polarity you'll lose the bass at the same time, but if you just use an 18dB filter it may (IIRC, but could confirm in Xsim if interested) produce some ripple.
So how far off Electrical phase is the 18db crosses woofer with a 6db crossed woofer running beside it, a parallel ckt.
In zaphs I see the baffle step woof is only 90 degrees out.
Do you see where I am jumbled up ?
I see the 6db Inductor as -90, flip the polarity and it is +90.
The 18db (woof ckt for 2 way) is -270.
Man, now I am messing myself up now.
Anyone keep it simple stupid for me ?
In zaphs I see the baffle step woof is only 90 degrees out.
Do you see where I am jumbled up ?
I see the 6db Inductor as -90, flip the polarity and it is +90.
The 18db (woof ckt for 2 way) is -270.
Man, now I am messing myself up now.
Anyone keep it simple stupid for me ?
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Just so we are on the same page.
I have a 2-way speaker and a want to run another woofer box in parallel with it.
I'm wondering if i can use the extra woofer in its seperate box, with a 6db filter, say 200hz pole to add bass without fighting phases.
This extra woofer box is run in parallel with the 2-way loudspeaker (electrically crossed 18db at 1.2khz).
I have a 2-way speaker and a want to run another woofer box in parallel with it.
I'm wondering if i can use the extra woofer in its seperate box, with a 6db filter, say 200hz pole to add bass without fighting phases.
This extra woofer box is run in parallel with the 2-way loudspeaker (electrically crossed 18db at 1.2khz).
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Ok, so this separate woofer has a filter of 18dB at 1.2k, and you want to add another filter of 6dB at 200Hz to this same woofer?
You'd expect one to cut out the other, wouldn't you?
You'd expect one to cut out the other, wouldn't you?
Nope.
I'm basically running an extra box i(with a woofer in it) in parallel with the 2 way loudspeaker.
The 2nd box with a woofer in it, that box has a single inductor on the woofer.
Run the 2 way loudspeaker (with its own internal 18db crossover) box in parallel with the other single woofer box (the single inductor).
I'm basically running an extra box i(with a woofer in it) in parallel with the 2 way loudspeaker.
The 2nd box with a woofer in it, that box has a single inductor on the woofer.
Run the 2 way loudspeaker (with its own internal 18db crossover) box in parallel with the other single woofer box (the single inductor).
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It might be good to begin with the second woofer close by. If it cuts out at 200Hz, that means 40cm. Then I would just try it.
The 18dB crossover in the other speaker doesn't make any difference to this.
Let us know how it sounds.
Let us know how it sounds.
Technically you need both filters on the BSC woofer(s) - the 6dB/oct BSC filter and the 18dB/oct crossover so it phase tracks the existing woofer.
If the BSC frequency is sufficiently lower than the 18dB/oct crossover, then you might get away with just having the 6dB/oct filter on the BSC woofer(s) with no ill effects.
If the BSC frequency is sufficiently lower than the 18dB/oct crossover, then you might get away with just having the 6dB/oct filter on the BSC woofer(s) with no ill effects.
Is it possible to just add an inductor after the 2-ways lowpass-filter, and connect the midbass to this inductor? Phase should be better, and you would need a smaller inductor.