Bipolar option?
Hello Chris and Dave:
Rather than having both 12pw's on the front face could you narrow things up a bit, make the cabinet a little deeper and put one on the back. This would eliminate baffle step. Could the vent go out the back or bottom? Say with short legs and a nice stone base
Hello Chris and Dave:
Rather than having both 12pw's on the front face could you narrow things up a bit, make the cabinet a little deeper and put one on the back. This would eliminate baffle step. Could the vent go out the back or bottom? Say with short legs and a nice stone base
With 2 woofers, wide baffle and active XO, I'm not so sure that baffle step loss will be a major issue.
Yes, the vent could probably be oriented on any face, but boundary loading too close to the floor might have some consequences.
On a good day, I don't think about going bipolar, and with the sun shining right now, it's a good day.
'course living on the coast and attending several fests now, you're quite aware the weather and my disposition can be mercurial -
where was I?
Yes, the vent could probably be oriented on any face, but boundary loading too close to the floor might have some consequences.
On a good day, I don't think about going bipolar, and with the sun shining right now, it's a good day.
'course living on the coast and attending several fests now, you're quite aware the weather and my disposition can be mercurial -
where was I?
Rather than having both 12pw's on the front face could you narrow things up a bit, make the cabinet a little deeper and put one on the back. This would eliminate baffle step. Could the vent go out the back or bottom? Say with short legs and a nice stone base
Sure. Skinnier box likely means moving the XO up in freuquency. The drivers certainly won't fight that. A deep bipole will thou suffer from greater bipole dip.
These deal with baffle step in the same way a bipole would... put the XO at the BAS point and turn the woofers up.
dave
This particular design is a heartier sibling of one several years back with EL166 and a Fostex FF85K
Sold them to one of the pounders at work - they didn't disappoint, and have survived intact , including parties with teenage daughters and their boyfriends ( better than might be said about the daughters😱)
Sold them to one of the pounders at work - they didn't disappoint, and have survived intact , including parties with teenage daughters and their boyfriends ( better than might be said about the daughters😱)
Quick summary from this afternoon's listening session- sometimes more is better. First part of same session was with compact floorstanders with A10Ps and FF165WKs - either of which are eminently livable - but these puppies are something else.
Damping on the woofer TL section may need some tuning -seemed a bit over-damped with a thick batt of 2" Ultra touch on both sides of longitudinal brace - but even so the last system to rattle some of the loose soffit panels in the downstairs room was Tannoy Monitor Gold 12s I built a few months back. Personally I find these already more cohesive than the Tannoys, whose tonality and imaging I just never cottoned to
Damping on the woofer TL section may need some tuning -seemed a bit over-damped with a thick batt of 2" Ultra touch on both sides of longitudinal brace - but even so the last system to rattle some of the loose soffit panels in the downstairs room was Tannoy Monitor Gold 12s I built a few months back. Personally I find these already more cohesive than the Tannoys, whose tonality and imaging I just never cottoned to
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Apologies if that was one of my MLTL alignments Chris (I've lost track) -if so, I probably went a bit excessive on the specified damping.
Apologies if that was one of my MLTL alignments Chris (I've lost track) -if so, I probably went a bit excessive on the specified damping.
paternity accredited on the initial sketch from which I worked as DLD
Apologies if that was one of my MLTL alignments Chris (I've lost track) -if so, I probably went a bit excessive on the specified damping.
More likely that we installed more damping than specified.
dave
More likely that we installed more damping than vaguely specified.
dave
emphasis mine - with partial removable back, adjusting fill is easily done
carrying these mothers up a staircase - no so much
Ah, so it's one of Dave's? Saved! 😛
Of course, if it isn't, it means I was reading my copy of Vague at the time... not good. I'm getting careless in my decrepitude.
Of course, if it isn't, it means I was reading my copy of Vague at the time... not good. I'm getting careless in my decrepitude.

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😀
Private Eye and the International Journal of Maritime History are as exciting as I get these days...
Private Eye and the International Journal of Maritime History are as exciting as I get these days...
Hope I die before I get (that) old
t-t-t- talking about my - uh what was it actually?
you smell toast?
t-t-t- talking about my - uh what was it actually?
you smell toast?
I've been called worse.Bipolar
That's more like it.Cosmo kinda guy
Great looking project guys. Hope to hear them next trip over.
they gonna let you cross the border again? - I thought after the last time ....
oh, no, I'm thinking of TerryO
oh, no, I'm thinking of TerryO
they gonna let you cross the border again? - I thought after the last time ....
No customs between Canada and the (semi-)Independent Republic of Vancouver Island. You just have to pay the ferry tariff to get away and back.
dave
I was sincerely hoping we'd be hearing more about this project...🙂
@chrisb
Any further impressions?
@chrisb
Any further impressions?
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