…..or maybe?……the MT section isn’t firm yet but the dipole bass has been designed and 8 woofers are on the way. I’ll be using these
https://www.parts-express.com/GRS-12PR-4-12-Paper-Cone-Rubber-Surround-Subwoofer-4-Ohm-292-820
Two 72” tall towers with 4 drivers in each in an H frame alignment unless someone offers up an improvement using a U frame.….I’m not sure there’s a viable argument either way though since these won’t be asked to do much above 100hz. I can’t find a viable argument for or against drivers mounted opposing either…..from a visual perspective, I’d rather not look at magnets unless someone can make a case?
I’m 55 now and the plan is this will be my silver system…….it needs to take me to where and when my hearing loss no longer justifies high end performance is you know what I mean. The space they’ll be in is where they’ll stay permanently……I doubt I’ll be able to take them with me to the old age home when the time comes! Lol. We’ve got 36” behind and to the side walls available and 10ft between them so enough room for them to breathe in a dipole situation.
Power will be handled by two class D amps mono with DSP. The woofers have enough linear excursion to get the job done and the combine efficiency should suffice. Total Q isn’t bad at .43 and if I understand it, the dipole alignment will increase total Q as well.
Once built before final finish work, I’ll tweak these along with my current diy MTMs which are sealed boxes before moving on to the hybrid array MT section……for now more of a proof of concept that dipole bass is the ultimate for music. For HT use, the 18” servo sub that lives as a DIY end table will remain for the lowest octave.….I get an F3 of around 20 with it now and an F10 of around 15 with room gain.
Once woofers arrive and have been tested for consistency, I’ll post an update and rough drawings of the enclosures. Plinths will be 3” thick layered MDF since I already have so many scraps of the stuff. Cabinet will likely be BB with Walnut veneer and rubber piping grills sans Sonus Faber design….love that look!
Ive also given some consideration to an Aluminum extrusion truss design with wood accents where the extruded truss would offer the structural component with the wood used for the baffle. If anyone has a thought, I’d love to hear your ideas. End of the day if you consider he cost of BB plywood, premium veneer, materials and time……I think we’re still in apples to apples territory.
Thanks for reading…..this is gonna be a long journey for us to take together.
https://www.parts-express.com/GRS-12PR-4-12-Paper-Cone-Rubber-Surround-Subwoofer-4-Ohm-292-820
Two 72” tall towers with 4 drivers in each in an H frame alignment unless someone offers up an improvement using a U frame.….I’m not sure there’s a viable argument either way though since these won’t be asked to do much above 100hz. I can’t find a viable argument for or against drivers mounted opposing either…..from a visual perspective, I’d rather not look at magnets unless someone can make a case?
I’m 55 now and the plan is this will be my silver system…….it needs to take me to where and when my hearing loss no longer justifies high end performance is you know what I mean. The space they’ll be in is where they’ll stay permanently……I doubt I’ll be able to take them with me to the old age home when the time comes! Lol. We’ve got 36” behind and to the side walls available and 10ft between them so enough room for them to breathe in a dipole situation.
Power will be handled by two class D amps mono with DSP. The woofers have enough linear excursion to get the job done and the combine efficiency should suffice. Total Q isn’t bad at .43 and if I understand it, the dipole alignment will increase total Q as well.
Once built before final finish work, I’ll tweak these along with my current diy MTMs which are sealed boxes before moving on to the hybrid array MT section……for now more of a proof of concept that dipole bass is the ultimate for music. For HT use, the 18” servo sub that lives as a DIY end table will remain for the lowest octave.….I get an F3 of around 20 with it now and an F10 of around 15 with room gain.
Once woofers arrive and have been tested for consistency, I’ll post an update and rough drawings of the enclosures. Plinths will be 3” thick layered MDF since I already have so many scraps of the stuff. Cabinet will likely be BB with Walnut veneer and rubber piping grills sans Sonus Faber design….love that look!
Ive also given some consideration to an Aluminum extrusion truss design with wood accents where the extruded truss would offer the structural component with the wood used for the baffle. If anyone has a thought, I’d love to hear your ideas. End of the day if you consider he cost of BB plywood, premium veneer, materials and time……I think we’re still in apples to apples territory.
Thanks for reading…..this is gonna be a long journey for us to take together.
