Franck M. [email protected] wrote: > how < > to fix the speakers to (vertical or horizontal) tube stands or >structures
It's hard to see how to do this without doing some fabrication. For a similar 12-speaker system put together two years ago, Andrew Kimpel and I used large folding speaker stands of the type frequently used by touring musicians. These typically can be raised to a height of 2 meters or so and have a round finished tube that is meant to be inserted in a socket on the loudspeaker. I fabricated four inclined mounts from MDF that held the loudspeakers pointing downwards at an angle of 30 degrees, with a lip to ensure that the loudspeakers couldn't slide forward and fall off the stands. The inclined mount is necessary because most speakers have substantial frequency response errors for positions away from the horizontal plane. The middle ring of loudspeakers was mounted on conventional speaker stands which were located at positions between the stands that held the upper loudspeakers. The lower loudspeakers were placed on the floor with wedge-shaped inclined mounts to point them 30 degrees upwards. For a previous such installation we used a mounting system that involved four floor-to-ceiling columns fabricated from 3" ABS pipe. The top and bottom of the pipe had small flat placards which rested on the floor and against the ceiling. Obviously the columns had to be trimmed to match the exact height of the room. The speakers were attached to the column using Omnimount type speaker mounts similar to these: http://www.omnimount.com/Products/Speaker_Mounts/Stainless_Steel_Series/ and the columns helped to route the cables to the loudspeakers. It's difficult to get around the fact that there is a lot of infrastructure with such systems. We chose to use powered loudspeakers but it might have been easier if they had not been powered. Eric Benjamin ----- Original Message ---- From: Franck M. <[email protected]> To: [email protected] Sent: Thu, June 30, 2011 6:36:28 AM Subject: [Sursound] Portable ambisonics setup, or "how do you mount speakers on tubes?" I'm designing a mid-size (8 to 12-ch) ambisonics setup, using small active near-field studio monitors such as Fostex PM04, Focal CMS40, BM-5A...(the exact model will depend on the funding I'll get for this project). As it is supposed to be "portable" (well, transportable would be a better term) I'm planning to put the speakers on stands (such as lightning roll-stands from Manfrotto) that can be easily folded and put in some car (mine). For example, the 12 speakers setup would have 3 speakers per stand (floor, mid, ceiling speakers), each stand being in the corner of the room or, better, at the middle of each room side, in order to prevent that common room-corner-ultra-bass-boom effect. The 8 channels setup is simply the cube (or the "parallelepiped"), with no mid speaker. As some of you already may have built such fixed or portable setups, I was wondering how you managed to fix the speakers to (vertical or horizontal) tube stands or structures. For lights, they use tube clamps, but the weight is not the same when it comes to active loudspeakers. Most small form factor speakers have threaded mounting holes so you can put them on microphone stands, so I was planning to use them, but I couldn't find the "missing link" between the tube and the mounting holes... Thanks in advance for any tips! Frank _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
