GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.

Post Subject: Again, too much work…Posted by Romy the Cat on: 9/8/2010

Enduring a quite aggressive schedule to the end of the month to finish the horns, I realize how much work is still ahead. As now both of the horns are built. They are no prepared to be painted yet and second skin is not built. This notion that ¾ layer of Baltic Birch will not be enough made the whole project a nightmare. When the horn will be doe it will have ether 1 ½ itch of plywood of ¾ +2x4… and each single point of surface with exception of the top of the horn where it will be covered with sand. I have order 30 custom made bags for sand and the will be arriving this week. That building a second skin made it so labor intense and time consummating that it become ridicules. The second skin needs to be precise cut to be glued atop of the initial skin. At this point I feel that if we go for making the horn from beginning using two layers of glued ¾ sheets then it will be easier for us as it will not require gluing the sheet in place. From another perspective, now we have the 2x4 frame INSIDE the ¾ shits, the frame is above the first layer but between the second one. I presume that it is if not stronger then at least more solid. My carpenter has a big theory about the difference between solidity and strength. I do not buy any of it as I do not think that we deal with solidity or strength but rather I feel that we deal with damping resonances that are not necessary directly related to solidity or to strength.

Talking about the resonances. I have no idea how to deal with it. Yes, I monitor what need to be monitored and have/developed tools, skills and knowledge to deal with it but I have no way to predict how the existing or none-existing resonances will impact the harmonics of the future sound. I have a very clear idea what harmonics I would like to get but I have no idea how resonance at this or that surface would impact it. So, it is like bringing up a child – you do what you hypothetically feel to be the beast and parry that it would turn out all right. Meanwhile, I spend in basement in dirty clothes most of my time nowadays and I do pray that this episode of my life will be over.

The Cat

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