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In the Forum: Horn-Loaded Speakers
In the Thread: Deep End DIY - Australian take one Macondo.
Post Subject: Some thoughtsPosted by Romy the Cat on: 4/5/2017
Here I share some thoughts about what you have shown. I will share only critical and warning thoughts not because I have nothing but critiques. All nessesary compliments for your planning come as a default and I do not think you posted it here to hear salutations but you rather prefer to hear warning from the people who have done it. Jessie, if you are around there then you would be a good person to comment about your experience regarding this project as you have done something similar. Anyhow here are some of my comments in no particular order. 
 
1)      I do not know why, and I never thought about it unit I have done my project but I am very sensitive to visual aspect of what is located juts behind the Macondo frame. As I look at the Macondo horns fixture with the tweeter projects to the main frame it look sand feels very elegant and symmetrical. For some reasons I do not like to see behind the frame anything that screw up the elegance and symmetry. This is why I do not like to put Milqs amplifiers behind the Macondo frame. I did try is multiple times and it did not feel good to me. I personally much prefer when the amps not behind the frame but slightly on the side of the frame. It just makes to me the whole playback configuration more balanced. Do not forget that with Macondo configuration you will have the speaker’s stage at ~14-16 feet minimal. With upper-bass horns of 36” you will have a LOT of empty space between the speakers… Saying it I need to admit that it is just me and your mileage might wary, it is not to mention that your amps is located very low and you might not even see it,  
 
2)      I do not buy the idea of tube woofers, I never did it with the guy from Mexico and I still do not like it. First of all the harnesses that you depicted will not work. This will be very heavy and you will need some kind of heavy duty vertical poll to hold the whole stack together. The ability to slide the individual woofers is a great thing but why not to do it in rectangular boxes? If you are planning to use the woofers that I used then you would need at least 1” foam in there – you will not have space in those small 10” tubes. If I did it and to have the objective to time-slide the woofers I would make 4 rectangular sections with 2 drivers each and would make the front baffle let say 5 degree angle. They I would be able to fulfill any configuration by sliding and rotating an individual section. Well, I do think that to have 4 dual driver section with straight baffles will be fine as well…
   
3)      A missing channel. If you have your playback in a small room and you will be lucky to have your upper bass horns at very active spot of your room then you will be fine with the configuration you shown. I had it what I live in Boston and my upper bass horns work very comfortable at 95 Hz and they were in active room zones. If your room is larger and if the upper bass horns are not at hot spot then you will have 130Hz of it this upper bass horns. If you use my woofer then your cross them over 100Hz will be a bit problematic. My woofers are very interesting. If you use it at 100Hz then they are more at crap side. You need to cross them much lower. Then you begin to multiply them. As you pile 4, 5 or 8 of them you have a substantially more interesting results. 8 of them you will be able to use even at 100Hz but only in small room and only with very lightly loaded amplification. The woofers have own signature but very pleasurable and much dominated by second harmonics. I tend to love. I can hear instantly that my woofers are in playback and I agree that they are “coloration” but this “coloration” agrees with me. So, you might consider to have a dedicated midbass channels but to do it you your to take your room and your spear placement into configuration. You do not know it yet and then you do not k now the crossovers, gain and the OPT from app you might need. So do not rush as at this point not everything might be predicated. What I would adviser is to buy 2 of my woofer and play car audio game with them, trust me, it is very educational.

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