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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.Rerurn to Romy the Cat's Site