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In the Forum: Audio Discussions
In the Thread: A big room with good acoustics before treatment, and some other audio tips.
Post Subject: I see.Posted by xandcg on: 2/21/2017
Xandcg, I did not see this thread below. I would not comment on 5x10x14 vs. 4x8x12 rooms, the answer is obvious, What I will comment that the scenario you propose is very close to ultimate configuration for Macondo-like acoustic system. A few this you need to consider, presuming that you mapping is in accurate proportion. Your listening position is too far for the space between the R and L channels. So, you might want to consider to switch the amps and >120Hx horns and have the MF channels to be wider. Also, do consider to add ULF channel, a sealed box operating at transitional slope.


I would not call the proportions accurate, I did¹ them using the rocketsciencecanada.com but I added-in some "fat" to have some error margin related to the total used space.

I understand what you say about the >120 Hz modules.  I did that one using about 2.1 m between them. I did not have a real reason to use this exactly number, I used it just as some start point. I will reconfigure it later with about 2.5 m but I feel I would need to add more toe-in.

The tapped horns decision was not written on a rock. This is a temporarily choice while I still think I can find a way to driver them with SET, I indeed would prefer sealed ones.

If at some moment I find out it would not be realistic to drive the tapped horns with SET, or it eventually would need about the same power to drive sealed ones, I will make the switch.

PS. I live close to the Audiopax HQ, I never had in there and I do not know them, but eventually a ULF only Audiopax M100 (100W, but a some more using KT120) could be a reasonable sounding alternative, if it really have a close SET sound.

PS.2 . I found your post about the ultimate configuration. When I was thinking on how still have full straight 50 Hz horns in a reasonable smaller space than the first plan, and I had the current idea, I was certain I saw something like that before. Now I know where it was. :-D

¹except the tapped horns size what apparently can be almost anything, and so I just "invented" those dimensions.

Thank you!

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