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Multi-Way Conventional loudspeakers with crossovers

MTM - TMM Shoot Out
MTM - TMM Shoot Out
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Old 27th November 2017, 10:49 AM   #1
ODougbo is offline ODougbo  United States
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Which is better.
This has been an ongoing project for a long time now, and finally at the point where I can AB boxes that are almost identical, except:
* Baffle
* xo desing (slightly different)
* Woofer inductor (14g vs.12g)

MTM:
Never heard anything I didn't like, very nice clean sound, very natural sounding. As most know best to keep them at ear level.

TMM:
Well this interesting, from the moment I hooked them up they had more defined bass. There is also a noticeable large hall/venue sound. The TMM xo is shown, the foil coil is 12g, maybe a characteristic of this type of inductor.
The vocals are amazing.
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Old 27th November 2017, 11:27 AM   #2
Bill poster is online now Bill poster  Thailand
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Polar response is better with MTM?
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Old 27th November 2017, 11:40 AM   #3
chris661 is offline chris661  United Kingdom
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Polar response will be different with the MTM - a little narrower in the vertical plane from say 500Hz up to the HF crossover point.

Chris
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Old 27th November 2017, 03:15 PM   #4
boswald is offline boswald  United States
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MTM - TMM Shoot Out
Are they both two ways, or is the tmm a 2.5?
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Old 27th November 2017, 03:24 PM   #5
TNT is offline TNT  Sweden
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Polar response is better with MTM?
No - always worse.

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Old 27th November 2017, 03:31 PM   #6
Boden is offline Boden  Netherlands
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I am afraid you are comparing apples with oranges: because of the different locations of the woofers/midwoofers in relation to floor and ceiling. Reflections (e.g. floor bounce) and interference patterns will be different.

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Old 27th November 2017, 03:44 PM   #7
plasnu is offline plasnu  United States
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I have tried MTM vs TM just unwiring top M of the MTM and send 2x power to remainning M, and I noticed the same thing as OP. Good thing about MTM is the vocal and instruments does not move vertically depends on the frequency, deadly still, but I believe audiophiles would prefer slightly vertically moving image because the movement makes the listener feel more vibe.
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Old 28th November 2017, 02:22 AM   #8
augerpro is offline augerpro  United States
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Originally Posted by plasnu View Post
I have tried MTM vs TM just unwiring top M of the MTM and send 2x power to remainning M,
With a passive crossover you've changed the impedance, and therefore the crossover filter by doing that. So not apples to apples.
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Old 28th November 2017, 10:28 AM   #9
ODougbo is offline ODougbo  United States
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Originally Posted by chris661 View Post
Polar response will be different with the MTM - a little narrower in the vertical plane from say 500Hz up to the HF crossover point.

Chris
Thank you for the interesting replies.

Polar Response, that sounds applicable here.

2.5? not on this build. But that reminds me how this all got started, which was a 2.5 in a much taller box. Abandoned that project. These are smaller and easier/move around, and didn't feel that I didn't give up much.

Location of the woofers, is approximately the same.

So the "foil coils" are a upgrade or a detriment? There are long threads on the topic and some folks were bashing them. The heaver 12g "wire" appears to enhance the bass, but I don't want to invest in another pair (for the mtms) if they have some drawbacks.

thanks again!
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Old 28th November 2017, 02:08 PM   #10
Bill poster is online now Bill poster  Thailand
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Considering the thickness of wire in parts of the chain, I don't worry too much about gauge of inductor
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