THAM15 - a compact 15" tapped horn

Does the B&C 15NA100 also work with the Tham15 design
I have tried this speaker in a small vented box and was not very satisfied.
Amplification will be a class d module with 900W peak , highpass is fixed 25Hz 12db
My post was from February 2014


At least 6 Years later I built the Tham15 with the B&C 15NA100.
Foam and neodym magnets for holding the grill are still missing.
Amp for testing was Apart Champ 3D with DSP and only 400W for the Sub, can easily keep up with two 10" tops. First impression was very good. Hope to find time to test it in the next days with more power.


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I will try THAM 12" with some 1.000 or 1.200 W neodym speaker. I will build one, to see if is a miracle or not :). If is just a regular box I will made a home cinema with that THAM 12. If is powerful and the bass is low enough, then another 3 THAM12" will join the system. I have DSP. I will make some measurement. I own 2 subs with 18" BR 100 liters 4 ports in corners and I order some new boxes for 18" with a single port to avoid "air blow effect what ever" :) and 160 liters, tuned at 43Hz. I have PAudio C18 600 LF mk1 - 600W and Amp is a 2x1400W in 4R from Ecler. I order a class TD 2x2.500W diy amp with a 6 kW power source.

so, Ecler ALMA26 DSP is ok, Ecler ELPA 2-1400 amp for topers is ok (4x 12" EV SX300 made in USA), power amp class TD @6 kW will arrive soon, THAM 12 is in progress, new 160 liters box for 18" is also in progress.

I want to buy some 2x31 band EQ for live events, because is fast to cut feedback.

After the sysyem is ready I will be back with some pictures. I will compare THAM 12" with BR 18" because nobody did that... I ask a lot of people, I'am search for about 3 months and nobody on Earth compare THAM 12/15/18 with a BR... so I am a little skeptical.

Any hint for me is ok. For THAM I need to test or to see real world comparisons and I want too see that the bass from 38 to 48 Hz is a must. Who can reply to this questions? The bass from 38-48 Hz is reproduced by THAM 12" ? Is any differences in real world between THAM 12 and THAM 15 or THAM 18???? Is the THAM like a regular BR enclosure with the same speaker?

anybody build a bigger THAM 12" for better low extensions? (I read about a THAM 12" with 55mm taller that get a little low bass but the user is not answering)

or If I use 4x THAM 12 grouped together in the front of the DJ they will "win" low extensions?????


CAN I REPLACE BIG enclosure 18" BR with multiple THAM 12?????

I want to build a scalable system, like LEGO bricks, when I need 8, I will use 8 smalls, but if I have a single HUGE box is hard to ship it....

a million dollars can be "build" with a single bill (banknote) OR with 1.000.000 pieces of $1 bills. I like multiple pieces, because I can buy a coffee in any place but If a put a $1M bill on the table.... all swats and fbi's will be there in the next second.... :)

A lot of unknowns about that THAM small bricks....
 
so, if I will build THAM by Martinsson I won't regret???


Like what a lot of people have been saying, it depends what your looking for! This is what i've noticed:

- THAM 15 is really easy to drive due to the efficiency.
- In terms of SPL, 1 tham 15 will match 1 double reflex sub (or two single reflex)

- The bassseems to fill out a room really well and works very well outside.
- It has a nice natural roll off
- -10db ~40hz mark
- We've had DJ's play all sorts of music on them, Disco to from fast heavy techno to slow melodic dub. All we've had is compliments on the sound.

Essentiually you wont find a more compact, easy to run speaker system than this. Sure if you want high spl under 40hz your looking at a Dual Bass reflex cab & Expensive amps OR a larger 18" horn loaded sub like Xoc1's TH-18.


I've attached a wee snap of our current setup from last night
 

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If I use 4x THAM 12 grouped together in the front of the DJ they will "win" low extensions?????


CAN I REPLACE BIG enclosure 18" BR with multiple THAM 12?????


Short answer... No.



THAM's will never win when looking at frequency extension. Even the 18" version is designed to roll off at around 40-50hz.



THAM's are all about being efficient and compact. In the sound world you have efficient, size and extension.... pick two...


The THAM12 will roll off at around 50-60hz where im sure your BR will still be hitting hard down to 40hz.


In terms of SPL though and the THAM's will stamp all over the BR. When you couple these things together they absolutely pound.
 
Thank you all!

Now the question become like ... Do I need 38 Hz? do I need 42 Hz? Do I need 45 Hz? I don't want to be stupid :) Do I need that 38-48 Hz for DJ at events like weddings, party, live mini concert max 800 persons????

I see a guy on youtube with 8 THAM 12 with a midbass B&C 12NDL76 and 6 Void Arcline 6 who make Drum And Bass partyes (but here 60Hz is the bass needed)...this is ...unbelievable

YouTube

exilgrant do you have JBL JRX 215? what about loudspeakers in tham 15? what type of music do you play?
 
Thank you all!

Now the question become like ... Do I need 38 Hz? do I need 42 Hz? Do I need 45 Hz? I don't want to be stupid :) Do I need that 38-48 Hz for DJ at events like weddings, party, live mini concert max 800 persons????

I see a guy on youtube with 8 THAM 12 with a midbass B&C 12NDL76 and 6 Void Arcline 6 who make Drum And Bass partyes (but here 60Hz is the bass needed)...this is ...unbelievable

YouTube

exilgrant do you have JBL JRX 215? what about loudspeakers in tham 15? what type of music do you play?


That question you have to answer your self :D

Personally I'm more than happy with how low my THAM15's go and everyone who's played on them has been more than happy.



2 of them takes up about the same space as a dual 18 BR cabinet but the SPL is black and white.... It's like having 2x dual 18 bass reflex cabs... so essentially it's taking up half the space for the same SPL.

With 8 THAM12's you'll probably be pushing 130-140db!
 
in JRX215 are D220 Ti (675 g/24 oz magnet) and 15" JBL M115-8A, but I have a huge driver in my other pair of topers, 15" 2 way BR (P-Audio D72 3" voice coil with 11.5 kg/405 oz magnet, 2" exit with P-audio Winner 15) ... nice topers, but I need 3 or 4 subs with 18" per side... so I keep the 15" BR in my garage.... I use EV SX 300 because sound ok, and are scalable (small parties just 2 are enough + a bass)... so, for me is hard, maybe I will search some dual12" or multiple THAM 12" ... I do need powerfull bass
 
With 8 THAM12's you'll probably be pushing 130-140db!

With 4 pieces B&C 12NW100 in THAM 12 at 2x2.500W I hope that simulation are real, the simulation say 142 dB without the coupling effect together ... maybe a +3dB will be obtained... maybe more... but I don't know if 48-78 Hz from THAM are enough .... That's the question :) :) :)

I hope that sound from THAM is better (more precise, tuneful, real for live drums or bass guitar) than BR ...
 
I think the question is what your intended audience would be happy with.

I've yet to be to a party or other session where the participants choose to leave or enjoy themselves because the DJ's system can't get below 50 Hz, for example, but that's just my experience :)

Some of us will notice if the bass seems to be lacking for certain tracks though. A good example - Kes' "Savannah Gras", a Trinidad Soca track from 2019 - a system that's capable of only doing above 50 Hz not going to produce this track's sustained 39 Hz (and 33 Hz, albeit at a lower level) tones. I heard this track recently on a system using a QSC KW181 subwoofer and the "missing" bass was readily apparent, and that system is rated -6dB @ 40 Hz. The track "feels" quite a bit different when the sub 50 Hz is missing. This, and other tracks, are good reasons why my 50 Hz POC6 spends a lot of time at home while my 40 Hz-capable POC3 gets the most playtime at our little get-togethers.

Example track here: YouTube
 
Thank you all!

exilgrant do you have JBL JRX 215? what about loudspeakers in tham 15? what type of music do you play?


The tops are JRX115 (second hand bargin) which have had D220 Ti's installed after the fact. TBH though these are just stand in's for our PM90 Mid tops which are far superior and were getting a few fixs applied at the time.



The dual JRX's were struggling to keep up with the 4x THAM15's which had loads of headroom left.



We play everything from Disco & House to Jungle & d&b.


Going with the THAM12 you get a more compact, lighter speaker but you loose some extension & power handling. Most avereage people wont really notice this unless there is a side by side comparison or your a sound guy tbh.


Two tops and two subs are perfect for small parties. The two tops and four subs we ran was for a party of about 300 and was MORE than enough. Easily fits in a small van or people carrier with the seats folded down.
 
but I don't know if 48-78 Hz from THAM are enough .... That's the question :) :) :)


What BR cabs do you have just now? If we know that then i could probably give you a better answer all round.


Also try sticking a 50/60hz highpass on your current BR. 50hz for the THAM15, 60hz for the THAM12..... It's not 100% scientific but at least it will give you SOME idea haha
 
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