TC Sounds

[Bosstradamus 10+ year member]

Are they really the best sounding/lowest distortion subs or is this just hype? How do you tell the difference by ts specs? I recently heard a LMS ultra and it did sound pretty good but i had a AA Havoc that i thought sounded just as good and got much louder.

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[Liquid Bass 10+ year member]

Are they really the best sounding/lowest distortion subs or is this just hype? How do you tell the difference by ts specs? I recently heard a LMS ultra and it did sound pretty good but i had a AA Havoc that i thought sounded just as good and got much louder.

one of the best in the business. They have made many subs for other companies like eclipse lightning audio etc.

 

[Liquid Bass 10+ year member]

Are they really the best sounding/lowest distortion subs or is this just hype? How do you tell the difference by ts specs? I recently heard a LMS ultra and it did sound pretty good but i had a AA Havoc that i thought sounded just as good and got much louder.

one of the best in the business. They have made many subs for other companies like eclipse lightning audio etc.

 

[ciaonzo 5,000+ posts]

Believe the hype, son.

 

[Linkz 10+ year member]

They are low distortion because of the variable wind coil. It maintains a constant bl curve up to a certain range of excursion (not sure what range it is, just know that it is further than other subs without the coil). Most subs have a parabolic curve where each mm of excursion either way will result in less and less bl. The reduction in bl is a major contributor to distortion.

As far as I know this is accurate. Someone correct me if I am wrong.

 

[power-fanatic07 5,000+ posts]

Box is everything. I seriously doubt that the havoc could compete with a LMS IF they are both in their own enclosure, not the same enclosure but an enclosure made to bring out the most of each driver. The LMS can also take alot more power than the havoc while sounding just as good if not better.

 

[ciaonzo 5,000+ posts]

Got to post #116 and read about the THD comparison against three other outstanding drivers, one of them an XBL^2 design.

LMS-5400 buy-in - Page 12 - Home Theater Forum and Systems - HomeTheaterShack.com

 

[audio_phill 10+ year member]

Build Quality, Driver consistency, and linear displacement are second to none, there are better sounding drivers yes, but on average the Pre china TC stuff has no equal for their purpose.

 

[ciaonzo 5,000+ posts]

^^^ And this guy has played with many a TC.

 

[audiophile831 10+ year member]

Build Quality, Driver consistency, and linear displacement are second to none, there are better sounding drivers yes, but on average the Pre china TC stuff has no equal for their purpose.

Which of the current models are made in china? I have also considered jumping the TC bandwagon..lol

 

[Liquid Bass 10+ year member]

Build Quality, Driver consistency, and linear displacement are second to none, there are better sounding drivers yes, but on average the Pre china TC stuff has no equal for their purpose.

The parts are the same quality right?

 

[audio_phill 10+ year member]

Which of the current models are made in china? I have also considered jumping the TC bandwagon..lol

Ur

The parts are the same quality right?

All of them and not quite on par design wise and I go the extra mile to snag pre China stuff

 

[Bosstradamus 10+ year member]

Box is everything. I seriously doubt that the havoc could compete with a LMS IF they are both in their own enclosure, not the same enclosure but an enclosure made to bring out the most of each driver. The LMS can also take alot more power than the havoc while sounding just as good if not better.

I have heard both in their own enclosure,the havoc was in a ported enclosure(15") the TC was in a sealed enclosure(18"). The Havoc sounded awesome and got nasty. The TC sound real good especially for an 18,but it wasn't very loud. Havoc on a 1800 rms hifonics amp,the TC off of two Zapco c2k 9.0's. I not saying the TC didn't sound good because it sounded great,just not as loud as i thought an 18" would be.

 

[ciaonzo 5,000+ posts]

The 5400 isn't the loudest out there but no matter what level it generates, any driver generating the exact same output is creating gobs more distortion. And that's the point, that's what it was designed for - low distortion.

 

[audio_phill 10+ year member]

I have heard both in their own enclosure,the havoc was in a ported enclosure(15") the TC was in a sealed enclosure(18"). The Havoc sounded awesome and got nasty. The TC sound real good especially for an 18,but it wasn't very loud. Havoc on a 1800 rms hifonics amp,the TC off of two Zapco c2k 9.0's. I not saying the TC didn't sound good because it sounded great,just not as loud as i thought an 18" would be.

lol, the lms ultra is a low q woofer, only fools with insane power on tap and headroom to match and an audiophile eq should even attempt it. The havoc took it simply because the lms was being ran improperly.

Idea enclosure for the lms 5400 is 4.3net @ 25Hz, in sealed, optimum would be 3.4 for an f3 of just over 36hz. Sealing it will give you 4.7dB of loss over the vented enclosure @ 30Hz, and 3.4dB loss at 25Hz, 3dB loss @35Hz...

Heres tsp's for original vs new (china version)

Old Version

Re = 4.0107 ohms

Fs = 22.4333 Hz

Zmax = 52.5281 ohms

Qes = 0.4130

Qms = 4.9959

Qts = 0.3815

Le = 1.9970 mH (at 1 kHz)

Diam = 390.8425 mm ( 15.3875 in )

Sd =119975.7382 mm^2(185.9628 in^2)

Vas = 188.3549 L ( 6.6517 ft^3)

BL = 27.3490 N/A

Mms = 546.4212 g

Cms = 92.1140 uM/N

Kms =10856.1182 N/M

Rms = 15.4164 R mechanical

Efficiency = 0.4838 %

Sensitivity= 88.8647 dB @1W/1m

New Version

Re = 4.1115 ohms

Fs = 21.8718 Hz

Zmax = 82.0565 ohms

Qes = 0.3752

Qms = 7.1129

Qts = 0.3564

Le = 2.4618 mH (at 1 kHz)

Diam = 390.8425 mm ( 15.3875 in )

Sd =119975.7382 mm^2(185.9628 in^2)

Vas = 192.8393 L ( 6.8101 ft^3)

BL = 29.0781 N/A

Mms = 561.4697 g

Cms = 94.3070 uM/N

Kms =10603.6641 N/M

Rms = 10.8478 R mechanical

Efficiency = 0.5053 %

Sensitivity= 89.0534 dB @1W/1m

Very efficient but lower Q than needed to be an authority subsonic, and not have a more than 1dB output deviation across its usable bandwidth. The LMS 4K 10 has a flatter bandwidth and can play much lower than the LMS 5400, just not with ridiculous output.