Sold TC/AP LMS Ultra 18

[audio_phill 10+ year member]

The Driver is not even broken in yet, a few finger prints and 2 dings, one so tiny ya have to look closely at multiple angle to finally get a reflection to make it visible, the other is more noticeable but still only 1/4 in dimple from a nickel (5 cents) I tossed at the wife that was reflected on to the cone, I took photos all around and used light reflections to make things look as bad as I could.

Asking $875 shipped con-us. Way better than the new one (thicker more durable basket and better power handling (5K instead of 2K)

Pics are here:

TC Sounds AP LMS Ultra 18 pictures by AudioPhill - Photobucket

Click to read more...

 

[mendon mafia 10+ year member]

when i said "new one?" i was meaning they are making new ones? I didnt know about this

 

[audio_phill 10+ year member]

when i said "new one?" i was meaning they are making new ones? I didnt know about this

I didnt mean anything bad by my reply, yeah, theres new one's TC SOunds is officially back and until someone explains why all the changes in the lineup and how they really aren't any different, I will consider to call Thilo's new line-up, the worst TC move ever, lol.

 

[Kyle_Keating 10+ year member]

There are no downgrades to any new TC product. Different ratings have been implemented for all drivers.

 

[Kyle_Keating 10+ year member]

Explain the difference in ratings and maybe I'll no longer feel so horrid towards the new line-up

RMS rating before was for the amplifier, not the driver. Its best to match TC drivers to high power amps that exceed the RMS spec of the driver to achieve peak performance for short durations - this is not indifferent to any driver really. Drivers DO NOT have RMS specs and its a big fallacy in car audio so we did something a little different that was more similar to pro audio. We rate a long term power and short term power. Long term is basically a safe sinwave or pink noise average single for a long continuous period of time. The peak power is the safe limit for any one short burst not exceeding xmax. This is 8000 watts for the LMS-Ultra 5400 and that’s the maximum recommenced power for the driver. It would be 4000 watts for the LMS-R and Axis which are rated at 1000 watts long term.

Xmax has changed to 3 specs:

x-mech - coil hits the t-yoke

x-max - FEA result of 70% of BL left

x-geometic (Coil – Gap) / 2

The axis is lower because of the shape of the BL curve due to the high gap, the axis actually has a longer coil than before and higher xmax, but its lower on the new rating scale.

Apart front that, the 15 and 18” cones are all thicker by 20%

5400 gets larger spiders and increase xmech

All the top assemblies are redesigned with a significantly better attachment procedure

All motors are shipped in separate boxes

All voice coil formers have changed from AL or Ti to strictly Stainless Steel which is much lower distortion than AL and has better thermal behavior than Ti when it comes to warping or delaminating.

All in all, we have never been more pleased with the product line. The prices are designed under a dealer structure. The LMS-Ultra 5400 has been reduced b 400 dollars over the AP version.

And your friend Brian should contact TC so he can get a replacement assembly covered by warranty if he really did break a basket.. which by the way has not changed, so I'm a little curious how you crack 0.15" of aluminum from a wood screw? What part of the frame cracked? The mounting thickness is the same for all TC frames for the last 10 years, 0.15" and the motor mounting surface is 0.28" thick aluminum.

 

[audio_phill 10+ year member]

70% BL on the Axis used to be 30mm, reminds me of that song that says "walk around in circles" I keep getting circles, lol. Why did the Fs's change and the Q's change.

The mounting lip didnt crack it was the ".28"" aluminum that the screws go through to hold the basket to the motor, pretty sure he did contact PE...

The arms of the basket do not look as thick as my ultra basket's. Baskets are not the same, if so the new TC LMS 5400 top assembly would have fit my older TC LMS Ultra... or at least thats what Thilo said and I tend to believe the man, lol.

SS coils are also heavier than AL or Ti, they may hold higher temps before warping, but SS doesn't dissipate heat as well does it??

I still dont understand why TC is "under-rating" a lot of their specs, 1010 steel has a tendency to hold a fairly flat BL across it's gap length (hence the good function of underhung drivers) why is the BL not constant in the Axis (3HP) Gap?

Why were the Fs's of the LMS-R's higher than the previous model? Seems like the line up is geared a lil more mass market than it used to be??

 

[audio_phill 10+ year member]

Duplicate Somehow, no double click due to impatience, lol.

 

[big bass joel 10+ year member]

good honest seller here guys!//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Kyle_Keating 10+ year member]

*There was no previous model for the LMS-R, its a replacement for the Revo, FS is nearly identical because the suspension and surround are identical - moving mass is slightly more.

*Axis is overhung, not underhung. overhung speakers are not linear unless you apply lms or use two gaps (xbl^2)

* SS coils are AL coils. I was talking about former material differences not coils. All of the new TC coils are AL as always.

*AP Axis xmax was overestimated due to BL curve difference - steeper but wider, xmax is tricky to spec because its based on a 2D curve not 1D number (scalar) its a gross simplification. New axis has a longer coil than before.

*Arms at the spider landing of the 18" frame were machined out to accommodate the larger spiders. The frame was very thick there compared to the rest of the arm so this was acceptable.

*Torque specs should be used because the motor screws are going into steel so we'll add that in and get Brian's top replaced.

 

[audio_phill 10+ year member]

Thats kinda what I was saying, just needed you to spell it out, lol. The LMS-R just sounds like it should be the replacement for the LMS line, lol.

 

[hispls 5,000+ posts]

****, I hope you have the 5400 in a week when I get rightside up with my cash flow.....

 

[audio_phill 10+ year member]

Seems like it will still be available, lol

 

[Johnny Law.Lulz 5,000+ posts]

Where in Va are you ?

 

[audio_phill 10+ year member]

Atkins 24311

 

[Johnny Law.Lulz 5,000+ posts]

never heard of it. Im in King George, east of fredericksburg.

 

[audio_phill 10+ year member]

never heard of it. Im in King George, east of fredericksburg.

290 miles from me.