[rodH]

Some information I found on an ebay auction in the Philipines on the TC1000 (not avail on the TC sounds sight any longer):

TC Sounds Subwoofer Driver
TC-1000 Dual 4Ω voice coil

From The Manufacturer
The accurate, smooth and historic TC driver

The TC-1000 is the ideal driver for anyone looking for powerful clean bass with superb quality for either the home or mobile environment. With a standard 135 ounce magnet structure, 2" wide all aluminum 4 layer voice coil, and up to 1.5" of highly linear excursion, this driver simply obliterates the competition. Its innate low distortion quality makes it seemly intended for high fidelity applications, but because of its high efficiency, impressive power handling and class leading displacement, the TC-1000 simply embarrasses retail SPL drivers costing twice the price with motors half its size! It can handle 400 watts of continuous power, but don’t be afraid to feed it 1000 clean watts as the voice coil will harness that power and deliver surprising sound pressure levels. With adequate headroom, the dynamic capability of the TC-1000 will demonstrate ultra high quality bass typically found in high end home theater subwoofers. Did we mention we even hand build these drivers in California too?

The TC-1000 subwoofers are engineered for sealed, ported or passive box enclosures and designed with medium to high power capabilities in mind. We recommend an amplifier between 200 and 1000 watts RMS per driver.

Advanced high excursion soft part system

• High excursion 8.0" linear roll poly-cotton spider
• Intergraded woven leads to prevent lead-slap
• 2" diameter, 4-layer aluminum wire voice coil with an anodized aluminum former
• Single or dual 3.7Ω (4 ohm nominal) voice coil configuration
• Lightweight brushed and powder coated aluminum cone
• 1" wide long throw, highly durable NBR surround
• High quality thermal flexible epoxies to ensure longevity which can't match the TC-1000's distortion vs. SPL performance...

Performance
• Effective motor force of 60 Newtons2 per watt (BL2/Re)
• 400 watts continuous power (1200 watts peak)
• 24mm BL XMax (voice coil, one-way)
• 37mm XMech (mechanically limited, one-way)

Key Features
• 60 Newtons2/watt Motor Force
• 400 Watts Sustained Power
• 2" Anodized Aluminum Voice Coil
• 24mm XMax
• Single Dish Aluminum Cone
• High Excursion 1" NBR Surround
• 135 Ounce Magnet Structure
• Copper Shorting Ring
• Cast Aluminum Frame
• 8.0" Diameter Suspension System

Dimensions

Driver 12TC-1000
Cutout Diameter 11.05"
Basket Diameter 12.65
Gasket Height 0.65"
Mounting Depth 6.25"
Displacement 0.09 ft3
Weight 19.9 lbs

Specifications

12" TC-1000

Qts
0.282
Qes
0.305
Qms
3.78
Fs
19hz
Res
3.70Ω
Ls
2.38mH
Lp
3.51mH
Rp
2.99Ω
Dia
240mm
Vas
132l
mms
153g
cms
460um/N
bl
15.4T*m
Spl
86.9dB