D20-6 Pure Diamond 3/4" Dome Tweeter Yes a pure Diamond Driver! The new D 20-6 has a membrane made of a single piece of pure diamond. It goes from 2 kHz to almost 100 kHz and shows harmonic distortion magnitudes lower than conventional tweeters. The stiffness to weight ratio of the membrane is about five times higher than even the extremely rigid ceramic drivers. The sound propagation in the diamond material is almost 18,000 m/sec, the highest in any existing material. The D20-6 is manufactured to the exact specifications of the C12 (see below). It may be used as an upgrade to existing loudspeaker boxes using the C12. Frequency range is extended to almost 100 kHz. Ferrofluid loaded for increased power handling. Distortion figures are magnitudes below usual tweeters, even well below the respected C12 which many people already consider to be the best tweeter of the high-end world.
Eff	Re	Fs	Sd	Le	Mms	watts
89.5	6.0	900	6.0	0.04	.09g	200
VC dia.	VC ht.	Flange	Cutout	Flange thickness	Mounting depth	Price Each $2,600.00
18.9mm	2.0mm	82x82mm	64x64mm	6.0mm	56mm

C12-6 Ceramic 1" Dome Tweeter 1" super tweeter. Featuring usable response out to 30 kHz, this unit still has a remarkably low 700 Hz Fs and exceptionally flat response down to 2 kHz. Cone breakup occurs well over 20 kHz. With its 100 W filtered power rating, this is one of the few super tweeters which can be used in a 2-way system.
Eff	Re	Fs	Sd	Le	Mms	watts
89.5	6.0	700	6.1	.04	.2g	120
VC dia.	VC ht.	Flange	Cutout	Flange thickness	Mounting depth	Price Each $195.00
16.4mm	3.0mm	82x82mm	64x64mm	6.0mm	56mm

C23-6 Ceramic 1.2" Dome Tweeter High efficiency, ferrofluid filled tweeter with 1.2" lightweight concave ceramic dome. Usable in 2-way systems or high power 3-way designs. Very high resolution and very good dispersion up to 23 kHz. Low resonance frequency allows first or second order filtering and a crossover frequency as low as 1.4 kHz. Featuring response similar to the C12 in the audible range the C23 adds the virtues of even greater power handling and an incredibly low (for a tweeter) Fs of 350 Hz! Many consider this unit to be the ultimate electrodynamic tweeter.
Eff	Re	Fs	SD	Le	Mms	watts
89.5	6.1	350	8.5	.04	.4g	100
VC dia.	VC ht.	Flange	Cutout	Flange thickness	Mounting depth	Price Each $225.00
19.4mm	5.4mm	106x106mm	89x89mm	6.5mm	67mm

C44-8 Ceramic 2" Midrange 2" midrange. Rated for 1 kHz to 12 kHz operation, this unit is ruler-flat, on- and off-axis, from 400 Hz (Fs is 390 Hz) out to 5 kHz. Perfect choice for 3-way or 4-way systems as high-midrange driver. Very high resolution and very good dispersion up to 15 kHz. In the running for the best midrange on the planet!
Eff	Re	Fs		Le	SD	Mms	watts	Qms	Qes	Qts	Vas
88.5	8.2	390		24.6	.02	1.3g	130	1.19	2.2	.77	.11l
VC dia.	VC ht.	Xmax	Flange	Cutout	Flange thickness	Mounting depth	Price Each $235.00
30.4mm	4.5mm	1.0mm	106x106mm	89x89mm	6.5mm	67mm

C79-6 Ceramic 3" Midrange Midrange driver with 3.5" light weight concave ceramic dome and ferrofluid damping. Recommended as midrange for high quality 3- or 4-way systems. Very high resolution and very good dispersion up to 5 kHz. Fully capable of reproducing the entire fundamental spectrum of human voices and musical instruments, leaving only the low bass and upper harmonics to other drivers. Requires 1.5 to 4 liter sealed chamber (0.05cf to 0.15cf), fully stuffed.
Eff	Re	Fs	Le	SD	Mms	watts	Qms	Qes	Qts	Vas
88.5	5.8	96	.12	75.5	7.2g	120	.96	1.07	.51	3.1l
VC dia.	VC ht.	Flange	Cutout	Flange thickness	Mounting depth	Price Each $290.00
37.7mm	9.2mm	130x130mm	116x116mm	6.5mm	75mm

C82-T8 Ceramic 5" Bass-Midrange Accuton 5" Ceramic cone mid/bass. 152mm round flange with grill. Titanium voice coil former. Spec Sheet $200.00

C89-T6 Ceramic 5" Bass-Midrange Bass-midrange driver with 3.5" lightweight concave ceramic dome, high loss rubber surround and titanium voice coil former. Made without ears for high excursion. Perfect choice for small 2-way systems as bass-midrange driver or high quality 3-way systems as low midrange. Very high resolution and very good dispersion up to 5 kHz. The C89-T6 will be 3dB down at 110 Hz in a 2.5 liter (0.09 cf) enclosure with a Qtc of 0.7 or 80 Hz in a 3 liter (0.1 cf) ported enclosure with a 1" diameter vent by 3.8" long.
Eff	Re	Fs	SD	Le	Mms	watts	Qms	Qes	Qts	Vas
89.2	5.9	33.6	83.3	.4	9.3g	100	3.29	.23	.215	23.5l
VC dia.	VC ht.	Xmax	Flange	Cutout	Flange thickness	Mounting depth	Price Each $305.00
37.7mm	10.2mm	3.1mm	130x130mm	116x116mm	6.5mm	75mm

C95-T6 Ceramic 7" Bass-Midrange Bass-midrange driver with 130 mm light weight concave ceramic dome, high loss rubber surround and titanium voice coil former. Made without ears for high excursion. Perfect choice for 2-way systems as bass-midrange driver or high quality 3-way systems as bass unit. Very high resolution and very good dispersion up to 3 kHz. The C95-T6 will be 3dB down at 80 Hz in a 6 liter (0.2 cf) sealed enclosure with a Qtc of 0.7 or 55 Hz in a 10 liter (0.35 cf) ported enclosure with a 1.5" diameter vent by 5.25" long.
Eff	Re	Fs	Sd	Le	Mms	watts	Qms	Qes	Qts	Vas
89.1	5.9	32	133	.73	13.8g	130	4.0	.30	.279	34.2l
VC dia.	VC ht.	Xmax	Flange	Cutout	Flange thickness	Mounting depth	Price Each $275.00
38mm	16mm	5.0mm	180mm	148mm	5.0mm	108mm

C220-T6 Ceramic 8" Woofer Bass-midrange driver with 172 mm light weight concave ceramic dome, high loss rubber surround and titanium voice coil former. Made without ears for high excursion. Perfect choice for large 2-way systems as bass-midrange driver or high quality 3-way systems as bass unit. Very well suited for subwoofer designs due to low resonance frequency. The C220-T6 will be 3dB down at 53 Hz in a 26 liter (0.9 cf) sealed enclosure with a Qtc of 0.7 or 39 Hz in a 34 liter (1.2 cf) ported enclosure with a 2" diameter vent by 6.5" long.
Eff	Re	Fs	Sd	Le	Mms	watts	Qms	Qes	Qts	Vas
89.6	5.9	20.4	233	.61	31.9g	150	4.49	.29	.27	144l
VC dia	VC ht	Xmax	Flange	Cutout	Flange thickness	Mounting depth	Price Each $420.00
38mm	16mm	5.2mm	222mm	188mm	6.4mm	120mm