TW030WA05 to 08


	These four tweeter models share the same basic design but differ as follows: TW030WA05: 4 ohm, no ferro fluid TW030WA06: 4 ohm, with ferro fluid TW030WA07: 8 ohm, no ferro fluid TW030WA08: 8 ohm, with ferro fluid . Real high-end tweeter design with extremely low resonance frequency and distortion. Thanks to the extensive internal venting between three internal cavities no air inside is trapped. This feature extends the usable frequency range downwards to an extend very rarely found on tweeters. Adding the high power handling this tweeter is the natural candidate for high-end 2-way speaker systems.

		FEATURES

Precision-coated textile diaphragm for improved consistency and high-frequency extension
Extreme internal venting through pole, voice coil former, and top plate to 3 internal chambers
Copper-clad aluminium voice coil wire offering lower moving mass for improved efficiency and transient response
Reflection-free rear chamber design with solid reinforcement ribs
Large ferrite magnet for improved efficiency and transient response
With or without high-stability light ferro fluid
Flexible lead wires for higher power handling and larger excursion
Black anodized magnet structure for increased power handling and reduced power compression
Gold plated terminals to prevent oxidation for long-term reliable connection
Delivered with EVA gasket attached for hassle-free mounting and secure cabinet sealing


	FREQUENCY RESPONSE


	Measuring conditions, SPL Driver mounting: Flush in infinite baffle Microphone distance: 1.0 m Input level: 2.83 VRMS Smoothing: 1/6 oct.


	Measuring conditions, SPL Driver mounting: Flush in infinite baffle Microphone distance: 1.0 m Input level: 2.83 VRMS Smoothing: 1/6 oct.


	IMPEDANCE RESPONSE


	Measuring conditions, impedance Driver mounting: Free air, no baffle Input signal: Stepped sine wave, semi-current-drive, nominal current 2 mA Smoothing: None


	NOMINAL SPECIFICATIONS

Parameter					Unit
Nominal size	30				[mm]
Nominal impedance	4		8		[ohm]
Recommended freq. range	1.5-25				[kHz]
Sensitivity, 2.83V/1m, (average 1-20kHz)	91.5	91	89	88.5	[dB]
Voice coil diameter	30.4				[mm]
Voice coil height	1.7				[mm]
Air gap height	2.5				[mm]
Voice coil resistance, RDC	3.4		6.3		[ohm]
Voice coil inductance	20		28		[μH]
Magnet weight	260				[g]
Effective radiating area, Sd	11.5				[sq.cm]
Power handling, continuous, IEC 268-5, 2.0kHz@12dB/oct.	50	60	50	60	[W]
Resonance freq., Fs	450	450	470	470	[Hz]
Moving mass, incl. air (free air, no baffle)	0.40	0.42	0.37	0.39	[g]
Force factor, Bxl	2.0	2.0	2.4	2.4	[Tm]
Mechanical Q, Qm	1.5	1.2	1.6	1.3	-
Electrical Q, Qe	0.96	1.01	1.19	1.25	-
Total Q, Qt	0.59	0.55	0.68	0.64	-
Suspension compliance, Cms	0.31	0.30	0.31	0.30	[mm/N]
Equiv. air volume, Vas	0.059	0.056	0.059	0.056	[lit.]
Total unit net weight	0.59				[kg]
Krm (note 1)	100	152	67	64	[μohm]
Erm (note 1)	0.85	0.82	0.91	0.92	-
Kxm (note 1)	3.3	2.8	5.1	4.3	[mH]
Exm (note 1)	0.56	0.56	0.56	0.56	-

Note 1. It is generally a rough simplification to assume that loudspeaker transducer voice coils exhibit the characteristics of an inductor. Instead it is a far more accurate approach to use the more advanced model often referred to as the “Wright empirical model”, also used in LEAP-4 as the TSL model (www.linearx.com), involving parameters Krm, Erm, Kxm, and Exm. This more accurate transducer model is described in a technical paper (PDF) here.


		Specifications are before burn-in

	OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)


	CONNECTIONS (nominal dimensions, in mm)



	PACKAGING AND ORDERING INFORMATION

Part no. TW030WA05-01	4 ohm, no ferro fluid	Individual packaging (one piece per box)
Part no. TW030WA05-02	4 ohm, no ferro fluid	Bulk packaging
Part no. TW030WA06-01	4 ohm, with ferro fluid	Individual packaging (one piece per box)
Part no. TW030WA06-02	4 ohm, with ferro fluid	Bulk packaging
Part no. TW030WA07-01	8 ohm, no ferro fluid	Individual packaging (one piece per box)
Part no. TW030WA07-02	8 ohm, no ferro fluid	Bulk packaging
Part no. TW030WA08-01	8 ohm, with ferro fluid	Individual packaging (one piece per box)
Part no. TW030WA08-02	8 ohm, with ferro fluid	Bulk packaging




			Latest update: August 9, 2021

MORE INFO

PDF data sheet

Exploded view
(770KB PNG)

Cross section view
(510KB PNG)