I have an RA Labs (RDL Acoustics) center channel speaker, and from what I can tell the tweeter is blown on it. RA Labs/RDL is long out of business, but from what I've gathered, they used fairly standard OEM parts. The tweeter is a 1" (25mm) copolymer design, with a rectangular plastic mount. Here are the specs on the center channel speaker as a whole: Low Frequency Response -- -3dB at 55 Hz -8dB at 39 Hz Crossover Frequency -- 3 kHz Impedance -- 6 ohms Sensitivity -- 89 dB SPL Amplifier Power -- 15 to 100 Watts Dimensions -- 7" x 20½" x6½" (178 mm x 521 mm x 165 mm) Weight -- 10 pounds each ( 4.5 kg) I don't know too many places to get a tweeter from, but partsexpress.com seems to have a few that might work. The DAYTON 1/2" SHIELDED MYLAR DOME TWEETER looks almost identical to the RA Labs tweeter, though it's stats are different than the RA Labs speaker as a whole: Mylar dome tweeter features a fully shielded magnet structure for audio/video applications. Ferro fluid cooled * Power handling: 30 watts RMS/45 watts max * Voice coil diameter: 1/2" * Impedance: 8 ohms * Frequency response: 5,000 - 20,000 Hz * Magnet weight: 1/2 oz. * Fs: 2,600 Hz * SPL: 90 dB 1W/1m * Net weight: 2 oz. * Dimensions: A: 3-1/2" x 2-1/2", B: 1-15/16", C: 7/8", D: 1-7/16", E: 5/8". I'm not sure if the GOLDWOOD GT-336 1" TITANIUM DOME TWEETER 4-1/2"x3-1/2" would physically fit or not, but the specs seem closer: All of these tweeters feature a 1" pure titanium dome with a phase shield to provide a controlled high frequency roll off. * Power handling: 45 watts RMS/65 watts max * Voice coil diameter: 1" * Impedance: 8 ohms * DC resistance: 6.8 ohms * Frequency response: 3,500-20,000 Hz * Magnet weight: 8.5 oz. * Fs: 1,500 Hz * SPL: 90 dB 1W/1m * Net weight: 1-1/8 lbs. How close do the specifications of the tweeter need to be to match the speaker? Are those good tweeters? Where else can I get a tweeter? Any help greatly appreciated!