UPGRADE TODAY. HEAR THE DIFFERENCE: High Frequency Bullet Tweeter, capable of adding brilliance and articulation to any professional loudspeaker system. POWER YOU CAN RELY ON: With high frequency response up to 20,000 Hz and a sensitivity of 105 dB at 1W/1m, the TW700Ti-4 SLIM can keep up with your custom door speaker system. SOLID STRUCTURE:4-inch square high compression PRO bullet tweeter features flat sides allow for close side by side mounting. DESIGNED FOR EFFICIENCY: The new design features a Slim magnet and throat, making it the perfect Pro Audio On Wheels tweeter for your car audio application. SLIM PROFILE: This tweeter is Slim version of our famous and powerful TW700ti; only 1.89" of mounting depth. SLIM PROFILE: This tweeter is Slim version of our famous and powerful TW700ti; only 1.89" of mounting depth.