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  2. Loudspeaker time alignment - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker_time_alignment

    This particular crossover has the property that at the crossover frequency the electrical summing is flat (i.e., there is no peak or dip) and the signals being sent to the woofer and tweeter are always in phase (180° out of phase in the LR2 case, which is corrected by simply inverting the tweeter's signal).

  3. Thiele/Small parameters - Wikipedia

    en.wikipedia.org/wiki/Thiele/Small_parameters

    Thiele/Small parameters (commonly abbreviated T/S parameters, or TSP) are a set of electromechanical parameters that define the specified low frequency performance of a loudspeaker driver. These parameters are published in specification sheets by driver manufacturers so that designers have a guide in selecting off-the-shelf drivers for ...

  4. Midwoofer-tweeter-midwoofer - Wikipedia

    en.wikipedia.org/wiki/Midwoofer-tweeter-midwoofer

    The midwoofer-tweeter-midwoofer loudspeaker configuration (called MTM, for short) was a design arrangement from the late 1960s that suffered from serious lobing issues that prevented its popularity until it was perfected by Joseph D'Appolito as a way of correcting the inherent lobe tilting of a typical mid-tweeter (MT) configuration, at the crossover frequency, unless time-aligned. [1]

  5. Audio crossover - Wikipedia

    en.wikipedia.org/wiki/Audio_crossover

    A passive crossover circuit is often mounted in a speaker enclosure to split up the amplified signal into a lower-frequency signal range and a higher-frequency signal range. A passive crossover splits up an audio signal after it is amplified by a single power amplifier, so that the amplified signal can be sent to two or more driver types, each ...

  6. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    This is achieved by splitting the desired frequency range into separate bands and employing separate drivers for each band of frequencies, and feeding them through a crossover filter network. Steep slope crossover filters are most effective at IMD reduction, but may be too expensive to implement using high-current components and may introduce ...

  7. Thinning Hair? These High Frequency Wands Will Zap Your ... - AOL

    www.aol.com/thinning-hair-high-frequency-wands...

    Ultima 9 Classic LaserComb Hair Growth Device. Instead of high frequency, this hair growth-stimulating device uses LED light and soothing bristles to minimize hair fall and boost growth for denser ...

  8. Tweeter - Wikipedia

    en.wikipedia.org/wiki/Tweeter

    These vintage cone tweeters exhibited very flat frequency response, low distortion, fast transient response, a low resonance frequency and a gentle low-end roll-off, easing crossover design. Typical of the 1960s/1970s-era was the CTS "phenolic ring" cone tweeters, exhibiting flat response from 2,000 to 15,000 Hz, low distortion and fast ...

  9. Road Test: These New Hair Tools Are Making Our Lives Easier

    www.aol.com/lifestyle/road-test-hair-tools...

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