The PHL 1690 is a 16 ohm coaxial driver, nominal diametre 6.5" (17cm) which is able to cover frequencies from 300 to 5000 Hz with a sensitivity to 97 dB/1w/1m. The PHL 1690 is good in a 3 Litre closed cabinet. This coaxial speaker is provided without the high frequency driver, you must equipped the PHL 1690 with a 1" troath compression driver. The mount plate is provided with the speaker to install the compression driver.

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