User manual FENDER 1225HP

[. . . ] We are sure you will find it both a unique and effective sound reinforcement product, providing years of trouble-free service day in and day out. The 1225HP Loudspeaker System is a professional, full-range, two-way, loudspeaker designed for the most demanding permanent or portable sound reinforcement requirements. Moreover, these speakers are ideal for use as a two-way system or as the mid / high pack in a three-way set-up incorporating a Fender subwoofer loudspeaker system. [. . . ] The total impedance when connected in parallel is: 1 Zp = = 5. 3 ohms. 1 1 8 + 16 SERIES IMPEDANCE 16* Cabinet B Impedance 8 4 2 18 10 6 4 20* 12 8 6 24 16 12 10 32 24 20 18 + Z s = Z + Z . . . Z 1 2 n + + - Resistance in per foot AWG Section (30. 5 cm) @ 77º F (25º C) 2 [mm ] Cross- 18 16 14 12 10 8 0. 83 1. 32 2. 10 3. 32 5. 27 8. 38 . 00651 . 00409 . 00258 . 00162 . 00102 . 00064 A B 2 4* 8 16 Cabinet A Impedance *Example- Cabinet A is 4 ohms. The total impedance when connected in series is 4 + 16 = 20 ohms. 4 HORN INSERTS To change the dispersion pattern from 90º to 60º, first remove the Phillips Head screws from the grille and lift the grille away from the cleat. If your insert has a plug on it, you may wish to remove it for easier installation. To do so, carefully cut it off using a razor blade. To attach the horn inserts, first place the wider end of the insert under the front lip of the horn. Next, guide the smaller end of the insert under the ribs near the throat of the horn. The insert is secured in place by the 3 ridges. When the switch on the back of the speaker is in the biamp mode, the internal crossover and high frequency attenuator are disabled. Thus, an external crossover must be used with the speaker and two channels of power amplification will be required: one for the low frequencies and another for the high frequencies. In biamp mode, the connections are as follows: Phone Jacks Frequency Lows Lows Highs Highs Polarity Positive (+) Negative (-) Positive (+) Negative (-) Left N/A N/A Tip Sleeve Right Tip Sleeve N/A N/A Speakon 1+ 12+ 2- Installing the Horn inserts. To reinstall the grille, simply place the grille back upon the cabinet's cleat and secure it using the previously removed screws. With the inserts installed, the horizontal coverage angle is now reduced to 60º. The high frequency driver for all enclosures is a compression driver using high technology polymer materials to handle large amounts of power. This compression driver is mated to an innovative Controlled DispersionTM horn that allows a single horn to be used for a number of applications. The quick placement or removal of the horn inserts can change the horizontal coverage pattern from 60º to 90º. When both inserts are installed, a 60º coverage pattern is achieved. This is useful in multi-cabinet tight pack arrays where a narrower consistent coverage pattern is required. [. . . ] An example of this configuration is shown on the next page (7). It is strongly recommended that a fourth-order "Linkwitz-Riley" or a digital FIR fourth-order active crossover be used. The crossover frequency for the 1225 HP should be set at approximately 2200 Hz. [. . . ]