User manual FENDER SPL 1211 MARK II

[. . . ] After moisture sealing, the SPL 1211 MARK II Loudspeaker cabinets are covered in tough black indoor/outdoor synthetic carpet covering. TheSPL 1211 MARK II Loudspeaker cabinet also features metal corners and rubber feet for a longer life and lasting looks. Only the finest components are used to provide maximum efficiency and response. In order to more fully understand the operational characteristics of your SPL 1211 MARK II Loudspeaker enclosure, please read through this operational user's guide. CAUTION: Almost all speakers produce strong magnetic fields which may interfere with the normal operation of nearby electronic devices, including televisions and computer video monitors. [. . . ] Higher impedance speakers will draw less power from the amplifier than lower impedance speakers will draw. At Fender ®, we recommend connecting multiple speakers in parallel for several reasons. First, if one speaker fails, the others will continue to operate. Second, because in a series connection one speaker affects the output of the other speakers, unpredictable frequency response is a concern. Third, most speaker cabinets are already wired for parallel connections making parallel connections the most common wiring method. Below are two charts demonstrating how to calculate both parallel and series impedance. PARALLEL IMPEDANCE Zp = Cabinet B Impedance 16* 5. 3* 8 4 8 5. 3 1 1 1 1 + Z 1 Z 2 . . . Z n + + - Keep in mind, power and audio signal cables are the most common sources of sound system failure. Well made and carefully maintained cables are essential to the reliability of the entire sound system. If long speaker cables are required, it is important to ensure the cable`s gauge is sufficient to transfer all of the available amplifier power to the speakers rather than absorbing the power itself. As a rule of thumb, larger wires are better since they supply more power to the speakers (larger wire has smaller gauge numbers). Below are two charts listing speaker wire gauges and recommendations for best results. SPEAKER WIRE GAUGE SPEAKER WIRE LENGTH 100'-UP (30. 5 m-UP) 10 12 12 14 14 16 18 18 18 50'-100' (15. 25-30. 5 m) *25'-50' (7. 60-15. 25 m) 14 *16 16 18 18 18 10'-25' (3. 05-7. 60 m) 0'-10' (0. 00-3. 05 m) A B 4 *8 16 SPEAKER IMPEDANCE [z] *Example - If the speaker wire length required is between 25-50 feet (7. 6015. 25 meters) and the speaker impedance is 8, the minimum recommended speaker wire gauge is 16. 8* 16 Cabinet A Impedance + - *Example- Cabinet A is 8 ohms. The speaker may be used as a single unit, as part of a pair, or as part of a group of widely spaced enclosures, in any case, maximum horizontal coverage will be desired. Examples of these types of setups are shown. HP 1225inet ab C Stage 1225 CabinHP et SPL 1211 MARK II SPEAKER CONNECTIONS In normal operation (using the passive internal crossover), the 1/4" jacks and the Speakon TM Connectors are wired in parallel allowing any one of the connectors to be used as an input and any other as an output. This allows "daisy chaining" of multiple loudspeakers, eliminating the need for several long, cumbersome runs of speaker cable. During normal mode, the connections are as follows: Polarity Positive (+) Negative (-) Phone Jack Tip Sleeve SpeakonTM 1+ and/or 2+ 1- and/or 2- Audience Two speakers arranged as a mono or stereo pair requiring maximum horizontal coverage 30º SPL 1211 MARK II Cabinet SPL 1211 MARK II Cabinet Two speakers in a "loose pack" array requiring maximum horizontal coverage NOTE: When setting up your SPL 1211 MARK II enclosures, be sure to place the cabinets in such a way as to minimize overlapping radiating patterns. 5 SETUP SUGGESTIONS, CON'T. A second consideration is for feedback and bass performance. If the speaker is placed near a large, flat wall, the bass output will increase by approximately 3 dB. Placing the speaker near a wall can cause feedback. If this occurs, the speaker must be moved. A third consideration is to what degree the speaker should be "heard and not seen", especially in permanent installations. Remember, where the speaker cabinets are placed will affect both their tone and radiating patterns. it may be ordered directly from Fender using the form included with your new speakers. UNPOWERED MIXER MAIN OUT MONITOR OUT IN PCN-2 ELECTRONIC CROSSOVER BI-AMP OPERATION For versatility and increased headroom, some users may choose to use an active electronic crossover / processor, such as the Fender PCN-2 or PCN-4, with the system. The electronic crossover takes the place of the internal crossover of the speaker system. [. . . ] A typical set-up of a bi-amp configuration is shown at right. For those situations requiring a subwoofer, HP loudspeakers can still be used if a three-way electronic crossover is used. 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. [. . . ]