Assessments - 5, GPA: 4.2
(
)
)
|
Facilidade de uso
Auxiliary low and high outputs are available for connecting additional amplifiers. Included withthecrossover input option are single inline package (SIP) resistor networks which allow preselection between standard crossover frequencies of 160Hz, 500Hz, and 1.2KHz. 360° of phase control is provided for proper acoustical alignment of high and low frequency drivers. Constant Directivity Horn EQ is provided for both small and large hom designs. A 3rd-order 20 Hz high-pass filter is included on the low frequency crossover output to remove inaudible subsonic signals. MIC/LINE MIXER INPUT OPTION The mixer input option provides four high-impedance line inputs and two balanced low-impedance microphone inputs, each with its own level control. A switchable 200 Hz high-pass filter is provided on the mic inputs to reduce unwanted low frequency noise. An internal jumper allows selection of 15 Volt phantom power applied to the mic inputs for use with condenser mics. The option has a master level control and selectable stereo, mono and bridging modes, insert Points are available for patching external processing into the left and right channels. Ch. 2 Umitcr Threshold Limit (dB) I Stereo Mono +18 +3 t . ' -3 -28 4^6 ;/ 305 ^ ll 2—; '"/ 0*9 \.....> 0 -10 Limiter Level In/Out Norm Bridge Ch.1 limiter Threshold kmfc (dB) I *18. +15. r- •as '■ =-12 V9 -6 ASHI-Y CL-2 PDWERCARD Input Option Stereo Limiter [+} (-) trtfMJt Ground î [-) M X X X Channel 2 Chassis Ground .....Os ..... ) O 10 !v Levo! Limiter In/Out ■ Channei 1 (Mono) Figure 7: Limiter Input Option •••••••••••••••••••••••••••••••••••••••A* Ashly FTXJCFT Owners Manual Page 8 METERS The FTX amplifiers are equipped with front panel meter displays which respond to peak output voltage. An eleven-segment, three-color LED display covers a 27 dB range. The green LED’s at the left end of the meter arrays indicate a normal thermal status. In the event that the amplifier overheats, these LED's will turn off but the power switch will remain illuminated, indicating the thermal protection status. When the heat sinks return to safe operating temperatures, the amp will turn itself back on and illuminate the left-most green LED’s. In the event of a blown speaker fuse, the meter display of the affected channel turns fully on. THIS DOES NOT MEAN THERE IS DC AT THE OUTPUT! o ÉÜ].........—................................................ZZZ..gl.j figure 3; FTX-2ÖOO Front Panel TYPICAL APPLICATIONS STEREO OPERATION ßoth Switches Ou; Figure 4: Operation in Normal. Stereo Mode •••••••••••••••a« Ashly FTXJCFT Owners Manual >«•••••••• Page 5 MONO OPERATION Mono Swisi.il In ASHLV © U ! Mono Soura Gwirtd Two I I ),. Figure 5: Operation in Normal Mono Mode With the MONO switch depressed, the channel I input is routed to both amplifier channels. Both channels are then controlled by the channel 1 level control. Both outputs will be identical and can be connected to separate speakers. CAUTION! NEVER CONNECT THE RED BINDING POSTS TOGETHER! BRIDGING OPERATION Both Swischos In 0 0000 0 0000 t 0 000001)00 { OOOÜOOOÖO ^ 0(1)0 o o o o a 0**0 } 1 / ! Li!~/ p ob'j ooh 6 66 o o ä :.......v[J Mono Saurco \ Figure 6: Operation in Bridging Mode Ashly FTXJCFT Owners Manual Page 6 To operate in bridging mode, depress both the MONO switch and the BRIDGING switch . The MONO switch depressed routes the channel 1 input to both amplifier channels and the BRIDGING switch depressed inverts the phase of the input signal before it is fed to the channel 2 power amp section. The two amplifiers’ outputs are therefore 180 degrees out-of- phase. The channel I red binding post is used as the positive speaker terminal and the channel 2 red binding post becomes the negative speaker terminal. The black binding posts are not used. CAUTION! NEVER GROUND EITHER RED BINDING POST! In bridging mode, the output voltage applied to the speaker is doubled, thus providing more power to a single speaker. However, each output channel “sees” just one-half of the load impedance when in bridging mode. For example, connecting an 8-ohm speaker in bridging mode presents a 4-ohm load to each channel of the amplifier. Use caution when operating in bridging mode not to exceed the power handling capability of the speaker and the minimum load impedance on the amp. INPUT OPTIONS Input option panels are available to provide built-in features such as a stereocompressor-limiter, a mic and line mixer, a crossover for bi-ampltfied systems, and input transformers for signal isolation. Ashiy FIX series amplifiers as well as ail other Ashly amps (excluding the single rack space SRA-120) will accept Ashly input option panels. A brief description of currently stocked input options follows. Consult your dealer for detailed information on the input options, or call the factory. TRANSFORMER INPUT OPTION The input isolation transformer can be installed directly into the standard input supplie...
Este manual também é adequado para os modelos :receptor e amplificador - MOS-FET POWER AMPLIFIERS CFT-SERIES (483.9 kb)