FTX-1001 FTX-1501 FTX-2001 CFT-1800 Power Amplifier Series III Operating Manual ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010 Toll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www.ashly.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier Table Of Contents 2 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 AC POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 AC Voltage Requirements. . . . . . . . . . . . . . . . . . . . . . .
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 9 TYPICAL APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1 Stereo Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 Parallel Mono Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 Bridged Mono Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 1. INTRODUCTION The Ashly FTX Series III MOSFET amplifiers combine the sonic excellence of a high-end stereo amp with the ruggedness and stamina necessary in pro audio. The FTX Series III amps use lateral power MOSFETs (metal-oxide-semiconductor, field-effect transistors) for their superior audio fidelity and unmatched reliability as proven in Ashly amps for over fifteen years.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier FTX-1001 FTX-1501 FTX-2001 Idle .5A .6A 1.5A 8Ω loads 2 Amps 2.5 Amps 3.5 Amps 4Ω loads 3 Amps 4 Amps 6 Amps 7 Amps 10 Amps 2Ω loads --- Table 3.1: Recommended AC line current capacity All FTX Series III amplifiers consume less than 12 amps when operating at 1/8 power into 2Ω loads.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier - -27 -24 -21 -18 -1 - -27 -24 -21 -18 -1 Channel One Channel Two Output AC Power Off On FTX-1001 FTX-1501 FTX-2001 6. Idle 210 BTU 250 BTU 620 BTU 6.1 8Ω loads 550 BTU 580 BTU 760 BTU 4Ω loads 800 BTU 970 BTU 1340 BTU 2Ω loads --- 2030 BTU 2590 BTU Table 5.2: Max BTU per hour (both channels driven) 5.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier FTX SERIES III 2 -9 -6 -3 Clip Stereo MOSFET Power Amplifier Protect Protect 2 -9 -6 -3 Clip vel FTX-2001 6.3 Output Meters Output meters display peak output voltage in dB, referenced to full output. For example, if full output in a given configuration was 400 watts, then “0” would mean the amp is delivering the full 400 watts to the load, “-6” would mean the output voltage is 6dB lower, or 100W. 6.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 7. REAR PANEL FEATURES 7.1 Inputs The standard input panel of the FTX Series III amps is equipped with balanced 1/4" tip-ring-sleeve (TRS) phone jacks, balanced XLR jacks, and balanced screwterminal inputs. The three types of connectors are internally wired in parallel and may be used with balanced or unbalanced connections.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier Input Ground The CHASSIS GROUND terminal is internally connected to the chassis, the AC earth ground, and the power amplifier’s signal ground. The INPUT GROUND terminal is tied to the XLR pin 1 and the 1/4" jack sleeve. It is recommended that the input and chassis ground terminals remain connected with the factory-supplied jumper strap.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier Ch.2 Limiter Threshold Limit (dB) +18 +15 +6 +3 0 -3 Stereo Mono Ch.1 Limiter Threshold Limit (dB) Norm Bridge +18 +15 +6 +3 0 -3 -28 -12 -9 -6 CL-2 POWERCARD Input Option Stereo Limiter -28 -12 -9 -6 PUSH PUSH Input Ground 4 5 6 3 2 1 Figure 8.2: CL-2 Peak Limiter Compressor PUSH PUSH (+) (-) (-) 4 5 6 (+) 1 9 10 0 7 8 9 0 Limiter Level In/Out Chassis Ground Channel 2 Output Modes Low Level 10 10 Ch.2 Ch.1 1.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 8. INPUT OPTIONS Input option panels are available to provide built-in features such as a stereo compressor-limiter, a mic and line mixer, a crossover for bi-amplified systems, and input transformers for signal isolation. In addition to the FTX amplifiers, input options can be installed on MFA High-Power amps, the CFT-1800 convection cooled amp, and P70 series 70 volt amps.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 9. TYPICAL APPLICATIONS 9.1 Stereo Operation (Both switches out, both inputs used, both level controls used, both outputs used) 9.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 9.3 Bridged Mono Operation (Normal/bridging switch in, channel 1 input used, channel 1 level control used, BRIDGED output used) 10. DESIGN THEORY Ashly FTX Series III amplifier circuits are totally discrete using high-voltage, wide bandwidth electronics. The input section is a complimentary Darlington differential amplifier stage for high common-mode rejection, low noise and low distortion.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 11. TROUBLESHOOTING TIPS 11.2 11.1 No Audio Output Output level meters indicate 0dB level (red CLIP LED on): Power switch not lit: Distorted Sound Amplifier is being clipped. Reduce the signal level at the signal source. Line fuse is blown or power outlet is dead. 0 dB level on output meters is never reached: IF LINE FUSE IS BLOWN, REPLACE ONLY WITH SAME TYPE AND RATING FUSE.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 13.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier 20KW balanced 13.1 Output Power Maximum Average Power, 0.1% THD, 1KHz RMS Watts Per Channel, Both Channels Driven 13.10 Bandwidth 100KHz 13.11 FTX-1001 FTX-1501 FTX-2001 8 ohms: 4 ohms: 2 ohms: 120W 175W --- 200W 300W 380W 300W 500W 675W 350W --- 13.12 Rise Time 2µS 10%-90% 13.13 Power Requirements 110-125VAC, 50-60Hz (240V Available) Bridged Mono Mode: 8 ohms: 4 ohms: Slew Rate 50V/µS 600W 760W 1000W 1350W 13.
Figure 15.
Figure 15.
Figure 15.
Operating Manual - FTX-1001, FTX-1501, FTX-2001, CFT-1800 Power Amplifier ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 Toll Free (800) 828-6308 Internet: http://www.ashly.com/ 1998 by Ashly Audio Corporation. All rights reserved worldwide.