Ashly MOS-FET POWER AMPLIFIERS CFT-SERIES - Manual (Page 7)

SPECIFICATIONS
FTX-1000 FI'X-!50Q FrX-2000
It CFT-iSOO
Output Power
EiA Spec.
(±1dB<1%THD20Hz-20KHz)
Stereo (Rated Per Channe!):
2 Ohms 675 Watts RMS
4 Ohms 190 Watts RMS 300 Watts RMS 500 Watts RMS
8 Ohms !20 Watts RMS 200 Watts RMS 300 Watts RMS
Mono Bridged:
4 Ohms ¡350 Watts RMS
S Ohms 3S0 Watts RMS 600 Watts RMS 1000 Watts RMS
FTC Spec.
{min power <,01 % SMPTE
IMD @ 8, <.02% IMO @ 4)
Stereo {Rated Per Channel):
4 Ohms 160 Waits RMS 275 Watts RMS 400 Watts RMS
8 Ohms Ш0 Watts R.MS 175 Watts RMS 250 Watts RMS
Mono Bridged:
8 Ohms 320 Watts RMS 550 Watts RMS 800 Watts RMS
Total Harmonic Distortion ,007% iKHz .007% IKBz .007% IKHz
(80) -0!%20Hz .0!%20Hz .01%20Hz
1 .05% 20HZ-20K.HZ .05% 20HZ-20KHZ .05% 20HZ-20KFÍZ
ÌM Distortion 80 (SMPTE) .007% .007% .007%
(ÌHF) .01% .01% .01%
Damping Factor >250 20Hz-lKHz >250 20Hz-IKHz >250 20Hz-lKHz
Bandwidth lOOKHz lOOlCHz lOOKHz
Slew Rate 40V/pS 40VyfiS 50V/pS
Frequency Response ±.2dB 20Hz-20KHz ±.2dB 20Hz-20KHz ±.2dB 20Hz-20KHz
Full Power input Sensitivity I.IV 1.3 V 1.7V
Hum and Noise >!00d8 below lull output >100dB bdow fui! outpuí >!05tlB bciow fuíl outpuí
{20Hz-20KHz unweighted)
Power Requirement 760 W Max. iOOW idle 1200 W Max, 160W Idle 1800 W Max, 220W Idle
120 VAC 50-60HZ 120VAC50-60HZ 120VAC 50-60HZ
li (240V available) (240V availabie) (240V availabie)
Size irWx3.5"Hx17,rD í9"Wx3.5'’H.4l7.8’'D !9”Wx5.25”Hxi7.S’’D
Shipping Weight 42 ibs. 4? Ibs. 65 Ibs,
Ashly FTX/CFT Owners Manual PageÎ2
CÜÊ I
5*31 Ssn sT
MOSFET POWER AMPLIFIERS
Models FTX‘1000, FTX-ÎS&O, FTX-2000, and CFTM800
TABLE OF CONTENTS
introduction....................................................... ...................... 1
Standard Connections and Controls................. ......................... 2
Typical Applications..................................................................5
Input Options..................................................................... ....... 7
Transformer Input Option........................................................ 8
Limiter Input Option..................................................................8
Crossover Input Option........................................................ . 9
Mic/Line Mixer Input Option ....:....................................... ......9
Design Theory.................................................................. ........ 10
Dimensional Diagrams ............. ............................................. . 1 i
Specifications...................................................................... ...... 12
INTRODUCTION ... Wtiy MOSFETS?
The Ashly FTX series MOSFET amplifiers combine the sonic excellence of
a high-end stereo amp with the ruggednes.s and stamina necessary in pro audio. The
FTX series amps use power MOSFETs (metal-oxide-semi conductor, field-effect
transistors) for their superior audio fidelity and unmatched reliability as proven in
Ashly amps for over ten years.
The CFT-1800 is a convection cooled hut electrical
equivalent of the FTX-1500,
MOSFET output devices are used in the FTX series amps because of their
superior performance characteristics over bipolar power transistors which are
normally used in conventional power amp designs. The power MOSFET is
inherently more self- regulating and does not exhibit the failure modes that bipolar
transistors are susceptible to. MOSFETS do not require any thermal runaway
compensation circuitry, thus making the design simpler and more reliable. MOS­
FETS do not exhibit secondary breakdown (an instantaneous failure in bipolar
transistors when their collector current exceeds a .safe level, even at voltages much
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Ashh FTX/CFT Owners Manual Page 1