Qsc - 3350 Spec Sheet 电路图.pdf

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1、I Is_. I SERIES THREE AMPLIFIERS FROM QSC 1MODEL 3350 The QSC Series Three Model 3350 is designed for high hensive interface panel is provided to assure proper power audio applications where reference quality audio connection to any professional system. reproduction must be combined with rugged low-

2、profile Features: design. Engineered specifically for recording studiotour- I Low Profile Chassis ing systems and engineered sound, this amp is well suited I 200 Watts Per Channel At 8 Ohms for any high quality professional audio application. I 300 Watts Per Channel At 4 Ohms Because of the high out

3、put power, this amplifier is an I Dual Mono Configuration excellent choice for driving medium sized full range I Front Removable Channel Modules I systems or mid-enclosures on multi-way systems. I Three Year Warranty I The amplifier is passively cooled and uses a high effi- I Precision 31 Step Deten

4、ted Gain Controls I I ciency output circuit to reduce operating temperatures. I Passive Cooling with High Efficiency Output Circuit The dual mono configuration and front removable channel I Comprehensive Interface Panel I module design are important features for those interested I Passive and Active

5、 Accessory Input Modules Iin very high reliability and minimum down time. A compre- I Automatic Back-up in Bridged Mono Mode L I I I / I I !I I I i II 1 I RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS MODEL 3350 OUTPUT POWER (per channel) Continuous Average Output Power Bridged-mono operation both channels

6、 driven 16 ohms, 2020kHz 0.1% THD 400 8 ohms, 2020kHz 0.1% THD 200 1 kHz 1% THD 520 1 kHz 1% THD 260 8 ohms, 2020kHz 0.1% THD 600 4 ohms, 2020kHz 0.1% THD 300 1 kHz 1% THD 840 1 kHz 1% THD 420 4 ohms, 1 kHz 1% THD 900 2 ohms, 1 kHz 1% THD 450 DISTORTION THD - 2020kHz from 250 milliwatts to rated pow

7、er shall be less than 0.1%, 0.015% typical. SMPTE-IMD less than 0.020% 250 milliwatts to rated power FREQUENCY RESPONSE DAMPING FACTOR 2020kHz 0.1dB 8300kHz +0/-3dB Greater than 200 DYNAMIC HEADROOM NOISE 3.0dB 4 ohms -100dB 2020kHz SENSITIVITY INPUT IMPEDANCE CONTROLS 1V RMS for rated power (8 ohms

8、) 20K balanced or unbalanced FrontFlush detented gain control Recessed AC swltch and AC circuit breaker for each channel Rear Mono-bridging and accessory module switches INDICATORS (per channel) _ Bi-color LED indicating DC powerOK/Protect mode LED Clip lndicator -30dB and -6dB signal level indicato

9、rs. Flashing overtemp indicators CONNECTORS (per channel) XLR, (ring, tip, sleeve) and 3 terminal barrier strip inputs wired in parallel 2 terminal barrier strip and 5-way binding post outputs wired in parallel Octal Input sockets provided for input transformers or active accessories Ground lift ter

10、minal block. COOLING AMPLIFIER PROTECTION Passive combined with high efficiency output stage for reduced operating temperatures Unique circuit configuration allows direct metal mounting of output devices for reduced thermal stress from short-term peaks Indefinite short circuit,* open circuit, over-t

11、emp, ultrasonic and rf protection Stable into reactive and mismatched loads Inputs protected from overload All protection completely independent on each channel *Output Averaging Short Circuit Protection (U.S. Pat. 4,321,554) LOAD PROTECTION _ _ Individual channel Load Grounding output relays provid

12、e DC Fault, 3 second delayed turn on (transient protectlon), and excessive low frequency protectlon Instant turn-off, pop suppression and power interrupt protection is also provided OUTPUT ClRCUIT TYPE OUTPUT DEVICES (Total) POWER SUPPLY Full complementary two-level high efficiency. 16 Two completel

13、y separate power supplies including AC switches and AC circuit breakers; only AC cord is common POWER REQUIREMENTS 120, 220, or 240V, 5060Hz, 8A (Each channel) DIMENSIONS Faceplate Depth (behind mtg, with rear support) 19x35 17.9 Depth (chassis) WEIGHT Shipping (Ibs.) Net (lbs.) Speciflcatlons subje

14、ct to change without notice. 15.9” 46 41 ARCHITECTS AND ENGINEERS SPECIFICATIONS The amplifier shall contain all solid-state circuitry, using complementary/silicon transistors and integrated circuits. It shall be capable of operating from 120, 220 or 240V, 50-60Hz AC mains with internally selectable

15、 jumpers. The amplifier shall contain two fully independent channels, with separate AC switches, circuit breakers, power transformers, and protective systems. Each channel shall have independent pro- tective circuitry against open-circuit, short-circuit or mismatched loads; independent thermal warni

16、ng and shutdown circuits, and independent load protection circuits for turn on/off tran- sients including momentary AC dropouts and DC faults within or preceding the amplifier. All pro- tective circuits shall be self-resetting. The remaining channel shall continue to operate, in stereo or bridged-mo

17、no mode, after failure of either channel. Each channel of the amplifier shall be capable of meeting the following performance criteria, with both channels driven simultaneously: Output power into 8 ohms 200 watts, from 20-20kHz, with less than 0.1% distortion. Output power into 4 ohms 300 watts, fro

18、m 20-20kHz, with less than 0.1% distortion. Output power into 2 ohms 450 watts, at 1kHz, with less than 1% distortion. Frequency response shall be 2020kHz with less than 0.1dB deviation. The voltage gain shall be 32dB at full Gain. The power gain shall be 63dB at full Gain. The input sensitivity for

19、 rated 8-ohm power shall be 1V RMS. Balanced bridging input circuitry shall be standard, and the amplifier shall meet all performance criteria in the balanced or unbalanced mode. Input impedance shall be 20k ohms balanced or unbalanced. Noise level shall be at least 100dB below rated power, at full

20、Gain. IHF damping factor shall exceed 200. The amplifier shall be passively cooled, with no fans or moving parts. Each channel shall have the following controls functions, and connectors: 31-step Gain control, with 1dB steps over the highest 14dB of adjustment range, with accuracy within 1dB; Green/

21、Red LED for power/protect indication; Yellow LED signal presence indicators for outputs 6dB and 30dB below rated power; Red LED indicator for any output clipping greater than 0.1%; Flashing red LED indicator for heat sink temperatures within 10C of thermal shutdown. Balanced/Unbalanced input jacks o

22、f the inch ring-tip-sleeve, female XLR, and barrier strip screw terminal type; Speaker connections of the five-way binding post and barrier strip screw terminal type; An octal socket with DC power for passive and active plug-in input accessory modules. 8-way microswitches for octal socket bypass, mo

23、no-bridged mode, cross-connection of chan- nels and XLR input polarity Each channel shall be front-removable with the amplifier mounted in a rack and without dis- connecting the input/output cables. All active components, except AC power transformer, AC switch, circuit breaker, and input/output conn

24、ectors, shall be mounted on the removable channel module. Module connectors shall be flexible to withstand shocks and vibration. The amplifier chassis shall have a permanently attached AC cord, and a ground-lift jumper which permits the separation of circuit and chassis grounds if required. The chassis shall have front and rear 19” rack supports, and shall occupy two rackspaces (3.5”) Chassis depth, including rear supports, shall be 17.9 inches. Weight shall be 42 Ibs. The power amplifier shall be the QSC Audio Products Model 3350. RadioFans.CN 收音机爱 好者资料库