Ampeg_SVT-450H_Users_Guide电路图.pdf

Users Guide for the SVT450H Bass Amplifier Made in the U.S.A. by RadioFans.CN 收音机爱 好者资料库 TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . .6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Technical Specifications . . . . . . . . . . . . . . . . . . .back cover SVT450H Bass Amplifier Declaration of Conformity Manufacturers Name:SLM Electronics Corporate Headquarters:1901 Congressional Drive, St. Louis, Missouri 63146 Primary Production Facility:700 Hwy 202 W, Yellville, Arkansas, 72687 Product Type:Audio Amplifier Products meet the regulations for compliance marking under: ETL standards UL6500, UL60065, or UL813 CSA standards E60065 or C22.2 No.1-M90 CE safety standard EN60065 CE EMC standards EN55103 or EN55013 and EN61000 FCC standards 47CFR 15.107 and 15.109 Class A C-tick designation Level 2, ABN #56748810738, ARBN# N222 KETI standard K60065 (limited model approval) Compliance Support Contact: SLM Electronics, Attn: R sliding the control downward decreases it. 12. ON: This LED illuminates when the amplifier is on. 13.POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom of the switch depressed). SVT450H Bass Amplifier 5 The Rear Panel 14192021 22242315161718 14. (FAN): The temperature controlled, variable speed fan draws cool air into the amplifier and forces heat out through the exhaust vents (also on the rear panel, between the speaker jacks and the power amp in jack). Do not obstruct the fan or vent hole openings. 15. (FUSE): The fuse helps protect the unit from damage due to overload conditions. If the fuse fails, replace it only with the same size and type. If the fuse fails repeatedly, check the line voltage or contact an Ampeg Service Center. 16. AC LINE IN: Firmly insert the supplied AC power cord into this socket until it is fully seated. This grounded power cord is to be plugged into a grounded power outlet, wired to current elec- tric codes and compatible with voltage, power, and frequency requirements stated on the rear panel. Do no attempt to defeat the safety ground connection. 17. SPEAKERS: The 1/4” jacks offer a con- venient method of connecting to speaker cabi- nets using cables terminated with 1/4” plugs. However, when using the amplifier at or near its full output power, using the Speakonjack is recommended. (Pin 1+ = hot, pin 1- = return.) NOTE: When connecting multiple speaker cabinets to the amplifier, keep the overall impedance at or above 4 ohms. The following chart shows the total impedance load when connecting speaker cabinets in parallel: cabinet# of# of impedancecabsimpedance 8 ohms24 ohms 16 ohms28 ohms 16 ohms44 ohms 18. POWER AMP IN: This mono jack allows you to feed the preamp output of another ampli- fier to the input of the SVT450Hs internal power amp. This bypasses the preamp circuitry of the SVT450H. 19. PREAMP OUT: A post-EQ signal from this jack may be sent to the house mixing board, recording console, or an external amplifier. 20. EFFECTS RETURN: Use this jack to con- nect the output signal from an external effect to the amplifier by means of a shielded signal cable. 21. EFFECTS SEND: Use this jack to send a signal to the input of an external effect by means of a shielded signal cable. 22. -20dB/0dB: This switch, when depressed, attenuates the signal at the Bal. Out jack (#24) by 20dB. 23. POST/PRE: This switch, when depressed, sends a post-EQ signal to the Bal. Out jack (#24). When this switch in the out position, the signal at the Bal. Out jack (#24) is pre-EQ. 24. BAL. OUT: This XLR connector provides a balanced preamp output signal for connecting to the house mixing board, a recording console, or an external amplifier with balanced inputs. The signal at this jack can be set to be pre or post EQ by means of the Post/Pre switch (#23). The level of the signal can be adjusted for mic or line type inputs by means of the -20dB/0dB switch (#22). SVT450H Bass Amplifier 6 Some Suggested Settings ROCK: JAZZ: COUNTRY: FUNK “POPPING:” The setting of the Gain control depends on your particular instrument. The Master should be set to produce the appropriate output volume level. The Graphic EQ can be used to tailor the amplifier to your speaker cabinets, to compensate for room acoustics and to “fine tune” your sound. SVT450H Bass Amplifier 7 Troubleshooting In the unlikely event that your SVT450H should stop working properly (or just stop working), take a few minutes to troubleshoot it before you call for service. You can save yourself time and money by doing it yourself, and often the prob- lem is something quite simple. If the problem isnt covered above, or if the steps lead you here, then contact your Ampeg dealer for service informa- tion. Also, you should refer your amp to an authorized service center if it gets dropped, has liquid spilled into it, or sustains damage to its power cord. Regular cleaning and maintenance by your local Service Center will help extend the useful life of the amplifier. System Block Diagram INPUT PAD POST PRE -20dB PAD LIMIT ON COOLING FAN POWER AMP PROTECTION RELAY Thermal Shutdown, Low Voltage, DC Protect EFFECTS SEND BALANCED LINE OUT GAIN BASS MASTER VOLUME ULTRA MID TREBLE PEAK LED 9 BAND GRAPHIC EQ EFFECTS RETURN PREAMP OUT EQ IN SPEAKER OUT POWER AMP IN SPEAKER OUT SPEAKON JACK 1+ 2+ 1-2- LIMIT LED SVT450H Bass Amplifier P/N 47-612-11 .032905 Ampeg reserves the right to change specifications without notice. Made with Pride in the U.S.A. by Ampeg 2005 Ampeg, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A. Technical Specifications OUTPUT POWER RATING450 Watts RMS, 4 ohm load, 120VAC 250 Watts RMS, 8 ohm load, 120VAC TONE CONTROL RANGE Bass:+13dB / -15dB 40Hz Ultra Mid:+5dB / -13dB 400Hz Treble:+16dB / -21dB 8kHz GRAPHIC EQ RANGE 40Hz:12dB 80Hz:9dB 150Hz:8dB 300Hz:8dB 550Hz:8dB 1kHz:9dB 2.2kHz:8dB 4.5kHz:10dB 8kHz:13dB GAIN62dB typical, tones center SIGNAL TO NOISE RATIO75dB typical LINE POWER REQUIREMENTS260VA SIZE AND WEIGHT24” W x 11-1/2” H x 13” D; 47 lbs SVT450H Bass Amplifier