User manual ELECTRO-VOICE 1828C

[. . . ] EV's unwavering commitment to become the PRECISION SERIES COMPACT AMPLIFIERS HI-EFFICIENCY IN A LIGHT & COMPACT FORMAT EV's Precision SeriesTM Linear Amplifiers - including the legendary flagship P3000 - established EV amplifiers' reputation for outstanding audio performance and reliability in demanding audio applications throughout the 1990s. The Precision SeriesTM Compact Amplifier line now offers the same performance and reliability level in a new compact, lightweight format. This is made possible by incorporating a highly efficient Class-H design, which results in substantially less heat generation. [. . . ] This is made possible by incorporating a highly efficient Class-H design, which results in substantially less heat generation. This allows a substantial reduction in the overall size of the amplifier without sacrificing performance or reliability. HOW IT WORKS - INNOVATIVE ENGINEERING Class-H design is the ability to make the voltage switching totally transparent to the user. This is where EV's amplifier engineering excellence makes the difference over other so-called "Class-H" designs. Ultimately, EV Precision SeriesTM Compact Amplifiers set the new standard in Class-H design, whilst meeting the high expectations EV set for the original Precision SeriesTM models. Take a listen: The audio performance speaks for itself. Rather than supplying the voltage for the maximum output power permanently, in EV's Class H design the permanent voltage rail is designed to cover the average music signal. If dynamic peaks require a higher output voltage, the voltage rail is switched to the maximum. This process saves nearly 50% of the power consumption found in conventional amplifier design and results in a dramatic reduction in heat output. 1 kHz INPUT SENSITIVITY Rated power @ 8 , 1 kHz +7. 0 dBu (1. 74 Vrms) +5. 8 dBu (1. 51 Vrms) +4. 7 dBu (1. 33 Vrms) < 0. 05 % < 0. 02 % +3. 2 dBu (1. 12 Vrms) +1. 15 dBu (0. 88 Vrms) THD @ rated output power IDE- SMTP 60 Hz, 7kHz DIM30 3. 15 kHz, 15 kHz MAXIMUM INPUT LEVEL CROSSTALK ref. 1 kHz, rated output power FREQUENCY RESPONSE ref. 1 kHz INPUT IMPEDANCE active balanced DAMPING FACTOR 1 kHz SLEW RATE SIGNAL TO NOISE RATIO (A-weighted) POWER REQUIREMENT POWER CONSUMTION PROTECTION COOLING DIMENSIONS (W x H x D) WEIGHT OPTIONAL ACCESSORY Note: all measurements both channels driven into 8 Ohms unless otherwise specified. < 0. 05 % < 0. 05 % < 0. 01 % +22 dBu (9. 76 Vrms) < -80 dB 15 Hz . . . 40 kHz (±1dB) 20 k > 300 < 0. 01 % < 0. 01 % 38 V/µs 108 dB 35 V/µs 107 dB 35 V/µs 107 dB 30 V/µs 105. 5 dB 25 V/µs 103. 5 dB 240V, 230V, 220V, 120V or 100V ; 50 . . . 60 Hz (factory configured) 1070 W 820 W 660 W 500 W 600 W Audio Limiters, High Temperature, DC, HF, Back-EMF, Peak current Limiters, Inrush Current Limiters, Turn-On delay Front to Rear, 3-stage Fans 483mm x 88. 1mm x 368. 8mm 8. 70 kg 8. 15 kg 16 kg 15 kg 13. 5kg Rear-rackmount 15, 5": 112930 (RMS15-CL), Rear-rackmount 18": 112933 (RMS18-CL) Americas Headquarter Americas Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA USA--Phone: 1-800-392-3497, Fax: 1-800-955-6831 Canada--Phone: 1-866-505-5551, Fax: 1-866-336-8467 Latin America--Phone: 1-952-887-5532, Fax: 1-952-736-4212 Europe, Africa & Middle-East Headquarter Europe, Africa & Middle -East EVI Audio GmbH, Hirschberger Ring 45, D-94315 Straubing, Germany Phone: +49 9421 706-0, Fax: +49 9421 706-265 France: EVI Audio France S. A. , Parc de Courcerin, Allée Lech Walesa, F 77185 Lognes, France Phone: +33 1-6480-0090 Fax: +33 1-6006-5103 UK: Shuttlesound, 4 The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK Phone: +44 208 646 7114 Fax: +44 208 254 5666 Japan: EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055 Phone: +81 3-5316-5020, Fax: +81 3-5316-5031 Hong Kong: Telex EVI Audio (HK) Ltd. [. . . ] 12000 Portland Ave South, Burnsville, MN 55337, USA USA--Phone: 1-800-392-3497, Fax: 1-800-955-6831 Canada--Phone: 1-866-505-5551, Fax: 1-866-336-8467 Latin America--Phone: 1-952-887-5532, Fax: 1-952-736-4212 Europe, Africa & Middle-East Headquarter Europe, Africa & Middle -East EVI Audio GmbH, Hirschberger Ring 45, D-94315 Straubing, Germany Phone: +49 9421 706-0, Fax: +49 9421 706-265 France: EVI Audio France S. A. , Parc de Courcerin, Allée Lech Walesa, F 77185 Lognes, France Phone: +33 1-6480-0090 Fax: +33 1-6006-5103 UK: Shuttlesound, 4 The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK Phone: +44 208 646 7114 Fax: +44 208 254 5666 Japan: EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055 Phone: +81 3-5316-5020, Fax: +81 3-5316-5031 Hong Kong: Telex EVI Audio (HK) Ltd. Unit 5, 1/F, Topsail Plaza, 11 On Shum Street Shek Mun, Shatin HK Phone: +852 2351-3628, Fax: +852 2351-3329 China: Telex EVI Audio (Shanghai) Ltd. [. . . ]