User manual GAMUT M250 2004

[. . . ] GamuT GamuT International A/S, Oesterled 28, Bygning A, DK-4300 Holbaek, Denmark Telephone no: int + 45 70 20 22 68 Telefax no: int + 45 59 43 97 26 www. gamutaudio. com Users Guide GamuT M250 Mono Power Amplifier GamuT International A/S, Oesterled 28, Bygning A, DK-4300 Holbaek, Denmark Telephone no: int + 45 70 20 22 68 Telefax no: int + 45 59 43 97 26 www. gamutaudio. com Users Guide GamuT M250 Mono Power Amplifier SAFETY INSTRUCTIONS: - Never let children (or grownups) push anything into holes or slots in the case - this could result in an electric shock and could cause damage of the set. - Never guess or take chances with electrical equipment of any kind - it is better to be safe than sorry. Warning: To prevent fire or shock hazard do not expose this appliance to rain or moisture Warning: No user serviceable parts inside. DO read the user's guide before you attempt to use this equipment. [. . . ] Do not connect headphones to this amplifier without using protecting resistors. Make sure, that you do not let any tiny part of the speaker cable going to a terminal touch the other terminals. Only connect this amplifier to loudspeakers, and only one loudspeaker on each channel. Do not connect the output of this amplifier to another amplifiers outputs or inputs. Loudspeaker impedance Most loudspeaker are 8 or 4 Ohm, and they are specified so by the manufacturer. Unfortunately, some loudspeakers have an impedance, which is much lower than specified. They will not damage the GamuT power amplifier, because it will simply mute. It handles 500W, and a peak current of 400 Ampere and 100 Ampere long-term. Somewhere, we have to draw a line between what is a loudspeaker load, and what is a short circuit. We have set this line at 1. 5 Ohm, which will draw about 47 Ampere peak. The impedance of a few electrostatic loudspeakers does go down below 1. 5 Ohm at high frequencies. However, it works well with Quad ELS63 and most Martin Logan electrostatic loudspeakers. Please also note that a Quad ELS-63 electrostatic loudspeaker cannot handle more than 55V peak, and the GamuT M200 MkIII can give more than 70V peak. A lifetime of enjoyment So far, our oldest amplifiers from 1982 still work in professional recording studios, often doing their job 16 or 24 hours a day. A more likely cause for change would be your wish to upgrade in some years time. Here our modular approach serves to keep the upgrade cost low, and you avoid selling with a loss on the second hand market. The cabinet should last a lifetime, and the GamuT Logo is engraved down into the surface; wearing the text out will be quite difficult. Apart from being good economy, this long term approach is also better for the environment. Most parts of the cabinet are made of aluminium, which is easy to recycle. Your grandchildren will be pleased with your choice. 5 Normal use When you switch on, the blue light in the front will light up to confirm you have mains power on. One second later two small clicks can be heard from inside the amplifier, they confirm, that the amplifier has connected the loudspeakers using the output relay. These clicks are your confirmation that the protection system have found everything to be OK. [. . . ] Natural detail indeed; you hear the piano sound as felt hammers hitting metal strings, and also the unique series of resonances from strings, metal frame and wood. A fine Steinway or a Bösendorfer grand piano costs about EURO 100, 000. Is it reasonable to expect a stereo system costing much less to reproduce it perfectly?Deutsche Grammophone 427 772-2, "Horowitz at home" The poor studio technician had to come to the master's home this time and make this recording. [. . . ]