frost Posted June 27, 2006 Share Posted June 27, 2006 Hi all, I have found and old 5 channel mixer. On the Phono inputs it has 2 sets of Phono sockets for each one. Under one it says CER and under the other it says MAG. Does anyone know what these mean and what is the difference? Thanks in advance, Toby Link to comment Share on other sites More sharing options...
peternewman Posted June 27, 2006 Share Posted June 27, 2006 Vague stab in the dark from a non soundie. But it's probably ceramic and magnetic for phono cartridges at phono level (as opposed to line level) such as you'd get from a record player. HTH PN Link to comment Share on other sites More sharing options...
london sound Posted June 27, 2006 Share Posted June 27, 2006 CER = CeramicMAG = Magnetic Refers to cartridges for turntables (record players) (old fashoned music source, predates CD's) The impedance and output voltages were very different. Ian Link to comment Share on other sites More sharing options...
frost Posted June 27, 2006 Author Share Posted June 27, 2006 Thanks for the replies. Do you know the voltage that each one was made for? Thanks again Link to comment Share on other sites More sharing options...
Jivemaster Posted June 27, 2006 Share Posted June 27, 2006 Mag - is magnetic pickup typical output 5mV across 47K impedance and a very specific equalisation RIAA curve Cer - is a very high impedance >1Meg and about flat prob suit a 500mV signal CER may be of use for ordinary line sources now. Mag was for better response to the disc groove the stylus could be smaller and lighter but the electronics required the gain and EQ stages, with low noise. CERamic pickups were stiffer so wore the groove out! But the higher output from the crystal ( lead zirconate?) allowed a simple amp. Often built round a triode-O/Ppentode valve so one active component did pre and power(2-5w classA) amp. Think Dansette Link to comment Share on other sites More sharing options...
Lamplighter Posted June 27, 2006 Share Posted June 27, 2006 Do you know the voltage that each one was made for? Ceramic was usually around 50 to 100mV at a high impedance, typically 1 megohm. Magnetic 0.5 to 2mV at a lower impedance depending if it was moving coil or moving magnet. They would both have some form of equalisation to compensate for the type of cartridge and pre-emphasis of the recording. Brian Must type faster! Link to comment Share on other sites More sharing options...
frost Posted June 27, 2006 Author Share Posted June 27, 2006 Thanks for all the replies, that cleared that up. Thanks again :P Link to comment Share on other sites More sharing options...
Lamplighter Posted June 27, 2006 Share Posted June 27, 2006 Think Dansette Do I really have to? Brian Link to comment Share on other sites More sharing options...
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