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| Discuss Best way to play 78 rpm records at the Phono/Turntables within the HiFiVision.com - India's Audio Video Hi-Fi Forum; Hello Everyone As a vinyl record collector I collect LP records. Nowadays I have started ... |
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| Phono/Turntables Turntables, Vinyl, or Phono Related Equipment and Accessories |
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#1
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Hello Everyone As a vinyl record collector I collect LP records. Nowadays I have started collecting 78 RPM Records also, though in small numbers. my question is : If Record Players with all the speeds (33, 45 & 78) give us RIAA equilisation what is the best way to play 78 rpm records ? (Because I think we don't need equilisation in 78s record playback) Thanks Hiten |
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#2
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Re: Best way to play 78 rpm records
Actually RIAA has nothing to do with the speed of the record, but the cartridge used.
The older players used Ceramic cartridges which when connected to a high impedance input circuit like a tube preamp or FET input, produced linear frequency response. RIAA equalisation is required on magnetic cartridges which have much lower output voltage and a specific frequency response curve (driven primarily by low frequency demanding more excursion, and at very low frequencies grooves could run into each other). Equalisation was used to invert the curve and produce linear response. Ceramic cartridges sacrifice linearity and quality for simpler implementation, but their inherent disadvantages (bigger counterweights, high record wear) have led them to being superseded by magnetic types. There were a few (very few) ceramic cartridges that expected to see a low impedance, RIAA-equalised preamp, but I don't know if those are still around. I don't know if it helps, but generally the Magnetic types are frequency sensitive, whereas ceramic/crystal are amplitude-sensitive. which is why one needs EQ and the other does not. |
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#3
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Re: Best way to play 78 rpm records
Thanks cranky for the reply
That's what I want to know as 78 rpm records does not require equilisation, record players with all the speeds must be having equilisation circuits in them. So I think they are not best to play 78 rpm records. Kindly tell me if you happen to know low impedance ceramic cartridges player models or company name so as I can look for them in Mumbai (chorbazar) Thanks again Hiten |
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#4
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Re: Best way to play 78 rpm records
Quote:
A quality tone arm and special styli that have been made especially for playing the 78s. Suprisingly ifyou know someone in States or Europe, these things sell for real cheap all over. |
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#5
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Re: Best way to play 78 rpm records
A Low-impedance ceramic cartridge will also require equalisation. The impedance of the input circuit cannot be changed, and so preamp meant for use with ceramic cartridges will not work fine with a ceramic cartridge meant for a magnetic preamp.
I hope that makes sense. Basically the preamp HAS to be matched with the cartridge. What is the player you have? |
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#6
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Re: Best way to play 78 rpm records
Thanks everyone for helping
I am under the impression that Long Play (LP) records format was developed to include more playtime with microgroove technology. Low frequency (bass) loud sound were cut in to disc a little reduced so that it will not take more width of the groove and RIAA equilisation circuits were used to boost these frequencies at playtime. So my point was if a player has all the speeds why should we play 78s with equilisation done on them. I have a very old small Philips (made in India) three speed player with inbuilt amplifier. |
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#7
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Re: Best way to play 78 rpm records
From my understanding, not all records had equalisation built into them. I think pre- 1950 or 1955 acoustic ones did not have it. I could be off by a few years on the dates.
Also it was not only bass that was cut (requiring a boost during playback), but also the treble (roll off) requiring a compensation for preemphasis. Since the RIAA curves were introduced as a standarisation mechanism, all LP pre-amps support it. Bottom line not all records use RIAA curves. |
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#8
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Re: Best way to play 78 rpm records
So my point was if a player has all the speeds why should we play 78s with equilisation done on them. I have a very old small Philips (made in India) three speed player with inbuilt amplifier.[/QUOTE]
Which Philips Player do you have? |
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#9
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Hi
I have absolutely no Idea. Model number is not written on it, not in front, back or anywhere. Here is attached picture of it. By the way a friend told me these models were without equilisation so I am happy to play 78s on them. Thanks everyone for helping regards Last edited by hitensitapara; 8th December 2009 at 04:56 PM. |
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#10
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Re: Best way to play 78 rpm records
Hello Hiten,
what a coincidence this is the exact record player I have. Good to see it still works for you. Is there a way to connect it to a receiver using phono jack.I have lost the speakers only the player remains. thanks, Mahiruha. |
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