VADLYD MD12
MK4
78 RPM and RIAA Record Preamplifier
Jørgen Vad Lydteknik - Farum Gydevej 65 - DK 3520 Farum - Denmark - Phone: +45 45806425
Страница 1: ...VADLYD MD12 MK4 78 RPM and RIAA Record Preamplifier Jørgen Vad Lydteknik Farum Gydevej 65 DK 3520 Farum Denmark Phone 45 45806425 ...
Страница 2: ...ZATION OF PHONOGRAPH RECORDS 5 STYLUS SELECTION 7 SPEED SELECTION 8 HOW TO USE THE PREAMPLIFIER Front Panel 8 Rear Panel 9 SETTING THE CORRECT EQUALIZATION USING THE PRESETS 10 REPRODUCTION OF PATHÉ AND EDISON RECORDS 11 FURTHER REFERENCES 11 SPECIFICATIONS 12 LIMITED WARRANTY 12 1999 2014 Jørgen Vad Lydteknik All rights reserved ...
Страница 3: ... og stoffer der kan være farlige og skadelige for menneskers sundhed og for miljøet når affaldet af elektrisk og elektronisk udstyr WEEE ikke bortskaffes korrekt Produkter der er mærket med nedenstående overkrydsede skraldespand er elektrisk og elektronisk udstyr Den krydsede skraldespand symboliserer at affald af elektrisk og elek tronisk udstyr ikke må bortskaffes sammen med usorteret husholdnin...
Страница 4: ...f outputs is balanced with XLR connectors with a second set providing unbalanced output on RCA phono jacks This allows for both professional and consumer use The third set of outputs is also balanced with XLR connectors but it contains a flat output signal This signal is not affected by the eq settings and is useful for making simultaneous archival transfers per Paragraph 5 2 6 7 of IASA TC04 Guid...
Страница 5: ...et within a coil When the signal is applied to the coil the stylus moves and engraves a groove in the blank disk There is of course a lot more to it than that but we are considering only the basics here However because the cutter head s movements translate the amplitude swings of the original signal into velocity the rate at which the stylus moves during its swings low frequency signals would be r...
Страница 6: ...ncreased amount of treble which can be cut onto an LP Therefore playing a 78rpm record using RIAA equalization all that is available to many people produces far less top end response than is correct particularly for the earliest electrical records where the result is akin to turning the treble control down Turning the treble up gives an improvement but it doesn t touch the important mid range Use ...
Страница 7: ...contact point giving a wider area of contact which reduces wear however it can also increase noise from worn or damaged groove walls and I would be dubious about its use for 78s However older 78s were cut to be used with steel needles on the assumption that the needle would wear down to fit the groove in the first few seconds when this wider groove is tracked with a 2 5 thou stylus the result is b...
Страница 8: ...two pushbuttons select either MM moving magnet or MC moving coil cartridges for each input An LED lights when MC is engaged in which case load impedances of 50 100 or 200 Ohms can be selected using the appropriate toggle switch above each pushbutton Equalization curves are selected with the rotary switch and the currently active curve is indicated by the appropriate LED Always change equalization ...
Страница 9: ...seful for making simultaneous archival transfers per Paragraph 5 2 6 7 of IASA TC04 Guidelines on the Production and Preservation of Digital Audio Objects The preamp is equipped with two identical inputs which makes it possible to have two turntables con nected at the same time As an example one turntable might be for LP EPs and another turntable for 78s Use only the cables intended for use with y...
Страница 10: ... with re cords in bad condition which as a result of wear have often lost much their high frequency response Unfor tunately many 78s are in bad condition because they have been played many times Ideally use FLAT for old acoustic recordings Sometimes you will find that you will get a better sound with a little bass lift Then try one of the other eq settings and use the 80 Hz bass cut filter Next eq...
Страница 11: ...wall But some of the first recordings were vertically cut also named as hill and dale recordings Because of that a mono cartridge is not able to reproduce a vertical groove signal But a stereo record is a combination of a lateral cut and a vertical cut record That s why you can use a stereo cartridge You will get the best result with a special costum made stylus for this purpose Ask your Cartridge...
Страница 12: ...ground pin 2 hot pin 3 cold Limited Warranty VADLYD MD12 MK4 is warranted for two years from date of purchase to be free of defects in materials and workmanship In event of such defect VADLYD MD12 MK4 will be repaired promptly without charge This warranty excludes defects due to normal wear abuse shipping damage or failure to use product in accordance with instructions This warranty is void in the...
