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Audio help

John Cone

Well Known and Active Website User
VOC Member
Do we have any audio engineers amongst the membership? The reason for asking is i am trying to marry up an early 70's Garrad turntable to my modern Technis Hi-Fi system. Any help would be appreciated please.
 

CollingsBob

Well Known and Active Website User
VOC Member
Its only an issue of an impedance mismatch..the Technics receiver will be looking for a line level input, and the turntable will be putting out a signal that is a lot lower..be careful - you can't simply amplify the signal - there is an RIAA equalization curve that has to be applied as well..
Why not consider feeding the turntable into your computer?..or better yet - buy a USB turntable for $100.00 from Tiger direct or london drugs and convert your vinyl into Mp3 or .wav files.
 

roy the mechanic

Well Known and Active Website User
VOC Member
Firstly, have you plugged into a PHONO input. consult the manual ( or down load one) It may well not have the facility on-board to acheive your wishes. Or you may have the wrong cartridge type- usually either moving magnet or moving coil ,the magnet has a higher output but inferior quality.
 

ernie

Well Known and Active Website User
VOC Member
Hi John

If the cartridge is a turn-over type, suitable for playing 78s as well as LPs, then it is a ceramic type and the output - in the range 100 - 250 mv - may be too much for your amplifier, and will require a high input impedance in the region of 1 M. A moving coil cartridge of that era has an output in the range 0.5 to 5 mv and can be plugged into phono connectors - left and right stereo. If your hi-fi has no phono sockets, and only AUX sockets, you will need to get a phono pre-amplifier. Not expensive - say £50 - and easy to install. As Bob Collings suggests you can get a reasonably performing record deck from Maplins for £70 which can be played through phono connections or connected to a computer.

Hope that helps

Ernie
 
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