Question about Sony STR-DB930 Receiver

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Phono stage Hi not a prob really just would like to know is the phono stage a moving magnet or moving coil no details at all in the insruction book thank you very much

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Hi. The phono input of your STRBD930 has a pre amplifier on it, and as such should only be connected to a dynamic phono cartridge. This is one which has a moving coil or magnet, as opposed to a piezzo cartridge. Connecting a piezzo turn table to the phono input will provide a too-higher voltage input for the pre amp, which might damage the pre amp. I hope this helps. PS moving magnet and moving coil are same difference. These are both dynamic cartridges, and can be connected to STRDB930.

Posted on Sep 13, 2008

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Does Kenwood VR-616 have phono input?


Yes over AUX-ilary with an riaa-preamplifier inbetween if moving magnet or moving coil if a phono is used ceramic / crystal phono element is used it can used without any pre amp
http://manual.kenwood.com/files/B60-5228-00.pdf

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HOW DO YOU USE A TURNTABLE ON A R3000 KLH


Please refer to user guide specs about your Turntable for the Output type That is MM or MC (Moving Magnet or Moving Coil) then on the receiver look for PHONO input and interconnect

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Using turntable (audio technica at-lp 120) with built in pre amp the sound is distorted and broken up. the turntable requests phono turned on to use. Does the receiver have a pre amp or boost signal...


A turn table produces sound voltage in the millivolt range. If you have it connected to a receiver that has a phono input and the turn table is pre-amplified, you are overdriving the receiver and it is clipping the audio and making it sound bad.

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How can i use a pioneer PL-Z93 turntable with a pioneer A-717 amp?


Hi, there is no reason for the turntable not to work with your amp. This amp has 2 phono inputs. Moving magnet and moving coil. Your tt likely has a moving magnet cartridge fitted so connect via that input. Cheers John. styluscity.com

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Hi I have a Technics SCEH790 CD Shelf System, plus a pre amp phono stage for my turntable, I have had this working in the past as it was a friend who whirerd it all together, I have moved my hi fi to a...


PHONO PREamp. Does that suggest anything?

No picture necessary. YOU can see it. I can visualize.

Turntable to the Pre-amp IN. Preamp OUT to ANY available RCA input (usually AUX,).

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1 Answer

WEAK SOUND WHEN CONNECTED TO DURABRAND AMP


The electrical output from a turntable actually comes from the cartridge on the tone arm. Specifically, it's generated by an interaction between a magnet and a coil inside the cartridge. They come in two types, MC ("moving coil") and MM ("moving magnet") according to which of the two elements moves and which is fixed. MM cartridges produce more current but MC cartridges usually sound better. No matter which you have though, the total output is too low for the regular line inputs on amplifiers. Ten or twenty years ago, amps has special "phono" inputs. This would have a special pre-amplifier in it that would amplify the cartridge's singal to a level suitable for the rest of the amp. Most amps having a phono input only deal with MM cartridges, which have a higher signal.

I use an MC cartridge with an amp that doesn't have a phono input at all; therefore I needed to buy a special external phono pre-amp. I bought a Musical Fidelity X-LPS. But cheaper pre-amps do exist.

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1 Answer

Pioneer a858 amp no sound from phono stage, I bought it from ebay and dont know whether someones connected a line level component to it such as a cd player. and if they had would it kill the phono stage...


Hi Big John

This is a nice reference series amp with a decent phono preamp stage. It is unusual to see a phono stage get damaged in this way.... but Murphy's law tells us "If it can be blown up, then someone will do it". I recommend that you do fix it. First up, perhaps check the settings for the preamp on the rear of the amp(from recollection). Be sure that you have it in moving magnet (mm) mode if you are using a MM cartridge.

Although its been a few years, My recollection is that there is a separate power supply for the phono preamp, with maybe even power regulators on on the actual preamp board. First check would be here to see if both DC rails are present for the phono Preamp stages. Most common failure here is heat stressed cracked/dry solder joints.

You need a good HiFi/Audio tech to have a look at it for you if the problems run deeper than DC supply for the preamp. Good luck. A FixYa rating is a great reward for my time to address your problem. Cheers

regards
robotek

Nov 06, 2008 | Pioneer Audio Players & Recorders

1 Answer

Phono input


If you mean Moving Magnet vs Moving Coil, they are different.

MM is the higher output of the two types so most Phono Preamps can deal with them.

Not knowing the specific receiver model, a direct answer to your second query is not possible. I would guess - YES.

"Since the coils are much smaller than those in the MM cartridge, the MC cartridge generates a much smaller signal."

see this great article where that originates...

http://forum.ecoustics.com/bbs/messages/1/165349.html

Dec 17, 2007 | JVC RX-318 Receiver

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