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3D TV, High Definition Television, HDTV 4K and AV
Hi Fi section
Phono Stage noise on my amp
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<blockquote data-quote="Terryl" data-source="post: 993278" data-attributes="member: 369937"><p>You are probably looking at an impedance mismatch as the new turn table's output may be a bit different the the old one's.</p><p></p><p>Had many problems like this when revamping a stations console with new hardware, in some rare cases the old RCA cables were at fault, replacing them with new or a better grade worked things out.</p><p></p><p>Were is the turn table located? How close to the amp? Is it on a solid surface? In some rare cases the turn table's cartridge (magnetic) was directly picking up vibrations from the amps AC supply transformer, this thru the glass shelf they both were sitting on, better rubber isolation footings were used and funny noise things disappeared.</p><p></p><p>Another case was that the turn table was sitting above the amp, it was directly picking up the AC from the amps power supply, moving it a bit further away helped.</p><p></p><p>You said that this was a new turn table from Rega, have you asked them about what may be going on with this noise?</p><p></p><p>Another possibility is that the magnetic cartridge your using is not shielded and is directly picking up the hum from an outside source.</p><p></p><p>One last thing, does your amp have any type of input switching for different phono cartridge's? some do some don't.</p></blockquote><p></p>
[QUOTE="Terryl, post: 993278, member: 369937"] You are probably looking at an impedance mismatch as the new turn table's output may be a bit different the the old one's. Had many problems like this when revamping a stations console with new hardware, in some rare cases the old RCA cables were at fault, replacing them with new or a better grade worked things out. Were is the turn table located? How close to the amp? Is it on a solid surface? In some rare cases the turn table's cartridge (magnetic) was directly picking up vibrations from the amps AC supply transformer, this thru the glass shelf they both were sitting on, better rubber isolation footings were used and funny noise things disappeared. Another case was that the turn table was sitting above the amp, it was directly picking up the AC from the amps power supply, moving it a bit further away helped. You said that this was a new turn table from Rega, have you asked them about what may be going on with this noise? Another possibility is that the magnetic cartridge your using is not shielded and is directly picking up the hum from an outside source. One last thing, does your amp have any type of input switching for different phono cartridge's? some do some don't. [/QUOTE]
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3D TV, High Definition Television, HDTV 4K and AV
Hi Fi section
Phono Stage noise on my amp
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