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In Reply to: RE: no need for it posted by John Elison on September 14, 2014 at 19:06:58
all these disks are flat and quiet.
i have tried the mono switch on my preamp vs a mono cart unsummed as well as mono records played /w stereo cartridge unsummed and my preference is to not use that mono switch.
there may be a technical reason underlying this preference but soundwise the mono switch tends to dull the presentation.
Follow Ups:
> There may be a technical reason underlying this preference but soundwise the mono switch tends to dull the presentation.
You probably own a very expensive stereo cartridge in which the manufacturer has purposely asymmetrically damped the cantilever to create interchannel phase shift in an effort to enhance the soundstage. I owned a Dynavector XV-1 that was built that way and every time I activated the mono switch on a mono record, the cymbals and high-frequencies dropped down about 3-dB. It was very annoying and I finally got rid of the cartridge. Harry Weisfeld said he has encountered a lot of expensive cartridges built like that when he conducts Lissajous pattern oscilloscope tests that are supposed to produce a 45-degree line but produce ovals or circles instead. That's one reason I don't have much use for any cartridge that costs more than $1000. All my cartridges perform just fine when I activate the mono switch because they are built correctly and exhibit negligible interchannel phase shift all the way out to 20-kHz.
Best regards,
John Elison
i have a Denon DL-102 and DL-103R. the 102 is a mono cart and is very lively going thru a Jolida JD-9. The 103 now goes thru a Hagerman Bugle. I previously used a Cornet which had a mono switch. Most expensive cartridge i've owned was the Ortofon Black.
So, which cartridge sounds dull with a mono switch? If it's the DL-102, then you definitely have a problem with your phono stage containing the mono switch because there should be no difference in sound one way or the other with that cartridge. A stereo cartridge with significant interchannel phase shift in the upper frequencies will sound dull when using a mono switch because the phase shift causes a reduction in high frequency output when the two channels are blended together. With asymmetrical cantilever damping, phase shift normally begins around 1000-Hz and gradually increases with frequency. This can occur with any stereo cartridge, but I've only measured it on my old Dynavector XV-1. All my other cartridges work just fine.
Best regards,
John Elison
it occured /w my 103 on the Cornet. no matter because i use the 102 now.
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