How are you playing your precious MONO Vinyl?

lalitk OP

thanks for the links

I/we hear what we wanna, read between the lines, but we can only quote what’s there to find

"Stephen Russ, senior technical leader for gas engines at Ford, says this normal knock is usually detected and addressed within one or two combustion cycles and poses no threat to the engine. —ET"

"The Charger’s manual says 87 octane will provide "satisfactory fuel economy and performance." In our testing, "satisfactory" proved to be nearly identical to how the car performed with premium gas. Similar to the BMW, the Dodge’s gains on the dyno (14 horsepower and 23 lb-ft of torque) translated into negligible improvement in our real-world acceleration testing. Saddled with elephantine heft and eager to spin its rear all-season tires at launch, the Charger posted the same 4.9-second hustle to 60 mph on 87 and 93 octane. At triple-digit speeds, the higher power on 93 octane gave the Charger an advantage measured in tenths of a second. The Dodge also posted a 0.3-mpg improvement on premium with its average of 23.5 mpg. Just as important, the bellicose roar of the iron-block Hemi and the Charger’s ability to reduce its rear tires to jungle-gym ground cover are unaffected by the fuel in the tank."

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what they didn’t do is put 87 in the BMW or any vehicle that recommends higher, i.e. go against ’recommendation’. Who would do that? Mine’s nearly new at under 40k miles now.

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"Gasoline with a higher octane rating does not self-ignite easily, and burns more evenly than lower-octane fuel under harsh conditions, resisting detonation and knocking. Modern engines, with electronic sensors and controls, are very good at preventing detonation of lower-octane gas (this is why drivers no longer hear much knocking). But high-octane fuel is still specified when designers want to achieve better acceleration and power output, and when they are willing to accept a slightly bulkier and heavier engine with higher operating costs."

back to the 1st article: the increased power is measurably SLIGHT

"The higher-octane fuel trimmed a single tenth of a second across all of the (BMW) M5’s acceleration times.

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I’m not bragging, I might need engine repairs, just to say, I buy used cartridges, in this way also I am more of a risk taker, you win some, you lose some, I just cannot continue to feel like a sucker.

repeat: high-octane fuel is still specified when designers want to achieve better acceleration and power output

It’s barely measurable, not felt on the street. Get up that hill girl!

I meant to mention that there is a possibility that a mono cartridge will create a ground loop with a stereo phono stage. If the phono stage has a mono switch, than this will resolve any hum issues.

@billstevenson As I mentioned earlier to what Lewm had posted regarding stylus size and groove width. There are actually two mono groove widths prior to the 1960’s. There is the widest mono groove which is what you’ll find with the first vinyl pressings and then later, a Microgroove width. The Microgroove was a narrowing of the original mono groove in order to fit more music per side. I do understand that Lewm is not an expert however, I am still perplexed why these two mono groove sizes are not mentioned more often whenever the topic comes up.

Thanks for this information.  It seems clear that if there is a performance difference for a specific vehicle that boost is coming from the engine management software adjusting the settings such as timing based on the knock sensor readings.  Without the benefit of this information what I have done is listen to the engine.  Not sensing pre-ignition, I dropped from 93 first to 91 and then to 87 octane fuel.  This in the cool months.  In the summer, I use 93 just because it is hot.  

Because it makes very little difference UNLESS you play mono with a 1.0mil stylus, I would guess. In that case there may be a slight issue with playing the micro groove, loss of extreme treble. Maybe not a big deal.

goofyfoot

I thought I was going to have to get a wide groove spherical mono tip. Most if not all of my Mono LPs appear to be made in the 50's, 60's 70's and there is not good info given.

i.e. the Chicago South Side Jazz, Vol. 1 was a collection of music from the late 1920's, early 1930's, but it was produced in 1971. Smooth appearance, looks like a currently produced LP, hard to see the tiny grooves exist.

I play it with my elliptical or microridge.

I imagine playing a modern shibata variant in an old wide groove could cause damage and not be expected to sound good either, maybe even an elliptical would be 'wrong'. ?????