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Tarbuster
climber
right here, right now
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Apr 13, 2018 - 04:32pm PT
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What does reel to reel tape say about character development in film? ;) Ha ha. Just watched Pulp Fiction again last month. Favorite scene is Travolta and Uma Thurman having a conversation in the convertible "car" in the restaurant.
Reel to real says vinyl spelled sideways, with a heavy dose of retro-cool drug dealer chic.
Way higher fidelity than cassette tapes. And different recording speeds enabled more or less data per inch, depending on the desired quality outcome.
You could get a lot of music on one reel, enough to last for most of a party.
Those big-ass reels sure do look sweet, especially when the unit is running and they are rotating like ferris wheels!
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Thanks Jan: cassette means/meant Nakamichi or go home.
My first quality source input was from a Teac cassette player.
Teakwood shell, horizontal, top loading configuration, brushed aluminum faceplate, sliders for volume adjustment instead of knobs, analog VU meters ... ye-aaaah baby!
(Turntable was junk conscripted from the parents: taped a penny to the head shell to effect proper tracking force)
Made a lot of YES and ELP tapes for backpacking trips on this rig, or one just like it:
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phylp
Trad climber
Upland, CA
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LOL Tarbuster, that is so funny!
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'Pass the Pitons' Pete
Big Wall climber
like Ontario, Canada, eh?
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Where's Minnesota Mawk? His company Magnepan out of White Bear Lake makes the kickin'est ass audiophile speakers!
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Ksolem
Trad climber
Monrovia, California
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The last set of Magneplanars I heard was four years ago in a tuned listening room environment. I couldn't wrap my brain around the low end. I notice on their website that the new one's have optional add on panels for bass, and an adjustment on the speaker for low freq. response. So it seems to me they are still wrestling with the same problem. There's a set of the new one's on display down the street. I'll go down and check 'em out.
The last thing I want in a speaker is an adjustable cross-over. That is a circuit which has to be carefully optimized for the drivers in question.
The idea of an all ribbon speaker is cool, but realistically reproducing bass is about moving air. A large number of very small transducers doesn't cut it for me. YMMV.
These baby's move air...
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Tarbuster
climber
right here, right now
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Adjustable crossover?
I can only achieve that with a dutiful application of beer, weed, & certain brands of tequila.
Otherwise: that's gotta be pure folly!
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Ksolem
Trad climber
Monrovia, California
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“High Definition Vinyl” Is Happening, Possibly as Early as Next Year. With a new $4.8 million investment, an Austrian startup says it could have “HD vinyl” in stores by 2019
From their pitch...
Lasers are then used to inscribe the map onto the “stamper,” the part that stamps the grooves into the vinyl. According to Loibl, these methods allow for records to be made more precisely and with less loss of audio information. The results, he said, are vinyl LPs that can have up to 30 percent more playing time, 30 percent more amplitude, and overall more faithful sound reproduction
This should be interesting. I'll keep an open mind and wait to see what they can come up with. But, I've been involved in enough vinyl mastering to understand that amplitude and playing time are mutually exclusive. Higher amplitude requires more real estate on the disc, which unavoidably means less playing time. I'm looking forward to seeing how they get around that.
It's probably just a screw up in the article, but when the laser inscribes the "map" it cannot be making a stamper. This first part has grooves like the finished record and cannot be used to stamp anything. It's called a "mother." A "father" is then made from the "mother" through a plating process. The "father" has the positive representation of the grooves and thus can be used as a stamper. Of course the two metals, one the mother and the second the father must be different so they can be separated after plating. Usually the mother is copper, the father nickel. Sometimes the other way 'round.
On top of that, they say that their format is compatible with today's turntables. But most cartridges get pretty maxed out by the amplitudes which are cut on club music discs. Increasing the amplitude as they claim they can will probably bounce the needle right out of the groove.
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hooblie
climber
from out where the anecdotes roam
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^^^ that's when you tape a dime to the top of the cartridge ;)
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Urmas
Social climber
Sierra Eastside
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Does anyone have a suggestion for setting/adjusting the pitch on my 70's vintage Dual turntable? I used to have a cardboard disc with black spots around the perimeter, that appeared motionless under flourescent light when the pitch was correct. Are these still available, or is there another way to accomplish this?
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NutAgain!
Trad climber
South Pasadena, CA
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Urmas, that motionless dot solution is a cool idea- fancy tuners for guitar use that strobe effect too. Is there a switch to select between countries with 50hz vs 60hz ac frequency (the flicker rate of the fluorescent lights), or is it fixed for use in USA (60Hz)?
It would be a reasonable math exercise (i.e. only using high school/freshman level math) to calculate the dot spacing to create your own pitch adjuster. Print it out and glue it to a piece of cardboard.
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ionlyski
Trad climber
Polebridge, Montana
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Kris,
The main problem with a large driver, full range monitor like those (twin 15's?) in wide stereo, is "power alley". There is no physical way that method will give even, low frequency coverage from left to right, within the room.
Modern systems are increasingly reducing the size of low frequency drivers in the main left/right cabinets and either utilizing a singe point driver for everything 80hz and lower, OR if multiple low frequency drivers are needed, then spreading them across the front and "steering" the low frequency array by using incremental electronic delay, where the center is at time zero and small delay units towards the outside of the array.
That way, no center position low freq bump and no alleys with cancelled low freq.
Arne
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Matt Sarad
climber
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Over the years I have had McIntosh tube preamp and power amp, old JBLs, L 100s, AR, custom made designed on Rogers LS3/5a with KEF drivers, Hafler, Audionics, SAE...
A dozen years ago I bought Cambridge Audio integrated amp, Music Hall 5.1 turntable with Goldring, and Wharfdale Diamond 9s.
Then I crashed a mt bike and lost 60% hearing in my left ear. Sound comes to my right ear unless I crank it way up and move around to the balanced spot. My wife can’t take the volume.
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G_Gnome
Trad climber
Cali
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Roy, I spent some time talking to Bonnie on Saturday night and she admitted that Bob was tone deaf and she didn't hear music very well either so the Infinities were lost on them. However, their cassette was a Nakamichi. You would expect no less from Bob.
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Ksolem
Trad climber
Monrovia, California
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Early in my career I ran a place that made high quality fast turnaround cassette copies for record company promotion departments. We had 200 Nakamichi MR-1's.
Does anyone have a suggestion for setting/adjusting the pitch on my 70's vintage Dual turntable?
Anyone interested in vinyl needs to know about this outfit:
https://www.lpgear.com/product/AT6180.html
The main problem with a large driver, full range monitor like those (twin 15's?) in wide stereo, is "power alley". There is no physical way that method will give even, low frequency coverage from left to right, within the room.
That room was designed around the speakers and tuned four times a year using a TEF analyzer at many locations in the room. It was remarkably flat throughout so long as you didn't stand against a wall. But it was built expressly for mastering work. The kind of systems you describe are not well suited for that work since they sound good by nature. Add a dB at 6K, sounds good. Do the opposite? Still sounds good. Those Tannoys in my studio had a much narrower window for what sounds right, and that "sweet spot" was tweaked so my work would translate well to a large variety of consumer stereos.
To be honest, in 25 years in pro audio I never heard the term power alley, but then I was more of a user than a designer. And help me out with this business of steering a low frequency array. The only knowledge I have about steering speaker arrays using phase delays is in large outdoor concert applications.
Of course, my system at home, which is located in the opposite of a tuned environment uses 6" lo freq outside drivers with a single point sub.
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Tarbuster
climber
right here, right now
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Question:
I recently replaced the belt on my, uh, belt drive turntable. As far as I know, that's the only way to "adjust" or restore pitch on a belt drive unit.
Prior to replacement, I had no problem ascertaining that the speed was slowing. It's when I went from listening to identical albums, one on CD and the other on vinyl, Miles Davis' Miles Ahead, that I finally did something about it. Just for fun, I timed the length of a particular cut, before and after replacing the belt. This was the first cut off of Bruce Springsteen's Nebraska: I went from a play time of 6:24 to 5:57!
I also measured the belt: before, it was 9 3/16 inches when doubled, and after it was 8 7/8 inches ...
But how do you know the motor itself is turning at the proper speed?
A quick search yielded this, which was interesting in its discussion of 78 RPM records being produced at variable speeds, but other than that, it didn't really address the question I'm asking here:
https://www.vinylengine.com/turntable_forum/viewtopic.php?f=18&t=27794
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Urmas
Social climber
Sierra Eastside
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Thanks KSolem! My turntable has a pitch adjustment knob. I'm getting ready to unpack my 500 or so vinyl albums and start listening to them for the first time in about 15 years. All I need is a new cartridge and I'm set.
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Jon Beck
Trad climber
Oceanside
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Tarbuster, the length of the belt does not affect speed unless it has stretched to the point that it is slipping on the motor spindle. Sounds like yours was slipping if the song got shorter. Using one of the printable templates on VinylEngine will allow you to check the speed with fluorescent light, the template goes on the platten, paying attention to the distance the bars are from the center spindle.
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Barbarian
climber
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^^^ that's when you tape a dime to the top of the cartridge ;)
and flop down on your beanbag chair to enjoy the sounds...
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Tarbuster
climber
right here, right now
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Okay, Jon, thanks, but what about electric motor speed?
Will that degrade over time?
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