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#1
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wow/flutter test on a Pioneer HR-99
yesterday I was at at my friend's repair shop working on my HR-99, and
decided to test the deck on his wow/flutter meter- this meter puts out a continuous 3000 HZ tone- so we pulled a blank tape off the workbench shelf, and taped a 3000 HZ tone from the generator onto track one, then played it back into the wow/flutter meter and checked it an old unserviced Scotch brand 90 min blank, with shot pads, in need of servicing- dry reel and pinchroller posts- it registered .35% wow/flutter, or 1/3 or a percent I'm surprised it wasn't a lot worse than that ! I'm going to return with a serviced tape w/3000 HZ tone and see what kind of improvements can be made- not expecting much, since all the Pioneer decks have the small DC motors- and will show more wow/flutter than an AC motored deck like a Telex, Akai, JVC while there, I ran my Audiotex alignment tape through the -99 and into the frequency counter on the bench, and monitored the tape through the bench speakers- and kept adjusting the motor speed until the counter reading matched what the test tape tone was brought the deck home, and it was dead nuts on with my 90 second speed test tape- verifying that both test tapes (the Audiotex and the 90 second speed test tape) are indeed valid and recorded properly the Pioneer HR-series decks are nice- but one thing is glaringly apparent- they really should have put an AC motor in those decks- and external head height adjustment thumbwheel. If they did, the deck would actually be better than any Akai or Telex- because the electronics and circuits in the Pioneers are more modern and efficient. The channel switch is brisk and quick, and not excessively noisy- Excellent build quality as well. perhaps an AC motor swap into a Pioneer will be the next project... |
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#2
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wow/flutter test on a Pioneer HR-99
On 14 Dec 2006 05:23:21 -0800, "duty-honor-country"
wrote: yesterday I was at at my friend's repair shop working on my HR-99, and decided to test the deck on his wow/flutter meter- this meter puts out a continuous 3000 HZ tone- so we pulled a blank tape off the workbench shelf, and taped a 3000 HZ tone from the generator onto track one, then played it back into the wow/flutter meter and checked it an old unserviced Scotch brand 90 min blank, with shot pads, in need of servicing- dry reel and pinchroller posts- it registered .35% wow/flutter, or 1/3 or a percent snip Idiot...that means nothing. You need a CALIBRATED FLUTTER TAPE to do a realistic wow/flutter test on any analog tape machine...not those frauds you sell on eBay. In fact, I know of NO commercially available 8 track alignment tapes except for the Nortronics, that have a CALIBRATED 3 KHz tone that is suitable for w/f measurements. Some "tech" you've got there, Noodles. Who is it...one of your imaginary friends in your schizoid brain? Since flutter components in an analog tape system can be cyclical, simply recording/replaying a 3 KHz tone and playing it back into a w/f bridge may yield either double the amount of real w/f, or a fraction thereof, including complete cancellation. Your "test" is invalid. You're an idiot, Noodles...face it. I'm surprised it wasn't a lot worse than that ! snip It probably is. I'm going to return with a serviced tape w/3000 HZ tone and see what kind of improvements can be made- not expecting much, since all the Pioneer decks have the small DC motors- and will show more wow/flutter than an AC motored deck like a Telex, Akai, JVC while there, I ran my Audiotex alignment tape through the -99 and into the frequency counter on the bench, and monitored the tape through the bench speakers- and kept adjusting the motor speed until the counter reading matched what the test tape tone was brought the deck home, and it was dead nuts on with my 90 second speed test tape- verifying that both test tapes (the Audiotex and the 90 second speed test tape) are indeed valid and recorded properly the Pioneer HR-series decks are nice- but one thing is glaringly apparent- they really should have put an AC motor in those decks- and external head height adjustment thumbwheel. If they did, the deck would actually be better than any Akai or Telex- because the electronics and circuits in the Pioneers are more modern and efficient. The channel switch is brisk and quick, and not excessively noisy- Excellent build quality as well. snip This is a complete fabrication. Charlie Nudo has NO clue as to what he's babbling about. ..35% W/F unweighted is GOOD for any 3¾ consumer grade machine, but since it's a record/playback cycle using a tone from an oscillator, it's completely invalid. Typical for this dirtbag. perhaps an AC motor swap into a Pioneer will be the next project... |
#3
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wow/flutter test on a Pioneer HR-99
duty-honor-country wrote: yesterday I was at at my friend's repair shop working on my HR-99, and decided to test the deck on his wow/flutter meter- this meter puts out a continuous 3000 HZ tone- so we pulled a blank tape off the workbench shelf, and taped a 3000 HZ tone from the generator onto track one, then played it back into the wow/flutter meter and checked it an old unserviced Scotch brand 90 min blank, with shot pads, in need of servicing- dry reel and pinchroller posts- it registered .35% wow/flutter, or 1/3 or a percent I'm surprised it wasn't a lot worse than that ! I'm going to return with a serviced tape w/3000 HZ tone and see what kind of improvements can be made- not expecting much, since all the Pioneer decks have the small DC motors- and will show more wow/flutter than an AC motored deck like a Telex, Akai, JVC while there, I ran my Audiotex alignment tape through the -99 and into the frequency counter on the bench, and monitored the tape through the bench speakers- and kept adjusting the motor speed until the counter reading matched what the test tape tone was brought the deck home, and it was dead nuts on with my 90 second speed test tape- verifying that both test tapes (the Audiotex and the 90 second speed test tape) are indeed valid and recorded properly the Pioneer HR-series decks are nice- but one thing is glaringly apparent- they really should have put an AC motor in those decks- and external head height adjustment thumbwheel. If they did, the deck would actually be better than any Akai or Telex- because the electronics and circuits in the Pioneers are more modern and efficient. The channel switch is brisk and quick, and not excessively noisy- Excellent build quality as well. perhaps an AC motor swap into a Pioneer will be the next project... perusing the specs for the Akai 80-81-82-83 decks, it's interesting to see that the AC motor decks are listed at .35% while the DC motored 83D is listed at only .15% http://www.8trackheaven.com/Images/akaicr83d.JPG having owned all of the above, I can safely say that the AC motored decks are much more stable and better sounding ! the test done on the Pioneer HR-99 was with a 90 min tape without lube- no doubt a 35 minute single-LP tape that has been serviced, will knock that W/F number down even more. another interesting spec- early AC motored Akais listed at freq response to 16 khz on the top end while the 83D is only listed to 14 khz that's one major reason I never kept an 83D- I could hear the lower freq response compared to the other Akai decks, Telex, JVC, and Pioneers |
#4
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wow/flutter test on a Pioneer HR-99
On 15 Dec 2006 10:02:27 -0800, "duty-honor-country"
wrote: while the DC motored 83D is listed at only .15% http://www.8trackheaven.com/Images/akaicr83d.JPG having owned all of the above, I can safely say that the AC motored decks are much more stable and better sounding ! snip No one believe you. You're a moron, with no electronic or magnetic tape knowledge or ability. You're just a dumpster diver who unloads crap on eBay...or used to, anyway. the test done on the Pioneer HR-99 was with a 90 min tape without lube- no doubt a 35 minute single-LP tape that has been serviced, will knock that W/F number down even more. snip Idiot...a record/playback "test" using 3 KHz out of an oscillator is MEANINGLESS as to the wow/flutter characteristics of the machine under test! USE A CALIBRATED ALIGNMENT TAPE to get real results, like I did, last year. With your harebrained scheme, you'll get different results every time you play back the same 3 KHz tone, due to either addition or cancellation of the repetitive/cyclical components of the machine's speed inaccuracy phenomena. Hey Noodles! Sell any of your "research" finding "pigmies" in Australia to any university anthopology departments yet? What an idiot! |
#5
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wow/flutter test on a Pioneer HR-99
brought the deck home, and it was dead nuts on WTF does this expression mean? Dead nuts on what- your forehead? perhaps an AC motor swap into a Pioneer will be the next project... Be sure to stand in a puddle when you do it. Oh- and be sure to run the 12-volt line in thru the 120 volt motor. Be sure to do it while you are in said puddle. |
#6
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wow/flutter test on a Pioneer HR-99
On 21 Dec 2006 09:36:54 -0800, "Stereo__8"
wrote: brought the deck home, and it was dead nuts on WTF does this expression mean? Dead nuts on what- your forehead? snip His nuts have been dead since his teens, owing to all the toxins in NE Penna. That's good...he can't reproduce anymore! perhaps an AC motor swap into a Pioneer will be the next project... Be sure to stand in a puddle when you do it. Oh- and be sure to run the 12-volt line in thru the 120 volt motor. Be sure to do it while you are in said puddle. snip The moron has a 120V home deck up on FraudBay now that he claims he used a 12 V power supply to work on. WTF??? Typical Charlie Nudo bull****. Note that the only thing with a bid on his "66fourdoor" fraud sales is another of his bogus alignment tapes, and that'll probably go down the ****ter, as well. Charlie Nudo, "66fourdoor" = NO BIDS! |
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