A&D GX-Z9100 Wow and Flutter Issue Diagnosis and Recap
ฝัง
- เผยแพร่เมื่อ 25 เม.ย. 2024
- Today, I hope to track down and maybe fix the wow and flutter bug that's keeping this beast from putting down its 0.025% magic numbers and instead keeping it running worse than either of my two Aiwa built belt drive machines.
Along the way, we'll give it a nice set of new capacitors in the power supply and control section. Maybe that'll help. Maybe it's something I haven't even considered yet. We'll see.
Recommended channels to check out:
@hifirulezzz - / @hifirulezzz
@LT.tapeheads.service - / @lt.tapeheads.service
Facebook: / theweatherwolf
Insta: / oklawolf
Camera gear I use:
Nikon D800, Nikon Z50, iPhone XS Max & 13 Pro Max, DJI Action 3, Autel Evo Nano+, Autel Evo Lite+, DJI Mini 3 Pro - บันเทิง
I could see that a Maxell UR tape had been used to make a test tape with! it is NOT particularly professional to use such a low end tape for test tape, I have been a radio mechanic for 40 years and have been at Bang & Olufsen for many years agoe, we used TDK MA-R tape with a maximum of 10 min on it, if used the kind of tape you had bought, it was almost grounds for dismissal. When all that has been said, all that remains is to say that you are skilled and that it is a nice job you do, nice that you don't just say it is good enough!
So you weren't able to get W&F down to spec? I have been also been driving myself crazy with a Sony TC-K555ESII, similar W&F as your Akai (spec should be 0.028%) but mine is worsening after running for 30 min -1 hour (going up past 0.1%RMS and audible). I had a JVC that was better than perfect, as low as 0.018% WRMS and a Technics with 0.03%. I am at a loss what to do when a direct drive won't behave. Tried everything
Can you put links to those channels.
They’re in the description.
Hi. Just my opinion on W&F tapes: Don't need them.
Just record 3k tone in the same deck you want to measure and play it to get the W&F. The measured value is double of actual value.
Nope.
Results of 3kHz test recording with four direct drive decks confirmed decks can't really check their own data. That video will be up on the 11th. I had some VERY interesting results. One of those decks still had a W&F problem - I needed the data from the other three decks to verify, because the problem deck tested ok even with my reference tape. I'm very tempted to fast track another of my quartz lock machines because of those results.
@@OklawolfI am curious to see your results. I get consistent results using this method, but I don't have a true reference tape for comparison. Let's say that the results make sense considering the decks compared(Sony, Victor and Technics Quartz DD, Denon, Onkyo, Victor belt drives). Better results (and close to spec) for the better decks.
@@asbcustomplease elaborate; or, Do you have any video studying/discussing this subject?
I'll say the #1 performing deck was not a surprise, but #2 and #3 were basically a dead tie, which was a surprise because they didn't measure that way with my reference tape. #4 was an even bigger surprise for reasons I get into at the end of the video.
Very nice video! Thank you for recommendations! I really appreciate that.
Regarding capstans check/measure i suggest to get this device: Dial Tension Meter Analog
Cheers
You're very welcome! I've wanted a tension test tape for quite some time. They're expensive. I'll get one at some point.
@@Oklawolf those torque test tapes are super expensive these days, but when you are dealing with not one deck i think it is also nice to have :)