Another way of checking the speed on a cassette deck is by buying the CD of an album then get the same album on cassette and compare them... that assumes that the cassette transport that mastered the original album and the one that made the copy both had the correct speed LOL...
@maxmustardman29810 ай бұрын
Thats ingenious, I happen to be a guutar player🎉
@robertmattison12828 жыл бұрын
Thank for making this video. Your explanation of how the manufacturer are making cassette decks so cheap, was a real wake up for me. Just another subject matter, have you ever use something like WURTH Rubber Care OR a product like it, to re-condition the rubber belts, etc. Thank You for your time.
@12voltvids8 жыл бұрын
No, never used Wurth rubber care. The only stuff I have used is rubber renew and it works pretty good for bad pinch rollers and turn table drive idlers.
@robertmattison12828 жыл бұрын
Great, Ten Four on your reply. Keep making videos and I will make time to watch than.
@user-nj1od4rq4x7 жыл бұрын
Браво! Отличная идея! Гораздо удобнее и дешевле чем частотомер и провода :)) Bravo! Great idea! It is much easier and cheaper than the frequency meter and wire :))
@ACURAOCULTA2 жыл бұрын
Very nice
@CasioGreg9 жыл бұрын
very clever using the 440hz tone. makes me wonder why some deck manufacturers use 400hz.
@12voltvids8 жыл бұрын
+331sbf Actually the manufacture used a 1khz tape. I have a sony alignment tape. The thing is a 1khz tape you need a frequency counter to set th speed unless you are a musician with perfect pitch a even then without a reference. So when many techs like myself did was calibrate a deck using our reference tape, then take our audio generator an tune it up to 440 hz, which is the note "a" and make a recording of that on our freshly calibrated deck. Make several "burner" tapes that we used along with a cheap guitar tuner to set the speed of decks in service. That way our 100.00 factory calibration tape was not going in customers decks when it would get chewed up and stretched. The frequency of the tone for speed calibration doesn't matter. Now the 3khz tape you were referring to was for head azimuth alignment. You hooked your scope probes to the 2 audio terminals, put the scope in x-y input, a adjusted the head azimuth for minimum phase error. You just gave m an idea for a new video thanks.
@12voltvids8 жыл бұрын
+331sbf I had a sony 1 kHz for speed, and 3 and 10 for alignment and eq. To make a speed tape I use a quartz locked direct drive Technics. When I worked for Sony the audio guys (I was a betamax tech so I didn't work on audio at all) used the 1 k for speed, the 3 and 10 were both used. The 10 primarily when calibrating Dolby circuits. There were also sweep tapes as well but myself I only used 1 and 3 k as that is what was in my services kit. I had 4 tapes. One had an inspection mirror to see the tape running over the heads another had the torque Guage hubs, and then there was my 1 and 3k tapes. That is what was supplied to the shop I worked at. When I left I forgot that they were in my tool box as I did with a set of beta and vhs alignment tapes and an esr meter. (which I had built anyway)
@12voltvids8 жыл бұрын
+331sbf A 60 or 46 preferred. 90 is thinner and tends to stretch. To make an azimuth a mono deck is required
@12voltvids7 жыл бұрын
400, 7KHz and 10KHz are the standard tones. They are expecting that someone will use a frequency counter. 440 is the music note "A" so it makes it easy to use a cheap guitar tuner to set the speed.
@Synthematix7 жыл бұрын
Even though the proper musical notation of A is 432hz
@saeedkazemi6161 Жыл бұрын
Very good
@MrSonomac Жыл бұрын
Nice job man! Question, if my deck ‘ s motor cant be adjusted its possible to do a tiny adjustment changing the belt? For a shorter one or larger one to get the right speed! I have a luxman K-10 . Cheers
@LiveSteamMad7 жыл бұрын
Don't you have to use the QZZCFM Panasonic test tape to get the speed correct? Since the RS-M275X has a variable speed control internally to alter it's speed, according to the service manual! So how do you know this RS-M275X Quartz lock deck is actually correct anyway without the actual test tape? It's like which came first the chicken or the egg problem... For my Technics SL-1200MK2 record player I was able to use a digital tachometer to verify that the speed was actually 33 1/3 RPM, as also confirmed by the stroboscope on the side of the platter. Great videos BTW I enjoy them a lot.
@12voltvids7 жыл бұрын
My RSM275 was calibrated with a calibration tape before I made my custom speed test tapes. I have a set of Sony alignment tapes, the speed test with 1KHz tone, azimuth with 7KHz, torque, and inspection tape that has a cutout, and mirror that allows visual inspection of the tape running over the head and pinch roller. Since they are not sitting in front of me now I can't give you the model number. Anyway I verified the speed of my RSM275 with a frequency counter, and made a few test tapes. It is these "work" tapes that I put into other decks to set up. That way my factory alignment tape is not used any more than it needs to be.
@cristianthashoota58412 жыл бұрын
Would it be the same for a double stereo tape deck , mine is a vintage double stereo kenwood with the amp and tape deck all together. Its the ones that came with the 5 cd changer . Would it be the same to calibrate those type of tape decks?
@robertgrlic65053 жыл бұрын
Good video! Why not use a 3000 hz cassette ? 440 hz is recommended?
@12voltvids3 жыл бұрын
3khz is better for measuring W/F but for speed that is not important. A 440 tape is just fine, and guitar tuners are very accurate
@robertgrlic65053 жыл бұрын
@@12voltvids thanks for your time and answer!
@1967HectorRivera6 жыл бұрын
I have a Kenwood KX-50 tape deck that was given to me with the rest of the stereo system. Need belts to run the tape deck though.
@0177MrGreen4 жыл бұрын
Very clever!
@sw61075 жыл бұрын
So if a tape was made from a deck running slow or fast how would that affect the tone, if 440hz was going in from a tone generator. Excellent content on all you videos thank you.
@tacofortgens3471 Жыл бұрын
Certified quartz lock tape deck.
@Synthematix2 жыл бұрын
You know a standard FLUKE 101 multimeter on its "Hz" setting will be extremely accurate for speed calibration.
@12voltvids2 жыл бұрын
I don't have a fluke 101, I have a fluke 12.
@vikingbeard7 жыл бұрын
Thanks for the great video! What kind of liquid did you use cleaning the heads and roller? I've heard you can't clean both with same?
@12voltvids7 жыл бұрын
vikingbeard sure you can. isopropanol alcohol 99% is a good all around cleaner. xylene works great for video and audio heads but don't put that stuff on rubber or plastic as it will melt it. (that is the active solvent of model airplane plastic cement) Freon TF was the best but you can't buy that any more. banned substance. damages the Ozone.
@vikingbeard7 жыл бұрын
Thanks a lot for the good advices!
@smartluck1002 жыл бұрын
I have Kenwood dubbing deck KXW6080. Have tried cleaning the heads with 91% Isopropyl many times with no success. Deck A and Deck B both will not play left channel after I record. Any suggestions?
@fedepede042 жыл бұрын
The cassette mechanism remind me of a tanashin mechanism or a very similar one
@tacofortgens3471 Жыл бұрын
This was the end of the cassette tape
@geojor9 жыл бұрын
thank you for this...
@salusamu2 жыл бұрын
I have an issue with recording in my jvc td 711 cassette deck. It records only on one channel and the quality is bad. Playback is excellent, no problem. One of my friends told me that it could be an electronic issue (recording caps).. Can you explain me how to find and fix them ?
@12voltvids2 жыл бұрын
Could be a number of things.
@randyverblauw95002 ай бұрын
Is the motor the same as in a kenwood kx4520 deck? And what type of micro screwdriver did you use? + or - screwdriver?
@12voltvids2 ай бұрын
Don't know.
@cold3lectric8 жыл бұрын
have you heard the 12voltvids diss track, about the Kenwood cassette deck flywheel?
@gacj20108 жыл бұрын
you know what you are doing ... I would be lost
@Synthematix8 жыл бұрын
In the service manual to my pioneer ct-400 it says +3db is the "dolby level" when i playback shop recorded tapes the vu meter seems a bit "hot" i thought tapes were supposed to peak at 0db? my music tapes peak around +5db on the vu meter should i set the peak level to 0db with a test tape or +3db? ive set the motor speed it is perfect just having trouble figuring out where the vu display should peak on playback
@colloidalsilverwater15ppm882 ай бұрын
My three different decks have different levels on VU, of the same recording. Further, one of them has fewer voltage output when indicating nearly plus 6dB. Pioneer s630s (3 heads) made recording 400 Hz 0dB, Yamaha tells it is plus 4 dB other Pioneer tells it is 6 dB. It is a mess. Think only test tape can help.
@AxellTh8 жыл бұрын
Have an old double deck that sounds a bit tired. The belts seem springe, so could this be a motor issue? The motor is a SHU9L. Althoug it has to holes on the back with some black foam inside, there is no adjustment screw. So are some motor just not adjustable. Which one can I substite it with?
@gacj20108 жыл бұрын
My 80s Sony Boom box just went slow ... I kept it only to have one cassette tape deck to use for old tapes...but you have special equiptment there.. what would make mine just go slow so the voices are all slow baritones??
@12voltvids8 жыл бұрын
+gacj2010 I don't us special equipment. I have a calibration tape and a cheap guitar tuner. What can cause your tape player to go slow could be a slipping belt, or lubricant dried up on capstan shaft, also could be the motor. Should be a speed adjustment on the motor.
@gacj20108 жыл бұрын
12voltvids Thank you ..smart skilled man
@infinitecanadian5 жыл бұрын
They could have fit that into a unit possibly a third of the size. Probably the only reason it wasn't was so that it could be stacked.
@faizfarhan9037 жыл бұрын
Is there any repair the deck video tutorial when cassette tape get eaten by deck whenever play one of the cassette on deck? Coz currently facing the issue where cassette deck eat the tape when played it on cassette deck while that cassette plays fluently on other player which is on cassette combo. Do I need to clean the pinch roller or demagnitize or change the belt on cassette deck?
@bob813547 жыл бұрын
grate job on the video can you tell me what kind of screw driver you are using to speed up the motor l am trying to do the same thing but I can't get it to turn
@12voltvids7 жыл бұрын
It is just a jewlers screw driver that you can buy cheap. They come in a kit with typically 5 different sizes. Usefull for eyeglasses too.
@bob813547 жыл бұрын
I guess I should have asked Philips screw driver or a flat blade because I have seen people using both of them I have tried both with on luck the motor has two wires on it and has the little hole on the top of it with a rubber slit but every time I but the screw driver in it I don't feel anything turning it just speeds up then when you take it out it slows down that's why I was asking what kind of screw driver you where using maybe you can't adjust this one
@12voltvids7 жыл бұрын
Yes you are hitting the control and shorting something. Usually it is a small philips, but some use a slot trimmer.
@bob813547 жыл бұрын
Thanks for your help I finally got it to work with a flat head screw driver I did not know I had to go that far in the motor.Thanks again
@DavidBerquist3348 жыл бұрын
it looks better then what they make today how come on my sony tck2a it requires a line fuse on europen modle but not on us modle i put one in 3 tenths of amp thanks
@12voltvids8 жыл бұрын
+David Berquist In the US model it is inside the transformer. Thermal fuse. In Europe they run on 240v and everything has to have a fuse in the plug.
@KillerZero2599 жыл бұрын
12voltvids is there a reason why you're using a carpet as the mat? wouldn't that just increase the chances of an ESD?
@12voltvids9 жыл бұрын
The carpet does nothing to dissipate ESD. ESD is not really a concern for this type of electronics, and componets in general are relatively safe in the curcuit. Where the problem happens is with unmounted componets, being handled by an ungrounded body. Your body acts like a capacitor and can store enough energy to destroy electronics. But again, once the unit is in a metal chassis, just touching the metal chassis will discharge any build up in your body. At work when we are pulling delicate cards out of equipment, then yes the wrist strap is needed, and if I was working with computer processors, and memory, cards motherboards ect, then I would be grounded, but VCRs TVs audio components ect. They are not that sensitive to it.
@KillerZero2599 жыл бұрын
ahhh, understood, 12voltvids. thanks for the explanation!
@lactobacillusprime9 жыл бұрын
Very similar to my Pioneer CT-225 Tapedeck
@12voltvids9 жыл бұрын
Most are very similar. Unill you get into the really high end units like my Technics, then you are talking a totally different animal.
@Luke-12V2 жыл бұрын
hello, I can ask, please, why does someone use 3khz and someone 440hz, somehow I do not understand 🤔🤔🤔🙏🙏🙏
@12voltvids2 жыл бұрын
440 is great for speed calibration as it is the same as the A string on a guitar for a tuner can be used. 3khz is normally for wow and flutter measurement and 7khz for azimuth adjustment.
@Luke-12V2 жыл бұрын
@@12voltvids thanx 🤗
@Synthematix2 жыл бұрын
However my top end sony walkman has a tiny flywheel and is excellent for regulating speed, its all about power to weight ratios.
@alcoholisfreedrink7 жыл бұрын
hello i have an question. what is pre magnetization and how to correct it on cassette deck?
@12voltvids7 жыл бұрын
I think you mean de-magnetization.Heads used for playback will over time pick up a magnetic charge from the tape. No different than if you rub a magnet on a screw driver the steel in the screw driver will become magnetized and pick up screws.de-magnetization of the head removes this built up magnetization. When a head becomes magnetically charged it will affect the high frequency playback more than anything.Most 2 head decks have a built in demagnetizing circuit. This is the record bias oscillator. Simply putting the machine into record will generate the AC record bias signal, and that will neutralize the magnetic charge in the head. 3 head decks on the other hand, and playback only decks such as car players and Walkman, or portable tape recorders with DC record do need to be manually de-magnetized using a demagnetizing unit.This is basically a coil of wire with a metal probe covered with a rubber tip to prevent scratching the head. You plug the unit it, and the AC magnetic field produced will de-magnetize the head when you bring the probe up to the head, pass over it a few times, and slowly move away from the head.
@alcoholisfreedrink7 жыл бұрын
How can i set it correclty? this is changing recording quality. When i turn it all the way up it will blow away high frequences and recording sounds really bad but when i turn it to minimal the recording quality is better but still not good enough.
@12voltvids7 жыл бұрын
Sounds like you are talking about what the rest of us refer to as record bias.That lets you fine tune the bias signal to the tape formulation.Too much bias and you will loose high frequency, too low and the recording sounds muddy.Some better decks have a self bias feature that runs a frequency sweep and calibrates itself (My old Teac does that) but most it is a manual control, and it is trial and error. Record a few seconds, play it back, adjust it slightly do an other test and play back..Eventually you will find a spot that has the sound that is pleasing to your ear. Of course change brands of tape and you have to set it again.
@alcoholisfreedrink7 жыл бұрын
Thanks a lot! That helped very much. I got it working.
@stepanstranik33264 жыл бұрын
Very nice ... :-) +1
@tomb84303 жыл бұрын
Kenwood probably charged top dollar for that deck. Nothing in there. Even the board looks bigger than it needs to be.
@cm28818 жыл бұрын
Thanks for showing how to do this, where I can buy a reference tape? Can you sell me a copy, I can pay via PayPal.
@12voltvids8 жыл бұрын
+cm2881 I can make you a reference tape with my audio generator and quartz locked, calibrated direct drive Technics RSM275 deck.I have made a few for people. I always use 440hz for speed as a cheap guitar tuner works perfect for this as 440 Hz is the musical note A.
@cm28818 жыл бұрын
+12voltvids thank you. I will private message you my email address and we can take it from there
@craigstaggs85976 жыл бұрын
Can you please try to say Tech-nics not TechniQuEs as there is no Q or E in the brand name - Tech -NICS as it's REALLY SUPER fuckin' annoying !!!! ..... Otherwise love everything you do !!! xxxx Hahahahha !!
@ChristopherColdness5 жыл бұрын
Where’s the fuse
@12voltvids5 жыл бұрын
Inside the power transformer, so when it pops, the unit is done.
@VIDSTORAGE6 жыл бұрын
You don't be scrubbing heads like that ..That is too much pressure on them by making a squeaking noise and will cause damage. ..You gently rub over them
@12voltvids6 жыл бұрын
TOP DAWG Right ok you know more than the rest of us. Heads are metal, rubbing them won't hurt them. The squeaking is the binder that had contaminated the head being cleaned off.
@Synthematix8 жыл бұрын
must remember to never buy a Kenwood tape player thats awful
@svenschwingel86325 жыл бұрын
Their top of the line models are actually amazing.
@Synthematix2 жыл бұрын
@@svenschwingel8632 JVC and teac are the best to my ears
@selimmix5 жыл бұрын
slm hello sony deck tc-we675 sound and recording settings are not good at all tastes do not like you here masters like you can do