Akai GX-F91 Pre shipment check
30:58
14 күн бұрын
Пікірлер
@giuseppelavecchia775
@giuseppelavecchia775 6 сағат бұрын
Amico,oggi trovare tecnici cosi,sono cosa rara!
@-Goodwin-
@-Goodwin- 9 сағат бұрын
Стопорную шайбу на 27:29 попробуйте снимать маленькой плоской отверткой. Нужно жало отвертки вставить в один из вырезов в шайбе и провернуть, как-будто закручиваете или откручиваете винт. Только нужно придерживать шайбу пальцем, она может спружинить и улететь навсегда.
@hifirulezzz
@hifirulezzz 9 сағат бұрын
Там почти не было щели, тонкий пинцет не влазил, не то что отвертка. Знаю я все.
@goldenmusic0716
@goldenmusic0716 9 сағат бұрын
Приветствую! Грубоватый съём щёток мотора привода кассетоприёмника! На крышке мотора, есть две радиальные прорези, согнув скрепку буквой П, далее провернуть и щётки раздвинуться, освободившись от коллектора и не деформируются! Особенно при установке обратно, желательно сделать так!✋
@hifirulezzz
@hifirulezzz 9 сағат бұрын
всегда зависит от размера. когда места мало то использую пинцет чтобы развести щетки.
@patrickgajadhar5723
@patrickgajadhar5723 13 сағат бұрын
A great video, thanks
@никникович-л5о
@никникович-л5о Күн бұрын
Здравствуйте. Как вам усилитель нравится по звуку?
@hifirulezzz
@hifirulezzz Күн бұрын
я починил этот усилитель не для себя и его не слушаю, но в целом звук сбалансированный.
@никникович-л5о
@никникович-л5о Күн бұрын
@hifirulezzz спасибо
@80sGuy.
@80sGuy. Күн бұрын
Great work as usual. I got a glimpse of a label on the back of this deck and it was previously serviced by premiere Nakamichi specialist 'E.S. Labs' in CT. Probably some time ago. What else did you do to it, recapped or just adjustments?
@hifirulezzz
@hifirulezzz Күн бұрын
Sorry, I have serviced so many decks, and this was a long time ago to remember.
@PoPanzPoPanz
@PoPanzPoPanz 4 күн бұрын
looks like an akai gx-75 or 95 at 4:00.
@hifirulezzz
@hifirulezzz 4 күн бұрын
@@PoPanzPoPanz yes, looks similar, 7100 and 9100 were models for local JP market and the only difference was that amplifiers were made of discrete components, not ICs.
@PoPanzPoPanz
@PoPanzPoPanz 4 күн бұрын
@@hifirulezzz Ahh. Thanks.
@Zimmy_1981
@Zimmy_1981 4 күн бұрын
Lovely machine & great sound. I can't hear much hiss if any. Are these hard to work on?
@artsimannisto5659
@artsimannisto5659 5 күн бұрын
Top decks,as Big AIWA also. All these and few more,can blow all nakaas out of an bond.
@georgiosz.
@georgiosz. 6 күн бұрын
Nice unit!Can you please tell me how can I adjust the tape speed?
@MrSlipstreem
@MrSlipstreem 7 күн бұрын
Good job. I went through a similar process with a 3-head Teac V-1050 back in 2017. All of the resistors relevant to time constants were replaced with 1% metal film and capacitors with 5% Wima film (matched pairs per channel), and all polarised capacitors in the signal path were replaced with appropriate Nichicons. I also made a small piggyback board with a peaked highpass filter per channel to sit just after the playback head preamp stage to compensate for low frequency head losses and act as a subsonic filter. The end result was a frequency response of 17Hz to 21kHz within 1.2dB @-20dB with a cheap TDK FE Type I tape. To say I was pleased with the end result would be an understatement. drive.google.com/file/d/0B6DGwrXwCpAoOTFzWjUxSjBsVkk/view?usp=sharing&resourcekey=0-wB6orzDh0umnF8kB4FIbEw
@HiFiGardener
@HiFiGardener 8 күн бұрын
That’s nothing short of magic, pulling 20khz out of that deck. Do you happen to have the mode number of the heads you put into these? Are they the Canon ones on eBay?
@mogadan3582
@mogadan3582 8 күн бұрын
Hi, I follow your videos on this unit and I was able to make it work ,a tip for stocking arm for pinch roller, how I find it’s easy to remove. It’s to use a kitchen torch and heat the part for 2-3 second and then it’s coming easy out.( remove all plastic and rubber first)
@cobratosin
@cobratosin 9 күн бұрын
Hi. I see you don't solve properly fast wind and rewind. To change rubber idler is only a small part on the way to solve problem. I see another large video and have same problem. On each reel there is 2 springs. Between springs is a bushes. That bushes is cracked and moved out and comprime the thin spring and not press on the pulley of the reel. If you see, the reel who spin tape don't move inside because spring is full comprime. There is a clutch and if the big spring not press enough on the pulley the move from idler is not transmit to reel. I solve this on my DD-5 but was like a brain surgery.... Hope you understand me. Sorry for my poor english.
@mohamedeissa8058
@mohamedeissa8058 10 күн бұрын
Thanks. I have the same issue. I will try your fix.
@DiegoArmandovich
@DiegoArmandovich 10 күн бұрын
Деке не 40 лет, эта модель выпускалась с 1993 года. И почему крышка кассетоприёмника от модели 1992 года sony tc k 670? В несколькиз роликах тоже и даже от tc k 620.
@michaelwitt1733
@michaelwitt1733 10 күн бұрын
Please advise as to how to use the fine bias ... Thank YOU
@hifirulezzz
@hifirulezzz 10 күн бұрын
@@michaelwitt1733 well, two options - use external tools like T-100 software to measure the tape response and set the bias precisely OR use your ears, switch between the source and tape and adjust as close as possible. You even may make the recording sound with more highs if desired.
@aaronmaynard698
@aaronmaynard698 10 күн бұрын
How did you replace the battery.. that is not on video
@hifirulezzz
@hifirulezzz 10 күн бұрын
@@aaronmaynard698 it’s attached with a connector. If you read the text below video you may see that I just cut the sensor wires.
@dicktonjin2869
@dicktonjin2869 11 күн бұрын
Hi, I made a comment but it doesn't show up here unless I press the "sort by" thingy. Any ideas. I got my caps today so I will update this in a day or two for progress. Thanks again for the video.
@ganeshganesh67
@ganeshganesh67 11 күн бұрын
What kind of tape quality is used here ,thanks
@hifirulezzz
@hifirulezzz 11 күн бұрын
@@ganeshganesh67 TDK SA
@ganeshganesh67
@ganeshganesh67 10 күн бұрын
@ wonderful and so clean , thank you
@ganeshganesh67
@ganeshganesh67 11 күн бұрын
Fantastic selection of musics, thanks for that sharing and learnt new ones, fantastic recording quality and very very nice 👍
@80sGuy.
@80sGuy. 13 күн бұрын
Just wow! Not the deck, but your utmost expertise.
@DrAlexNeverov
@DrAlexNeverov 14 күн бұрын
Hi! Where are you located in US? I just got Dr-m44hx which need some work. I was thinking of trying myself but maybe it’s a case I need to leave to a pro. Likely idler tire. Can you please pm me to discuss potential options. Thank you in advance!
@harrizzaki3536
@harrizzaki3536 14 күн бұрын
Can you show me how to change the pinch roller?how to open the deck of cassette?
@hifirulezzz
@hifirulezzz 14 күн бұрын
If you dont know how to open deck, I would recommend not to start. In worst case buy $20 deck to train yourself.
@AudioGuyBrian
@AudioGuyBrian 14 күн бұрын
Nice job fixing that problem! I love that model's looks. The VFD and blue tones are so nice on the eyes. And of course the specs of the deck are nice on the ears. A great deck for sure.
@alexnosorog603
@alexnosorog603 14 күн бұрын
What kind of glue did you used to fix pinch rollers shafts?
@hifirulezzz
@hifirulezzz 14 күн бұрын
@@alexnosorog603 No glue will hold polyethylene well. I used nail polish as it dries and fills the gaps. And never ever apply heat on this plastic as well.
@alexnosorog603
@alexnosorog603 14 күн бұрын
@hifirulezzz Tnanks for your answer. Never heard about nail before. Used to know as a recommendation is an epoxy
@hifirulezzz
@hifirulezzz 14 күн бұрын
@ I tried epoxy - it does not hold polyethylene well
@alexnosorog603
@alexnosorog603 14 күн бұрын
@@hifirulezzz Well, thanks. The main thing for me is why you just ain't to removed those brass nuts to get acсеss.
@hifirulezzz
@hifirulezzz 14 күн бұрын
@@alexnosorog603 The problem that arms are stuck on the shafts. I have to use the big bench vise to push the shafts out.
@control1019
@control1019 15 күн бұрын
best but why not autoreverse, just asking
@JK-pv2xx
@JK-pv2xx 15 күн бұрын
昭和の時代にナカミチのカセットデッキ買って使ってたなぁ。
@robbybaker2332
@robbybaker2332 16 күн бұрын
everyones ears are different i personally like the dragon has warmer sound thanks for displaying these
@Duc_hunter
@Duc_hunter 16 күн бұрын
6:17 just was wondering if you were checking record or playback against cpu 18 pin?
@hifirulezzz
@hifirulezzz 16 күн бұрын
@@Duc_hunter that is bias activation signal. I.e. "record"
@viknem-1965
@viknem-1965 16 күн бұрын
Maybe Dragon or A&D 👍but no Sony 👎
@hifirulezzz
@hifirulezzz 16 күн бұрын
@@viknem-1965 how wrong you are...
@СергейЧижов-у2т
@СергейЧижов-у2т 17 күн бұрын
super
@TheMagicStar80
@TheMagicStar80 17 күн бұрын
I am interested to know what are the decks that you decided to keep out of all the ones you heard and repaired so far? This is a very good deck by the way, I am surprised that you are letting it go.
@hifirulezzz
@hifirulezzz 17 күн бұрын
@TheMagicStar80 well, having multiple decks is like having multiple cars. Even if you enjoy them, you have to use them to keep them in good shape. I generally use 3-4 decks and sometimes pull out other decks to play around and bring some color to the gray day. That is why I decided to shuffle decks, sell some, get a few more to fix and see how they perform. My favorites are Nakamichi 6xx series, RX-505 and Sony KA7. I like decks when I see the tape. I still hope to complete the fix for a hum noise in my Revox. Pioneers are good. Akai decks are good either. But only the Sony is precise to the point of being digital sounding decks and Nakamichi is the best sonically even if they are not 100% precise. I love decks from the 1979-1984 era. They sound special, very natural and enjoyable.
@TheMagicStar80
@TheMagicStar80 17 күн бұрын
@@hifirulezzz I think you got the right approach. I feel the same as you do about them. I dont use them often lately but would like to get back to them in the near future and listen to them and also record with them. My favs are similar with yours such as 680ZX quality and extreme sound for both playback and recording, RX505 nonstop playing and also amazing output sound but dont use it for recording purposes. Sony have also some other models that I enjoy for their amazing output sound (Japanese version and European version) and also recording capabilities but also love some of the Akai GX series 3 heads but also Gx-R99. I still cannot say goodbye to the reel to reel deck my Akai GX636 model as l enjoy it too). The Japanese (Akai) A&D 91000 EV is one of the most amazing deck for recording in my opinion. Thanks for your opinion! I value your information you provide on these vintage decks and let's listen to music how it was meant to be listened to on analog tapes! All the best!
@maxfactor4209
@maxfactor4209 17 күн бұрын
What a beauty...❤❤❤❤ Imagine working as an engineer at Akai Japan in early 80s and designing this beast .
@ioanmihai4856
@ioanmihai4856 17 күн бұрын
❤❤❤😊
@ioanmihai4856
@ioanmihai4856 17 күн бұрын
Hifirulezzz the best of
@ioanmihai4856
@ioanmihai4856 17 күн бұрын
❤ hifirulezzz
@ioanmihai4856
@ioanmihai4856 17 күн бұрын
❤❤❤AKAI GX F
@80sGuy.
@80sGuy. 17 күн бұрын
14:30 Digikey - the best source!
@dicktonjin2869
@dicktonjin2869 18 күн бұрын
Hello hifi, from the usa. Thank you for this excellent video! I have the same Tandberg 3012 IA and cannot solve a low level 60hz hum which does NOT change in volume but disappears into the noise floor or music as you turn the volume pot up. At low listening level you can still hear it, which is saddening. (TEL 591 00830) The amp sounds and functions fine otherwise. I changed a few smaller caps (C603 & C604 - both 470uf @ 100V ) near the xformer but it made the problem WORSE. (Replaced with brown Nichicon - same value). After watching your struggles I see the monster cans are hidden under a metal shield. Mine are Elna. 40mm x 90mm 15000uf at 63V, 85C. Q: Should I order the Kermit or the Rubicon? Kemit is closer in size (my intuitive choice) or the Rubicon (better temp rating). Viewed optimistically, my life expectancy is another 11 years so either will outperform me at this point. Both are listed as available as of mid Nov, 2024 at Digikey on the us site. I am am an amateur guitar amp builder and music hobbyist with a general knowledge of electronic components but no training as a tech. I have repaired my Hafler 220 and have kept my Tandberg 3008A alive for the past 40 years against impossible odds. (We can’t get the right transistors- have to find the “equivalent” and then swap the legs but of course this often doesn’t work depending of the circuit they are in. Never got the Headphone circuit to work again after stealing the transistors out of the circuit to power one of the preamp channels,.. long story). Any idea where to start with my hum issue? Thanks again and keep up the good work! P.s. I know little of the world. Digikey have shipping centers all over the globe? So from Sweden you order from Digikey.de and they ship from Germany? (I assume they are all made in Asia somewhere). Or are your parts shipping from America at staggering expense? --- Rubicon $14 usd each (35mm x 52mm) 105C 63MXG15000MEFCSN35X50 www.digikey.com/en/products/detail/rubycon/63MXG15000MEFCSN35X50/3565924?s=N4IgTCBcDaIGwGYCyANA4gRgKwAY9IFEAxAYQGUA5BLFXEAXQF8g ---- Kemit $14.86 each Closer in size (40mm x 77mm) these are 85C like the factory Elna. 399-ALT22A153DE063-ND www.digikey.com/en/products/detail/kemet/ALT22A153DE063/13176411 --- Door number Three,.. www.ebay.com/itm/386750051760?_trksid=p4481478.c101875.m1851 $10 China
@hugoherreradiaz459
@hugoherreradiaz459 20 күн бұрын
Could you put subtitles in Spanish please?
@hugoherreradiaz459
@hugoherreradiaz459 20 күн бұрын
this video does not have subtitles I don't understand your language I speak Spanish
@ЛиньФу
@ЛиньФу 20 күн бұрын
Здравствуйте! Класс никогда не видел, не поделитесь электронной версией?
@hifirulezzz
@hifirulezzz 20 күн бұрын
@@ЛиньФу не могу, уже отправил обратно клиенту, пользуйте видео
@S-Theo
@S-Theo 21 күн бұрын
42:40 Coccyx Balance by Fat Coda Studios
@fanlaz959
@fanlaz959 21 күн бұрын
I d never imagine the degree of the perfection of Akai...And today we strugling to get the same quality of sound with digital, when we already had it
@merlynmetal1396
@merlynmetal1396 21 күн бұрын
Some people recommend using bipolar MUSE caps in the sound path. What about those? Also according to some the 870ES/890ES decks have the "wrong" rec EQ and there's a mod for those (to make it like 970ES). Wouldn't also replacing the 4066 improve the THD?
@AlanWools
@AlanWools 21 күн бұрын
Hello) what is different between this deck and gx-6?
@hifirulezzz
@hifirulezzz 21 күн бұрын
Mostly design.
@genesmasher
@genesmasher 8 күн бұрын
Nothing. It is the same model.
@AlanWools
@AlanWools 8 күн бұрын
@ thank you 🙏🏻
@m80116
@m80116 22 күн бұрын
Unless the carbon track is really messed up crimped joints can be restored using conductive paint. I've already restored incredibly tiny unobtanium pots on portable devices with it: miracle paint.
@Э.О-п6д
@Э.О-п6д 21 күн бұрын
Yes, I have tried this silver based paint too. It actually works well once it dries completely.
@bobmulhiemer7564
@bobmulhiemer7564 22 күн бұрын
Thank you sir! I enjoy watching your videos very much!
@Johny666EU
@Johny666EU 22 күн бұрын
very nice one, well done.