BA-5000 Sansui Power Amplifier. The Best Ever? Old Vintage Stereo Repair Restoration Testing.
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- เผยแพร่เมื่อ 4 มี.ค. 2020
- A Sansui BA-5000 stereo amplifier repair and restoration video. This BA-5000 vintage stereo amplifier is one of the most highly regarded products ever produced by Sansui. This was a top to bottom repair and restoration that after 40+ years of service this vintage amplifier needed. This Sansui CA-5000 was in terrible cosmetic shape when I obtained and it needed the old electrolytic capacitors, troublesome diodes and transistors replaced. This is the only Sansui audio product that ever used output transformers. 300 watts into 2, 4, or 8 ohm speakers.
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Ugghh.....the way these are just neglected and left in people's basements and attics for years collecting dust and Lord knows what else. Bless you for giving it the tender loving care that it deserves. Sansui for life!
Thanks and as I said in the video, I expect her to be making music for the next 45 years.
@@vintageaudioaddict Hello, are you available for repair and what state are you in? Thanks.
I remember seeing these amps when they were brand new. They were a little above my price range at the time, but I bought and still have a TU-717, AU-717 and AU-919 that still work to this day. I'm sure they could use a recap and I will do that myself at some point, but these old Sansui's were bullet proof. I've really enjoyed your video. That's a lot of work, but well worth it : )
Evidently you have a very thoughtful wife. If I had your talent to repair this classic equipment I'm afraid I would also have far more pieces than I could handle, lol. I wish there were more people who cherished these classics because I don't think we'll ever see this quality again.
Thanks for the kind words. Yes, she is special. What woman is going to tolerate all of this stuff. One advantage for her is that she knows where I am and what I'm doing, LOL.
My old Sansui AU-555a amp and separate tuner are going strong after 47 years. Sounds are excellent with my home built Speakerlab component speakers. Taking care of equipment really pays off.
Great to hear that you've had your gear that long!
@@vintageaudioaddict I forgot to say I really enjoyed every part of your repair video. That amp is a real beast. I never knew Sansui even produced monsters like that. My brother also has old Sansui gear he brought back from his military time in S.E. Asia.....I believe his is an AU-777a amp and tuner? I did my first pot replacement the other day on a control unit for RV jacks and it came out great....and I saved myself about $450 for a replacement. Keep them coming VAA.
Wonderful to see you caring for this amp.
Thank you for restoring this beautiful piece, it definitely deserves a renewed and appreciated life. Wish they built them like that now. Great job!
I'm going to say it again....Your Awesome... Thanks
This is a very good looking a!mp
Glad to see you rebuild this
Thank you for watching.
This was lovely to watch. Thank you so much for sharing.
What a beauty. Great find!
This is a serious amplifier made when good sound was truly the aim. We are lucky to see one still being used. Your restoration is very sympathetic to the original design and I greatly appreciate it. Have had to fix some older gear occasionally but usually some butcher has tried to fudge it but failed, making full repairs not financial, have occasionally kept the casework and replaced the power amp with all new to increase reliability.
well done , it looks mighty fine.
Greetings,
I've just subscribed. I saw the word _Sansui_ and all of a sudden, this brought me back to a time in the mid-eighties when I had just left home and moved into my own flat. I had a Sansui amp - though not this particular one - mated to a Regar Planar 3 turntable and Mission loudspeakers. Later, an Aiwa cassette deck was added.
Congratulations on your _man-cave_ as we call it over here in the UK. Cloistered away from _her-in-doors_ most of the time is the best way to preserve a marriage.
Great video, thanks for saving your beautiful Sansui BA-5000 power amp and great Christmas present from your other half !
I subscribed and look forward to many more videos from Vintage Audio Addict.
Thank you.
Great to see the heavy weights kept alive, I only have the BA-3000, hasn't had speakers connected(a load) in years however powers up in the right sequence, throw power switch, LED goes red to green and VU meters simultaneous do there half mark twitch. 160 per channel was plenty in an apartment back in the day. You've sparked my desire for the old audiophile in me. Give me a few days I'll play some Donald Fagen. I'm warming it up right now, One unique characteristics of the BA-3000 was it's round transformer. I've had the amp since 81-82. Thank you for sharing your passion.
EXCELLENT JOB !!!
man, great job, it,s the top of the sansui series.
Great video showing us all the circuits. Thanks for sharing, very valuable information. Good Job!
You're welcome and thank you for your kind words.
Ive seen this video before, but i need my audio fix tonight
I always love it when someone say best ever made, Sure glad there's someone that is the know all to stereos
Opinions very.
@@bdg77 He didn't say it was his opinion he said best ever made like he knows it all when he clearly doesn't
What a beautiful beast!
It reminds me some SS McIntosh power amps with output transformers.
Very nice acquisition, indeed!
Enjoy it for long, long time.
Thank you very much! Yes, it was in many way's Sansui's McIntosh.
Good job. You earned that thumbs up! 😂👍
What an awesome christmas gift!
Dear sir you are God gifted person.....I hav lots of callection of high-end audio aquipments..... apriciate your hard work, its not easy to restore such amp unless u hav the passion for it....thx for sharing.... regards from small village India....maharastra state....palghar vasai
Great work, it requires a very patient & passionate person to do such repair & restoration work. To me, you are an excellent craftsman. Kudos to you. I know much time and effort, you need to put in. Not to mention the amount of cost involved. I used to build my own amplifiers during my school's day. That was almost 50 years old. I also had a Sansui AU-777 tube amplifier. it was an excellent amplifier. Keep up this great passion! and thank you for this great video presentation. Excellent work & may you be blessed. Have a safe day during this pandemic time.
Your videos are fantastic!
Definitely gonna be a fun one
Beautiful unit. I continue to enjoy the heck out of this channel. Im now looking out for some old gear.
Thank you so much for your kind words. There was so much great equipment made back in the day. Good luck on your search!
My best amp! I love it!
Thx for the treat - I just get some coffee and start my night. OK - it´s definitely time for my Christmas gift. BA-5000 and CA-2000, please! Here is a great youtube Christmas wonder story: a fan(K) of the Vintage Audio Addict channel watches carefully as his most wanted favorite HIFI-gear getting thoughtfully fixed by a "godly gifted youtube channel running engineer" who originally got the dream couple from his precious wife who loves her husband more than the air she is breathing. And here is the miracle: somehow, about Christmas time the two beauties (BA-5000 and CA-2000) made their way over the Atlantic right into southern Bavaria. Oh, what a wonderful world we live in. Cheers.
Greetings from the USA! Thanks so much for your comments and your dream which became my reality. You know you are with the right woman when she gets you vintage audio equipment for Christmas!
@@vintageaudioaddict It is a great pleasure watching you "fixing" equipment - I come from the other end - the abuser side I have to admit... and somehow I can´t really regret it - we had so much fun with the amps, pre-amps and drove them to their limits. The equipment of these times in our eyes was just nearly undestroyable... (but it wasn´t of course)
Greetings and thx from here to Mrs. Vintage Audio Addict.
Good review and nice workmanship.
Awesome video! 👌
Thanks!
Amazing work! Excelent video.
Thank you very much!
Very satisfying video to watch, and your work and knowledge is impeccable!! Just to see this amp in person is amazing, to own one is extraordinary!!
Many thanks! The BA-5000 is an amazing amplifier. I don't remember seeing this amplifier when I was growing up in the 70's. I think this is the first one I've seen also.
NICE save!!!... that is a VERY special amp! With a some peculiarities I must say.
Hope you doing ok ? Haven't seen any videos lately , love the channel !
Lovely amp!
Thank you as always. No need to hit the gym after moving this guy around.
@@vintageaudioaddict 😅
sansui one of the best power amplifiers, the pre - amplifier are great too
Sweet! I want one for my Thiel CS2.2 speakers, which are very hard to drive. Excellent work.
Awesome video
Glad you enjoyed it
Amaaaazing amp! Best ever !
Amazing job 👍🏼👍🏼 This amp has now found its rightful owner.
Thank You!
I've owned many amps from the 70's to mid 80's...some purchased new and others used. To my ears, the best sounding amp and possibly most reliable and well built, with the exception of the speaker terminals is the Yamaha MX-1000. I had two of these (bought new). Recently sold them for more that what I paid (not factoring for inflation).
Thanks for sharing!
That is perfect for some Magnepan
What a gorgeous piece -
Thank you. Yes, she would be perfect with Maggies.
I would like to know more about your cleaning technique, solvents, soaps, brushes, sponges, etc. The things to do, and not to do, and why. Cleaning those meters would be a priority given their delicate nature. Excellent video. Thanks!
Thanks for watching! Well on any faceplate you have to be careful. If it's a aluminum faceplate start with warm water and a little dish soap. Rags, paper towels, old toothbrush all work well. See how it goes. Beyond that I've used Mother's mag polish successfully but if you try that make sure you test a small area first. I've never had an issue but that doesn't mean you won't. Any of the old fisher, scott, mcintosh etc. glass faceplates I wouldn't get anything wet around them. NO water, windex etc. I've seen too many ruined faceplates to take a chance. Plastic like the meter housings water, windex etc. works for me.
@@vintageaudioaddict thank you. What about cleaning the interior, including the mess on the output transitors, or the boards and their components? Do you start with a vacuuming or a brush, do you use liquids, and how long before everything is dry? Do you use soap and water there? I saw you use some brush on deposit. Why would you need to deoxidize the underside of a board? The solder oxidizing shouldn't affect the current flow there or does it?
very good, thank you
Thank you very much.
your other half likes audio gear? DUDE your other half IS a keeper.
Great video! I’m doing a neglected AU 20000.
Thanks! Good luck with your AU-20000. It's a wonderful integrated amp.
I like the Sansui
I've had a black McIntosh MC-2500 powering my fullrange Acoustats. It is rated at two times 500 Watts at 2, 4 & 8 Ohms but was rather helpless with the load presented by my Acoustats. A Mark Levinson ML-3 without autoformers and "only" specified for two times 200 Watts @ 8 Ohms powered my Acoustats beautifully and without a problem. I do not think the Sansui BA-5000 would fair any better with my Acoustats as the Mac or any other tough load.
Like the video though and the effort you put in your work and the opportunity to hare it with us and great that you salvaged it!
I love watching the repair you made on this sansui, wish I was just as good as you are on repairing.. Keep up the good work. By the way, i would like to ask regarding my Yamaha R2000 which is close to 40 years old too. Is it ok also to replace some parts with same value but not the same voltage? Can you check the power amp if it can be replaced with other more modern part now? Hope you can be of help. Thank you and God bless.
Love your work! Secretly I would love to be able to do the same. Who knows...
I have a CM Labs 920 amp that I've had for 40 years and it's original except for power switch. It's used regularly, looks great but the transformer has started to buzz. Should it be replaced or can it be redone without too much expense?
It is just sad to see how people treat their equipment. Great job and great video!
Yes, thanks
What a great hobby! What do you clean the circuit boards with?
Hello, first of all I wanted to congratulate you on that restoration, because taking advantage of your experience, I request your support, I just bought a BA5000, in very poor condition, it was stored for many years without use and all its power transistors were removed from the rear panel, except for the dirt and rust in theory, it is still functional because the only thing it lacks are the transistors, so your support in this sense, would be if you could provide me with an image of the rear panel where the values of the transistors are, their location and its position since I observe in internet photos that the direction of the text changes and that means that its position differs, now I could also observe that for example if it takes a row and hence 5 transistors the third, that is the third, its value it changes and that detail I could see tango in the upper and lower fil, so it would be very helpful to have the image or, if possible, the list with the values, to That the technician can put them properly and not make any position or value errors and that damages something, or if there is any way of contact, by mail or messenger to send you detailed photos of the team and thus be able to explain to the technician correctly, it is worth mentioning that the service manual already has it printed, but do not locate what I was asking you. Thank you in advance for your attention and support. Best regards.
AWESOME, bit of Hard Work. PAY'S-OFF 🏁🤪👍. 🌝
Yes, it does and thank you!
@@vintageaudioaddict Your Welcome
Nice restoration work, cheers! I own a BA-5000 with matching CA-3000 preamp, they are awesome. Just wondering: Is it normal for the BA-5000 to run very-warm after its on and playing music at moderate volume for a while? Mine does get rather warm when I put my hand on the cover. The cooling fan is designed to come on at 158 degrees F if I recall correctly according to the spec in the service manual. I dont think the fan has come on when Ive played the amp, but it would be helpful to know if its ok to get a bit hot even if the bias measurements are all within spec, considering all the power-out transistors it has. Did you notice any difference in temperature when comparing the before & after of your restoration? Would applying fresh thermal compound to the transistors make a significant difference in lowering the heat dissipation?
Very nice work! Would you know how the BA-5000 compares in sound to the BA-F1 ?
How long has it been? 4 or 5 years?
Seriously, though, GREAT job, and entertaining to watch!
Thank you so much for watching!
great
I hope i can have one vintage sansui.
I worked in the HiFi trade many years ago and i remember seeing this Amp and Preamp combination at a trade show i was blown away by the size of the unit it reminded me more of an industrial arc welder than a piece of hifi kit truly awesome, but god i would love one even today i would give it house room.
I have one of these the face panel needs painted. Any Ideas. It was heavily scratched as a road amp and also I need handles for the front. Had the same common emitter transistor problem as you and corrected it the same way. Repaired this about 7 years ago and it is my main amp for my front speakers. I use a Technics Se9600 for my rear speakers. A Sansui AU-11000 for my deck speakers.
Re-painting faceplates, I'm not sure. I've cleaned a lot of them but I've never tried to refinish one.
Great videos...looking for someone to resurrect my Sansui G9000 (that I've had sitting in the closet for some 8 to 10 years now) that is close to south Florida to I can take the unit to them for restore. Right channel intermittent and needs new lamps. Never been serviced except for a cleaning in the late 80s. I'm original owner. Bought it in the Philippines in the late 70s along with a pair of SP. L800 speakers that I still use today.
Thank you! Google "vintage audio repair" or "vintage stereo repair" and see if there is someone down your way. I imagine between West Palm Beach and Miami there is. That way you can just put your G-9000 in the car and take her to the shop yourself. The G-9000 is a wonderful receiver. Good luck with her! You didn't say but I imagine you were in the Philippines because you were in the military. Thank you for your service!
Wife says, a hobby should keep him out of my way! :)
I have no right output from my Sansui au2022, regardless of the the input. Does anyone know what the problem could be???
Mit Respekt haben
Nice amp !!! Almost done with my G-8000 , it set in a closet for 35 years ! Got a lot of time on it just cleaning it , everything is orginal and looks almost new inside , I would like to re-do tje protection board , you know every G-8000 i see the left side driver board is always missing its cover ? And the right side always has the cover , you know the boards by the filter caps ?
Thanks! When you get your G-8000 done you'll have to post a video. What a pain in the arse that process is, LOL. Well, I think that both the left and right side covers were there originally. You wouldn't think that would be something easy to forget to reinstall if someone was working on the unit. Maybe a screw but not a cover. I don't know......
@@vintageaudioaddict will do , I dont know why someone would have that covet off the left side driver board its all orginal , But yeah i will be done with it this weekend , I got to all pots the pots for cleaning that was a pain but just took my time beautiful machine
Ohh did you change your main caps ? Lol point to point soldering 😆
Bom dia esse amplificador sansui está a venda ?
Quales el precio de este Amplificador por favor
How did you "experiment" with the bias transistors? Why the heck would they design something so important like bias transistors to be ran extended off the board with wires like that?
How do you feel about using LEDs to replace meter lamps in older gear?
It all depends. It's really a personal preference. Sometimes LED's look good to me and sometimes they don't. I have used both and still do.
Any thoughts on PA grade 1984 Panasonic Ramsa WP-9210 amplifiers?
I've never heard or even seen one so I can't really say.
Still prefer the Sasui 881 into GENESIS II speakers. But this has the charm of being my first proper stereo and the nostalgia factor.
See if you can find an ONKYO Grand Integra M-510. What an amp that one was!
I have a M-504 In my collection. M-510's are pretty rare but I'd love to have one.
Maybe the only solid state sansui amp with output transformers. There were many sansui tube amplifiers of course! 😄
Yes, my Sansui 1000-A agree's.
What Percent Total harmonic distortion?
That's a big heatsink but given there's 20 transistors bolted to it there's not much heatsink per transistor. Does it run hot?
Yes, it probably does. I have many a Sansui receiver and always liked the way they sounded. They have amazing power supplies as Sansui made their own including the transformers. However, as you see yourself, they are known for not having large heat sinks and I have found that they do burn their transistors out easily if you are not careful with the load. Sansui's pretty much are 8 ohms only. This amplifier might be an exception since it has the transformer, but mismatching the load is what probably burned the outputs out. Still, when it came to the older vintage stereos, I just liked the sound of the Sansui's the best. Pioneer was a close second and then Technics. Marantz is also a good sounding receiver, but I don't like the way they look so I never bothered with them. The largest Sansui I worked on due to blown outputs was the G-22000. And yes, after I fixed it, it did run very warm to hot running into an 8 ohm load at about 75% of it's rated power. Nevertheless it was LOUD! But just a warning to you if you go with Sansui...if you push them, they push back by blowing the outputs. Almost all should be gone through, cleaned and biased properly to specs. The 75% rule is pretty good to follow as well. So if you listen to music and you find 75 watts a channel loud enough, go for a 100wpc receiver (or more). Just be careful if you go too high on the power as you can damage your speakers from overpowering. This is naturally easier to see if you get a receiver with power meters and I highly recommend that. This amplifier above would be too big for my tastes, but I just looked on as it is a nice looking piece.
I wish I could send my luxman 5m21 power amp to you, the dc offset on it just keeps rising until it goes into protection. I can deal with basic electrical faults but this is out of my league. I do think i know what the fault is but i'm not going to just throw money at it until things work
That's a great story about the "Boss" taking charge and getting that amp for you. Did she get a good deal? Love the channel. Cheers! 👽🖖"Na-nu"
I didn't ask about the price but I think she probably paid up. I'll just walk away if I can't get the deal I want. She'll just pull out your pocketbook. Actually I'm really glad she got it. These don't come up very often and I'd probably still be thinking about leaving the amp behind.
@@vintageaudioaddict I'm kind of new to your channel, so I apologize if you've already answered this question, but do you ever sell your repaired gear? You have an amazing skill set and I would imagine your talents would be in great demand. We have one shop (basically one guy) who every goes to and the line is always long.
@@vcp93
It takes too much time to be worth what people would be willing to pay. He's probably got between fifty and 100 hours into everything it to took to do all he did. Imagine paying someone fifty bucks an hour to do that. I'm guessing you wouldn't.
I live in Zephyrhills FL. Where is your shop
Drinking game: every time he says “45 year old.”
Any good technicians for amplifiers in and around thane.
drinking game is as old as a buckskin condom. but id die within 2 shots so ill pass lol. someone may take you up with it my friend.
R1Willem
Holy shit!......I was thinking the exact same thing!!
Take care....have a good day! Jim.
these BA-5000s are quite rare, not a single one has come up for sale on ebay in at least the last 6 months to a year and only a handful of Japanese models come up for sale on yahoo Japan. This thing was a BEAST back in the day weighing 108 pounds. You think the G-33000 pushes speakers well? The BA-5000 is a step above the G-33000 in output performance and I'd get a BA-5000 with a CA-3000 and a TU-9900 tuner any day over the insanely overpriced G-33000 and pocket several grand in the process.
Might be a great amp but, This thing has been busted up a few times! Why did it keep breaking down considering the amount of repairs previously done to it? Or are they just not built very well?
Sure does look like my McIntosh MC 2105, including the output transformers, engraved schematic and, of course, Vu meters.
YO 'ive got a Crown Macro-tech 5000 with one channel sounding like crackle music noise. any ideas, or maybe send it to ya
Thanks but I only work on my own equipment.
Ala McIntosh....those Sansui engineers must have been lusting over Mac amps when they designed this beauty....LOL!
I love vintage audio but DAMN even in poor condition they go for THOUSANDS! 🙀🙀😤😤
I have sansui au-20000, But I have A-little problem , one of Speaker, does have hummm sound in woofer , but not much, What do you think about to solve this problem?? I have changed all Capacitors, with ELNA, Sound is really much better, But I have checked With Technician, But they did not found , why Humm sound come in one speaker. As you have experience, whats your idea about that?
The first question is did you have the hum before the re-cap that was done? That is the first step. If the hum was there before the re-cap then you could have a grounding issuing being caused by corrosion on a grounding point on the chassis. Of coarse, this is just a guess. If the hum is new after the re-cap then you must go back through and re-check the restoration work to find the issue.
@@vintageaudioaddict Hi, Thanks for your answer, Yes, Before and after Recap, still have the issue. but I check Every things, But When I turn down the Midrange on front panel , the Humm comes down, but when The Midrange is 0 the sound come more until 10 that, I have hummmmm more.
I checked 3-4 times, All of things, and also When I open the front panel , and pul out, The humm sound is 90% disappear.
*I've had the Sansui G-7700 Tuner Amp for 20 plus years and has served me well; however, It's been in the shop three times for either the left or right channel which don't last very long and now, both are out I suppose. There might be other issues that are causing it, but It is my understanding that Sansui no longer has left or right channel outputs for Tuner Amp, and so It's been sitting on a shelf for many years, sad but true. I'm not sure it's worth fixing even though it's been a great system and is still very clean?* *It may take a wizard to fix, like yourself!*
getting genuine parts is a key factor as well as a tech that cares about his/her work. Parts from china are iffy at best. There's so much counterfeit stuff hitting the markets, or old parts being stripped from equipment and sold as new. There's a reason a US distributor like Digikey might charge 10 times more. It's the real part and it not only meets original specifications, but it can be traced to the manufacturer. Parts need to be matched and verified on a curve tracer, if you have something worth repairing. You should not be having channel consistently going out because the same parts need to be replaced.
great information you shared... let me guess... this is a 45 year old unit.
Can he handel a set infinity kappa9?
not a problem
BGW made some monsters.
BGW is better than that sansui. More damping factor and power. No transformer for matching impedance. I have BGW 750b. Great power.
The diode replacement on the meter board puzzles me. You stated the originals were known to be problematic. OK, why replace with 2 in series? Not for piv, 4007's are 1kv. Not to match Vf, originals look to be single diodes. No mention of sil or germanium type. Paralleled anode to cathode across the meter makes a good protection circuit, but yours are in series. Sil in series with a zenier for Temp compensation I have seen also, but this is not that. So I am puzzled. I accept that you did the right thing, I just want to know why. I have owned Japanese iron before. I have an AU999 awaiting it's turn for repair, and a Pioneer SX-5590 working great. My taste ran to Onkyo, until I discovered vintage McIntosh. The problem with high end audio is, most people have never heard it!
HI CAN YOU CONVERT A EDDY STONE 830/4 TUBE RECEVER TO A HOME STERO AMP.
Sorry, I don't know.
Looks a lot like a Mac amp. They also used transformers and it gave the sound a character.
When clarity is too challenging, go for character! 😋
Whats the best way to contact you about having work done?
Thanks for asking but I'm a hobbyist not a professional. The equipment you see in my video's is from my personal collection.
Um, I have heard krell power amps but not this one, however claiming best of all time would be a tough call without a shootout i.m.o. I do however remember you needed a forklift to move those krells!
This one is a heavyweight also. More then 100lbs.