Thanks for the plug! I've got alot of repect for someone as persistent at resurrecting things as you. I just don't have that patience You can get that offset near zero if you've got a matched pair of pnp transistors in that initial stage. Most won't notice the difference with a null offset vs 100mv
+Jordan Pier - A better replacement would have been an actual diff-amp transistor, which is two transistors in one package having five leads (the emitters would be internally tied together). This would also involve removing the other good transistor but the advantages would be that both sections are factory matched and being in the same case assures perfect temperature tracking (this is one reason why amp designers use a diff-amp circuit in higher end units). These transistors hadn't really been introduced when this amplifier was built, so two separate transistors had to do the job.
I liked my 1980's Chevy Citation. One day, 35 years ago, I went outside and it would not start. Checked everything obvious in Shango style and ultimately deduced it had to be the computer. Pulled it out of the glove box and lo and behold, a burnt out trace on the circuit board. Bridged it with a bodge wire, reinstalled it and Voila! It started, proving there is hope for any electronic device. If I were not a ham, I would had been up the creek without a paddle. Great video. I thoroughly enjoyed following your every step. A wonderful journey to success!
Shango that's an understatement you do know what you doing your a master electronics repair person who cares about the comments people are saying you do know what you do when doing I wouldn't watch your videos if I wasn't a true fan I wound not be here I support
Jason JJ Cruz - Exactly. Shango is a super genius at repairing anything his magic fingers/hands touch, that’s why i am still here as his channel never disappoints me & I’m not just boasting about him because I’m in madly love with him, just telling it how it truthfully is! He has always surprised us & never failed yet..........Keep it up Shango as we all think you are the bees knees. :)
Always nice to see a new Shango vid. I'd love to have that amp on my bench. Ugh to those old RCA part numbers before JEDEC (I think it was) assigned standard numbers like the 2N series.
Actually, those were branded by RCA to OEM's. JEDEC was in effect, RCA just decided to use unorthodox numbering, just because they could. A lot of Heath amplifiers used RCA transistors, numbered this way.
Be nice, I owned a Chevy Citation and it served me well. They weren't top end cars but this one drove well and was reliable. The early Citations weren't anything to write home about but the newer ones weren't bad.
Most excellent. The differential amp had already been replace before you opened it up. Originally the diff amp was a single envelope with two transistors (6pins). They are available but very pricey. I did similar to your repair less the two transistors are clued together so they maintain the same heat and balance. You are very fortunate as the two that I repaired had the diff amp blown which took out all the power amps and a couple diodes. Thank you for sharing.
You must never again force Mrs. Miller upon us on a Monday, as it sours the balance of the week, and drives the groundhogs out back completely nutz. That amp is rockin', by the way!
I know it was a big thing not to turn one of those things on without a speaker of a 100 Ohm or so resister across the speaker outputs. For someone who said he didn't know what he was doing you did that quite well. Thanks interesting video.
Following a rant about audiophiles with Deadmau5...... priceless. I give Harman credit for the ease of service on this one, everything just pops out for the most part. Makes it real easy to install those "audiophile grade" capacitors. ;)
If those main filters are original, it just blows my mind it even works cuz their notorious for drying out in the 12. Had two of these amps several years ago that were acting funny and new filter caps fixed them right up.
Yes, its differential amplifier and the 2 transistors should be the same. In this case they don't need to be thermally coupled, because them internal current is low. So they only need to be close together, they are heated by ambient heat in case. But look at schematics, originally there should be coupled pair in common case.
i never liked those pin connectors, i got an old harman kardon amp from a flea market it looked like new, i serviced and recapped it and gave it to my brother as a gift for xmas(he always wanted one). it worked great but the pins were loosey goosey so i soldered them, he has had that amp 4 years so far without issue.
I've got a HK 870, from around 1990 i believe. It has a similar pin header which gave me a lot of grief. These amps seem to have been revered back in the day, but my 870 really likes to break down all the time.
Wow... I admire you getting into this thing. I've been into electonics since around mid-2000s, and one tip: Replacing power transistors: Even if one blew, for stability, replace all of them *of the same batch of manufacture* Dunno really what could happen if you just take out the fried one and replace it with a new one :)
My dad had one of these and a HK preamp. Something was wrong with one of the channels for so many years until it died all together. I wish I would have tried to fix it, but I didn't have the time in college to do that. He said he put it together as a kit (something I'd like to do in the future when the kids get older).
To answer both of your queries: the output Transistors on the Citation 12 are 2N3055s, and the output is 60 Watts/channel RMS, not 35. Be careful with the 2N3055s. They are hand selected at the factory to be able to handle enough current and voltage to produce 60 Watts. Put a garden variety 2N3055 in that amp and it will blow immediately that power is supplied. I used to know the number of a modern replacement transistor that has similar specs but can handle way more voltage and current with impunity, but I haven’t thought about the Citation 12 since the mid eighties and I simply don’t recall.
I built a SWTP Universal Tiger in HS. It was based on the Citation 11. The schematic looked VERY familiar. The circuit loved to go into oscillation. The output transistors were MJ802 and MJ4502.
a bit of search of 27722 transistor leads me to audiokarma thread. 2N5087 seems to be the equivalent. also, you'd better replace the feedback side since they work together. another tips, use a bit of thermal paste and bind them using zip tie to get similar temperature on both transistor. by having small temperature difference, the offset will be stabilized even better
Hi thanks a lot for the very educational video. I would also look at multi-turn encapsulated trimmers for easier biasing and offset regulation. They do not cost much. Kind regards, gino
As always, excellent not just the repair. But your cool I don`t care what this is repair attitude, just the knowledge of how this should work. Thanks , keep making these videos, I love watching them. Please also, keep taking us along for the ride when picking stuff up, or when going to get parts. I know you have done this, but is just as exciting anyways. And the camping tours is also fun =)
HK Citation 12 is good for about 60 watts a side into 8 ohms, they're from around 1976 or so. Great save, though the diff input pair really oughta be matched you proved that it can be done with watcha got! Often the bias trimmer pot is what kills the outputs, in some designs when it goes open it turns the transistors full on and they burn up along with a bunch of other stuff. Depends on how it's tied in (HK must've done it right).
I have some vintage Harman Kardon speakers and they sound GREAT since I turned the bass up a little bit on my yamaha receiver eh its a bit old of a yamaha but its still a great system gets loud and clear
Ugh you messed with the tone control & set it somewhere other than flat? The very fact that your system includes any form of tone control proves that You, sir, are assuredly not an audiophool! :D
I think you could add a diode from the base to emitter on those output transistors to keep them from frying if there's some problem in the preamp, the anode to the emitter and cathode to the base.
Great fun as usual. If anyone wants to see the effect of fiddling with 1st stage differential amplifier* you can easily download the RCA Solid State Handbook, which is where Harman Kardon pretty much took the complete design. *I gonna keep my mouth shut.
Looks like things are OK. Good drill to replace those twin transistors in the input stage (differential pair) with a matched set. But in this case you're probably alright. If you are "in the field" without o-scope and specs, your trick of comparing the bias setting is OK. This is essentially a "class B" amplifier, with just enough turn-on overlap to avoid crossover or notch distortion that would occur if one output device shuts off entirely before the second one comes on. Your high compliance speaker is a handy tool. With a barely audible background noise or low, low level music playing into the amp, gently push on the cone with your finger, and the back current produced by the voice coil being forced through the magnetic field (speaker becomes microphone) will feed into the amp and cause one and or the other device to shut off. The sound will cut in and out as you gently work the cone in and out. Tweak those pots until that phenomenon just stops. Then let the amp sit idle but operating for a few minutes and check to make sure the outputs are not giving off too much heat. You should be good to go. :)
Make note when you replace the differential transistors they are supposed to be replaced as a matched set, otherwise you can get great offsets on your dc balance but it appears it was matched close enough in your case.
Apparently you have never seen any of the other videos on this channel :) He is a master at getting electronics working again, but as far as exacting measurements or "matching" replacement components are concerned, you will not see that here. All I know is, he is skilled at "real world troubleshooting" and I enjoy the goings on he shares with us.
I would try MJE3055 metal power transistors if it is the driver transistor if NPN try BD131 if PNP BD132, if not the driver then a for NPN low power a BC182L for PNP lower power BC212L, not sure about the double transistors
those are some beautiful transformers and huge caps, i can almost feel the jolt they'd deliver. And arent most higher quality amps using dual circuits and transformers? Also i think you underrated the watts on this huge amp. lol Thanks for sharing, shango !
Shango isnt doing things correctly, he needs to make sure the speakers are bi-wired, it will improve the sound from that 4" driver by 75%, even though some of the best speakers ever made are not bi-wirable, the Steve Hoffman forums know best. he also needs to burn-in that power cable, that will take up to 40 hours.
@@Synthematix No need for lengthy cable burn-in before you can reap ultimate fidelity, there now exists a device called "cable cooker" that automatically does the job for you & can even top up used cables to make sure the electrons are aligned... Add in a few Shakti stones and your 75% improvement becomes 87.269% as proven by customer reviews. (I'm serious, look up cable cooker and read the bumf about "topping up" the burn-in on cables, power/speaker/line and all!)
Lol, some guy contacted me on FB asking for help with hum/buzz or whatever on his "high quality" amplifier, which just uses cheap STK output module ... He also replaced all capacitors with "premium nichicon audio" capacitors, which he most likely got from ebay ... :s
11:55 you forgot to mention that the audiophile person also has to buy gold plated cables and stuff to run it and then ... uhh boy, if he finds out that there are no matching parts in there .... ohhh shit :D
The kind of guys that walk with their pocket open asked to be robbed and scammed. Special CAPS, fuses, sockets, cables, interlocks .. tube rolling .... I was in a vintage audio forum and this people infested it and ruined it talking about 3W tube amps from Leak and Tannoy paper cones with mold. No thanks !!!!!!. Let me alone with my Sansui Receiver. The wolrd of snake oil times 10. PUKE.
What!!! No oxygen free 8ga.silver speaker leads or silver interconnects or gold foil capacitors, WTH HK the quality didn't go in before the name went on did it:-)
![[UNCUT]“ฅนตื่นธรรม”ปะทะ“หมอปลา-ปู่มหามุนี-อั๋นโอกิ”สะเทือนกระทรวงเวทมนตร์ Iคนดังนั่งเคลียร์I10 ตค.67](http://i.ytimg.com/vi/peMD_SAkwNc/mqdefault.jpg)
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Thanks for the plug! I've got alot of repect for someone as persistent at resurrecting things as you. I just don't have that patience
You can get that offset near zero if you've got a matched pair of pnp transistors in that initial stage. Most won't notice the difference with a null offset vs 100mv
rent Pier @ 5 st houses for
+Jordan Pier - A better replacement would have been an actual diff-amp transistor, which is two transistors in one package having five leads (the emitters would be internally tied together). This would also involve removing the other good transistor but the advantages would be that both sections are factory matched and being in the same case assures perfect temperature tracking (this is one reason why amp designers use a diff-amp circuit in higher end units). These transistors hadn't really been introduced when this amplifier was built, so two separate transistors had to do the job.
Shango starts off with self deprecation of his skills on high end gear, yet knocks out the repair as fast as anyone could. Shango is the man.
I liked my 1980's Chevy Citation. One day, 35 years ago, I went outside and it would not start. Checked everything obvious in Shango style and ultimately deduced it had to be the computer. Pulled it out of the glove box and lo and behold, a burnt out trace on the circuit board. Bridged it with a bodge wire, reinstalled it and Voila! It started, proving there is hope for any electronic device. If I were not a ham, I would had been up the creek without a paddle.
Great video. I thoroughly enjoyed following your every step. A wonderful journey to success!
Shango style.....i like that
Shango that's an understatement you do know what you doing your a master electronics repair person who cares about the comments people are saying you do know what you do when doing I wouldn't watch your videos if I wasn't a true fan I wound not be here I support
Jason JJ Cruz - Exactly. Shango is a super genius at repairing anything his magic fingers/hands touch, that’s why i am still here as his channel never disappoints me & I’m not just boasting about him because I’m in madly love with him, just telling it how it truthfully is! He has always surprised us & never failed yet..........Keep it up Shango as we all think you are the bees knees. :)
Rex Truegood - LOL What husband? Or do you mean, EX husband?
Rex Truegood - Hahahaha
Shango, when it comes to repairs, I trust your guesses more than most other people's "facts".
Really tired of fact from the audiphoolery world, the one that listen capc and cables ... no thanks Audio gear is to ENJOY, not to pontify.
Always nice to see a new Shango vid. I'd love to have that amp on my bench. Ugh to those old RCA part numbers before JEDEC (I think it was) assigned standard numbers like the 2N series.
JohnAudioTech My first thought was: why don't you send it to JohnAudioTech for distortion analysis.
Actually, those were branded by RCA to OEM's. JEDEC was in effect, RCA just decided to use unorthodox numbering, just because they could. A lot of Heath amplifiers used RCA transistors, numbered this way.
Nicely built, it looks like a hangover from the tube point to point days.
Another case where I feel smarter than I am after watching a Shango repair video. 😁 Good education as well as repair!
It's going to be a good week, thanks for the video.
Be nice, I owned a Chevy Citation and it served me well. They weren't top end cars but this one drove well and was reliable. The early Citations weren't anything to write home about but the newer ones weren't bad.
Most excellent. The differential amp had already been replace before you opened it up. Originally the diff amp was a single envelope with two transistors (6pins). They are available but very pricey. I did similar to your repair less the two transistors are clued together so they maintain the same heat and balance.
You are very fortunate as the two that I repaired had the diff amp blown which took out all the power amps and a couple diodes.
Thank you for sharing.
Good fix and you rocked Mrs Miller to boot... hey hey.
th-cam.com/video/hWoWH8W3sVo/w-d-xo.html
Man Don,,, where the heck did you find that? lol
I was just thinking about my ' 81 Citation this morning. I got rid of it because of a bad clutch!
And another great repair video.
WOW, you got a nice piece there !!!!!
I love how the only place the 2 channels meet is in the primary of the transformers LOL
2 separate complete mono amps.
OMG! It’s not good when your suffering a bad migraine & Mrs Miller comes on!! Ouch, my sore head. :(
You must never again force Mrs. Miller upon us on a Monday, as it sours the balance of the week, and drives the groundhogs out back completely nutz. That amp is rockin', by the way!
I know it was a big thing not to turn one of those things on without a speaker of a 100 Ohm or so resister across the speaker outputs. For someone who said he didn't know what he was doing you did that quite well. Thanks interesting video.
Wow you learn something everyday. I thought Harman Kardon was a German manufacturer of Electronics
Good to hear Mrs. Miller make a comeback :)
Following a rant about audiophiles with Deadmau5...... priceless. I give Harman credit for the ease of service on this one, everything just pops out for the most part. Makes it real easy to install those "audiophile grade" capacitors. ;)
If those main filters are original, it just blows my mind it even works cuz their notorious for drying out in the 12. Had two of these amps several years ago that were acting funny and new filter caps fixed them right up.
Think those are replacements, they look too new to be the originals.
Good job, Shango! You are better than you think. Great video.
Hey, you got it! Much better than a Chevy Citation!
Those Citations were the automotive version of the disposable lighter
The car that transmission fluid leaked on the manifold igniting the car!
I think you should have replaced the 2nd Q701 transistor too with the same NTE383. These two are supposed to be matched and thermally coupled.
Yes, its differential amplifier and the 2 transistors should be the same. In this case they don't need to be thermally coupled, because them internal current is low. So they only need to be close together, they are heated by ambient heat in case. But look at schematics, originally there should be coupled pair in common case.
it's not mandatory but it's better to make those transistor work in the similar temperature.
Look at the second channel (5:19) - there are also 2 discrete transistors.
Definitely better than a speeding citation....
Neat.. A repair WIN! I'm still learning solid state stuff, so it's all good news.
i never liked those pin connectors, i got an old harman kardon amp from a flea market it looked like new, i serviced and recapped it and gave it to my brother as a gift for xmas(he always wanted one).
it worked great but the pins were loosey goosey so i soldered them, he has had that amp 4 years so far without issue.
I've got a HK 870, from around 1990 i believe. It has a similar pin header which gave me a lot of grief. These amps seem to have been revered back in the day, but my 870 really likes to break down all the time.
I'm going to watch all of the videos on this channel
Yeah I drove a Chevy Citation out of disparate measures. God why did you have to bring that up, I was enjoying the video!
Wow... I admire you getting into this thing. I've been into electonics since around mid-2000s, and one tip: Replacing power transistors: Even if one blew, for stability, replace all of them *of the same batch of manufacture* Dunno really what could happen if you just take out the fried one and replace it with a new one :)
My dad had one of these and a HK preamp. Something was wrong with one of the channels for so many years until it died all together. I wish I would have tried to fix it, but I didn't have the time in college to do that. He said he put it together as a kit (something I'd like to do in the future when the kids get older).
To answer both of your queries: the output Transistors on the Citation 12 are 2N3055s, and the output is 60 Watts/channel RMS, not 35. Be careful with the 2N3055s. They are hand selected at the factory to be able to handle enough current and voltage to produce 60 Watts. Put a garden variety 2N3055 in that amp and it will blow immediately that power is supplied. I used to know the number of a modern replacement transistor that has similar specs but can handle way more voltage and current with impunity, but I haven’t thought about the Citation 12 since the mid eighties and I simply don’t recall.
Mrs. Miller makes my day..Thanks for the ear worm!
The Citation 12 was very popular back in the early 70's. It was rated at 60 watts/channel.
I built a SWTP Universal Tiger in HS. It was based on the Citation 11. The schematic looked VERY familiar. The circuit loved to go into oscillation. The output transistors were MJ802 and MJ4502.
a bit of search of 27722 transistor leads me to audiokarma thread. 2N5087 seems to be the equivalent. also, you'd better replace the feedback side since they work together. another tips, use a bit of thermal paste and bind them using zip tie to get similar temperature on both transistor. by having small temperature difference, the offset will be stabilized even better
I would have added a CESSNA citation .... from what I watch here you love CESSNAs LOL. Great vid sir.
Hi thanks a lot for the very educational video. I would also look at multi-turn encapsulated trimmers for easier biasing and offset regulation. They do not cost much. Kind regards, gino
As always, excellent not just the repair.
But your cool I don`t care what this is repair attitude, just the knowledge of how this should work.
Thanks , keep making these videos, I love watching them.
Please also, keep taking us along for the ride when picking stuff up, or when going to get parts.
I know you have done this, but is just as exciting anyways. And the camping tours is also fun =)
great job. I love dual mono blocks.
Q701 is a differential amp. It needs to be a matched pair.
I think you did a great job on the amp no complaint here I was waiting for your next video to arrive
If it can handle Miss Miller's voice, it can handle anything.
Awesome! I love all Your repair videos thanks
HK Citation 12 is good for about 60 watts a side into 8 ohms, they're from around 1976 or so. Great save, though the diff input pair really oughta be matched you proved that it can be done with watcha got! Often the bias trimmer pot is what kills the outputs, in some designs when it goes open it turns the transistors full on and they burn up along with a bunch of other stuff. Depends on how it's tied in (HK must've done it right).
Excellent fix.
They used to play Mrs. Miller on the local classical music radio station on April 1st...
Mrs. Miller..... YES!
I have some vintage Harman Kardon speakers and they sound GREAT since I turned the bass up a little bit on my yamaha receiver eh its a bit old of a yamaha but its still a great system gets loud and clear
Ugh you messed with the tone control & set it somewhere other than flat? The very fact that your system includes any form of tone control proves that You, sir, are assuredly not an audiophool! :D
Fantastico! Last of the made in U.S.A. and I dint see no Geraniums. Is adjusting the bias politically correct? Great video, great technician.
There are 8 liberals who disliked because the didnt like him adjusting the bias.
At least he adjusted it negative so the little flower germaniums wouldn't wilt. Happy Independence Day and God Bless America!
I think you could add a diode from the base to emitter on those output transistors to keep them from frying if there's some problem in the preamp, the anode to the emitter and cathode to the base.
I think I saw tiny glass diodes across the finals E & C on the transistors themselves & in the schematic as well.
Great fun as usual. If anyone wants to see the effect of fiddling with 1st stage differential amplifier* you can easily download the RCA Solid State Handbook, which is where Harman Kardon pretty much took the complete design.
*I gonna keep my mouth shut.
Don't you need to adjust the offset?
Jordan who's channel. ? Please link his channel...if its worth it . ..ur channel still the best..all in the "voice"
Jordan Pier: th-cam.com/users/jpdylonvideos
Simon Østergaard Jordan Pier is the person Shango was referring to. When you see the subject matter of his videos, you'll know you found him.
Looks like things are OK. Good drill to replace those twin transistors in the input stage (differential pair) with a matched set. But in this case you're probably alright. If you are "in the field" without o-scope and specs, your trick of comparing the bias setting is OK. This is essentially a "class B" amplifier, with just enough turn-on overlap to avoid crossover or notch distortion that would occur if one output device shuts off entirely before the second one comes on. Your high compliance speaker is a handy tool. With a barely audible background noise or low, low level music playing into the amp, gently push on the cone with your finger, and the back current produced by the voice coil being forced through the magnetic field (speaker becomes microphone) will feed into the amp and cause one and or the other device to shut off. The sound will cut in and out as you gently work the cone in and out. Tweak those pots until that phenomenon just stops. Then let the amp sit idle but operating for a few minutes and check to make sure the outputs are not giving off too much heat. You should be good to go. :)
Very interesting repair. Thanks
Wow love the HK gear. But I would expect the boards to be held in somehow?
Are they really made in America?
I had to read that twice...very funny!
thx shango for another video ;-)
Out standing Job
Make note when you replace the differential transistors they are supposed to be replaced as a matched set, otherwise you can get great offsets on your dc balance but it appears it was matched close enough in your case.
Apparently you have never seen any of the other videos on this channel :) He is a master at getting electronics working again, but as far as exacting measurements or "matching" replacement components are concerned, you will not see that here. All I know is, he is skilled at "real world troubleshooting" and I enjoy the goings on he shares with us.
Another good Hi-Fi repair guy is XraytonyB
the cap at the back where the speakers hook up. Is that some kind of backup to protect your speaker?
I would try MJE3055 metal power transistors if it is the driver transistor if NPN try BD131 if PNP BD132, if not the driver then a for NPN low power a BC182L for PNP lower power BC212L, not sure about the double transistors
Great amp!
Blow CR1 or CR2, or one of those .001 caps shorted would do the damage. Bad input transistor and a cracked pot. Who'd a thunk? Good detective work!
those are some beautiful transformers and huge caps, i can almost feel the jolt they'd deliver. And arent most higher quality amps using dual circuits and transformers? Also i think you underrated the watts on this huge amp. lol Thanks for sharing, shango !
Great fix!
Wondering if this has been re-capped yet?
A w e s o me s t u f f, shango you must make sure you use a $500 power cable to get the best out of this amp lmao, totally excellent video!
Don't forget the 99.9% pure copper oxygen free braided speaker wire.
Shango isnt doing things correctly, he needs to make sure the speakers are bi-wired, it will improve the sound from that 4" driver by 75%, even though some of the best speakers ever made are not bi-wirable, the Steve Hoffman forums know best. he also needs to burn-in that power cable, that will take up to 40 hours.
@@Synthematix No need for lengthy cable burn-in before you can reap ultimate fidelity, there now exists a device called "cable cooker" that automatically does the job for you & can even top up used cables to make sure the electrons are aligned... Add in a few Shakti stones and your 75% improvement becomes 87.269% as proven by customer reviews. (I'm serious, look up cable cooker and read the bumf about "topping up" the burn-in on cables, power/speaker/line and all!)
And make sure the power company has used gold plated screws on the transformer at the sub station
Very clean looking design? Just a guess.
its great you are giving it a go
Is it as good as the private jet?
Could you play some Frank Sinatra renderings of Beatles Hits? My favorites are all the Magical Mystery Tour songs.
NEXT TIME YOU TEST AN AMP USE BASS 305 THERE ARE TEST TRACKS FOR THAT
Did you sell it?
A bit of WD40 works wonders on old pots, provided that the resistive traces haven't broken.
Do good from jack door the house vents fine
NIIIIICCCEEE....you ROLLS...SHANGO066
would be interested in buying it if its for sale
60 Watt stereo 120 Watts mono, I love this AMP HOW MUCH..Me Want's..
Lol, some guy contacted me on FB asking for help with hum/buzz or whatever on his "high quality" amplifier, which just uses cheap STK output module ... He also replaced all capacitors with "premium nichicon audio" capacitors, which he most likely got from ebay ... :s
can you repair the harman karden hk670 ?
I would imagine so.
11:55 you forgot to mention that the audiophile person also has to buy gold plated cables and stuff to run it and then ... uhh boy, if he finds out that there are no matching parts in there .... ohhh shit :D
The kind of guys that walk with their pocket open asked to be robbed and scammed. Special CAPS, fuses, sockets, cables, interlocks .. tube rolling .... I was in a vintage audio forum and this people infested it and ruined it talking about 3W tube amps from Leak and Tannoy paper cones with mold. No thanks !!!!!!. Let me alone with my Sansui Receiver. The wolrd of snake oil times 10. PUKE.
Is Harmon/Cardon still in business?
Excuse me Kardon
Yes, it is owned by JBL.
@@frothe42 Thanks
@@garymckee8857 You're welcome!
nice gear
lol, the Chevy Citation.. like it would go fast or something?
If it woiks, it woiks. Sorry channeling Jimmy Durante.
Hey, do you sell these repair jobs, on eBay perhaps?
It’s not in how the pot sounds.its certainly the other aspects that matter 😆
The inside look beautiful, please fix it
Anyone have link to Jordan hifi youtube
1 person is upset because shango didnt burn - in his power cable.
put two 2SA970matched pair
Hey! don't dis the chevy citation. Future Classic! :-/
blow the resistor 10 ohm 1 w
What!!! No oxygen free 8ga.silver speaker leads or silver interconnects or gold foil capacitors, WTH HK the quality didn't go in before the name went on did it:-)
Don't forget the power, you can't just use electricity from the pole outside, you need to condition it.
Norah Jones sounding awesome. Shango, cut the false modesty, you obviously know what you are doing.
Here is Jordan Piers link : th-cam.com/channels/dStlKIQ8xfVPvz3pVEIodw.html
Ive just fixed a bloody solder problem on my 1991 technics power amp here: its a 2 part video th-cam.com/video/EC1akVSnuIc/w-d-xo.html