![TinyBench](/img/default-banner.jpg)
- 17
- 45 233
TinyBench
เข้าร่วมเมื่อ 24 เม.ย. 2007
Audio equipment repair and restorations as well as all audiophile related gear reviews, comparisons experimentations and measurements.
EICO HF-81 6bq5 Vintage Tube Amplifier Restoration
Incredible transformation of an Eico HF-81 vintage tube amplifier from a recycling bin basket of parts to a fully restoresd, fined tuned and absolutely beautifuly looking unit that sounds spectacular.
มุมมอง: 996
วีดีโอ
Sudgen A25 Repair
มุมมอง 1833 หลายเดือนก่อน
Repair of a Sudgen A25 Integrated Amplifier that would not turn on.
Marantz Model 9 EL34 Red Plating Tube Amplifiers Repair & Restoration
มุมมอง 8994 หลายเดือนก่อน
Repair and complete electrical restoration of a pair of Marantz Model 9 tube amplifiers that where redplating.
Eico HF-81 6bq5 Tube Amp Humming Transformer Repair
มุมมอง 1K6 หลายเดือนก่อน
Eico HF81 tube amplifier humming transformer troubleshooting and repair. The cause of the humming was because one of the two tube rectifiers and the first stage filter capacitor where not connected to the rest of the circuit. The unit was operating on one rectifier and no filter capacitor at the very first stage. Upon doing some research, I learned that this amplifier was a kit and apparently h...
Mcintosh C22 Vintage Tube Preamp Motorboating Repair
มุมมอง 9626 หลายเดือนก่อน
Repair of a Mcintosh C22 tube preamplifier making noise like a running motor. The so called motorboating but this one sounded more like a Vespa scooter. The cause of the noise was dirty tube sockets but it also had dirty noisy trimpots. After cleaning the trimpots and tube sockets, the unit was no longer making noise but sounded dull because it need restoration so I could not enjoy a listening ...
Mcintosh Mc2205 Exploding Capacitors Repair & restoration Part 1
มุมมอง 2.2K7 หลายเดือนก่อน
Detailed repair and part one of a Mcintosh Mc2205 restoration.
Mcintosh Mc2205 Exploding Capacitor Repair & Restoration Part 2
มุมมอง 2.2K7 หลายเดือนก่อน
Complete electrical restoration of a Mcintosh Mc2205 stereo power amplifier. Replaced all electrolytic capacitors, replaced thermal grease, cleaned all electrical contacts, adjusted the bias and calibrated the power meters.
Mcintosh Mc2205 Exploding Capacitor Repair & Restoration Part 3
มุมมอง 1.2K7 หลายเดือนก่อน
Replased incandescent lights with LEDs and tested the performance of the amplifier after the full restoration done inpart 2.
Mcintosh Mc2205 Exploding Capacitor Repair and Restoration Part 4
มุมมอง 5397 หลายเดือนก่อน
I this video I show how to repair the blistering of the paint in the back of the the glass front plate of a Mcintosh Mc2205 power amplifier.
Bryston 4B Amplifier Repair
มุมมอง 1K8 หลายเดือนก่อน
Repair and restoration of a 1987 Bryston 4B Professional stereo amplifier not reproducing audio signals on either the left or the right channel. Thank you very much for watching. Please comment, like and subscribe.
Mcintosh C20 Volume Trimpot Replacement And Sound Impression.
มุมมอง 8719 หลายเดือนก่อน
I had to overcome a hurtle and find a solution to make the new assembly fit and function properly because it was electrically identical but it was slighly different mechanically and had to be modified. I had no ideal about to go about it, but then had an idea that worked very well.
Conrad Johnson PV7 Tube Preamplifier Repair
มุมมอง 1.7Kปีที่แล้ว
Repair and testing of a ConradJohnson PV-7 tube preamplifier purchased by a friend in non-working conditions. The previous owner replaced a can capacitor and three out of four points on the PCB where the multi-can cap mounts, used the metal shell of the multi-can cap to connect to ground. The multi-can was replaced with individual caps and the points on the PCV where the multi-can cap shell was...
Krell Duo 300 Stereo Amplifier Repair
มุมมอง 8Kปีที่แล้ว
Insufficient pressure between output transistors and heatsink prevented proper heat transfer. Output transistors overheated and and shorted. The thermal pads melted and stuck to the transistors and heatsink. The left channel shorted transistors and drivers where replaced, each and every semiconductor was checked and all output transistors were re-seated with thermal grease including the ones on...
Bryston 4Be Stereo Amplier Repair Short Version
มุมมอง 1.8Kปีที่แล้ว
BRYSTON 4be Repair Short Version Repair of a Bryston 4Be with blown transistors and damaged PVB
PTM-6150 AMPLIFIER CLICKING RELAY REPAIR & RESTORATION
มุมมอง 11Kปีที่แล้ว
Repair & restoration of a PTM-6150 amplifier with Clicking turn on relay caused by a faulty capacitor in the turn on relay board. I resoldererd the entire relay and output PCBs, replaced all small electrolitic caps and thermal grease.
Great down to earth presentation.What thermal grease/paste did you use?
These amplifiers develop bad dc offset hence blowing tweeters and midranges and transistors. It was fixed in the ST and later models.
@@laszlosokolai2858 Hello teammate! Thank you very much for sharing. I really appreciate it I have a huge favor to ask you, if you haven’t yet, please subscribe. It really helps the channel. There’s so rather simple modification that adds a shrimp pot to adjust the DC offset I usually get it down to near zero by replacing two transistors (differential amplifiers ) with a match set. I think the problem is the old “If it ain’t broken don’t fix it” Thank you very much once again! 🙂🙏💥💥💥
nice work. The model 9s are really nice sounding amps. cleaning off all the old solder and leads on the terminal post boards takes tons of time. Most techs do not want to spend the time to do this since they will not get paid by the customer to do it correctly. VAC-AMPs made re-issues of the Marantz 9s a number of years ago including getting the power and output transformers made by the same company that made the originals. They sound very close to the originals. Also great work keeping the carbon comp resistors in the signal path. They are part of this amps sonic signature.
@@mcgjohn22 Thank you teammate thank you thank you so much! I really appreciate it! Hey, I would really appreciate it if you made me a huge favor and subscribe! It really would help!!! 🙂🙏💥💥💥
Nice tutorial.What is the brand of the desoldering iron you used?
@@markwroblewski6500 Hello teammate! Thank you, thank you very much! I really appreciate it. Don’t hesitate to reach out if I can help. It’s a Hakko. I love it! I guarantee you that this soldering stations are worth every penny. You will never be able to go back to that spring loaded soccer once you get used to these vacuum pumps! Hey, if you haven’t subscribed yet, I would really appreciate it if you did so because it really helps my channel grow. Be well happy and healthy ! 🙂🙏
These are gems that deserve the very best. Yellow Chinese made Illinois Cap films wouldn't have been my choice for coupling caps. NOS mil spec PIO's or current production Arizona Cactus caps would have been perfect. They are not cheap, but then again neither is a pair of Marantz 9's...
@@crooner2007 I agree with you 100% teammate! I put those in temporary until the owner decide which coupling caps he wants to use, and I will then replace them for him. Please watch some of my other videos, restoring my own equipment where I use the military paper and Capacitors that you were referring to. Thank you so much for watching and commenting and I would really appreciate it if you please subscribe . Once again, thank you thank you thank you so much ! 🙂🙏💥💥💥
Oh how I wish my hands were that steady and nimble. Good job!
@@ginocolaianni46 Thank you very much, teammate! You made my day! If you haven’t subscribed please do so I would really appreciate it because it really helps my channel! 🙂🙏💥💥💥
So what are your overall thoughts on the pv7 ? I also have a pv7 with a dynaco st 70 and a pair of klipschorns
Hello Michael! I love the PV7! Sounds really sweet to me ! And you sure have a sweet system! It must sound incredible! Thank you so much for watching my video and commenting and if you haven’t, please subscribe. I would really appreciate it. 🙂🙏💥💥💥
Done and also liked
@@michaeldelorenzo6827 🙂🙏💥💥💥
@@Tinybench now I'm just waiting for my thorens td 125 to come home from service @ Vinyl Nirvana
Saludos. Soy de chile. Excelente. Macintosh 2205 Tengo uno igual.. muy buenos videos. Gracias
Muchísimas gracias Hector! Me alegra mucho que te haya gustado. Sí por favor serías tan amable de suscribirte al canal, me ayudaría inmensamente! 🙂🙏💥💥💥
Nice🎉
Thank you, thank you thank you so much! I would really appreciate it if you could please subscribe because it would really help. Once again, thank you thank you thank you so much!🙂🙏💥💥💥
Where are you located? My channel went out on my bryston!
Hello teammate! I’m in Miami.
@@Tinybenchthank you for the SWIFT response. I’m a few hours away in Jacksonville. What would you charge for a repair like this? I’ll make the trip for sure.
@@SOUNDCONTROLFLA It’s probably the output transistors. That’s what it is most of the times, but sometimes it can be something like a diode. You can also be just a fuse which you can check yourself very easily. It’s really hard to say without seeing it in person but an average it’s around $300 including parts. If you really like the Amplifier, I would be more inclined to just do a full restoration and that way you know the amplifier will last you if you decades. The amplifiers are rather simply, and it would just be a matter of replacing all the electrolytic capacitors, thermal grease, and any resistors out of value. Thank you very much and by the way, if you haven’t subscribe to my channel, I would really appreciate it if you do so because it would really help . Thank you thank you thank you so much !🙂🙏 And by the way within the next couple of days, I am going to do a full restoration on a Bryston 4B where I will show people exactly how to do it.
@@Tinybench thank you for your response
@@Tinybench what's the rate for the full restoration?
Excellent work on your repair, but Krell build quality left when Dan Agostino was forced out it looks cheaply made to 90's Krell...smh.
I have the same amp. This thing sounds amazing. But I have a problem with it. I just replaced the outputs on the left channel which were dead. I checked everything around and everything is good. I managed to find original Hitachi outputs which are very expensive. I just tested it and they are still short. By testing it on the variac the DC comes out of the left channel. I also believe that the on/off switch is short because it is always powered.
Hello! Check all your diodes in the output stage. Also check your output drivers. Are you sure the old devices were shorted? And by the way, next time don’t go hunting for a specific transistor. Just get a modern equivalent from digikey or mouser. Regarding the switch, there should not be voltage going through the switch unless the separation capacitor across the switch is shorted. Or maybe the switch is stuck in the close position. If that was the case, you can probably take the switch apart, clean it and put it back together. Thank you for watching my video liking subscribing and commenting and let me know if you’re able to get it fixed. By the way, if you haven’t subscribed, I would really appreciate it if you do so because it would really help. 🙂🙏
@@Tinybench Thank you so much. I check for this. I subscribe to your channel. Have a nice day!
I have a 4 b with one channel not total out but very staticy but has the square transformer
Hello! I would start by checking all the resistors and replacing the electrolytic capacitors. Keep me posted! I hope you can fix it! Thank you for liking and if you haven’t subscribed, please do so, and I would really appreciate it because it will help me immensely. 🙂🙏
Great vids and many thanks. My 2205 has one channel where the red limit light is on. But still have sound output with no audible distortion/hum. Any thoughts on what components to swap out?
So… Why didn’t you just replace those crappy caps while you were at it? They will be the next thing to fail…
Hello! Thank you very much for watching liking commenting and subscribing. Please let me know which crappy cups you are referring to . I quite frankly don’t remember. It’s a relatively new unit. Literally brand new in the box.
sharp wire cutters work well taking off leads
fuse holders are wrong orange drop don't sound good in these amps
I agree with you 100% Before I did the restoration, I listened to the unit with the orange drop capacitors, and it sounded like the lo pass filter was engaged! Absolutely terrible with no clarity ! 🙂🙏
good amp I've fix a few
They definitely are good amps, teammate! When my friend heard him, he purchased a pair !!!!😂 I had never even seen them before I had them in my tiny bench! I thought that you subscribed thank you thank you thank you so much !!!! I subscribed to your channel as well ! 🙂🙏💥💥💥
Ive fixed few of theses i do all the warranty work for this company
Hello hello! Thank you very much for watching liking and commenting and if you haven’t, please subscribe. I would really appreciate it!!! I am honored to have you a professional watch my video!!!! I am flattered !!! thank you thank you thank you so much!!!! 🙂🙏💥💥💥
The black cat caps go bad
Hello teammate! Thank you very much for letting me know!!!! I personally don’t trust any old capacitor like that and I don’t have an issue making units sound good with capacitors available in the market today. And that’s without spending a fortune!!! 🙂🙏
@@Tinybench I agree with you 100% I build my own tube amplifiers,with good caps available from Mouser or Digikey,some people that don't understand how electronics work believe the hype too much.
This amp from Mr D agastinos time
Hello teammate! I didn’t know that. Thank you for letting me know and thank you very much for watching liking and commenting. I really appreciate it and if you haven’t please subscribe it would really help the channel. thank you thank you thank you so much.
Have you ever worked on the krell 250 a before.??
Hello teammate! I have not! That was my first Krell. 🙂🙏
Your skill is amazing
Hello teammate! I consider myself a beginner and an apprentice who learns something every day, but I do have a driving passion and I really enjoy the process! Thank you thank you thank you so much you made my day. Also, thank you very much for watching the video liking and commenting and if you haven’t subscribe, please do so because it would really help my channel grow!
Thanks for the video now it's fixed properly what were they thinking at the factory have a great day
Hello teammate! Thank you very much for watching liking and commenting. If you haven’t please subscribe because it helps the channel immensely. Once again, thank you thank you thank you very much! 🙂🙏
The cost of output transistors would bankrupt you.
Hello teammate! Thank you very much for watching liking and commenting. If you haven’t, please subscribe. It would help immensely. You better remember correctly the Alans sisters were about $10 each. The good thing is that with the thermal paste and the tighten hardware they last forever! Thank you very much once again! 🙂🙏
Did you connect the 0.1uF capacitors linking the anode to the first grid correctly (outer foil)? The yellow stripe on the original Pyramid capacitors does not indicate the outer foil.
Looks like a cheap computer case
Hello teammate! Thank you very much for watching liking commenting. I really appreciate it. If you haven’t please subscribe it would really help me. When it comes to Engineering, sometimes this things happen. To credit the Amplifier did sound beautiful and with the thermal paste, it should last a long time because the transistors will be able to dissipate heat properly. Teammate once again, thank you very much. I really appreciate it. 🙂🙏
Nice job. Where did you get the pot from? Thank you.
Hello teammate! Thank you for watching liking and commenting. I really appreciate it and if you haven’t please subscribe because it would really help me. That unit belongs to my friend Steve and he brought me the trim pot to replace. I will ask him if he remembers where he got it. Just so you know, the original trim pots can be rebuilt if a new one cannot be obtained but it is a little bit of a mission. Basically one can purchase tripods of the same value and replace the wipers as many of them are interchangeable. But like I said, it can be tricky as some of these trim pots are linear and some are logarithmic so everything must be matched. There’s actually four wipers on each of the units because the volume is changed at two different stages. And when you do fix it, just stop using that power switch because as I mentioned in the video, the tour applied ends up, ruining the structural integrity. Once again thank you very much! 🙂🙏
When I saw those nice beefy output transformers I figured this would turn out to be a good one. Were you using Nichicon capacitors for cathode bypass?
Yes, I was. First I use polar auto Capacitors. I put together adding up to 56 uf. I then change to one47 µF bipolar audio capacitor also from Nichicon which measured exactly 50.6 uf. That one made a dramatic difference. Thank you for watching liking and commenting. If you haven’t yet, please please please subscribe. Thank you once again ! 🙂🙏
Hello teammate! That’s right. The unit have really good transformers. Those were indeed Nichicon audio Capacitors. The green one is a bipolar audio capacitor. Thank you very much for watching liking and commenting and if you still haven’t, please subscribe. I would really appreciate it because it really helps. Thank you very much once again!
Very detailed ......but NOT bright ! ..........right as should be .........;lacking in quite a lot of amplifiers or rolled off to hide the problems...... Have a nice day. ( was quite a job ! )
Hello teammate! Once again, thank you thank you thank you so much for watching liking and commenting. I really appreciate it and if you haven’t, please subscribe. Thank you very much once again!
@@Tinybench Always a pleasure !
Hello! I’m enjoying your channel. Happy to have found it! Is the arcing suppressor cap (near the end of video) also a 0.01uF like in your Eico vid?
Hello team mate! Thank you so much! If you haven’t, please subscribe. I would really appreciate it. Yes, that was also the same value if I remember correctly. I use between 01 uf and .03 uf on larger amplifiers. I use failproof capacitors from WIMA that are guaranteed to never short. Once again, thank you very much.
It made me happy to see your rework powering horns.
It made me happy to see that you left a comment. If you haven’t, please subscribe, I would really appreciate as it would help the channel immensely. The HF 81 can power, the clips horns rather easily! Thank you once again teammate.
Okay boss another question the .15 ohm 5 watt resistors in the output transistors on those big heat sinks. Have some way our of specs but a I can find are wirewound resistors now I have read that you shouldnt use wirewounds on common emitter amps. what are your thoughts, Mc2205
Hello teammate! Those are wirewound resistors. Is that your question? And are you sure that those are out of specs because I have never seen those get out of specs. Why won’t resistors are usually spot on? Make sure nothing is affecting your measurements. Good luck!
@@Tinybench I have one that tested over 9 0hms I know thats weird but the meter is accurate so I have no explanation.
@@shaknit 9 Ohms??? WTF!!!! Lift one leg off the PCB and then measure it. I really think something else is throwing off the measurements. By lifting one leg of the circuit. It will isolate the resistor, and I bet it will measure spot on. Teammate if you haven’t, please subscribe. I would really appreciate it. Thank you so much.
These are spectacular amplifier. Nice find!
Thank you very much teammate! It is spectacular indeed! 🙂🙏
This one of the best integrated tube amp ever. I hope you will enjoy. I have few eico, 2 HF-60 and the st-70 with the tuner and mpx. The last one is a bit noisy, too much front end gain, but I love it. Your (what I can see) mc250, is also my favourite solid state amplifier. The semi push pull and output transformer have a lot caractère and I that's what I like. I've rebuild and restored many amplifiers, juke-box, and what you said about the ground is very important, twisting heater wires closely together and putting those near the chassis really affect the hum as well. Nice restoration.
Hello team and thank you very much for watching my video liking, subscribing and commenting!!! I noticed that this units rely on the hardware to ground onto the unit. Overtime corrosion can occur, even though it is not visible. Cleaning under the hardware with a wire brush may help reduce noise. I am truly enjoying the Amplifier! This one has a special place in my heart !!! It’s hard to believe that he was literally a basket of metal parts!
@@TinybenchI would enjoy it too. These older eico unit have really good output transformer. You won't find such quality in modern équipement unless you pay multiple thousands. My HF-60 have peerless transformer and there's a good chance those in your unit are peerless too. Incredible. You can determine the foil side of the caps that are not marked with a oscilloscope. Just connect one side of cap to the positive of the oscillloscope, and hold the body of the cap in your hands, Do it with both side, the side with the most deflection is the foil side. I'm an older electronic technician and since 20 years, since consumer electronic isn't repairable anymore, I restore and rebuild vintage audio equipment.
8:50 - You are trying way too hard to "find something" here. The amplifier works and doesn't seem to have any significant issues. That's as good as it gets.
Hello teammate! Thank you very much for watching my video liking and commenting. Sorry I don’t understand what are you referring to. What is it that I am trying too hard to do in your opinion? What doesn’t seem to have any significant issues? Once again, thank you very much teammate!
@@Tinybench You're trying to describe the sound of the amplifier but that's something a working amp does not have. You probably need to do some ABX listening tests to understand this better.
@@marstedt I understand now! That was my personal subjective impression of how the amplifier sounds, and it should be taken with a grain of salt. Amplifier has a very distinctive sound to me and different properties. I was just trying to describe my subjective experience. In my opinion, A/B comparisons are great for comparing two products. in this particular case, I was not comparing the unit to another one in particular, but how it sounds to me in general. Teammate once again thank you thank you thank you so much. I really appreciate it. 🙂🙏
I have 4 telefunken 7189's from 1962 waiting for an amp someday.
thank you very much for watching liking and commenting teammate! Good things come for those who wait but not for those who wait too long! Lol Grab one on eBay. Let me know if you need help picking one. The Harman Kardon A230 is also awesome and cheaper! And there’s a few other ones also very good!!! 😊 👍
@@Tinybench I usually convert amps like this to guitar use. I have a few PA and Hi Fi amps ready for the conversion. I will be beefing up a Magnavox Phono Console from 1961 shortly. It uses 4 EL84's but I will use those 7189's in it since a 7189 is a beefed up EL84. Cheers.
@@skullheadwater9839 Hello team, mate! I heard all other people converting the them to guitar amplifiers with amazing results and a really good tone! I also use the 7189 tube. My favorite. 🙂🙏
Fantastic Transformation! I absolutely love the way my HF-81 sounds after you did those same upgrades to mine. Cheers!
Hello Jamey! Thank you so much! Thank you for the trimpot!!! 😊🙏💥💥💥
Oh, I love it when it turns out to be a switch or a wire or a fuse! And what a neat rack made out of scrap! Pretty much everything in my listening area is made of scrap!
Hello teammate! Thank you thank you thank you so much!!! The funny thing is that that wire was exactly where it was supposed to be, and appeared to be making contact !!!! 😂
You describe exactly how a good tube amplifier can sound.........And the 6BQ5 ( EL84 nos ) is considerd as the 300B of the poor ............ Modern tube amplifiers ( not all ) often do NOT sound nothing like those.... Ashonishing resurection ...........like a reanimation of a human .... It was a blessing tohave a working unit as a reference ... Kind regards
Hello teammate! Thank you so much for watching liking and commenting. I really appreciate it. It is hard to believe that it is the same unit and it is also hard to believe that can sound so good! 🙂🙏
Yeah, these older 6BQ5 unit did have a really good sound. The last one I've restored for my client was a heathkit A-151. It has ultra linear transformer with a grill tap. It sounded crazy good.
@@SurnaturalM Hello teammate! Thank you very much. I’ll be on the lookout for one of those on eBay.
Today there's a re-issue of the Musical Fidelity A1 whitch does and sound somewhat similar and musical.......
I took a look at it. The inside is totally different. Quite beefier and a lot more complex.
Indeed , it was and is still musical ..something that lacks in some very expensive new high end gear.... When I look at a composition of flowers I don't see the very details of every flower but is see the beauty of the whole.......
Hello again, teammate and thank you very much for watching my video liking and commenting! I really appreciate it! Some some systems can have perfect measurements and hyper clarity and yet have no musicality at all. I rather have a smooth engaging sound that will get my feet tapping. Some people are into measurements, but we are more into listening with our human ears !!! 🙂🙏💥💥💥
Hello , from a team mate ...............woaw a Sugdebn 25 ...........brings back old souveniers ! Indeed one of the only old Class A amplifiers out of the UK...........still on the market today... These were manufactured in a quite artisanal way ... Thank you .
Can you restore my Mac 2205 amp it's working so maybe wait till I have a problem where are you located so maybe drive it over to you it's a beast
Hello teammate! I am in Miami Florida. How about you? It’s never a good idea to wait until the unit goes bad due to the potential damaged involved. You could end up having to rebuild a burnt PCB, having to replace and match transistors, rectifiers, etc, and you could even damage a transformer which would be extremely difficult or even impossible to replace. It’s always better to practice preventive maintenance. There’s also quite a dramatic improvement in sound quality when these units are restored using certain capacitors. 🙂🙏
Excellent work on a legend of an amp
Thank you very much teammate! 🙂🙏
Very nice video! I own an Hf-81 and is sonic bliss. One question though, is it a reason why you removed the preamp tube shields? I see also that two of the 12ax7 have rubber rings and in the “original form” they don’t even have metallic shields. Thanks !
Hello teammate! Thank you for watching my video! I removed the shield temporarily while I was working on the unit. I put them back on after because they shield, electromagnetic noise. The rubber rings are for microphonic. They prevent vibrations from making the glass vibrate. I personally don’t like to use those unless necessary because they interfere with free convection, which is when hot air rises and draws cool air in. Like a hot air balloon, air in contact with the glass races and creates an earth flow that helps the tube dissipate heat. Therefore, I would only use it if I have a problem with microphonic in a tube. Microphonics is when mechanical vibrations of the tube can be heard coming out of the speakers. Please be on the lookout. I am in the process of editing and shortly posting a new basket case HF 81 video.🙂🙏
@@Tinybench thank you very much for the thorough answer! Looking forward to watching that next video :)
I wound up saving a couple McIntosh MC1502 amps from the curbside on their way to the dump. They were all hacked together like they'd been worked on by a complete novice much like the Marantz amps you worked on in this video. Almost every single tube was blown because the heater voltage was way too high. Someone had replaced the rectifier tube with a bridge rectifier without accounting for the extra power. It was expensive to replace them but worth it. After replacing most of the components they turned out to be some of the cleanest sounding amps I've ever heard.
Wait a minute teammate I am dumbfounded. Are you sure you got the right model number the MC 1502 is the new 150 W x 2 tube amplifier for Mcintosh which cost $11,000. Regardless of the model number, I don’t understand how someone can throw away a Macintosh Amplifier. I found a fisher, 500 C on a dumpster myself. I’ll dumpster dive any day for an amplifier lol. On a different note, when I see horrible work like that, I think that is not a matter of knowledge, but a matter of having the desire to do a good job. I consider myself a novice in the process of learning something new every day and the reason why I started working on my own equipment was because the professionals in my city, which is Miami are absolutely horrible butchers! Thank you very much for watching my videos, and for sharing your experience. I really appreciate it! 🙂🙏
If i messed up one post I would have stopped and adjusted my heatgun, the previous person truly butchered these, made me sick
Hello teammate! Thank you very much for watching my! At least we gave the units some well-deserved TLC!!!
My hat's off to anyone possessing the patience and skill to revive electronics of this caliber. Bravo!
Hello teammate! I want you to know that you made my day with your comment! Thank you thank you thank you so much!!!😊
Finaly someone who respects the sound of the amplifier ...........Carbon resistors , I use them also when restoring those amplifiers , they are NOT inductive ! ....and besides critics they sound GOOD ! Many times I serviced vintage amplifiers restored by technicians ........when the owner complained the sound was gone ! Nice job !!! Kind regards
I thought carbon composition resistors were noisy ?
Thank you, thank you thank you so much! I really appreciate your comment. You made my day teammate.🙂🙏
@@Lyndalewinder they can be noisy but they seem to sound good. I only use them in the signal path. 🙂🙏