McIntosh MX110 And Dynaco ST-70. Vintage Tube Preamp Tuner Amplifier Repair Restoration Testing.

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This video shows the repair and restoration of both a McIntosh MX110 Vacuum Tube Preamplifier/Tuner and a Dynaco ST-70 Vacuum Tube Amplifier. This all vacuum tube McIntosh MX-110 is a wonderful sounding Preamp/Tuner. All of the coupling capacitors were replaced as well as the electrolytic capacitors. The Dynaco ST-70 is also a really good sounding vacuum tube power amplifier. When I purchased the ST-70 it was non-functioning. After restoring both the MX-110 and the ST-70 they truly make beautiful music together.
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Пікірлер: 51

@bernardjenkins1630 4 жыл бұрын

I had an MX110 back in the day. I loved it. It needed some tubes and I removed it from my system. My wife found it and sold it at a yard sale. I never asked what she got for it. Broke my heart.

@cowboyfrankspersonalvideos8869 4 жыл бұрын

My father bought the Dinakit version of the ST-70 sometime around 1960. (You seem to be missing the outer case) He had very little money at the time so had to get the kit. A couple of years later he replaced his older Fisher tuner with the Dinakit version along with a Dinakit preamp. He built his own speaker cabinet following Electrovoice's "Empire" cabinet plans (Rear loaded folded corner horn) with an Elecrovoice 15-TRX speaker. He had to wait about 3 years before he could afford to buy a second speaker. Then later he added Electrovoice's external tweeter and mid-range horns. That was a sweet system. We had a ham radio operator who lived in a house about 1000 feet away. At one point he did something to his transmitter which caused our amplifier to pick up his signal. The audio was so clear it sounded like the ham guy was right in the room with us. To begin with he was telling us we had something that wasn't right. Nice guy and tried to help but... Took about a month before he figured out he had done something wrong and fixed his transmitter.

@wayneque2101 4 жыл бұрын

Wonderful, I have vintage Macintosh to , I purchased in 1986. It still sounds wonderful. I will add to it. And get what ever it wants. One of the best purchases I ever bought. 😃🔈🔉🔊🔉🔊🎵🎶🎶🎶🎶🎵♾⚖️

@nparbs 4 жыл бұрын

You have an amazing collection! Thanks for all the awesome videos!

@sandraledger2612 4 жыл бұрын

That is a beautiful MX-110 !

@wakjob961 4 жыл бұрын

Wow, no static between stations while tuning...that's awesome!

@NateEll 4 жыл бұрын

No, that’s just a properly operating mute circuit

@AudioElectronicsChicago 4 жыл бұрын

rare beauty and in mint shape

@1joshword 2 жыл бұрын

Nice to see this thanks for sharing

@vintageaudioaddict 2 жыл бұрын

Glad you enjoyed it

@5argetech56 4 жыл бұрын

That McIntosh belongs in my den....❤❤❤

@randommemories19 4 жыл бұрын

Nice job, nice video! That Mac looks incredible. I just bought my first vintage integrated amp, a Pioneer SX-450 and I absolutely love it.

@kowaltoboggan Жыл бұрын

Very informative! Thank you for making time to produce this video. Will check out your other vids and look forward to other info you are willing to share! Yes, just subscribed, too.

@JuanLega 4 жыл бұрын

The VTA ST70 is a beast.

@nonlineditor 2 жыл бұрын

I had a Z model MX-110. Recapped it and sold it after enjoying it for many years. Would love to have visitation rights again.

@MrGonzo4000 4 жыл бұрын

Great enjoyable video well said ..I love anything MCINTOSH.....

@audiophool864 4 жыл бұрын

Mx110 is a classic. I had an older version but sadly sold it. I missed it so much I bought a MR 78. Still the MX110 had a beautiful sound especially in FM stereo. Mac made some great tuners. My friend had a dynaco stereo 70, nice mids but light in the bass. In my experience most el34 based tube amps are. Nonetheless for the money it cant be beat.

@2visiondigital Жыл бұрын

One of the stupidest things I ever did was drop the Dynaco and preamp at the thrift store. At the time I thought SS was the way to go and tubes were the past. I rue the day.

@5argetech56 4 жыл бұрын

Put that dynaco st-70 paired with some good Klipsch horns unbelievable Bass. Never underestimate the efficiency of the bass reflex or folded horn.

@Carl-bd1rf 4 жыл бұрын

Awesome collection!

@venturarodriguezvallejo9777 4 жыл бұрын

You have good taste for audio gear, indeed!

@Jerry-kl8ul 2 жыл бұрын

Nice overview of these two pieces of equipment. I just picked up an older MX110 and searching the web for restoration info. Sad mine does not have the pan locks.

@vintageaudioaddict 2 жыл бұрын

Thank you very much. I'm amazed at both of these pieces of equipment every time I listen to them. Good luck with your MX-110. I think you will love it.

@RealHIFIHelp 3 жыл бұрын

Interesting gear.

@jimcatanzaro7808 Жыл бұрын

I like the st-70 but i prefer HHSCOTT fully integrated amplifiers It’s very hard to find the correct preamp for a regular power amplifier some are good for some amps some don’t help the amp but work better on others

@donaldheitger6731 4 жыл бұрын

Beautiful

@psychicsurprises748 4 жыл бұрын

Nice! Passion!

@joeypolanco8754 4 жыл бұрын

There's a couple McIntosh MX110 for sale in my area,$2,000 dollars plus.

@venturarodriguezvallejo9777 4 жыл бұрын

Vintage???

@robodummyandy152 2 жыл бұрын

Can you post the name of the green LED bulbs? Looks great. I just got one and it’s really dim.

@wolneycampanha8555 4 жыл бұрын

"LIKE" Felicidade imensa em ver 1 desses!!! Parabéns pelo canal, parabéns pelo canal e pelo presente!!! Muito bonito mesmo...

@jeffjohnson814 4 жыл бұрын

Be true to your ears. lot of people seem to forget this

@aussie8114 4 жыл бұрын

Stay safe 😷

@JAZZMAN72762 4 жыл бұрын

You are an amazing tech,too bad you don't have a business,you would do well repairing equipment for other collectors.

@p.melvinshyturtle3722 Жыл бұрын

My stoner cousins got the amp. Can i plug my MX110 into my home stereo to test it? Thanks.

@mauriceguillory8992 3 жыл бұрын

Great Video! Are you going to release a video on the 110 Restoration? Thanks!

@ciffgatlin8890 2 жыл бұрын

I would like to add the green LEDs as you did. Can you directly replace the existing bulbs with a green LED substitute? Is there a specific color you used? Thanks

@davidnguyen5028 2 жыл бұрын

350,000 ST70’s that is nothing comparing to Technics SL1200 turntables, over 1 million were made.

@davidnguyen5028 2 жыл бұрын

Only 17 vacuum tubes.

@editorjuno 4 жыл бұрын

The MX110's performance holds up very well going by modern criteria, the ST-70 not so much. www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-dynaco-st-70.7224/

@gadjet7 4 жыл бұрын

Do you have a store to sell sound equipment? Great video

@GIBKEL 5 ай бұрын

How does the phonostage sound with MM cartridge?

@vintageaudioaddict 5 ай бұрын

I think it sounds good for a 1960's preamp.

@GIBKEL 5 ай бұрын

@@vintageaudioaddict -I have a Vincent SV 226MKII which is a powerful hybrid integrated with no phonostage. Has 3x12AX7’s which gives some tube color in preamp but I’m always curious about going all in someday with a tube preamp /separate where I’m able to eq with a bit more sensitivity as records are all over the map depending on the trends of the day when they were made. Can’t listen to digital….cds occasionally but I’ve never tried a DAC. Autoimmune disease has made my ears so sensitive although hearing is great. I still like to push the volume but can’t stand the 1 dimensional wall of digital sound stridency. Loses the image and subtleties. Not sure where to start down a path like this? Appreciate your work and showcase. Would you use a separate more modern tube phonostage over the internal? I have one of those on order but it will be another year. Music/sound is my happy safe place and it’s been that way since I can remember as the early 70’s was a turbulent time for me and music was my good feeling endorphin rush.

@billfranklin5772 4 жыл бұрын

My ST 70 is still in pieces. How did you get the chassis so clean?

@docowensde 4 жыл бұрын

Sir, I am a New subscriber and really enjoy your channel. If at all possible, I would Love to purchase your McIntosh MX110 Z Pre AmpTuner, Marantz 2385 Receiver and Marantz 2500 Receiver. I am a Very picky collector and your quality is what I collect. As they say, Name Your Price. Again, I would really enjoy adding these pieces to my collection. Thank You.

@FluxCondenser 4 жыл бұрын

Wonderful amp, love mine. It tended to blow fuses though so I replaced the rectifier with a solid state Weber Copper Cap. Works great as you can see in this video: kzfaq.info/get/bejne/mbJ5grpjnbjciKM.html I also use it with a McIntosh preamp.