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marantz 2270

  1. AngelAT

    Marantz 2270 Power Amp prblem

    Dear all, I have been working on the power amps of my 2270. Both power amps were taken out of the unit. Replaced the output transistors h001-h004, h758, h759, h751 and the two electrolytic caps - c759 and c760. Idle current and dc-offset adjusted. Then both power amps returned into the unit...
  2. Super Noob

    Project: Marantz 2270

    https://drive.google.com/file/d/16I55F1d64iaTnUjbR8JLqRBnqPeWSp2d/view?usp=sharing (build details - list) Completed this rebuild a few months back... just getting around to sharing the process (before I am too far away from it). Not the easiest unit I have rebuilt / restored for sure. Not...
    • Super Noob
    • Thread
    • 2270 cap list marantz marantz 2270 rebuild recap recap list
    • Replies: 28
    • Forum: Marantz Audio
  3. goldswimmerb

    Thrift store 2270

    Hey guys, so by a stroke of luck I found a 2270 at a thrift store. It seems to be properly biased and the DC output is minimal, however I wanted a second opinion here. I am planning to recap it since the capacitors all appear original, but looking at it these output transistors definitely are...
  4. Jelcke

    Marantz 2270 low freq roll off on one channel

    Hello, I am working on a 2270. I recapped the Power supply and replaced output transistors on R-ch. After checking freq response I get low frequency roll off 20-300Hz on one channel. The issue is already in the pre-amp output so I recapped the tone control board (400) and still no improvement...
  5. jFF_Bulbo

    MARANTZ 2270. HELP

    Hello I recently tried to recap tonee board P450. Once i finished, the left channel sounds low and dirty. Unit was working fine before i Recap, so, i have done something wrong. To replace capacitors i installed MPK caps With Tha same values. I resolder and Soublette checked my work. Before...
    • jFF_Bulbo
    • Thread
    • help marantz marantz 2270 recap restore vintage
    • Replies: 5
    • Forum: Marantz Audio
  6. TellMeWhy

    Marantz 2270 Bass rumble

    Dear all, My 2270 has a funny quirk whereby for the first minute or so after cold start up, any adjustment of the Bass level causes a strong subsonic rumble. After that the bass adjustment is fine, and I hear no issues with the sound... There is also bass rumble when the Low Filter is engaged...
  7. jFF_Bulbo

    Marantz 2270 with AM radio problem.

    I have 2270, a technician here in Mexico repaired it and it sound amazing. Many new pieces installed The only problem is the Am section, FM is working nice. The station from 540 to 990 kHZ cant be syntonized. Technician couldn't fix it. He cleaned the air capacitor from AM and the FM one, he...
    • jFF_Bulbo
    • Thread
    • am fix help marantz marantz 2270 radio receiver repair tuner vintage
    • Replies: 5
    • Forum: Marantz Audio
  8. StoryMe

    "I've made a terrible mistake" - Gob

    Hangs his head and sighs.... I messed up. I needed to clean the knobs on a Marantz 2270 that I'd picked up and was refurbing a bit before putting into use. New bulbs, new velum, new power switch, cleaned pots. I was learning a bit as I went and had watched a youtube video suggesting that I soak...
  9. Gumbee

    Save new family members

    Today I welcome my first Marantz and Sansui receivers to my family (growing addiction to vintage audio) Sansui 7070 and Marantz 2270.
  10. TellMeWhy

    Why does my Thorens TD160 turntable sound worse than Spotify?

    Hi folks, after a bit of general advice here. I have in recent years brought back into service a THORENS TD160 MK1 turntable that I've had for ages but stopped bothering with vinyl some years ago. Like so many others, and with a decent library of records, I started to get back into it, but so...
    • TellMeWhy
    • Thread
    • marantz 2270 nagaoka mp-110 phono pre-amp thorens td160 vinyl
    • Replies: 74
    • Forum: Turntables
  11. gregmcm

    Can You Say 'Lucky' - How did I do?

    Just had to share this bit of luck. Been after a friend of mine for a long time to part with a 1070 he has so he knows my interest in Marantz. Last week he tells me he has an old friend who has a Marantz for sale. A couple of emails later we arrange to meet at his place 45 minutes away and today...
    • gregmcm
    • Thread
    • marantz 2270 marantz 2275 marantz 6300
    • Replies: 52
    • Forum: Marantz Audio
  12. L

    AR-3As: Marantz 2270, 2250 or Pioneer SX-850 Receiver?

    Have a pair of AR-3a speakers for '69 that have been totally rehabbed, top to bottom, inside and out. Looking at a Marantz 2270 or 2250 or a Pioneer SX-850. One thing maybe worth noting is the system will play in an open, large room with 40ft tall ceilings and glass windows along one side...
    • lbella22
    • Thread
    • ar 3a marantz 2270 pioneer sx-850
    • Replies: 50
    • Forum: Speakers
  13. Zach Nelson

    Marantz 4270 input

    I am considering buying a Marantz 4270 from a local friend. He did a full restoration on it. I am new to the Marantz world. Will this be a good 2 channel experience. I understand that it was built with the Quad system as its highlight. Just looking for experienced opinion. I've heard it is...
  14. PhilInAudio

    Marantz 2270 Power Amplifier Board Parts BOM

    I am in the process of fully restoring a Marantz 2270 receiver that I've owned for almost 8 years. Restoration is not new to me. I have done restorations before on several stereo components, but never a Marantz receiver. This is my first! (I did restore a Marantz 250M power amplifier which...
    • PhilInAudio
    • Thread
    • marantz marantz 2270 marantz 2270 bom marantz 2270 fix marantz 2270 parts marantz 2270 power amp board marantz 2270 rebuild marantz 2270 repair marantz 2270 restoration marantz 2270 restore
    • Replies: 43
    • Forum: Marantz Audio
  15. TellMeWhy

    Marantz 2270 uneven phono sound....

    Dear All, I have a recently required 2270 that has been "almost entirely recapped" by it's previous owner, who claimed to be an electronic tech. Certainly the main power caps are indeed new, I didn't take it apart in detail to find out more.... On line and tape inputs (incl digital sources) it...
    • TellMeWhy
    • Thread
    • marantz 2270 nagaoka mp110 phono board recapping thorens td160
    • Replies: 2
    • Forum: Marantz Audio
  16. stupidhead

    digital audio connection issue from Panasonic

    Hi folks. Don't often post in this forum but now I have a question. We have been doing a bit of remodeling and I have run all necessary wires/connections to television from a remote spot, about a 30' run. I have a Panasonic TC P50ST60 Plasma HDTV and have run a optical digital cable from tv to a...
  17. nickdinatale

    Caught the vintage bug - Marantz 2270 or Pioneer SX?

    So about four months ago, I really started to catch the bug that is the vintage audio world. At the time, I bought myself a pair of Boston Acoustics A70 II's and a Marantz SR-2000. I was super happy with those for about an entire month, then I started to read AK and everything went downhill (not...
  18. TellMeWhy

    Marantz 2270 on a 3.5 ohm load

    What does anyone think? Safe to run 2 sets of speakers (8 ohm and 4-6 ohm) on a recapped 2270? Results in a 2.6 - 3.4 ohm load.... Would be only at very moderate volume for shortish periods... Safe or not?
  19. DCRand

    Marantz Audio riches to McIntosh / Nakamichi riches, what to do???

    Following is what I just posted in the new member thread: So, 10 or so years ago my Dad, now 83, gave me his Marantz 2270 (yes I love my dad) which I have lovingly used, and did an LED light upgrade for ever since. Had paired it with Energy Connoisseur Series C-5 tower speakers. Also ran my...
  20. DCRand

    Old newbie with Marantz 2270

    So, 10 or so years ago my Dad, now 83, gave me his Marantz 2270 (yes I love my dad) which I have lovingly used, and did an LED light upgrade for ever since. Had paired it with Energy Connoisseur Series C-5 tower speakers. Also ran my Akai X 1810D reel to reel and vintage Pioneer turntable...
  21. Dubestar

    Marantz 170 DC Amp has no power on/off how do you properly manage connecting to power?

    Hello, I recently purchased a Marantz 170 DC Amp and have it paired with Marantz 2270 as the preamp. There is no power on/off button on the Amp. The manual says to plug it into the switched AC plug in the back of the Pre Amp (2270) - That works fine, except when I go to turn off the 2270 there...
    • Dubestar
    • Thread
    • 170dc 2270 amp marantz marantz 2270 marantz 2270 as preamp marantz amp popping sound preamp
    • Replies: 3
    • Forum: Marantz Audio
  22. Dubestar

    Marantz 2270 and the loudness button

    I have a Marantz 2270, 2230, and 2220b and I enjoy listening to music with the bass mid and treble up quite a bit (2PM) and the loudness pressed in. From everything I read and what people say I feel guilty doing this and feel like I'm going to "Fry" something in the receivers. Is this true? Does...
    • Dubestar
    • Thread
    • listening settings loudness button marantz marantz 2220b marantz 2230 marantz 2270 receivers treble vintage volume
    • Replies: 17
    • Forum: Marantz Audio
  23. Dubestar

    Ohm Walsh 2 paired with Marantz 2270

    I have been told and even read a little in other chats that Marantz 2270 and the (4ohm) Ohm Walsh 2 are not a good match? After checking with Ohm and looking up specs they said the 2270 is fine, since they show a minimum impedance of 4 Ohms. The 2270 specs are pictured in this post. I like the...
    • Dubestar
    • Thread
    • 22xx 4 ohms denon pl -51f marantz marantz 2230 marantz 2270 ohm walsh ohm walsh 2 recievers speakers
    • Replies: 4
    • Forum: Speakers
  24. grailseeker

    Marantz 2270 Slow to Click in...sometimes

    Hello, I have a Marantz 2270. It sounds great and seems to work fine, except sometimes the protection relay is slow to click in. Sometimes taking 10 seconds and occasionally up to a minute or more. The guy I bought it from said that his tech noticed it was slow, but said it shouldn't be a...
  25. need2boat

    cleaning the metal RCA and face plate on Marantz

    So as luck would have it I picked up a 2270 that needs a little TLC but like many and wanted to ask for recommendation on the best cleaner/mild polish for dirty tarnished things like the face plate. Switch covers, RCA and speaker plugs. The metal/chrome bits. I know for cleaning them most use...
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