So, after all the talk about the 2270 and the rave reviews, I finally landed one in its original carton. I have a 2230 and 2285, so I was ready for some kind of slighter better performance, but was not the case. It sounds even duller than my 1550 that you all know I just recapped, now it sounds way crisp and popwerful.

My question is, the FM (Stereo) seems to be picky. You have to mess with the antena to get the FM stereo to come on while the other Marantz just pick up anything even 150 miles away and in stereo.

I am going to do a deep cleaning, but any thoughts on improving FM Stereo reception?

Also, let me say that I have found this forum way helpful and the AK members a great bunch.

TIA
Whaleman DIY

I seem to recall the 2270 has a 5 gang front end (can anyone verify that?) and therefore should be as sensitive as anything else you have. Probably needs a alignment from a tuner guru to bring it back to spec.. :thmbsp:

Lefty

Lefty -- It's a 4 gang. The 2325 has the 5 gang.

-- Chris

Ok cool, hard to keep track at my age!, I've had them both pass through here but sold them off to friends as I just had too many recievers and decided one of each brand would be a limit :D The model 19 is my Marantz keeper. :thmbsp:

Lefty

I have a 2270 as well, and it does not perform like my 2265B, it has incredible low end and mid, but lacks something in the highs as where the 2265B does not.
Also, you may want to look over and tighten the stuff inside the 2270, mine has a wierd humm until I tightened the transformer.

You have a great receiver, have you seen the ad from the 70's about how it got burned up, sat in water, then dropped 20ft from a top-loader, then had the power cord replaced and, tested to spec? One of the best Pre's for the money, mine pulls in stations like a train, my Pilot tube console is better, but, it's a Pilot!! Next year these 2270's/2265's/2285's/ are gonna be $300/$400+

Well, guess what, reading the instruction manual last night, I found it has an antenna trim button in the back, switched it off this morning and we are back in business.

I am going to take it all apart for my usual cleaning, and your are right alexkerhead, the crisp highs seem to lack--but I just remembered that I turned the highs down on the Cerwin Vega D-7s, as they were just too crisp with the recapped 1550.

So, great to own a piece of hi-fi history and yes I saw that burnt 2270. Probably the best propaganda any receiver could have. Here it is on the Marantz site: http://us.marantz.com/AboutUs/64.asp

I had mine professionally done a few years ago and it was a world of improvement in sensitivity, separation, etc.... Trust me, it's worth it.

It's a shame that tech retired. I started using him in '68 when I was running warranty repair work for Marantz, Scott, Fisher, H/K and others. I'm gonna be hard pressed to find another of his calibre locally.

Does anyone know a good tech for alignment in the DC area? Anyone know a Helmut?

My 2270 schematic shows it has a 5 gang FM front end. My spec sheet on the 2325 and 2275 state they both have 5 gang FM front ends. My 2270's FM performance holds it own with my 2325. Like Vintage said the late 70's 2285B improved the tuners capture ratio and quieting specs.

Try Peter Florance at Audio Services. He's a friend and he knows what he's doing.

Audio Services
544 Central Drive, Ste. 101
Virginia Beach, VA 23454
(757) 498-8277

* * * * *

The 2270 is not known for its sensitivity. The Pioneers, Sansuis and Harman Kardons of the same era could pick up weaker stations.

There are two things the 2270 normally needs by way of a "basic alignment." The first has to do with detector symmetry. This shows up as a tendency of the center-channel tuning meter to skew off to one side (usually to the right) when no signal is applied. The detector alignment cores are accessible through topside holes in the IF module about 1/3 from the left edge of the set. The core farthest to the right is for center channel symmetry. To do a basic tweek, disconnect the antenna and tune to interstation noise. Adjust the rightmost core to center the pointer.

NOTE: Go to an electronics store and pick up a kit of plastic alignment tools before attempting these adjustments.

The second tweak involves adjusting the oscillator coil in the RF module. The oscillator coil is marked, and is accessible through a topside hole. It's located in the right-rear corner of the RF module. You will usually find that on AM stations correspond to dial pointer position, but on FM they don't. Adjust the oscillator so that the dial pointer lines up with stations.

On about one 2270 in ten, the dial cord is stretched and you may need to move the dial pointer. Be VERY careful.

Good luck with your machine.

Fred Longworth

Thanks Fred and AKers. I do have a 2285! It was my second or third Marantz, and yes, though it hides in the shadows of the 2270 on eBay, it is a much better receiver / amp in many respects. Sound, quality, etc. It was also built about 5 years later in 1977. I definetely will keep it. I could not replace it with $600 today. The 2270 is OK in comparison. Inside, the 2285 is a beauty of black metal parts.

Try Peter Florance at Audio Services. He's a friend and he knows what he's doing.

Audio Services
544 Central Drive, Ste. 101
Virginia Beach, VA 23454
(757) 498-8277

* * * * *

The 2270 is not known for its sensitivity. The Pioneers, Sansuis and Harman Kardons of the same era could pick up weaker stations.

There are two things the 2270 normally needs by way of a "basic alignment." The first has to do with detector symmetry. This shows up as a tendency of the center-channel tuning meter to skew off to one side (usually to the right) when no signal is applied. The detector alignment cores are accessible through topside holes in the IF module about 1/3 from the left edge of the set. The core farthest to the right is for center channel symmetry. To do a basic tweek, disconnect the antenna and tune to interstation noise. Adjust the rightmost core to center the pointer.

NOTE: Go to an electronics store and pick up a kit of plastic alignment tools before attempting these adjustments.

The second tweak involves adjusting the oscillator coil in the RF module. The oscillator coil is marked, and is accessible through a topside hole. It's located in the right-rear corner of the RF module. You will usually find that on AM stations correspond to dial pointer position, but on FM they don't. Adjust the oscillator so that the dial pointer lines up with stations.

On about one 2270 in ten, the dial cord is stretched and you may need to move the dial pointer. Be VERY careful.

Good luck with your machine.

Fred Longworth

Fred:

Based on the detail of your response above, I wonder if you can give me some guidance on Detector Symetry tweak? Based on the images I put in the earlier posting:

http://audiokarma.org/forums/showthread.php?t=84665

could you tell me which of the cores will allow me to align my tuning meter on my 2240B?

Thanks,

Doug

My opinion only, but I think the 2270 was not a good model, very weak guts.
I much preferred my SX-828 at 54 wpc to the 2270.
The 2270 is the only Marantz I really spent time listening to back in college daze, a friend owned one. Yeah, we had a great time playing his stereo, but he had very easy 8 ohm nominal speaker systems. CRS what his speaker system was, maybe Marantz Imperial VII.

I've never had anything to complain about regarding my 2270's FM performance.

The thing sounds pretty much amazing with anything I throw into it. I am absolutley in love with it.

I have a 2230 on my night table with CW E-712s. Hard to tell the difference between it and the 2270, but for the smaller power supply and a notch or two on the volume. Man, but the 2285 is sexy in comparison. Albeit, the 2270 has that heavy metal of the early '70s. The 2285 is a keeper and recently put some MacIntosh feet on it as a treat, and I do have the B model in a 2238B. Way nice for the silver face era and great crispy performace and amazing tuner performace. I think it is 4th or 5th best Marantz FM. The 2270 is leaving the family soon due to its value. I think the house fire story made is somewhat of an icon.

2270 is indestructable, but it had major pre-amp flaws and fm reception flaws. The actual amp section is superb however.
I use my 2265B as a full receiver and pre-amp to the 2270, they both sound great, but the pre-amp in the 2270 was built like a tube amp- preamp, but without the tube sound.
But if you use a different pre, like a 2265B or 2285B pre-amp and tuner, you wont be dissappointed.

If the 2270 is like the 2275 the tuner is not bad at all and better than most. I did a complete job on my 2275 and I just love it. No one does the driver boards like Marantz with all the film it can be made to sound great. There are a lot things that can be done to it and it will play with the best of them. I will be glad to help if you want but I live in TN.

The Marantz 2270 totally sucks.

You should give it to me, so I can "dispose of it properly."



















:D