Marantz Receiver

[t8ter]

I recently aquired a Marantz receiver (2275) and although rated conservatively at 75 watts rms it does hold this for 1 minute as compared to some rated much higher but for 1 second. My question is because of the age of this receiver would it still be able to handle the sonics of todays movie audio? I am satisfied with the audio side for music.

 

[Seth=L]

I recently aquired a Marantz receiver (2275) and although rated conservatively at 75 watts rms it does hold this for 1 minute as compared to some rated much higher but for 1 second. My question is because of the age of this receiver would it still be able to handle the sonics of todays movie audio? I am satisfied with the audio side for music.

Yes, it can handle it. It should do quite well actually.

What do you mean it "held" 75 watts for one minute as apposed to one second with others?

 

[fmw]

All the advancement in A/V technology has taken place in digital signal processing and video in recent years. Amplifiers and speakers are about like they were 30 years ago. They look different but they sound the same. They were mature technologies then and they are even more mature today. The old stuff works just fine.

 

[markw]

You've got a great receiver there. Don't underestimate it.

Actually, those "old" receivers have more robust amp sectiions than today's HT units. It'll hold that 75 watts all the time.

I have a 2270, the version prior to yours, and it wad tested and rated by High Fidelity magazine in the early 70's for 90 wpc continious RMS @ 8 ohms.

If this site didn't limit attachments to 100k I would have posted it.

Consider getting it professionally aligned (FM) and tuned up for performance that'll blow any virtually any modern receiver. For stereo, of course.

 

[j_garcia]

I have an old Pioneer stereo receiver that is 36 yrs old and it still works fine, so as long as it works, there's no reason why you couldn't use it.

 

[t8ter]

Sorry if I am misunderstanding this procedure but the way I was told was that in the day when they tested say...... a marantz receivers power , rms, it was done by holding a clean signal for 1 minute, and now adays with receivers claiming to be say.... 800 watts ...... they can achieve this claim honestly but needing to only hold it for 1 second. Perhaps I have gotten some bad info ...enlighten me please.

 

[markw]

There were changes made by the FTC in 1974 to tighten up power ratings

Basically, they did away with exaggerated power ratings (peak, PMPO, IHF, etc...) on consumer products for home stereos. Car audio and boom boxes were exempt. Remember those boom boxes or dash mounted car stereos that advertised 200 watts?

Now, I'm working from memory here so cut me a little slack.

It stated a preconditioning period (20 minutes?) running at (half power?) and a time for which the unit had to maintain a certain power level, distortion rating, and bandwidth over which it maintained these two in order to advertise that number. The bandwidth and distortion levels must be shown with the advertised power rating in order to advertise that power figure.

Basically, a lot of 70 watt amps suddenly became 40 units. Both the Dynaco SCA-35 and my widdle Fisher 200T were among them. Both went from IHF to RMS and lost advertising watts power, but not "real world" performance.

When multi-channel came along, since they were not "technically" home stereo units, it was the wild, wild west all over again.

I did a quick search for the 1974 FTC regs on this but it's late and I'm tired, but I did stumble across this which you might find interesting. This sorta updates that a little.

http://www.soundandvisionmag.com/tips/2250/the-amplifier-power-ratings-game.html

If you only want to use the two power amps for a HT system it will more than hold it's own over similar (and probably considerably higher) rated amps in current receivers

Like I sugested before, if you want a kickin' first class stereo unit, it might behoove you to get this one tuned up and aligned. You'll not match that FM performance today and the amps in that thing bow to no-one. I still use my 2270 daily with a pair of JBL L-26's and people are amazed at these things. ...and all I've ever had done to it is had FM aligned 5 years ago.

But, if you really don't want it, i'll be glad to do you a favor and remove it from your sight.

 

[markw]

New morning and I found a fairly decent link on this.

I knew there was a decent one out there.

Apparently, he has some personal issues with RMS power but, considering the other options shown here, it's the best way to "standardize" the numbers.

These other power ratings are what the FTC was trying to do away with in 1974.

http://sound.westhost.com/power.htm

Also, the linked site is a veritable treasure trove of information on this, and other related subjects. If you're really curious to jump into this hobby, you might want to explore their other articles.

 

[rnatalli]

That receiver should do fine. Hook up some good speakers and away you go.

 

[t8ter]

Markw thanks for the info, I take it I am the he you mentioned having issues? ....... Not sure what you mean as I was just going by what I have read and been told but thanks anyway for your thoughts t8ter

 

[zildjian]

The Marantz 2275 is a great receiver. I still have mine powering the JBL L100 speakers they've been mated with for the last few decades! Like all old amplifiers (or amps in receivers), depending on if it has gone long periods of time without use, some of the capacitors in the amplifier section could have equalized and not be the value they once were (very likely at this point), which could affect performance and frequency response, but those effects could range from minimal to moderate. If you have someone who could bench test it (got an A/V repair shop nearby?), that would tell you a lot about if it's performing like it should, but they'd charge you $50 probably to do so. If that did turn out to be the case w/ the cap equalization, replacing the capacitors in the unit IMO is worth it. The transistors should be OK as long as the unit sounds OK, when a transistor goes bad, it usually doesn't do so quietly!