Question about Marantz PM-68 Amplifier

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Marantz 2240 I disconnected and re connected my beloved 1970 classic tuner and lost all the control knob functions; volume, fm,am, bass, balance you name it. Wuold it be a simple fix or did I blow something major out? Where could I get a part if it is one part only. It still works but the volume is on blow out level. It works on the setting I last had it at. Thanks Susan

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Re: marantz 2240

Hi there, be sure that you have reconnected the jumpers from pre am out to power amp inm opn the rear of the unit. You will get very little of anything if you leave these jumpers out. Also check that you have not inadvertantly turned on the taoe monitor. Give the switch a few operations to check that it isnrt playing up also.

If you are still having problems, feel free to get back to me here and we can sort this out for you.


Posted on Mar 17, 2008

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Dear Sushant,    I do not think your use of an equalizer has caused any problems.  I will explain the proper use of the source/direct button.  This button's function is to monitor the output of a recorder connected to the record outputs of your amp.  When this button is pressed on the sound going to the speakers comes direct from the "source" (cd, radio tuner, phonograph etc.) when in the off position you can monitor the recording of whatever source is being recorded via the tape deck.  This switch must be off to record through the amps record outputs.    To test this, put a blank tape in the tape deck, choose the source as phono and place the dec in record/pause.  With the source direct button pressed on you should hear a change in volume when moving the amp's volume knob only.  When source direct is off you will be able to hear the output of the tape deck, so adjusting the tape deck's record level will also affect the volume coming out of the speakers.  more record level in/ more level out.!    Below is copied from page 9 of your user operation manual for Marantz's explanation of the source/direct button.  image.tiff
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1 Answer

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Hi spanky

Sorry for the delays in getting back to you. Been busy here this week.

OK. to connect the 2275 to the 1152,there are 2 ways of going about this.

You can plug the pre- out of the 2275 to the power amp-in of the 1152. In doing this you are using the power amp section of the 1152 and the preamp functions of the 2275. Your other gear like CD player, tape deck and so on also plug into the 2275.

the other(better) way is to plug the pre-out of the 2275 into the tuner inputs of the 1152, leaving the volume at about 40% on the 2275 and use the 1152 as an integrated amp. This means you are using the 2275 as a tuner only. When you do this, you will need to use an RCA lead to jumper the pre-out/poweramp-in connections on the back of the 1152, and the 2275 ... L to L and R to R respectively.

I am still wondering why you want to use 2 integrated amps (each having a preamp and a poweramp section) The only real benefit the 2275 brings to your system will be tuner functions. You could just get a tuner and run the 1152 to be an ideal rig.

Let me know what your ideal setup you are wishing to build would have. Speakers, other gear like CD, tape deck, etc.


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