Question about Audio Players & Recorders

1 Answer

Amplifier power cutting out

I have a Marantz PM-80 amplifier, it turns on but when Class A is switched on the volume drops down to very low, also when not in Class A if volume is turned to over 1/4 level the amp cuts out ie: switches off the comes back on in 2 seconds, it does this until volume is turned right down. Can you help?
Thanks...Vanch

Posted by on

  • MONARO V8 May 07, 2008

    I hear what you are saying but if not enough power then what is preventing amp getting enough power. As for 'too hot' it can't be too hot when problem occurs from cold start. Amps location is in the open so not too hot. I think it seems to be a power supply problem, amp turns itself off then clicks back on again as stated in previous message. Could it be a faulty fuse causing this??

    Thanks...MONARO V8

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,224 Answers

Not enough power to amp and or amps location is too hot might want to invest in a couple cooling fans from computer store and attach where needed

an amp should take up to 3/4 load but when not enough air to it to cool it off it will shut down

try this turn gain all the way down and slowly work up too desired amp volume setting

Posted on May 07, 2008

  • Christophe Thompson
    Christophe Thompson May 07, 2008

    its speaker setup class A is the lower ohm setting so it letting only so much sound out you need something like a 4 ohm speaker for class A its ment to run lower sounds and im sure you have bigger speakers on class A

    its like a car amp

    higher the ohm's say for ohms the more power is needed lower the ohm's less power needed its a simple switch speakers around so class A wont be over powered this leads to its over heating and saftey shutoff



    you might low end speakers but this sterio should be pushing bigger speakers for this kind of watts high end speakers



    High-end Marantz PM 80 Integrated Stereo Amplifier. This is a unique Marantz offering as it is capable of running in both Class A and Class A/B mode. Output is 20 watts per channel in Class A mode and a generous 100 watts per channel in Class A/B mode. Output is more than powerful to drive whatever high fidelity speaker you might have

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Can i connet my marantz ki17 amp to a power amp


Hi, i don't really understand why you want to connect an amplifier to an amplifer.
Might be that you want to get a louder volume or ?don't know.

I don't think there is any need for you too connect marantz ki17 amp to a power am. Both do the same work, but might have different watts.
So you will need to check what you want to connect with the amplifier first and check the watts that can carry it without interference from the amplifier.

I guess that would do the magic.

Have a nice day.

Feb 18, 2011 | Marantz PM-15S1 2-Channel Amplifier

2 Answers

Hi, I have a Marantz PM 57 Amplifier that is not working. The power light comes on but no sound from speakers (nor headphones). Just moved house, and hadn't used it for a while (don't remember it not...


After a move and something doesn't work that could have before, it's always best to check inside for signs of damage. It might just be a bad soldering joint, so it could be just a small amount of damage.

Jan 14, 2011 | Cambridge Audio Azur 340A 2-Channel...

2 Answers

Marantz dedicated amplifier squeals


The symptom sounds like a feeback loop. As long as that indicator is showing near maximum output on one channel AVOID ATTACHING ANY SPEAKERS TO IT!!!! You'll cook the tweeters.


Turn it off and manually operate every control, knob and pushbutton throughout its range many times to wipe oxides away from their conductors.

Set all EQ controls to their midpoints and re-evaluate.

We don't know if it's an input or output problem yet. Does it do that with all inputs?

Jan 19, 2010 | Marantz PM7200 2-Channel Amplifier

1 Answer

The fuse keeps blowing in my marantz pm-57 amplifier. It says it takes a T 2.5A 250V fuse. I can only find 2.5A 250V fuses. What relevance is the ''T''.


Goo day sir, the T on the fuse has nothing to do on you marantz fuse blowing up, chances are you amplifier is shorted, check you IC amplifier/power transistor for shorts. Check also your speaker impedance. usually they are 8 ohms. You can use a technician's multitester device to check the impeadance. An imbalance or mismatch speaker can cause a fuse to blow and destroy your amplifier. hope this helps.

Jul 31, 2009 | Marantz PM-15S1 2-Channel Amplifier

1 Answer

Marantz PM 4000 has cut out


May be the problem solved here :
http://www.audiotoolers.com/ubbt/ubbthreads.php/ubb/showflat/Number/5316/page/1#Post5316

Nov 21, 2008 | Marantz Audio Players & Recorders

1 Answer

Marantz pm 7200


Could be a power supply failure or a Power "On" switch failure.

Kev

Feb 23, 2008 | Marantz PM7200 2-Channel Amplifier

1 Answer

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.

regards
Graeme

Jan 28, 2008 | Marantz PM-68 Amplifier

3 Answers

Marantz PM4000 amp keeps cutting out


There is a fairly simple fix to this problem here: http://www.audiotoolers.com/ubbt/ubbthreads.php/topics/5316/Problems_with_Marantz_PM4000_A.html

Apr 22, 2007 | Marantz ZS5300 6-Channel Amplifier

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

278 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts

kakima

Level 3 Expert

98694 Answers

 Grubhead
Grubhead

Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69654 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...