Question about Jamo MPA201 2-Channel Amplifier

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No sound from my jamo

I have a jamo mpa 101 amp when u turn on the amp the level indicator blue is on but no audio also i noticed the fan is not running

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Posted on Jan 02, 2017

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gene579
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SOURCE: Two Jamo MPA-101 amps not working

I can almost guarantee that you'll find bad electrolytic caps on the power supply board to be the cause of the problem. I've seen several of these with the same problem. The protect circuit stays latched due to excessive ripple.

Posted on Aug 14, 2009

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gene579
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SOURCE: Jamo MPA-101 2 channel amp quit working

Check the small electrolytics on the power supply board for high ESR, Very common problem on these amps. Protect circuit stays latched due to high ripple from PS.

Posted on Aug 14, 2009

  • 137 Answers

SOURCE: I'm replacing a JAMO amp.

The 201 is 100w in to 4ohms and the 101 is 50w into 4 ohms other then that there the same

Posted on Apr 15, 2010

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1 Answer

Hi My problem is that my Jamo 200 sub sounds very


Is everything hooked up correctly sounds off I know also could be your amp is going on you cold be a multitude of problems or one of the simple ones i stated

Oct 26, 2013 | Jamo SUB 200 Subwoofer

1 Answer

Where on my mixer should I plug the subwoofer into? Or would plugging it in somewhere else be better ?


This will depend on whether your sub-woofer is powered (has it's own built in amplifier) or not. If it is not powered it will need connecting to an amplifier. If it is powered you will need a line level output either on the amp or the mixer.
Many modern amplifiers (and some mixers) have a dedicated output for sub-woofers in which case this is the best place for it because the higher frequencies will have been filtered out.
Some high quality amplifiers like the JAMO MPA 101 have a filter switch and adjustable filter level for powering sub-woofers. You then just connect the speaker to the speaker terminals in the normal way.

Otherwise on a p.a. mixer you could use the main output, one of the auxiliary, monitor or sub-mix outputs. If you are not using the main output you will need to route signal to the appropriate output accordingly. Either way your output signal will cover the full frequency range - your subwoofer may have built in filtering or you may need to use some sort of crossover to split the signal between the sub-woofer and the rest of your speaker system.

Feb 25, 2011 | Audio Players & Recorders

1 Answer

I'm replacing a JAMO amp.


The 201 is 100w in to 4ohms and the 101 is 50w into 4 ohms other then that there the same

Mar 24, 2010 | Jamo MPA201 2-Channel Amplifier

1 Answer

I have a MPA 201 2 channel amplifier that just stopped putting out power, power light is still on, any suggestions?


You need to determine if the power is getting to the audio amp section. For instance with the volume full up is it humming etc?
As a 'rule' it's unlikely that both left and right channels will fail at the same time (unless you have done something silly with the amp) you are looking for something that is common to both channels. Which is why the power section is first suspect. The exception to the rule (above) is where amps use say an IC power amp for both channels. You will find this IC on the big heat sink. Check whatever is on that anyway for damage or burning.
The only other area could be the pre-amp part. Again this could be a single IC controling both channels, so it's failure could cause a loss of sound. By the way if you can hear music/sound coming through when you put it up to full volume the pre-amp will be generaly good.

Nov 16, 2009 | Jamo MPA201 2-Channel Amplifier

1 Answer

Jamo MPA-101 2 channel amp quit working


Check the small electrolytics on the power supply board for high ESR, Very common problem on these amps. Protect circuit stays latched due to high ripple from PS.

Mar 24, 2009 | Jamo MPA201 2-Channel Amplifier

3 Answers

Two Jamo MPA-101 amps not working


I can almost guarantee that you'll find bad electrolytic caps on the power supply board to be the cause of the problem. I've seen several of these with the same problem. The protect circuit stays latched due to excessive ripple.

Dec 16, 2008 | Jamo MPA201 2-Channel Amplifier

1 Answer

MPA-101 Amplifier powers on, receives source signal, the fuse is not blown inside, but no sound comes out of the amplifier. The amp is pretty new, doesn't even have dust inside the unit.


Hello, is this a Radio Shack PA amp or Jamo amp? The unit is probably in "Protect" mode. Is this a PA system or a receiver...receivers have a protection circuit that will not let the speaker relay activate if the amplifier output section is shorted and sending voltage towards the speakers...so they won't fry!!The speaker relay should activate within 3 to 5 seconds if your output section is ok.

barneyluc

Oct 13, 2008 | Audio Players & Recorders

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