Question about Samson SX1200 Amplifier

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Samson s 1500 AMP intermittently shuts itself off

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  • Scott Frye
    Scott Frye Sep 07, 2010

    Does this happen after its been on for a while?

    How old is the unit?

    and, have you ever dusted out the insides?

    Power amps are magnets for dust.

    Thanks

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Reason for burning smell and no audio in my Samson d415


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Have a problem with the xp510i - left channel has no output to speaker. Tested with other speaker and cable - appears to be the mixer.


"Tested with other speaker and cable" ... you did not tell us the results of the test. If swapping the speakers and cablles still had the same dead side, it is probably the power amp for that side and not the mixer part. Take in for repair. If you had an accident of speaker cable not being plugged in fully or pulled out while operating, this pops the power amp real quick. They also just plain fail at times. Plug a set of headphones into the MONO out jack. If you can hear audio going through the unit then the mixer is OK... and the power amp on the failing side has a failure. Note the headphones will be low level and probably only one side, usually the left as this is a mono signal and headphones are normally stereo.

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How do I connect my samson amp to my samson MDR10 mixer?


on the mixxer, use the "mix" "L" and "R" outputs. use 1/4 inch instrument cables, and connect the mox L and R to the amp's "channel 1" and "channel 2 inputs". always turn the mixing board on first, and the amp second- when turning off turn off the amp first, and turn off the mixer second. start with the mixer levels at the lowest, with the amp levels about 1/2 to 3/4 up. slowly raise the mixer channels first and then the mixer main volume until you have an adequate volume.

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1 Answer

Every time I use Samson xpl amplifier It shuts off after playing for about 10 minutes do you think what's the problem?


Heat.

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.


Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.


Check for loose speaker connections at the speaker as a root cause for intermittent shutdown.

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1 Answer

Need fuses for samson amp


The manual recommends 4 Amp Slow blow for 115 volt operation or 2 Amp Slow blow for 230 Volt operation for the 201a.
http://s3.amazonaws.com/samsontech/related_docs/Servo201a_OM_5L_v1_1.pdf

For the 260 Amp manual shows 10 Amp normal for 115 volt operation and 5 Amp nomal for 230 volt operation.
http://s3.amazonaws.com/samsontech/related_docs/ACF1AAF.pdf

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Can I use my amp with PA speakers?


Yes, but stay within the "ohms" limit of the amp.(probably 4 ohm or greater)
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