Question about Marshall 82 WTS LITHIUM BATTERY, 3 LED POWER INDICATOR => Model IDX-E80S Car Audio Amplifier

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Marshall 50w dsl

Hi
my marshall dsl 50w amp is connected to a 1960a cab and it keeps cutting in and out (sound comes on then off )
i have just replaced all the leads and still no solution
any ideas???
thanks
sid

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1 Answer

Put a patch cable from send to return on the effects loop in the back of the amp and see if it goes away. I would check your speaker, connections and speaker cable also. Is this a head or a combo?

Posted on Sep 28, 2008

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Fusion amp keeps cutting out


hi loose wires id check for first, but if it keeps playing up its an internal prob

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My amp is working but everytime it cuts off and i got to cut off my car and cut it back on. Also when i have the car off and i have my radio on it stays on. But when i am driving like 1 or 2 mins it cuts...


Check your ground wire and make sure it is bolted down into a solid ground. Do not use a factory ground make your own. Every system that has subwoofers has a little blue wire called a remote wire. The deck sends a signal to the amp thru this wire letting it know it has been powered on. It could be that there is a short in this wire, either from the deck side (where the wires are connected) or it could be also be detiorated insulation on the wire. pretty inexpensive to replace. In my opinion it sounds like you have a shotty ground wire. If you don't have this grab yourself a nice foot of 4 guage wire at your local HI-Fi shop. This should fix your issue if not let me know and we will keep troubleshooting

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Is there a wiring diagram for the nikkai EAPA450 Amp


Hi, if you still need a photocopy of instructions email me mail@srands.co.uk

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
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~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me mail@srands.co.uk

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1 Answer

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Start by dis-connecting the power lead at the amp, and securing it (where the bare wires are not touching ground) Now insert a new fuse then make the battery connection. If the fuse blows then you need to trace the power wire to find the short, or replace the entire wire, paying close attention to sharp edges and pinch-points that could cause this problem to reoccur.
If the fuse didn't blow, dis-connect the power lead at the battery then all of the other connections at the amp, reinstalling the power lead to the amp. With only the power lead connected at the amp and the good fuse inserted, reconnect at battery,and if the fuse blew then the problem is with the amp. and should be repaired or replaced depending on its value and the cost effectiveness of those two options.
If the problem has not yet been discovered, continue with tracing each of the remaining amp wires in that manner, as been described above.
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1 Answer

Amp sound


You need to do the following. Fuses don't always look blown. They can fail in other ways.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Let me know what you find.

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1 Answer

Marshall jcm dsl 100 head


try to find any diagram from a website.. then print it and give it to your amp tech. so he could Identify what are the wrong, what the first guy did to your amp and its better to buy a whole new tubes. I know your amp tech is very good. I'm just a noob about tubes yet I want to know how this works. hoping for the best for your amp tube.

Jan 25, 2008 | Marshall 82 WTS LITHIUM BATTERY, 3 LED...

1 Answer

Amp protection light comes on when raising volume...


It sounds like you either have too low of an ohm load or the voltage is dropping at the amplifier's power terminal.

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May 01, 2007 | Marshall 82 WTS LITHIUM BATTERY, 3 LED...

2 Answers

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