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Digital Designs M4 and Z1 protection "issues"


AmmoJammo

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Example 2.
Amplifier with the maximum power of 100W for the load of 4Ohm. Maximum output current there will be 5A (P=I^2*R). With the work to 4Ohm the protection will operate at the power of 100W, with 8Ohm of current overload simply it will not be, with 2Ohm the protection will operate at the power of 50W, i.e., it is accurate at the moment of the overload of amplifier. But if amplifier is not calculated for the two-ohm load, then neither the total nor exceeded power from the amplifier to remove will come out. Failure of amplifier is improbable.

The elements of current protection most frequently are connected into the emitter or discharge circuits of output transistors. With the appearance of current overload the protection locks output transistors, limiting output current. This is sufficiently effective and is reliable, if amplifier is executed on the discrete elements, t to the elements of protection are immune to heating from the heat-releasing components, and their operating conditions practically do not change. But if amplifier integral (microcircuit), then there are no these elements either or they are subjected to general heating together with the crystal of microcircuit, and the stabilization of the modes of operation of these elements is hindered. It is completely possible that these elements are disposed to the wear and tear with the maximum permissible values of the output current, when microcircuit works on the limit. By these, I think, it is possible to explain the frequent failures of integral amplifiers, and the, as a result, extended opinion about their unreliability.

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i have the same amps with a lot more batts & big alt & mine would shut off when they were strapped @ .5 each...1ohm both...but when i unstrapped them they stopped protecting

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i have the same amps with a lot more batts & big alt & mine would shut off when they were strapped @ .5 each...1ohm both...but when i unstrapped them they stopped protecting

but of course you never would have tried it with less batteries, because no one removes batteries once they're added ;)

you only realise the issue when you start off with less batteries, and try adding more...

I take it you came to the conclusion that it was the short circuit protection coming in to play?

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i have the same amps with a lot more batts & big alt & mine would shut off when they were strapped @ .5 each...1ohm both...but when i unstrapped them they stopped protecting

but of course you never would have tried it with less batteries, because no one removes batteries once they're added ;)

you only realise the issue when you start off with less batteries, and try adding more...

I take it you came to the conclusion that it was the short circuit protection coming in to play?

Seriously stop saying that, it is the most dumbass comment in this whole discussion. It makes no sense what so ever. You are looking at this from the complete opposite point of view, you are so far out in left field that I don't even know if you can come back to play ball. Comments like this confuse the hell out of new forum members cuz they get the complete wrong idea. What you are saying is so wrong I need like a triple face palm.......

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2017 MWSPL 1st place Mayhem & 4th Xtreme 4 
2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4
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2014 USACI 2nd place Streetbeat 5 - 162.6 db
2014 MWSPL 2nd place Xtreme 4 - 144.9 db
2013 USACI 1st place Streetbeat 4 - 161.9 db
2013 USACI 1st place Street Q+ - 162.8 db
2013 MWSPL 3rd Kaos2 & 4th Xtreme 4
2011 USACI 2nd place MOD 1001-2k - 160.0 db
2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db
2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest

Best score to date 164.4 db - Termlab Outlaw

Streetbeat 4 - 161.9 db

Streetbeat 5 - 162.6 db

MWSPL on Dash Legal door open (Music) - 162.5 db

Sealed on dash Legal (Music) - 161.1 db - Termlab

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lolz

so, anyway, once the car is fixed, I'll measure voltage drop, not that it will tell me why the amps are more prone to protect with more voltage.

Oh jeeze, voltage drop isn't the fucking problem!!!! It is the protection circuit because you have low ohm load!!!! I don't give a shit if you put 16 volts on that bitch it is still gonna protect due to ohm load. You do realize amps are more sensitive when strapped right? You understand what strapping is doing right? You are running the slave amp out of phase. Makes the amp alot more sensitive to circuit protection.

TEAM SOUNDQUBED -- TEAM SOUTH

TEAM S.O.B. - Founder & Captain

3x Streetbeat World Record Holder

2017 MWSPL 1st place Mayhem & 4th Xtreme 4 
2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4
2015 MWSPL 2nd place Mayhem & 4th Xtreme 4
2014 USACI 2nd place Streetbeat 5 - 162.6 db
2014 MWSPL 2nd place Xtreme 4 - 144.9 db
2013 USACI 1st place Streetbeat 4 - 161.9 db
2013 USACI 1st place Street Q+ - 162.8 db
2013 MWSPL 3rd Kaos2 & 4th Xtreme 4
2011 USACI 2nd place MOD 1001-2k - 160.0 db
2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db
2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest

Best score to date 164.4 db - Termlab Outlaw

Streetbeat 4 - 161.9 db

Streetbeat 5 - 162.6 db

MWSPL on Dash Legal door open (Music) - 162.5 db

Sealed on dash Legal (Music) - 161.1 db - Termlab

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I know nothing about an amps internals, but what I gathered from this thread: A amplifier is set to make X power.

If you go over X amount of power it will go into protect.

If you have more voltage going to the amplifier(less voltage drop), the amp will produce more. Putting it over that X amount, putting it into protect.

If you have less voltage going to the amplifier(more voltage drop), it won't be reaching that X amount, not going into protect.

Am I correct or am I off?

 

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