AudioQuest Niagara 5000 Manuel Du Propriétaire

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Trouble-Shooting Guide
At AudioQuest, we always appreciate hearing from you. However, if you have questions, problems, or 
suspect that your Niagara 5000 requires service, please start here.   
There is no power to any of the AC outlets.  
When the Niagara 5000’s front-panel LED power indicator glows blue, the unit is operational. If the Power On 
indicator is not lit, consider the following: Is the upper portion of the front-panel rocker switch fully flush with 
the chassis? Is the input AC cord fully inserted into the Niagara 5000’s AC inlet? Is the input AC cord properly 
plugged into the wall AC service outlet? Is the wall’s AC outlet functioning properly? Plug into the outlet another 
component, product, or lamp to verify that power is present and that the electrical panel’s circuit breaker has 
not tripped. 
If there are only one or two AC outlets that have no output power, a component may be malfunctioning. Verify 
the AC output with a known simple device such as a lamp.
There is no power to any of the AC outlets and the red front-panel Extreme Voltage 
indicator is lit.  
This indicates that either there is more than 140VAC (+/-3V) present on the wall’s AC service outlet, or the Niagara 
5000’s protection circuit is miscalibrated. The latter is quite rare. (This circuit is adjustable, but it’s tested and 
retested before it leaves the factory, and it’s glued into place, so shipping will not affect it.) Use an AC voltage 
meter to determine if your outlet has too much voltage to be safe for operation, or if there is a wiring fault that is 
causing this to occur. 
Once the power is brought into a safe range for operation (90VAC to 137 VAC), the Niagara 5000’s protection 
circuit will automatically switch to operational mode and the blue power indicator will light.
The main power rocker switch/circuit breaker tripped to the lower (off) position 
while the system was playing.  
You may have exceeded the maximum current capacity of the Niagara 5000. This should be rare, but it may be 
possible. Typical power amplifiers draw about one-third of their maximum current consumption at 120VAC, as 
listed in the product’s specifications (typically found in their owner’s manual). This is further complicated by 
the fact that the power consumption to all AC outlet groups (banks 1 through 6), is an additional draw on the 
maximum current capacity of 20 amps that will trip this switch/magnetic circuit breaker.       
The Transient Power Correction Circuit may also contribute to the overall draw seen by the circuit breaker. Still, 
it should be rare that the total capacity is exceeded, but, given that some televisions, projectors, and power 
amplifiers can draw substantial current, it is certainly not impossible. If this is the case, an additional Niagara 5000, 
and a discrete 15- to 20-amp AC service on the same phase of the electrical panel, will be required for some or all 
of the power amplifiers.
My power amplifiers sound muddy, compressed, or weak.  
The Transient Power Correction Circuit may not be operating. Be sure that all power amplifiers, powered receivers, 
powered loudspeakers, and or powered subwoofers are plugged into the High Current/Power Correction 
AC outlets. If any of these are plugged into the Ultra-Linear Dielectric-Biased Symmetrical Power outlets, the 
connected power amplifier(s) will be current compressed, as the impedance is too high for any power amplifier. 
If the power amplifier(s) are plugged into the High Current/Power Correction AC outlets, make certain that the 
rear-panel Power Correction switch is in the “Engaged” position. Although it is possible for the Power Correction