Häufig gefragt zu Power Supply

Can I connect two separate power supplies using the RockBoard Power Ace Current Doubler and RockBoard Power Ace Voltage Doubler?

Yes, if both power supplies have isolated outputs and the same specifications.

As long as both input sources feature an identical current or voltage, it makes no difference whether it is two separate 9V DC power supplies (for example, with 300 mA) or two isolated outputs of a multi-power supply with the same values.

The Current Doubler and Voltage Doubler were actually designed specifically for multi-power supplies.

Can I use the RockBoard Power Ace Current Doubler and RockBoard Power Ace Voltage Doubler to split a power source?

No, the Y-cables are designed to connect two outputs with the same voltage or current to combine the current or voltage.

 

Are the two 9V power slots of the Power LT XL isolated?

The RockBoard Power LT XL is a rechargeable battery powered power supply. Hence it is not connected to mains power ground.

Even if the unit is being charged and in use at the same time, the 9V power slots, as well as the 5V USB slot they are not connected to the mains ground.

Hence, they do not require galvanic isolation.
In order to prevent digital noise from crossing over between the two 9V and the 5V USB power slots all outputs are highly filtered to provide clean power.

This means you can daisy-chain analog and digital effects pedals without any problems on the Power LT XL, provided you use one 9V slot for analog and the other for digital pedals exclusively.

Can I bridge the two 9V outputs of the Power LT XL to combine there current output?

No, the 9V power slots of the RockBoard Power LT XL cannot be bridged in order to combine their current output (max. 1A each).

Since the Power LT XL is a battery powered power supply, there is no ground connection, which usually causes issues. The outputs therefore are not isolated.
However, in order to provide clean power to run analog and digital pedals at the same time. The power slots use high grade filtering of the output power, so no digital noise is being carried over from one slot to the other.

Can I bridge the two 9V outputs on my Power LT XL to get 18V?

No, the 9V power slots of the RockBoard Power LT XL cannot be bridged in order to combine their voltage output.

Since the Power LT XL is a battery powered power supply, there is no ground connection, which usually causes issues. The outputs therefore are not isolated.
However, in order to provide clean power to run analog and digital pedals at the same time. The power slots use high grade filtering of the output power, so no digital noise is being carried over from one slot to the other.

My Power LT XL looses charge when not in use, what can I do?

In general the battery charge of the Power LT XL should not decrease, when the unit is not in use and stored properly.

However, due to the construction of the litium-ion batteries used in the Power LT XL, the battery charge can decrease, if the power bank is being stored at to low a temperature.

Optimal temperature for this type of lithium-ion battery is 20 degrees Celsius / 68 degrees Fahrenheit.

Should the Power LT XL be storred at significantly lower temperatures, the battery charge can diminish by up to 15 % in 24 hours. This does not constitute a defect.

Please make sure to store your POWER LT XL only fully charged and at room temperature to avoid loosing battery charge and capacity.

What is so special about the Flat Power Cables?

The Flat Power Cables are constructed like coaxial audio cable.

The center conductor is connected to the tip and a surrounding shield, separated by a layer of non-conductive insulation, is connected to the barrel of the 2.1 x 5.5 mm barrel plug.

This makes the Flat Power Cables shield themselves against putting out any kind of electrical interference. Hence they will not cause any hum or hiss in your signal chain and can even be run in parallel to cables that carry audio signal.

Also, their plugs are of course as space saving as possible, so none of that precious pedalboard real-estate is being squandered.

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Tel.: +49 (0) 3 74 22 / 555 0
E-Mail: info(at)rockboard.de