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So, always check to make sure all the lights are lit and everything is working when you first power up.
DIY 500 SERIES MIC PRE FULL
All power supplies we tested have current limiting regulation, meaning that the power supply rail will shut off if it senses a lot of sudden current draw, which can be triggered just by turning the rack/lunchbox on when full of modules. It is equally important to work out how the power supply in a rack or lunchbox responds to the inrush of current to the modules in it. We will work together and hopefully come up with a solution that does not compromise the sound of the MA5, yet meets API’s console requirements. But unlike class AB units, the current draw stays fairly constant, regardless of level or load to the output.ĪPI 1608 info: It has come to our attention that the MA5’s initial current surge the first second of powering up causes the 1608 power supply to trigger its regulation and turn off. This is about double compared to the current draw of the E27 since it is a class A amp with a big output transistor. Putting phantom power through the LPZ is not recommended because the resistive network inside the LPZ will only lower the phantom voltage down and not provide enough current to the condenser microphone.ħ5mA per rail, so 150mA total. The LPZ is not specifically a microphone pad, however, it will work and attenuate the same amount. Not recommended for unbalanced interfaces. The LINE PAD-Z works very well and can be used with other high quality, low noise preamps.
DIY 500 SERIES MIC PRE MANUAL
Some inputs are both, so you must switch to LINE input or use the TRS part of the combo XLR – read the manual to find out. IMPORTANT: When coming out of the preamp into the A/D converter, you must go into the LINE input of your digital converter, not the MIC input which would add gain otherwise you will have headroom issues and a poor signal-to-noise ratio. With the use of the LINE PAD-Z on the input of the MA5, unity gain would be at the 35dB position on the gain switch, with the output turned all the way up. 3) Its output impedance “looks” like a microphone to the MA5 preamp, so source impedances appear normal. 2) It drops the level -35dB, to the range of a microphone.
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The LINE PAD-Z adaptor serves three important purposes: 1) It provides the proper load to your PT or other converters without overloading them. The LINE PAD-Z is designed for mic pre’s without line inputs, such as the MA5, enabling you to plug a line signal into the mic input. However it is important to optimize the input load and output source impedances. It will add its signature harmonic overtones to the low end. Because the MA5’s gain is stepped, it makes a very accurate and great-sounding line amplifier to run mixes through.