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Related Manuals for GRAS 48LX-8
Summary of Contents for GRAS 48LX-8
- Page 1 Instruction Manual GRAS 48LX-4 and 48LX-8 UTP Line Arrays Level and Frequency Calibration...
- Page 2 Any technical documentation that is made available by GRAS is the copyrighted work of GRAS and is owned by GRAS. The content in this document is subject to change without notice. GRAS Sound & Vibration is not liable or responsible for any errors or inaccuracies that may appear in this document.
- Page 3 Contents Introduction ........................4 RA4803 Sensitivity and Frequency Calibration Kit for 48LX-4 and 48LX-8 ..4 Adapter for Calibration of UTP Line Arrays ................... 4 Pistonphone Calibration Adapter and Electrostatic Actuator ..........4 Mounting the Line Array Calibration Adapter ............5 Frequency Calibration ....................
- Page 4 Assembled adapter Nut with bajonet Shoulder and backstop for type outer flange mounting on top of the line array calibration adapter Fig. 1. The RA4803 Sensitivity and Frequency calibration kit for 48LX-4/48LX-8. Instruction Manual 48LX-4 and 48LX-8 Line-Arrays | 4...
- Page 5 The yellow dots show The two fingerscrews where the adapter must be tightened seals onto the fairing. (approximately) evenly. Fig. 3. Showing how the adapter seals over the rubber fairings. Instruction Manual 48LX-4 and 48LX-8 Line-Arrays | 5...
- Page 6 3. Screw on the nut and tighten it. Push the adapter into the pistonphone Remove the collar from the pistonphone Secure it with the nut Fig. 4. Inserting the pistonphone adapter into the pistonphone. Instruction Manual 48LX-4 and 48LX-8 Line-Arrays | 6...
- Page 7 Fig. 5. Inserting the pistonphone with its adapter into the line array adapter. Correction factor Frequency Correction Factor Accuracy 250 Hz 0 dB ± 0.2 dB Instruction Manual 48LX-4 and 48LX-8 Line-Arrays | 7...
- Page 8 Frequency Calibration For frequency calibration, a setup like the one shown in Fig. 6 is needed. We recommend a com- plete microphone calibration system like the GRAS 90CA Microphone Calibration System. G.R.A.S. Actuator Supply Type 14AA Power Calibration Microphone signal...
- Page 9 Warranty, Service and Repair Warranty GRAS products are made of components from our proven standard portfolio and are all manu- factured of high-quality material and branded parts that were chosen and processed to ensure life-long stability and robustness. The warranty does not cover products that are damaged due to negligent use, an incorrect power supply, or an incorrect connection to the equipment.
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