Benchmark MPS 400
Manuals and User Guides for Benchmark MPS 400. We found 1 manuals for free downloads User manual
The MPS-400 and MPS-420 microphone preamplifiers are designed to achieve the highest performance available in microphone pre-amplification. The MPS-400 and MPS-420 are ideal for the recordist that wants to maximize performance for analog or digital recorders using the superior microphone technologies. By immediately raising the microphone signal amplitude to the nominal system reference amplitude, minimum interference is allowed to enter the system from power lines, SCR stage lighting, etc.
Key Features
- Continuously adjustable gain from +18 to +70 dB
- High Frequency response of -3 dB greater than 200 kHz
- Low frequency response dependent on gain
- Output Noise of -93 dBu for gains up to 36 dB
- Balanced output with ±15 volt supplies = +27 dBu
- Unbalanced outputs = +21 dBu
- Output impedance of 60 Ω balanced; 30 Ω unbalanced
- Two pole common mode filter that limits common mode bandwidth to 26 kHz
- R.F. is down 60 dB at 1 MHz
Pages: 24 Benchmark MPS 400 User manual
Brand: Benchmark Category: Musical Equipment Size: 908 KB
Languages: English
Open manualFrequently Answers and Questions
What is the output noise floor for the MPS-400 and MPS-420 preamplifiers at minimum amplification (18 dB)?
The output noise floor for the MPS-400 and MPS-420 preamplifiers at minimum amplification (18 dB) is -94 dBu.
What is the maximum output level of the MPS-400 and MPS-420 preamplifiers?
The maximum output level of the MPS-400 and MPS-420 preamplifiers is +27 dBu for balanced outputs and +21 dBu for unbalanced outputs.
What is the recommended load impedance for the MPS-400 and MPS-420 preamplifiers?
The recommended load impedance for the MPS-400 and MPS-420 preamplifiers is 2 kΩ or greater. While the MP-4 cards and the DOM-3s will drive a 600 Ω load to a reasonable output level (+25 dBu) they do so with reduced performance and this is not recommended.
What is the frequency response of the MPS-400 and MPS-420 preamplifiers?
The high frequency response is -3 dB greater than 200 kHz for any gain. The low frequency response is dependent upon gain: worst case @ A=70 dB the -3 dB point is 26 Hz, @ A=40 dB the -3 dB point is 0.85 Hz.
What type of power supply is required for the MPS-400 and MPS-420 preamplifiers?
The power requirements for the MPS-400 and MPS-420 are a bipolar power supply with output voltages of ± 12 VDC to ± 22 VDC. This supply should be well regulated with low ripple and noise and should be capable of the appropriate load current. Additionally, if phantom power is to be used with condenser microphones, then a +48 VDC supply will be needed. Again, it will need to be a supply with low ripple and noise, capable of the appropriate load current. The power supply ground is common for both the low voltage ± supply and the high voltage phantom supply.
advertisement