F609 TUBE MIC-PRE Operating Manual
Fredenstein F609 Tube Microphone Preamplifier The F609 is a professional tube microphone preamplifier, using two double-triodes, one ECC802S and one ECC803S, in a single 500 series rack module. It provides an +160V power-supply to avoid starving the tubes. The F609 uses high quality American made input and output transformers. Additional features are: 20db Pad, polarity control, phantom power, a two stage low-cut filter, and a standby mode to preserve the tubes if not in use.
Fredenstein F609 Tube Microphone Preamplifier Installation: Please power down your rack or box first before inserting the F609. The power requirements are maximum +/-16V, +/-250mA. In case you don't use a Fredenstein Bento, please make sure your box or rack can support the current. Please consult your third party documentation in case of any doubt. Gain Control: Microphone Preamplifier Gain Control, minimum +34dB, maximum +70dB. Output Control: Range -20dB to 0db.
Fredenstein F609 Tube Microphone Preamplifier Technical Data: Frequency Response : Distortion : Input Noise : Input Impedance : Max. Input Level : Output Impedance : Max. Output Level : Clip Indicator : Input Attenuator PAD : High Pass Filter : 20 Hz – 20,000 Hz, +/- 1dB < 0.1% < -127 dB > 1200 Ohms + 12 dBu 200 Ohms + 26 dBu + 24 dBu - 20 dB 50 Hz or 100Hz (switchable) Fredenstein F609 Manual V1.1 Nov.
Contact Info: Fredenstein Professional Audio by Orion Communication 7F-1, No. 582, Ruei Guang Rd. Neihu District Taipei 114 Taiwan Phone : Email : Web : + 886-2-2657-2618 info@fredenstein.com www.fredenstein.
