Click here to download FREDENSTEIN F601A (01) PDF MANUAL
PDF Content Summary:
****** Page 1 ****** Fredenstein (P2.ojc.5Jlond audio F601A MIC-PRE Operating Manual
****** Page 2 ****** Fredenstein F601A Microphone Preamplifier The F601A is a high performance professional microphone preamplifier. It’s innovative Zero- Negative-Feedback design improves low frequency and transient reproduction dramatically. In addition, the F60 IA delivers detailed high frequency information without being harsh, a truly silky and smooth experience. It’s fully discrete Class-A gain stage with its high performance Lundahl LL 1578XL input and LLI 5 17 output transformers outperforms “classic” microphone preamplifiers by a wide margin. To give engineers a greater control of the tonality, both transformers are individually switchable. Combined with the F601’s very low noise the F601A will provide exceptional sonic results. If used in a Fredenstein Bento D rack, all parameters will be displayed on the Bento LCD screen. As all Fredenstein products, the F601 is designed by a German-American team and manufactured in Taiwan. Installation: Please power down your rack or box first before inserting the F60 IA. The power requirements are maximum +1-16 V, +/- 150mA. 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. Fredenstein Hudo 32 VU 36 48 0 CLIP 60 72 Overview: Output Level Indicator OVU = +4dBu Clip Indicator Threshold +24 dBu GAIN 24 12 6 O dB 78 OUT IN PUT PUT TRANSFORMER POL LOWCUT P48 LOW-Z 2MQ F601A Rotary Controls: GAIN Switches: INPUT OUTPUT POL LOW CUT 1>48 LOW-Z Connector: Gain Control, maximum +78 dB activates the input transformer activates the output transformer Output Polarity 60Hz High Pass Filter +48 Volt Phantom Power Changes the input impedance to 300 Ohms High impedance input for instruments accepts balanced or unbalanced signals TS or TRS Fredenstein F601A Manual VI .2 July 18, 2014 Page 1
****** Page 3 ****** Fredenstein F601A Microphone Preamplifier Gain Control: Microphone Preamplifier Gain Control, maximum +78dB when input transformer is activated, +58 dB in transformerless mode. Input Transformer: When lit, the input transformer (Lundahl LL1578XL) is inserted in the signal path, if not lit, the F60 IA work in the transformerless input mode. Any resulting change m gain is automatically compensated by the internal CPU. Output Transformer: When lit, the output transformer (Lundahl LL1517) is inserted in the signal path, if not lit, the F60 IA work in the transformerless output mode. POL — Polarity Control: Setting the signal polarity, when turned on (LED lit) the signal is inverted. Low Cut — High Pass Filter: when turned on (LED lit), the 60 Hz High Pass Filter is activated to suppress unwanted low frequencies. P48 Phantom Power: Most FET condenser microphones as well as some other microphones with built-in amplifiers require +48V Phantom Power. Setting the P48 switch to the right enables +48 V through the balanced microphone line. Please check your microphone documentation if you are not 1000/0 sure. Enabling P48 on microphones not designed for P48 might cause severe damage. Please note, if the rack does not supply +48 V, the LED in the button will not turn on. LOW-Z: To avoid impedance mismatches between the F601A and connected dynamic and ribbon microphones, the input impedance can be lowered to 300 Ohms independent of the input transformer setting. DI Direct Input: The most common use for the DI input is to connect instruments like guitars directly to the F60 IA. The input impedance is greater than 500 KOhm to insure compatibility with most instrument pickups. After inserting a balanced (TRS, Tip-Ring-Sleeve) or an unbalanced (T S, Tip-Sleeve) plug, the balanced microphone input through the box or rack is automatically disabled. All parameters are internally stored in a non-volatile memory and are automatically recalled at power-up. The F601A is powered by a 32bit ARM CPU. Fredenstein F601A Manual VI .2 July 18, 2014 Page 2
****** Page 4 ****** Fredenstein F601A Microphone Preamplifier Technical Data: Frequency Response Distortion Input Noise Input Impedance Max. Input Level Output Impedance Max. Output Level Clip Indicator Input Attenuator High Pass Filter 20 Hz – 20,000 Hz, +/- O.5dB < 0.10/0 IKOhm (300 Ohms LOW-Z) + 12 dBu 20 Ohms + 26 dBu + 24 dBu – 20 dB (automatic) 60 Hz (switchable) Fredenstein F601A Manual VI .2 July 18, 2014 Page 3
****** Page 5 ****** 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 fredenstein.com
FREE ENGLISH PDF
OPERATING INSTRUCTIONS
USER GUIDE – USER MANUAL
OWNER GUIDE – OWNER MANUAL
REFERENCE GUIDE – REFERENCE MANUAL
INSTRUCTION GUIDE – INSTRUCTION MANUAL