The F603A is a high performance High-Q four band equalizer for tracking and mixing (Q = 2). The F603A features passive LC (Inductor/Capacitor) filters combined with a very short signal pass. The low and high frequency filters are shelving types, while the mid frequencies are band pass filters. Each shelving filter has four different frequencies while the band pass filters offer six. The active filter range is indicated by LEDs. To facilitate sound comparisons, a true “hard” bypass is available. The gain range for each filter is +/- 16 dB. All filters are switched by relays to guaranty the highest possible sound quality. The F603A exhibits unrivaled silkiness, but at the same time an extremely detailed sound stage. The high power output stage with an impedance of less than 20 Ohms and a driving capability of up to +/- 200mA ensures no loss of performance with even the most demanding complex loads.
Fredenstein F603A FEATURES
High Frequency Control
Select the desired corner frequency for the high frequency shelving filter by flipping the switch up or down: 7000 Hz, 9000 Hz, 10 kHz and 12 kHz.
High Frequency Gain
Apply +/- 16 dB of high frequency gain.
Hi Mid Frequency Control
Select the desired frequency for the hi mid frequency band pass filter by flipping the switch up or down: 1000 Hz, 1500 Hz, 2000 Hz, 3000 Hz, 4000 Hz, Hz and 5000 Hz
Hi Mid Frequency Gain
Apply +/- 16 dB of hi mid frequency gain.
Low Mid Frequency Control:
Select the desired frequency for the low mid frequency band pass filter by flipping the switch up or down: 200 Hz, 250 Hz, 330 Hz, 450 Hz, 600 Hz, and 800 Hz
Low Mid Frequency Gain
Apply +/- 16 dB of low mid frequency gain.
Low Frequency Control:
Select the desired corner frequency for the low frequency shelving filter by flipping the switch up or down: 35 Hz, 60 Hz, 80 Hz, and 120 Hz
Low Frequency Gain
Apply +/- 16 dB of low frequency gain.
Hard Bypass function if switch is lit. Signal on the output is the input signal, no amplifiers are in the signal path (Filter Frequency LEDs will turn off). The F603A automatically stores all parameters when turned off and reloads them on the next power up, no need to fill out recall sheets. If inserted in a Bento D box, all parameters are displayed on the LCD display.
Fredenstein F603A SPECIFICATIONS
- Frequency Response: 20 Hz – 20,000 Hz, +/- 0.5dB
- Distortion: < 0.1%
- Input Noise: < -129 dB
- Input Impedance: > 1KOhm (300 Ohms LOW-Z)
- Max. Input Level: + 12 dBu
- Output Impedance: 20 Ohms
- Max. Output Level: + 26 dBu
- Clip Indicator: + 24 dBu
- Input Attenuator: - 20 dB (automatic)
- High Pass Filter: 60 Hz (switchable)
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