Passive-Bass
Modular-Mastering-Desk
Passive-Bass:
This is a passive EQ with only Bass Boost. One bell and one shelving band only boost. Both bands are based on custom-made Inductors with an discret OpAmp for the gain. There are two options for the discret OpAmp. The first is a more modern designe and the second is a more vintage, very simple designe with much more harmonics.
Low Bell Boost Fr:
6 different Frequencies
On for Bell and Shelving
Low Schelving Fr:
6 different Frequencies
Low Bell Boost:
+5dB in 1dB steps
Low Shelving Boost:
+5dB in 1dB steps
On / Off:
Off: hardwire bypass with relays
Price:
500,- euro (without german tax)
Availability:
Will be build on request. 3 weeks delivery time.
Specifications:
Frequency Response:


Max. Level:

Input Impedance:

Output Impedance:

Power consumption:

Weight:

Dimensions:
0,0 dB @ 5 Hz
-1 dB @ 100 kHz

26,5 dBu

48 kOhm

50 Ohm

220 mA

705 gr (1,5lbs)

2 slot
Noise level:
Input
LED-Meter
Filter
Side-only
density
Passive-Mid
Passive-Shelf
Tilt-EQ
Limiter
Output
Fader
VU-Meter
Monitor-Controller
Bell:
+5 dB
Shelving:
+5 dB
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modern OpAmp THD:

solid line: 2. harmonics
dashed line: 3. harmonics
vintage OpAmp THD:

solid line: 2. harmonics
dashed line: 3. harmonics
Shelving:
71 Hz +3 dB

Bell:
60 Hz +2 dB