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200/500 Series
Rackmount
Consoles
Dealers
Company
550A Discrete 3 Band EQ
Specifications
Input Impedance:66 kΩ high level
17 kΩ low level
Output Impedance:Less than 85Ω (transformer isolated)
Nominal Operating Level:–15 dBm to +12 dBm
Insertion Loss:None (bridging)
Frequency Response, Unequalized:±0.5 dB 30 Hz to 20 kHz
Noise:Unequalized, output noise of –90 dBm, high level strapping and
–98 dBm, low level strapping, 20 Hz to 20 kHz unweighted
Distortion:.05% THD max, 30 Hz to 20 kHz @ +4 dBm
.07% THD max, 30 Hz to 20 kHz @ +18 dBm
Clipping Level (3% THD):+30 dBm
Power Requirement:±15 volts to ±18 volts @ 70 ma
Controls:Dual Concentric Rotary: LF select: 30, 40, 50, 100, 200, 300,
400 Hz and stepped degree of equalization –12dB to +12 dB
 
Dual Concentric Rotary: MF select: 200, 400, 600, 800, 1500,
3000, 5000 Hz and stepped degree of equalization –12dB to
+12 dB
 
Dual Concentric Rotary: HF select: 2500, 5000, 7000, 10,000,
12,500, 15,000, 20,000 Hz and stepped degree of equalization
–12 dB to + 12 dB
 
All equalization is in steps of 2, 4, 6, 9 and 12 dB either plus or minus
Toggle Switch:50 Hz to 15 kHz band-pass filter In or out
Push Button: LF range Peak or Shelf
Push Button: HF range Peak or Shelf
Push Button: Equalization In or Out
Tally light when In
Connector:30 pin PC connector supplied
Size:1.5" X 5.25" X 7.75" Deep
Size (Boxed for Shipping):4.5" X 6.25" X 10.25"
Actual Weight:2 lbs.
Shipping Weight:2.53 lbs.