Speck Electronics Model ASC-V


4-Band equalizer.

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What is the ASC?

The ASC-V is a professional single channel 4-band equalizer in a 5.25” vertical module compatible with API Audio® 500 series rack frames. It is simple… it is useful… and it delivers the high quality and specifications found in all Speck Electronics gear.


This compact 4-band parametric equalizer has 12 controls for equalization adjustment that covers the audio spectrum from a low 25Hz all the way up to 25kHz. To enhance the classic EQ experience, the ASC-V offers both transformer-balanced and active-balanced outputs.


4 Sweepable Bands

L Band – a low band that sweeps the low frequencies from 25Hz – 400Hz. This band offers a Peak/Shelf select switch.
L/M Band – a switchable low and mid band. This fully parametric section can be switched between a low frequency band that sweeps from 40Hz – 800Hz, or a mid frequency band that sweeps 400Hz – 8kHz. This band has a variable bandwidth adjustment.
M Band – a fully parametric mid band with a frequency sweep range from 400Hz to 10kHz.
H Band – a high band that adjusts the high frequency from 2kHz all the way up to 25kHz. This band also offers a Peak/Shelf select switch.

The Rear Panel

In addition to the standard rack friendly edge connector, the ASC-V has a set of 1/4″ TRS input/output jacks, and a power input connector. With these I/O connectors and the optional power module, you can ignore the PC edge connector and use the ASC-V as a stand alone EQ.


  • Unified 5.25″ vertical module format that is compatible with API Audio® racks
  • Unique design allows module to be operated without rack. Can be self-powered and has 1/4″ TRS I/O jacks
  • Transformer and Active-balanced output
  • Captive mounting screws stay with the module and extend to pull the module out of the rack

Technical Specifications

Frequency Response
2Hz-135kHz (+0/-3dB)
.0014% @ +24 dBu
Residual Noise
-102dBu (22Hz-22kHz)
Maximum Input/Output Level
+28dBu /+28dBu
Input Impedance
30K Ohms (Balanced)
15K Ohms (Unbalanced
Output Impedance
600 Ohms (Transformer-balanced
60 Ohms (Active-balanced)
HxWxD=5.25″ x 1.59″ x 5.9″
(133mm x 38mm x 150mm)
Rack Power Requirements
+/- 16VDC @ 35ma
External AC Power Suply
120VAC or 230VAC


Additional information

High Pass


Low Pass


Frequency Bands







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