Square State Solid State model one b Recording Equalizer

$539.00

We're very pleased to welcome the newest brand to our family- Square State Solid State!  Their model one b EQ is a classic inductor style EQ, that is getting great reviews in recording studios across the US!  

Contact us today to organise a trial, or if you're after a pair and would like to hear about multiple unit discounts.  Our standard price for a pair is $999 including shipping.

  • Design Concept

    The Square State Solid State model one b is a single channel, three band equalizer housed in a 1 RU chassis. The equalizer stages are comprised of inductor-capacitor filters, components commonly found in classic EQs. The EQ offers 6 frequency selections per band, each offering roughly 20 dB of cut/boost. The bell-shaped (bandpass) response curves are broader than similar equalizers, lending themselves to a very musical sound. Additionally, the high and low frequency bands offer both shelving and bell responses.


    The model one b is a swinging input equalizer. This is an equalizer circuit topology that is based on inductor-capacitor-resistor (LCR) filter networks. These filter networks are crossfaded between the inverting and noninverting inputs of an operational amplifier, resulting in adjustable cut/boost for each band. While the LCR filters are passive, the opamp provides makeup gain and buffering, such that the overall circuit is active.


    While the underlying circuit is old, the design for the model one b is new, and provides more versatility than common vintage swinging input implementations.

     

  • specifications

    Physical:

    Size: standard 1 unit rack enclosure: 19" wide, 1.75" tall, 6.375" deep overall (5.375" behind mounting rails).

    Weight: Approx 5 pounds.

    Connectors:

    Audio on standard balanced 1/4" TRS connectors.

    Electronically Balanced Input: 10K Ohm input impedance, each leg to ground.

    Impedance balanced output: 47 Ohm Output impedance.

    Power: 2.1 mm barrel connector for 15 VAC transformer.

    Controls:

    Bypass switch with LED

    Low Frequency Band:
    Filter selector switch offering 75 Hz and 150 Hz low shelving filters
    50 Hz, 80 Hz, 100 Hz and 150 Hz bell filters
    Continuously variable cut/boost control, approximately +/- 20 dB range.

    Mid Frequency Band:
    Filter selector switch offering 220 Hz, 350 Hz, 700 Hz, 1.5 KHz, 3 KHz and 6 KHz bells
    Continuously variable cut/boost control, approximately +/- 20 dB range.

    High Frequency Band:
    Filter selector switch offering 7 KHz, 12 KHz and 17 KHz bells
    7 KHz, 12 KHz and 17 KHz high shelving filters
    Continuously variable cut/boost control, approximately +/- 20 dB range.


Square State Solid State model one b Recording Equalizer
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  • Square State Solid State model one b Recording Equalizer
  • Square State Solid State model one b Recording Equalizer