Pultec EQH-2 Tube Program Equaliser
Originally introduced in 1956, the Pultec EQH-2 is a compact option to the 3U model EQP-1. The low-frequency boost/atten curves are identical to those of the EQP-1A and the high-frequency peak boost frequency centres are comparable to those of the EQP-1A. However, the shapes of the peak boost curves are slightly different, due to different choices of Ls and Cs. The Pultec EQH 2 has fixed bandwidth for the high-frequency peak boost and a fixed high-frequency attenuation frequency of 10 kHz. The line amp is the same minimalist class A output stage as used in the MEQ-5. Many engineers believe it provides a more transparent sound than the EQP-1A.
Main Features:
- Same Class A output stage as the popular MEQ-5 equalizer
- Similar to the iconic EQP-1A equalizer but with a more transparent character
- Fixed 12kHz Attenuation
- Fixed HF bandwidth
- 20, 30, 60, 100 CPS shelf boost, 0 – 13.5 dB
- 20, 30, 60, 100 CPS shelf attenuate, 0 – 17.5 dB
- 3, 5, 8, 10, 12 KCS peak boost, 0 – 18 dB;
- 10 KCS shelf attenuate, 0 – 16 dB
- Input Transformer: 600 Ohms
- Output Transformer: 600 Ohms
- Noise: Below -75 dBm
- Distortion: ā¤ 0.15% at +10 dBm into 600 Ohms
- Amplifier: Flat, 20 CPS to 20 KCS, +0 / -1 dB, ref 1 KCS
- Tubes: 1 ea 12AX7, 6AQ5, 6X4
Specifications
- 20, 30, 60, 100 CPS shelf boost, 0 – 13.5 dB
- 20, 30, 60, 100 CPS shelf attenuate, 0 – 17.5 dB
- 3, 5, 8, 10, 12 KCS peak boost, 0 – 18 dB;
- 10 KCS shelf attenuate, 0 – 16 dB
- Input Transformer: 600 Ohms
- Output Transformer: 600 Ohms
- Noise: Below -75 dBm
- Distortion: ā¤ 0.15% at +10 dBm into 600 Ohms
- Amplifier: Flat, 20 CPS to 20 KCS, +0 / -1 dB, ref 1 KCS
- Tubes: 1 ea 12AX7, 6AQ5, 6X4