DIY RE EQP5 500 Series Passive Equalizer

DIY RE EQP5 500 Series Passive Equalizer

TheDIY RE EQP5 employs the passive filter circuitry made famous by Pultec's legendary EQP series of equalizers. Decades after their introduction, these EQ's remain coveted for their uniquely musical and natural behavior.

The EQP5 features both clean and modern or vintage and colored output stages. You can switch between them with a solderless jumper on the board. The Modern output is a clean, robust, balanced output for excellent noise performance. Choose this output to use the EQP5 for transparent, natural tone-shaping.

The Vintage output employs a DOA (discrete op-amp) and custom transformer for a livelier dynamic character. The vintage output gives signals a more visceral, forward feeling that helps them translate clearly in a mix while requiring less level to do so. The solid-state Pultecs, the sound of which many engineers claim to be sweeter than that of the earlier tube units, use the same DOA/transformer output scheme. The output includes a 2523 transformer which is based on the 2503 output transformer found in vintage API consoles.

FEATURES:

• Stepped controls (21 positions) for easy recall and stereo operation
• Anodized aluminum knobs and front panel
• Pushbutton frequency-select switches for each band
• Q-adjustment via PCB trimpot
• Fully compatible with the 500-series format