Known Issues
- Complete component-level fault patterns are still being documented for this model.
- Second-hand units may have unknown prior service and non-original internal parts.
Product Archive
EQ-230
Legacy graphic equalizer model listed in the archived Phoenix Phorum EQ/DEQ processor manual directory.
Category
Equalizer / Processor / Crossover
Series
Signal Processing
Era
1990s processor era (manual index verified)
Specifications
- Documentation Status
- Manual index confirmed; full spec extraction pending
- Archive Document
- EQ215_215x_230.pdf
- Document Family
- EQ-215 / EQ-215x / EQ-230
- Category
- Equalizer / Processor
Visual Identification Notes
- Use original manual scans and faceplate photos to confirm exact panel layout and revision details.
- Tag front-panel slider count, switch labels, and connector map during cataloging.
Recommended Service Actions
- Capture high-resolution front/rear photos before any service work.
- Document all control behavior and channel symmetry before board-level diagnosis.
- Add verified specification values from primary manual pages as research progresses.
Parts List
Dual op-amp for preamp / crossover stage
Original: Legacy dual DIP-8 op-amp (marking varies by production run)
Replacement: Low-noise audio op-amp DIP-8
Verification: Proposed
DigiKey Recommendations
Audio-grade dual op-amp replacement
DigiKey: P23456-ND
Placeholder DigiKey reference. Verify stability and compensation in original circuit before bulk install.
Open DigiKey reference
Related Repair Guides
- Signal-path noise diagnosis (generic workflow)
Template process for hum, hiss, and channel imbalance root-cause analysis before replacing semiconductors.
Related Forum Threads
- Catalog scans and ad archive (contributor thread)
Crowdsourced scan quality standards and indexing conventions for source documentation.
Gallery
EQ-230 front photo
Front-on EQ-230 product photo showing full slider-bank layout and front-panel control positions.
EQ-230 angle photo
Angle view used to document chassis depth and connector orientation for restoration intake notes.
Historical Notes
Signal Processor Manual Baseline
Archived processor documentation covers EQ-215/EQ-215ix plus EQ-230/EQ-232 equalizer entries, AX-series crossovers (including AX-204A/AX-406A), and Bass Cube hardware, providing a primary-source baseline for specs and restoration notes.
Source-Backed Verification
No source-backed fact entries are attached to this model yet.
Sources / Notes
EQ-215/215x/230 Manual (archive PDF)
Primary index-linked source confirming EQ-230 in the processor manual set.
Open sourceProcessor Manual Index - EQ/DEQ
Directory listing confirms archived EQ-230 documentation family entry.
Open source
Model Disclaimer Block
Repair information is provided at user's own risk. Verify all measurements and polarity before power-up.