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Altec Lansing 604-8H Crossover Revelations
Phase Correction for Altec Ferrite Duplexes
Recommended Parts - Substitutions - Construction Hints
604B Phase Correct Crossover
Altec Lansing 604B Phase Correct Crossover with MF EQ
605A/B Phase Correct Crossover
Altec Lansing 605A/B Phase Correct Crossover with MF EQ
Vintage Altec 604-8H Crossover Schematic
Simplified 604-8H EQ Crossover
Altec Lansing 604-8H Phase-Correct Crossover with MF EQ
Vintage Altec Lansing N1500A Schematic
Vintage Altec Model 19 Crossover Schematic
Altec Stonehenge III (3577A) Cabinet plans
Model 19 Shop Working Prints
Vintage Altec Lansing Model 19 Cabinet Plans
Vintage Altec Speaker Mounting Template
