| Brand | Model | Primary Z | Notes | |--------|--------|-----------|-------| | | C30-O | 4.2kΩ | Premium upgrade; tighter bass. Requires lead extension for some colors. | | ClassicTone (obsolete but findable) | 40-18040 | 4kΩ | Exact replica of original. Best match if found used. | | Hammond | 1650F | 4.5kΩ | 40W rating. Mounting holes align; leads are shorter – extend carefully. | | Heyboer | HTS-9369 | 4kΩ | Custom wind for Classic 30. Available via Amp repair shops. | | Peavey OEM | 70713003 | 4kΩ | Order directly from Peavey parts (if in stock). |
Real-world test: Apply 1V AC at 1kHz to the secondary (16Ω tap). You should measure approximately 22.4V AC across the entire primary (plate to plate). If you see 0V or a dead short, the transformer is faulty. peavey classic 30 output transformer specs
+-----------------------------------+ | Primary: ~4,000 Ohms (4x EL84) | +-----------------------------------+ | [Magnetic Core] | +-----------------------------------+ | Secondary: 16-Ohm & 8-Ohm Taps | +-----------------------------------+ 1. Primary Impedance | Brand | Model | Primary Z |
Non-grain oriented (NGO) silicon steel, interleaved winding Best match if found used
If your original is dead (open primary, shorted turns), the replacement must match these minimum specs:
While Peavey's official documentation focuses on the end-user experience, technical specifications for the stock and replacement OTs reveal its underlying design: : 30 Watts RMS at clipping. Operating Class : Designed for Class AB push-pull operation. Output Taps : Features both 8-ohm and 16-ohm secondaries. Internal Speaker : Typically connected to the 16-ohm tap .