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PAM-OT-18-31R is listed in the Audio Transformers range at ChipApex. The manufacturer field lists Pacific Transformer. Its product description is Marshall 18 Watt Output Transfor. Review the specifications below when checking this part for your BOM.
Audio Transformers specifications for PAM-OT-18-31R
- Description：Marshall 18 Watt Output Transfor
- Series：-
- Mfr：Pacific Transformer
- Package：Tape & Box (TB)
- Mounting Type：Chassis Mount
- Size / Dimension：3.090" L x 2.590" W (78.49mm x 65.79mm)
- Height - Seated (Max)：2.590" (65.79mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：7.5kCT
- Impedance - Secondary (Ohms)：8
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：General Purpose
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：18W
- Operating Temperature：-
- Approval Agency：-
Audio Transformers datasheet and documents for PAM-OT-18-31R
Audio Transformers Overview
The PAM-OT-18-31R is an audio output transformer manufactured by Pacific Transformer, designed as a vintage replication of the Marshall 18 Watt amplifier circuit. It features a primary impedance of 7.5k Ohms and a secondary impedance of 8 Ohms. The component utilizes chassis mounting for secure installation within amplifier enclosures. This unit serves as a direct replacement or upgrade for original equipment in specific guitar amplifier models, ensuring accurate tonal characteristics consistent with the referenced vintage design era.
Audio Transformers Feature Summary
- Vintage replication of Marshall 18 Watt output transformer specifications
- Chassis mount construction for stable amplifier integration
- Designed to match historical audio performance standards
Audio Transformers Applications
- Marshall 18 Watt guitar amplifier restoration
- Custom tube amplifier builds requiring specific impedance matching
- Audio equipment repair and maintenance
Audio Transformers Procurement Notes
Verify compatibility with existing amplifier chassis dimensions and wiring configurations before purchase. Confirm that the 7.5k primary and 8 Ohm secondary impedances align with the target circuit design. Ensure the chassis mount style fits the available space within the enclosure. Cross-reference the part number with official Pacific Transformer documentation to confirm current manufacturing status and specification accuracy.
Audio Transformers Selection Notes
Select this transformer when replacing failed units in Marshall 18 Watt amplifiers or building custom amps requiring identical electrical characteristics. Consider the chassis mount requirement and physical footprint during selection. Evaluate if the vintage replication tone profile matches the desired sonic outcome compared to modern alternatives.
Audio Transformers Part Context
Pacific Transformer specializes in custom magnetics for demanding applications, ranging from aerospace to musical instruments. The PAM-OT series focuses on replicating classic amplifier transformers. This model specifically addresses the needs of guitar amplifier enthusiasts and technicians seeking authentic vintage sound reproduction through precise impedance and winding specifications.
Audio Transformers Replacement Considerations
PAM-OT-18-31R is intended as a direct replacement for original Marshall 18 Watt output transformers. Verify pinout and mounting hole alignment with the original unit. No other substitute part numbers are publicly confirmed for this specific application.
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