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Product Detailed Parameters
- Description：AUDIO XFMR CHAS MNT
- Series：290
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：3.438" L x 4.300" W (87.33mm x 109.22mm)
- Height - Seated (Max)：4.188" (106.38mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：1.18Ohm
- DC Resistance (DCR) - Secondary：70mOhm, 80mOhm, 6.14Ohm, 46.16Ohm
- Transformer Type：-
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：120/240VAC
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 290TX is a power transformer designed for tube guitar amplifiers, specifically serving as a replacement for the Fender Bassman 59 (Reissue). It features a single primary winding rated at 115 VAC and operates at 60 Hz. The secondary configuration includes triple windings: a center-tapped high voltage output of 696 VAC CT, an auxiliary 55 VAC winding, and a 6.3 VAC/5 VAC filament winding. The unit supports a maximum current of 500 mA on the high voltage secondary. It utilizes chassis mounting with wire leads for termination and measures 109.22 mm in length, 87.32 mm in width, and 104.77 mm in height.
Feature Summary
- Designed specifically for tube application audio equipment
- Provides multiple secondary voltage outputs for amplifier circuits
- Utilizes chassis mounting style for secure installation
Applications
- Replacement power supply for Fender Bassman 59 Reissue amplifiers
- Tube guitar amplifier construction and repair
- Audio equipment requiring specific high voltage and filament supplies
Procurement Notes
Verify that the target amplifier circuit matches the 696Vct, 55V, and 6.3V/5V secondary requirements. Confirm chassis mounting dimensions fit the existing enclosure space. Ensure the primary voltage rating aligns with the local mains frequency and voltage standards before installation to prevent damage.
Selection Notes
Select this model only when replacing a failed transformer in compatible Fender-style tube amplifiers. Compare physical dimensions and lead configurations against the original component. Ensure the new unit meets the required current ratings for the specific amplifier design to maintain proper operation and safety.
Part Context
This component belongs to the Hammond 290 series of power transformers, which are widely used in the musical instrument industry. These units are engineered to replace original equipment manufacturer parts in vintage and reissue tube amplifiers, ensuring consistent performance and reliability for audio applications.
Replacement Considerations
Confirm compatibility with the specific amplifier model, such as the Fender Bassman 59 Reissue. Verify that the secondary voltage and current specifications match the original design requirements to ensure proper amplifier function.
