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Product Detailed Parameters
- Description：AUDIO XFMR CHAS MNT
- Series：175
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：3.796" (96.42mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：70Hz ~ 12kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1750TB is a tube application power transformer designed for guitar amplifier output stages. It features wire lead termination and operates within a frequency range of 70 Hz to 15 kHz. The unit has a single channel configuration with a primary impedance of 5,482 ohms and a secondary impedance of 8 ohms. Rated for 10 watts of power, this audio and signal transformer weighs approximately 1.81 kg (4 lbs). It belongs to the Vox TB35C2 series, indicating its specific compatibility with vintage tube amplifier architectures.
Feature Summary
- Designed specifically for tube guitar amplifier output applications
- Features wire lead termination for direct circuit integration
- Single-channel construction optimized for standard push-pull or single-ended topologies
Applications
- Replacement in Vox TB35C2 guitar amplifiers
- Restoration of vintage tube guitar amplifiers
- Custom tube amplifier builds requiring specific impedance matching
Procurement Notes
Verify the exact impedance requirements of the target amplifier circuit before procurement. Confirm that the wire lead termination style matches the existing harness or PCB layout. Ensure the 10W power rating meets the thermal and electrical demands of the intended vacuum tube pair. Cross-reference the part number with official Hammond Manufacturing documentation to confirm current manufacturing status and specifications.
Selection Notes
Select this component when replacing a failed output transformer in a Vox TB35C2 or similar amplifier architecture. The 5,482-ohm primary and 8-ohm secondary impedance values are critical for proper load matching with the connected vacuum tubes and speaker cabinet. Consider the physical weight and mounting requirements if space constraints exist within the amplifier chassis.
Part Context
The 1750TB is part of Hammond Manufacturing's specialized line of audio and signal transformers tailored for musical instrument amplification. It falls under the broader category of tube application power transformers, distinct from general-purpose isolation or distribution transformers. Its design focuses on maintaining the tonal characteristics and electrical performance required by classic tube amplifier circuits.
Replacement Considerations
This unit is explicitly documented as a replacement for the Vox TB35C2 amplifier. Verify that no other Hammond models share this exact impedance ratio if alternative substitutes are considered.
