Hammond 1750B 10W Single-Ended Guitar Amp Output Transformer, 8 Ohm
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Create Free Business AccountKey Features
- 10 W single-ended, 5482 ohm primary, 8 ohm secondary
- Paper winding; original amp manufacturer listed as Fender
- Designed for drop in replacement of original units
- Open style with 9" minimum leads
- 70 Hz to 10 kHz (0/-1.5 dB ref. 1 kHz)
- Distortion less than 1% @ 70 Hz, 1750 Vrms dielectric
The 1750B is a 10 watt single-ended output transformer for tube guitar amplifiers, part of the 1750 replacement and upgrade series. It has a 5482 ohm primary and an 8 ohm secondary, with a paper winding; the part page lists the original amp manufacturer as Fender.
As with the rest of the series it is designed for drop in replacement of original units, constructed to look similar to the original factory part where possible, with material and design specifications kept as close as possible to the original to preserve the stock "tone".
The drawing rates frequency response at 70 Hz to 10 kHz (0/-1.5 dB reference @ 1 kHz) and distortion at less than 1% @ 70 Hz. Typical 1 kHz data: primary DCR 254.6 ohms (Blue-Red), secondary DCR 0.420 ohm (Black-Green), primary inductance 6.54 H with 40.60 kOhm impedance, secondary inductance 15.89 mH with 95.64 ohm impedance, and 174.25 mH leakage inductance. Dielectric strength is 1750 Vrms; temperature range -40 to 105 C.
The 1750B is an open style unit with minimum 9" long primary (RED, BLU) and secondary (BLK, GRN) leads. Drawing dimensions are A 2.875" ±0.063, B 1.900" ±0.125, C 2.370" ±0.063 and D 2.375" ±0.063, with G 0.187" ±0.015. Shipping weight is 1 lb (0.45 kg). Made in Canada; RoHS and REACH compliant.
Ideal For
- 10 W single-ended tube guitar amplifiers
- Drop in replacement of original output transformers
- Guitar amp repair keeping the stock tone
Mounting
| Dimension G | 0.187" ±0.015 |
Overview
| Series | 1750 Series, Tube Guitar Amplifier Output Transformers (Replacement & Upgrades) |
| Design Intent | Designed for drop in replacement of original units; constructed to look similar to original factory units (where possible); materials and design specs kept as close as possible to the original to preserve the stock "tone" |
| Manufacturer Description | Output transformer, guitar amp, 5482 ohm pri., 8 ohm sec., 10W |
| Manufacturer Short Description | 10W OUTPUT TX. 8OHM SEC. |
Dimensions
| Dimension A | 2.875" ±0.063 |
| Dimension B | 1.900" ±0.125 |
| Dimension C | 2.370" ±0.063 |
| Dimension D | 2.375" ±0.063 |
Electrical
| Distortion | Less than 1% @ 70 Hz |
| Power Rating | 10 W |
| Amplifier Type | Single Ended |
| Primary Impedance | 5482 ohms |
| Frequency Response | 70 Hz - 10 kHz (0/-1.5 dB reference @ 1 kHz) |
| Secondary Impedance | 8 ohms |
Identifiers
| UPC | 623980252698 |
| UNSPSC | 39121301 |
| Part Number | 1750B |
Compatibility
| Original Amp Manufacturer | Fender |
Packaging & Shipping
| Shipping Weight | 1 lbs (0.45 kg) |
Construction & Finish
| Leads | Minimum 9" long primary and secondary leads (all leads 9" long min.) |
| Construction | Open style |
| Winding Type | Paper |
| Lead Colour Code | Primary: RED, BLU; Secondary: BLK, GRN |
Environmental & Protection
| Temperature Range | -40 to 105 C |
| Dielectric Strength | 1750 Vrms |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Electrical (Typical, Drawing)
| Output Power | 10 W |
| Input Impedance | 5482 Ohms |
| Output Impedance | 8 Ohms |
| DCR (Primary Blue-Red) | 254.6 Ohms |
| DCR (Secondary Black-Green) | 0.420 Ohm |
| Impedance (Primary Blue-Red, @ 1.0 KHz, 1.0 V OC) | 40.60 kOhm |
| Inductance (Primary Blue-Red, @ 1.0 KHz, 1.0 V OC) | 6.54 H |
| Leakage Inductance (Blue-Red, @ 1.0 KHz, 1.0 V SC) | 174.25 mH |
| Impedance (Secondary Black-Green, @ 1.0 KHz, 1.0 V OC) | 95.64 Ohm |
| Inductance (Secondary Black-Green, @ 1.0 KHz, 1.0 V OC) | 15.89 mH |
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Frequently Asked Questions
What are the 1750B impedances?▾
5482 ohm primary and 8 ohm secondary.
Is it single-ended?▾
Yes, it is a single-ended output transformer rated 10 W.
What winding type does it use?▾
Paper winding.
What is its frequency response?▾
70 Hz to 10 kHz, 0/-1.5 dB referenced to 1 kHz, with distortion under 1% at 70 Hz.
How long are the leads?▾
All leads are 9" long minimum.
