Hammond 1650R 100W Push-Pull Parallel Output Transformer, 5K CT
Ships from and sold by A5 IT
Exclusive pricing and Net-30 terms. Sign in or create a free account.
Create Free Business AccountKey Features
- 100 W RMS audio, 5,000 ohm CT primary, 318 mA DC per side
- Secondary impedance 4/8/16 ohms
- Push-Pull Par. (2 or 4 Tubes); suggested tubes 807, 5881, EL34, 6146B, 6550B, KT88
- Frequency response 30 Hz to 30 kHz at full rated power, +/- 1 db max
- Enclosed (shielded), 4 slot, above chassis Type "X" mounting
- Insulated flexible leads, 9 in minimum; plastic coil forms
- Dielectric strength 2500Vrms; -40 to 105C temperature range
- Made in Canada; REACH and RoHS compliant
The 1650R is a 100 W push-pull tube output transformer with a 5,000 ohm centre-tapped primary, 318 mA DC per side and 4, 8 and 16 ohm secondaries. It is listed for push-pull parallel operation with 2 or 4 tubes and suggested types 807, 5881, EL34, 6146B, 6550B and KT88, and it carries the highest dielectric strength rating in the drawings of this range, 2500Vrms.
Construction follows the classic series design: the transformer is enclosed (shielded), with 4 slot, above chassis Type "X" mounting, plastic coil forms for coil support and insulation, and insulated flexible leads (9 in minimum per the part drawing). Frequency response is 30 Hz to 30 kHz at full rated power, +/- 1 db max (ref. 1 kHz) minimum. Because of the unique interleaving of the windings, both secondary windings must be engaged to meet specifications.
Dimensions from the series table are A 3.75 in (95 mm), B 4.25 in (108 mm), C 4.56 in (116 mm), D 3.00 in (76 mm) and E 3.06 in (78 mm), with 0.20 x 0.38 in mounting slots. Typical electrical data from the drawing includes a primary inductance of 320H / 145KOhm, leakage inductance of 10.84mH, a dielectric strength of 2500Vrms and a temperature range of -40 to 105C. Shipping weight is 12 lbs (5.44 kg).
The 1650R label is marked Made in Canada, and the part is REACH and RoHS compliant. The manufacturer notes that tube operating conditions change the optimum plate-to-plate load, so consult a tube manual or data sheet before choosing an output transformer.
Ideal For
- Push-pull tube hi-fi amplifiers
- Guitar amplifier output stages
- Triode, ultra-linear pentode and tetrode output
- Push-pull parallel multi-tube amplifiers
Overview
| Series | 1608-1650 Series - Tube Output Transformer, Push-Pull Audio (10-280 W) |
| Product Type | Output transformer, push-pull (classic tube type, ultra-linear) |
| Short Description | AUDIO TX 5K OHM 100 WATT |
Dimensions
| Dimension A | 3.75 in (95 mm) |
| Dimension B | 4.25 in (108 mm) |
| Dimension C | 4.56 in (116 mm) |
| Dimension D | 3.00 in (76 mm) |
| Mounting Slot G | 0.20 in (5 mm) x 0.38 in (10 mm) |
| Drawing Dimensions | 3.750 ±0.063, 3.000 ±0.063, 4.590 ±0.063, 4.188 ±0.125, 3.063 ±0.063 in |
| Weight (Spec Table) | 12 lbs |
| Dimension E (+/- 1/16") | 3.06 in (78 mm) |
| Mounting Slot (Drawing) | Ø0.203 x 0.375 in |
Electrical
| Operation | Push-Pull Par. (2 or 4 Tubes) |
| Test Conditions | All graphs input level 27dBu @ 1.0 kHz reference; results typical, subject to normal manufacturing and electrical tolerances |
| Audio Watts (RMS) | 100 |
| Frequency Response | 30 Hz to 30 kHz at full rated power (+/- 1 db max - ref. 1 kHz) minimum |
| Dielectric Strength | 2500Vrms |
| Maximum DC Per Side | 318 ma. |
| DCR Primary Blue-Red | 54.59 Ohms |
| Suggested Tube Types | 807, 5881, EL34, 6146B, 6550B, KT88 |
| DCR Primary Red-Brown | 46.62 Ohms |
| Measurement Instruments | dScope Series III Audio Analyzer; Wayne Kerr 3255B with 3265B Inductance Analyzer; HP 4192a LF Impedance Analyzer; Keithley 2010 DVM |
| Primary Impedance (Ohms) | 5,000 ct |
| DCR Secondary Black-Green | 0.300 Ohm |
| Secondary Connection Note | Both secondary windings must be engaged to meet specifications (unique interleaving of the windings) |
| Secondary Impedance (Ohms) | 4-8-16 |
| DCR Secondary Black/Yel-Yel | 0.420 Ohm |
| Output Power (Typical, Drawing) | 100 Watts |
| Input Impedance (Typical, Drawing) | 5000 Ohms |
| Leakage Inductance @ 60Hz, 10.0V SC | 10.84mH (Primary Brown-Red) |
| Output Impedance (Typical, Drawing) | 4, 8 & 16 Ohms |
| Inductance | Impedance @ 60Hz, 10.0V OC | 320H | 145KOhm (Primary Brown-Red) |
Identifiers
| UPC | 623980301907 |
| UNSPSC | 39121301 |
| Part Number | 1650R |
Packaging & Shipping
| Shipping Weight | 12 lbs (5.44 kg) |
Construction & Finish
| Leads | Insulated flexible leads, 9" min. (part drawing); series sheet states 8" min. |
| Mounting | 4 slot, above chassis Type "X" mounting |
| Enclosure | Enclosed (shielded) |
| Coil Forms | Plastic coil forms for coil support and insulation |
Environmental & Protection
| Temperature Range | -40 To 105C |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Purchasing this for your business?
Business account holders get access to exclusive pricing, volume discounts, and dedicated support. Create a free account to get started.
Frequently Asked Questions
What are the primary and secondary impedances of the 1650R?▾
The primary is 5,000 ct ohms and the secondary offers 4-8-16 ohm taps.
Which tubes is it suggested for?▾
Suggested tube types are 807, 5881, EL34, 6146B, 6550B, KT88, in Push-Pull Par. (2 or 4 Tubes) operation. The manufacturer advises consulting a tube manual or data sheet first, since operating conditions change the optimum plate-to-plate load.
Do I need to connect both secondary windings?▾
Yes. Due to the unique interleaving of the windings, both secondary windings must be engaged to meet specifications; see the hook-up diagrams.
How is the 1650R mounted?▾
It is enclosed with 4 slot, above chassis Type "X" mounting; the drawing shows Ø0.203 x 0.375 in slots.
What dielectric strength is the 1650R rated for?▾
The part drawing lists a dielectric strength of 2500Vrms.
Related Products
Save 52%1650P — Output transformer, push-pull, 60W , primary 6,600 ct, 200 ma., secondary 4-8-16
Hammond Manufacturing · 1650P
Save 52%1650T — Output transformer, push-pull, 120W , primary 1,900 ct, 403 ma., secondary 4-8-16
Hammond Manufacturing · 1650T
Save 52%1650N — Output transformer, push-pull, 60W , primary 4,300 ct, 318 ma., secondary 4-8-16
Hammond Manufacturing · 1650N
Save 52%1650W — Output transformer, push-pull, 280W , primary 1,900 ct, 806 ma., secondary 4-8-16
Hammond Manufacturing · 1650W
Save 52%1650M — Output transformer, push-pull, 60W , primary 1,400CT/800CT, 318 ma., secondary 4-8-16
Hammond Manufacturing · 1650M