1620 Hammond Manufacturing, 1620 Datasheet - Page 4

• Manufacturer Part Number: 1620
• Description: TRANSFORMER AUDIO 6.6KCT 20W
• Manufacturer: Hammond Manufacturing
• Series: 1600r

Specifications of 1620

• Transformer Type: Push-Pull Audiophile, Ultra-Linear - Tube Output
• Impedance: 8KCT Primary, 4-8-16 Secondary
• Insertion Loss: 1dB Typ.
• Mounting Type: Chassis Mount
• Frequency Range: 30 Hz to 30 MHz
• Primary Impedance: 6600 Ohms CT
• Secondary Impedance: 16 Ohms
• Termination Style: Chassis Terminals
• Dimensions: 2.5 in L x 2.75 in W x 3.06 in H
• Product: Audio Output Transformers
• Power Rating: 20 Watts
• Shielding: Shielded
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1620HM

All Parts Except 1645A, 1650E & 1650G
Queenstown, Australia 61-8-8240-2244
(Screen Gr)
(Screen Gr)
(Screen Gr)
(Screen Gr)
Blu/Yel
Brn/Yel
Blu/Yel
Brn/Yel
Note: The above examples of possible combinations are to help you narrow down the choices of transformers for your favorite tube types. How
you operate the tubes (push-pull, push-pull parallel, ultra-linear, class, B+, bias, operating points, etc.) will change optimum plate to plate load
impedance. Only a few of the most popular tubes are shown. As more tubes become available we will add them to the list. A tube manual or tube
manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer.
Basingstoke, UK 01256 812812
Number
1650WA
1650HA
1650KA
1650NA
1650RA
1650FA
1650PA
1650TA
1650G
1608A
1609A
1615A
1650E
1620A
1645A
Part
Red B+
Red B+
(Plate)
(Plate)
(Plate)
(Plate)
Schematic - 1650E Only
Brn
Brn
Blu
Blu
AUSTRALIA
Push - Pull
EUROPE
Audio Watts
PRI
PRI
(RMS)
Schematic
100
120
280
10
10
15
15
20
25
30
35
40
50
60
60
SEC
SEC
Impedance
10,000 C.T.
8,000 C.T.
5,000 C.T.
8,000 C.T.
6,600 C.T.
7,600 C.T.
5,000 C.T.
6,600 C.T.
6,600 C.T.
3,400 C.T.
4,300 C.T.
6,600 C.T.
5,000 C.T.
1,900 C.T.
1,900 C.T.
Primary
Blk/Red (4 Ohm)
Green (16 Ohm)
Blk/Grn (8 Ohm)
White (16 Ohm)
Audiophile - Output (1608-1650 "A" Series)
Grn (4 Ohm)
Blk (0 Ohm)
Yel (8 Ohm)
Blk (0 Ohm)
Suggested Tube Types
Push-Pull Par. (2 or 4 Tubes)
Push-Pull Par. (2 or 4 Tubes)
Push-Pull Par. (4 or 6 Tubes)
Push-Pull Par. (6 or 8 Tubes)
www.hammondmfg.com
Push-Pull Par. (4 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Push-Pull (2 Tubes)
Operation
93
Red B+
(Plate)
(Plate)
Brn
Blu
(Screen Gr)
(Screen Gr)
Blu/Yel
Brn/Yel
PRI
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
Red B+
6L6GC, 807, 5881, EL34, 6146B, 6550B
(Plate)
(Plate)
Schematic - 1650G Only
807, 5881, EL34, 6146B, 6550B, KT88
Brn
Blu
6L6GC, 5881, EL34, 6550B, KT88
6L6GC, 5881, EL34, 6550B, KT88
2A3, 6A3, 6AQ5, 6B4G, 6L6, 6V6
6AQ5, 6V6, 6BQ5, EL84, SV83
6AQ5, 6V6, 6BQ5, EL84, SV83
6AQ5, 6V6, 6BQ5, EL84, SV83
St. Laurent, Quebec [phone]
6L6GC, 6V6, 807, 5881, EL34
6L6GC, 6V6, 807, 5881, EL34
Cheektowaga, NY [phone]
Guelph, Ontario [phone]
6L6GC, 807, 5881, EL34
6L6GC, 807, 5881, EL34
PRI
SEC
1645A Only
Schematic
6AQ5, 6L6, 6V6
Tube Types
CANADA
Red/Yel (500 Ohm)
Blk/Yel (250 Ohm)
USA
Org (3.5 Ohm)
Black (0 Ohm)
SEC
Yel (16 Ohm)
Grn (8 Ohm)
White (16 Ohm)
Black (0 Ohm)
Grn (4 Ohm)
Yel (8 Ohm)
Org (70 V)
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