1608 Hammond Manufacturing, 1608 Datasheet - Page 2

• Manufacturer Part Number: 1608
• Description: TRANSFORMER AUDIO 8KCT 10W
• Manufacturer: Hammond Manufacturing
• Series: 1600r

Specifications of 1608

• Transformer Type: Push-Pull Audiophile, Ultra-Linear - Tube Output
• Impedance: 8KCT Primary, 4-8-16 Secondary
• Insertion Loss: ±1dB
• Mounting Type: Chassis Mount
• Frequency Range: 30 Hz to 30 MHz
• Primary Impedance: 8000 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: 10 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

Queenstown, Australia 61-8-8240-2244
(Screen Gr)
(Screen Gr)
Schematic - All Parts Except 1645
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
NOTE: Due to the unique interleaving of the windings BOTH secondary windings must be engaged (as shown) to meet specifications
Number
1650W
1650H
1650K
1650N
1650R
1650F
1650P
1650T
1608
1609
1615
1620
1645
Part
Red B+
(Plate)
(Plate)
Brn
Blu
AUSTRALIA
Grn/Yel
Blk/Yel
Yel
EUROPE
Grn
Blk
Audio Watts
PRI
(RMS)
Push - Pull
100
120
280
10
10
15
20
25
30
40
50
60
60
SEC
4 Ohm
Impedance
10,000 C.T.
8,000 C.T.
5,000 C.T.
6,600 C.T.
7,600 C.T.
5,000 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
Grn/Yel (4 Ohm)
Blk/Yel (0 Ohm)
Grn (4 Ohm)
Yel (8 Ohm)
Blk (0 Ohm)
Secondary Hook-Up Data
Audiophile - Output (1608-1650 Series)
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)
Grn/Yel
Operation
Blk/Yel
Yel
Grn
Blk
91
(Screen Gr)
(Screen Gr)
Note: To hook up 4/8/16 ohm secondary loads, see "Sec-
ondary Hook-Up Data" below. To hook up secondary to
70V loads, jumper Blk/Yel wire to Grn wire. Connect load
to Blk and White wires.
8 Ohm
Blu/Yel
Brn/Yel
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
Red B+
(Plate)
(Plate)
6L6GC, 807, 5881, EL34, 6146B, 6550B
807, 5881, EL34, 6146B, 6550B, KT88
Brn
Schematic - 1645 Only
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
St. Laurent, Quebec [phone]
6L6GC, 6V6, 807, 5881, EL34
6L6GC, 6V6, 807, 5881, EL34
Cheektowaga, NY [phone]
Guelph, Ontario [phone]
6L6GC, 807, 5881, EL34
PRI
6AQ5, 6L6, 6V6
Tube Types
CANADA
Grn/Yel
Blk/Yel
Yel
USA
Grn
Blk
SEC
Grn/Yel (4 Ohm)
Blk/Yel (0 Ohm)
White (70 V)
Grn (4 Ohm)
Yel (8 Ohm)
Blk (0 Ohm)
16 Ohm
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