Specification	1645A

DC Resistance (DCR) - Primary (Max)	79.35 Ohm
DC Resistance (DCR) - Primary (Min)	72.11 Ohm
DC Resistance (DCR) - Secondary (Value 1)	276 mOhm
DC Resistance (DCR) - Secondary (Value 2)	391 mOhm
DC Resistance (DCR) - Secondary (Value 3)	464 mOhm
DC Resistance (DCR) - Secondary (Value 4)	9.304 Ohm
Frequency Range (Max)	30 kHz
Frequency Range (Min)	30 Hz
Frequency Response Tolerance	1 dB
Height - Seated (Max)	3.06 in
Impedance - Primary (Ohms)	5 kOhm
Impedance - Primary (Ohms) Code	CT
Impedance - Secondary (Ohms) Options	4, 16, 8
Mounting Type	Chassis Mount
Power Level	30 W
Secondary Voltage (V)	70 V
Size / Dimension Length	95.25 mm
Size / Dimension Width	2.5 in
Termination Style	Wire Leads
Transformer Type	Push-Pull Audiophile, Ultra-Linear - Tube Output
Voltage - Isolation	2000 V
Weight	4.5 lbs

1645 Series

Part	Weight	Transformer Type	Height - Seated (Max)	Impedance - Primary (Ohms) Code	Impedance - Primary (Ohms)	DC Resistance (DCR) - Primary (Max)	DC Resistance (DCR) - Primary (Min)	Frequency Range (Min)	Frequency Range (Max)	Impedance - Secondary (Ohms) Options	Secondary Voltage (V)	Mounting Type	Power Level	Voltage - Isolation	Size / Dimension Width	Size / Dimension Length	Frequency Response Tolerance	DC Resistance (DCR) - Secondary (Value 4)	DC Resistance (DCR) - Secondary (Value 2)	DC Resistance (DCR) - Secondary (Value 1)	DC Resistance (DCR) - Secondary (Value 3)	Termination Style
Hammond Manufacturing 1645A	4.5 lbs	Push-Pull Audiophile Ultra-Linear - Tube Output	3.06 in	CT	5 kOhm	79.35 Ohm	72.11 Ohm	30 Hz	30 kHz	16 4 8	70 V	Chassis Mount	30 W	2000 V	2.5 in	95.25 mm	1 dB	9.304 Ohm	391 mOhm	276 mOhm	464 mOhm	Wire Leads

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