1750R

Active

Hammond Manufacturing

AUDIO TRANSFORMER 11.11:1 2250VRMS 25.72OHM/12.86OHM PRIM. DCR 0.222OHM SEC. DCR 7 TERMINAL WIRE LEAD FLANGE MOUNT

Deep-Dive with AI

Search across all available documentation for this part.

Documents1750 Series Catalog Page

1750R

Active

Hammond Manufacturing

AUDIO TRANSFORMER 11.11:1 2250VRMS 25.72OHM/12.86OHM PRIM. DCR 0.222OHM SEC. DCR 7 TERMINAL WIRE LEAD FLANGE MOUNT

Deep-Dive with AI

Documents1750 Series Catalog Page

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	1750R

DC Resistance (DCR) - Primary	25.72 Ohm, 12.86 Ohm
DC Resistance (DCR) - Secondary [custom]	222 mOhm
Frequency Range [Max]	12 kHz
Frequency Range [Min]	50 Hz
Frequency Response	1 dB
Height - Seated (Max) [Max] [z]	4.623 "
Height - Seated (Max) [Max] [z]	117.42 mm
Impedance - Primary (Ohms)	2kCT
Impedance - Secondary (Ohms)	16 Ohms, 8 Ohms, 4 Ohms
Mounting Type	Chassis Mount
Power Level	100 W
Size / Dimension [x]	3.75 in
Size / Dimension [x]	95.25 mm
Size / Dimension [y]	3.936 in
Size / Dimension [y]	99.97 mm
Termination Style	Wire Leads
Transformer Type	Push-Pull Audiophile, Ultra-Linear - Tube Output
Turns Ratio - Primary:Secondary [custom]	11.11
Turns Ratio - Primary:Secondary [custom]	1
Weight	283.5 g
Weight	0.625 lb

1750 Series

Part	DC Resistance (DCR) - Secondary [custom]	Impedance - Primary (Ohms)	Frequency Response	Termination Style	Turns Ratio - Primary:Secondary [y]	Turns Ratio - Primary:Secondary [x]	Mounting Type	Power Level	Height - Seated (Max) [Max] [z]	Height - Seated (Max) [Max] [z]	Size / Dimension [y]	Size / Dimension [x]	Size / Dimension [x]	Size / Dimension [y]	Frequency Range [Min]	Frequency Range [Max]	Weight	Weight	Transformer Type	Impedance - Secondary (Ohms)	DC Resistance (DCR) - Secondary [custom]	DC Resistance (DCR) - Secondary [custom]	Turns Ratio - Primary:Secondary [custom]	Turns Ratio - Primary:Secondary [custom]	Height - Seated (Max)	DC Resistance (DCR) - Primary	DC Resistance (DCR) - Secondary [custom]	Height - Seated (Max) [Max]	Height - Seated (Max) [Max]	Turns Ratio - Primary:Secondary	DC Resistance (DCR) - Secondary [custom]
Hammond Manufacturing 1750Q	120 mOhm 190 mOhm 270 mOhm	7.371kCT	1 dB	Wire Leads	1	21.46	Chassis Mount	50 W	96.85 mm	3.813 in	3.28 in	3.125 in	79.38 mm	83.31 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	4 Ohms 8 Ohms 16 Ohms
Hammond Manufacturing 1750U		1.7kCT	1 dB	Wire Leads			Chassis Mount	100 W		4.6 in	4.02 in	3.75 in	95.25 mm	102.11 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	4 Ohms 8 Ohms 16 Ohms	100 mOhm	120 mOhm	1	10.4	116.84 mm	15.36 Ohm 16.56 Ohm
Hammond Manufacturing 1750R		2kCT	1 dB	Wire Leads			Chassis Mount	100 W	117.42 mm	4.623 "	3.936 in	3.75 in	95.25 mm	99.97 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	4 Ohms 8 Ohms 16 Ohms			1	11.11		12.86 Ohm 25.72 Ohm	222 mOhm
Hammond Manufacturing 1750M		4.2kCT	1 dB	Wire Leads			Chassis Mount	60 W					4.05 in 102.87 mm	77.47 mm	70 Hz	15 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	2 Ohms 4 Ohms 8 Ohms						68 Ohm	160 mOhm	3.563 in	90.5 mm	22.93:1
Hammond Manufacturing 1750V		4kCT	1 dB	Wire Leads			Chassis Mount	30 W			3.325 "	3.125 in	79.38 mm	84.46 mm	70 Hz	15 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	8 Ohms 16 Ohms						138 Ohm	720 mOhm	3.843 in	97.61 mm	15.93:1
Hammond Manufacturing 1750G		3.8kCT	1 dB	Wire Leads			Chassis Mount	50 W	98.37 mm	3.873 "	3.32 "	3.75 in	95.25 mm	84.33 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	4 Ohms 8 Ohms 16 Ohms			1	14.21		95.61 Ohm	250 mOhm
Hammond Manufacturing 1750P		3.4kCT	1 dB	Solder Lug			Chassis Mount	50 W	80.98 mm	3.188 "	3.09 in	3.75 in	95.25 mm	78.49 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	2 Ohms 4 Ohms 8 Ohms 16 Ohms						40.5 Ohm 41.3 Ohm 81.8 Ohm				14.24:1	120 mOhm 150 mOhm 210 mOhm
Hammond Manufacturing 1750E		8kCT	1 dB	Wire Leads			Chassis Mount	15 W			2.085 "	3.25 in	82.55 mm	52.96 mm	70 Hz	15 kHz	453.59 g	1 lbs	Push-Pull Audiophile Ultra-Linear - Tube Output	8 Ohms						150 Ohm 300 Ohm	450 mOhm	2.058 in	52.27 mm	32.61:1
Hammond Manufacturing 1750C		5k 8k	1 dB	Wire Leads			Chassis Mount	5 W	44.35 mm	1.746 in	1.56 in	2.813 in	71.45 mm	39.62 mm	70 Hz	15 kHz	283.5 g	0.625 lb	Single Ended Audiophile Ultra-Linear - Tube Output	3.2 Ohms			1	49.16		314.2 Ohm	295 mOhm
Hammond Manufacturing 1750X		2kCT	1 dB	Solder Lug			Chassis Mount	100 W			4.049 "	3.786 "	96.16 mm	102.84 mm	50 Hz	12 kHz	283.5 g	0.625 lb	Push-Pull Audiophile Ultra-Linear - Tube Output	2 Ohms 4 Ohms 8 Ohms 16 Ohms			1	10.14		5.03 Ohm 7.16 Ohm 12.3 Ohm	20 mOhm 30 mOhm 50 mOhm	3.238 "	85.25 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Box	1	$ 197.59
		10	$ 183.48
		25	$ 176.42

Description

General part information

1750 Series

2kCT Impedance Primary Ohms 4, 8, 16 Impedance Secondary Ohms 11.11:1 Audio Transformer 50Hz ~ 12kHz Chassis Mount

Documents

Technical documentation and resources

1750 Series Catalog Page

Datasheet