Hammond Mfg. - Broadcast Quality Audio Transformers

Audio
Broadcast Quality
Sealed (850 "A" Series)

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Key Features (850 "A" Series):

Deep-drawn steel case with tin plated finish, with two convenient 6-32 mounting studs with mounting hardware.
Sealed case and wax potted core internally for stable characteristics and long life.
Wide frequency response +/- 0.5 db max. from 20 Hz. to 20 Khz. (except units over 5K ohms impedance, may be down 1 db @ 20 Khz.)
Insertion loss of apx. 1 db.
Maximum power level +15 dbm. with specified characteristics, or higher levels with reduced low frequency performance.
Distortion is apx. 1.5% @ 20 Hz. under full power.
Electrostatic shield between pri. & sec. connected to the green lead.
Humbucking construction
Balanced split windings on pri. & sec. for circuit versatility. Primary may be used as a secondary and vice versa for impedance matching.
Overall dimensions "B" = 1.7" (43.2 mm) x "A" = 1.2" (30.5 mm) x "C" = 1.65" (41.9 mm) high max. Mounting hole centers "D" = 1.32" (33.5 mm).
Includes mounting hardware.
Shipping weight 0.4 lb. (0.18 kg).

Part Number	Application	Nominal Impedance		Nominal Resistance +/- 20%
Part Number	Application	Primary	Secondary	Primary	Secondary
850CA	Emitter or MIC to Line	12/48	150/600	6	70
850EA	Emitter or MIC to Line	50/200	150/600	27	68
850GA	Line Isolation or Hybrid	150/600	150/600	71	71
850HA	Line Isolation or Hybrid	150/600	300/1200	70	140
850JA	Output to Line, or Line to Base	150/600	1200/4800	69	570
850LA	Output to Line, Matching or Bridging	5K/20K	150/600	2240	69
850NA	Output to Line, Matching or Interstage	150/600	10K/40K	65	4980
850QA	Interstage or Isolating	10K/40K	10K/40K	4890	4980

Mechanical & Schematic Data:

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