3/1/22, 7:09 PM

Audio Broadcast Quality (800A Series) - Hammond Mfg.

https://www.hammfg.com/electronics/transformers/audio/800a

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Data subject to change without notice

Part No.

Application

Nominal Impedance

Max. Primary D.C.

(Ohms)

Unbalanced Current

Primary

Secondary

(ma.)

801A

Isolating, Matching

*50/200

50/200

0.8

802A

Isolating, Matching

*50/200 (60/240)

125/500 (150/600)

0.8

804A

Isolating, Matching, Hybrid

*125/500 (150/600)

125/500 (150/600)

0.5

806A

Dynamic MIC or Voice Coil to Grid

*7.5/30

10K/40K

1.6

807A

Dynamic MIC or Voice Coil to Base

*7.5/30

600/2400

1.6

808A

MIC or Mixer to Single or P.P. Grid

*50/200

10000/40000

0.6

809A

MIC to Mixer to Base

*50/200

600/2400

0.6

812A

Line or 150 ohm MIC to 1 or 2 Grids

*125/500 (150/600)

10K/40K (12K/48K)

0.4

813A

Line or 150 ohm MIC to Base

*125/500 (150/600)

600/2400 (720/2880)

0.4

832A

Interstage (ratio 1:2)

5K/20K

20K/80K

0

834A

Interstage (ratio 1:4)

5K/20K

10K/40K

0

835A

Interstage (ratio 1:1)

10K/40K

10K/40K

0

841A

** P.P. Plates to Line

5K/20K

50/200

0

842A

** P.P. Plates to Line

5K/20K (6K/24K)

125/500 (150/600)

0

844A

** P.P. Plates to Line

10K/40K (12K/48K)

125/500 (150/600)

0

* Electrostatic shield between primary & secondary ** Single plate requires parallel feed. When operating at impedances below nominal, power capability is lower and

the frequency spectrum is shifted downward, conversely, at higher impedances power capability and frequency spectrum will be shifted upward.

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