SOWTER AUDIO TRANSFORMERS
REDD47 REPLACEMENT OUTPUT TRANSFORMER

SOWTER TYPE 9980 - BUY

7:1+1 Exceptional performance Output Transformer. For REDD47, Drip "Four Seven" etc

9980 frequency response
TRIAD HS-29 replacement

APPLICATION. Recording quality output transformer designed for this excellent amplifier originally used by the Beatles at Abbey Road.  Ratio 7: 1+1. Can be configured for 500 or 150 Ohms nominal output imprednce. Very large core 50% Mumetal and 50% M6 and thick Mumetal can. Colour coded leads. Must be ac coupled to prevent dc in the primary.

FEATURES Combination core ensures minimal harmonic distortion and exceptional level and bandwidth. The M6 part of the core seamlessly "takes over" for low frequency high level signals. Multiple interleaved windings ensuring exceptionally high frequency response. Very low phase shift ensures excellent transient response. Mumetal can for magnetic shielding. Threaded grommet and M3 fixing screws options. For dimensions click HERE
RATIO
7:1+1
FREQUENCY RESPONSE (Typical) 600 Ohm source 50 K Ohm load
3 dB 5 Hz and 100 KHz
PRIMARY INDUCTANCE (Typical)
220 H
DC RESISTANCE (Primary typical)
580 Ohms
DC RESISTANCE (Secondary typical)
41 Ohms
MAX LEVEL at 50 Hz
+33 dBu
Sowter Phase splitterr
9980 Connections