PACKAGE PART NUMBER

SOWTER TYPE 1478 (replaces 7456)

HIGH PERFORMANCE INPUT TRANSFORMER
Replacement for Marinair  ZUTT012a

2 x M3 holes centre leads side 1478-F
Threaded grommet 1478-E

FREQUENCY RESPONSE measured using 600 ohm source and 15k ohm load

Sowter 1478
APPLICATION Exceptionally high level, high bandwidth, low distortion 600 ohm or 200 ohm input transformer. Suitable as replacement for original transformer in Trident A range, B range, Fleximix  and other vintage recording studio units.   No uncancelled dc permitted in primary or secondary windings.
FEATURES Unusually 70% Mumetal/30% M6 laminated core for minimal distortion even at very high levels. Very high inductance ensures an input impedance of at least 1000 Ohms over a wide frequency rqange when the secondary is loaded with 50K Ohms. Heavy Mumetal screening can to ensure immunity from hum fields. 
Voltage ratio 1:5.9
Bandwidth (-3 dB points, typical) 5 Hz to 50 kHz
DC resistance (primary) 80 ohms (approx)
DC resistance (secondary) 2370 ohms (approx)
Primary inductance (approx) 15H (approx)
Max. input level at 50 Hz +20 dBu
Total harmonic distortion 0.002% at 1kHz


 
E A Sowter Ltd, The Boatyard
Cullingham Road
IPSWICH IP1 2EG England
Tel: +44(0)1473 252794
Fax: +44(0)1473 236188
E-Mail sales@sowter.co.uk