PRO AUDIO PRODUCT SUMMARY
Sowter professional audio transformers A transformer can virtually eliminate most types of noise generated when equipments are connected by preventing "ground loops". Balanced lines may be converted to unbalanced and vice versa. Signal voltage can be increased or reduced and unwanted loading effects can be removed by step up or down ratios. Mumetal cores ensure minimal distortion and a thick Mumetal can protects the transformer from hum fields. Multiple interleaved windings are used for high bandwidth and clean transient response. Faraday shields on most types ensure rejection of common mode noise. We offer a large range of products for recording, broadcasting, public address, instrumentation and equipment manufacturers as well as for replacement or maintenance.

We list our most popular types here but we have a design data base accumumated over the last 50 years and most of these can still be shipped within 3 weeks. "Top 20" (see below) types can normally be shipped from stock. "Canford Audio Stock" items can also be ordered from our distributors:Canford Audio. UK SALES: 0191 415 0205 EXPORT SALES: +44191 415 0044 E-Mail: exports@canford.co.uk

If you do not see what you need here please contact technical support or complete a custom design request form and we will be pleased identify an existing design or do a custom design at no extra charge.

Prices are for Mumetal cored transformers with Mumetal screening can and colour coded leads. Also available in other packages see Pro-package options. Grain oriented silicon iron (M6) cores used where indicated. Types indicated with an asterisk (*) do not have a screening can. PCB Pins instead of colour coded leads are available on most items.

PRO AUDIO PRODUCTS
Type Description Application Ratio Max 50Hz Level dBu Package size Top 20 Stock Canford Audio Stock
4600 High impedance bridging (10k/10k ohms) Low cost 1:1 +12.5 b Yes Yes
3293 General 1:1 +22 d Yes Yes
3575 General 1:1ct +26 e Yes Yes
3232 High level 1ct:1 +31 f Yes  
8920 Twin outputs 1:1+1 +26 f    
4603 Low impedance input/output (600/600 ohms) Low cost 1:1 +3 b Yes  
3292 General 1ct:1 +10.5 d Yes Yes
3603 General 1:1ct +17 e Yes Yes
5069 High level 1:1 +25 f Yes Yes
4652 High level Line output (600/600 ohms) High bandwidth 1:1:1:1 +34 j* (M6) Yes Yes
8403 High CMR 1+1:2 +34 j* (M6) Yes  
8751 Neve transistor Circuit 1:1.5 +31 B (M6)    
9540 Microphone or 200 ohm line input Isolator 1:1 +10 e    
3195 General 1ct:7 +4 d Yes Yes
4935 General 1ct:7 +12 e Yes Yes
9610 General 1ct:10 +12 e    
9045 Recording 1+1:10 +18 j    
9995 Condenser/tube op 5:1ct +38 j  
3678 Tapped 1:9/5/3 +11 d Yes
9760 Ribbon 2 ohm 1:10   b  
8074 0.25 ohm 1:40   b  
9145 Step up/down 300+300/1.2k +1.2k 1+1:2+2 +16 e  
4383 600/10k 1CT:4 +16 e  
8754 30/600 1:4.5 -5 e
4079 2-way splitter / combiner transformers 200 ohm 1ct:1:1 +17 f Yes  
4297 200 ohm 1ct:1ct:1 +17 f    
8088 200 ohm 1ct:1ct:1 +10 d Yes
4679 600 ohm 1:1:1 +21 f Yes
4674 3-way 200 ohm 1ct:1:1:1 +15 h Yes  
9790 100V line monitor 100V/600ohm various 100V A    
4243 Direct Injection 
(DI Box)		 General 10ct:1 +34 e Yes  
8044 High noise 12:1 +29 d Yes
8321 Hybrid Speech 1+1:1.4ct +10 d    
8356 General 1+1:1.4ct +15 e    
8379 Mid-Side to Stereo AB Decoder General 1+1:2ct +7 c    
8392 Headphone 1:1:1 +20 e*(M6)    
9570 Phono cart 3-100 ohms 1:10 +3 e Yes  
9545 DAC to Tube  Twin DACS 1+1:5+5   g    
8285  AES/EBU Digital 110/75 ohms bal to unbal 1.2ct:1 5V p-p
6 MHz		 x