70V 15W Line Matching Transformer

70V 15W Line Matching Transformer

Overview
Constant voltage, isolated line matching transformer for use with public address amplifiers utilizing a 70.7 volt carrier line for sound transmission. Frequency response: 40-20,000 Hz. Secondary impedance: 4 or 8 ohms.
Part # 
300-039
Weight: 0.9 lbs.  
IN STOCK
Your Price
$6.25
Buy 10-up$5.79
Part # 300-039
Qty:  EA
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Product Details

70V 15W Line Matching Transformer
Constant voltage, isolated line matching transformer for use with public address amplifiers utilizing a 70.7 volt carrier line for sound transmission. Frequency response: 40-20,000 Hz. Secondary impedance: 4 or 8 ohms. Tap at 5 W, 7.5 W, 10 W and 15W. Minimum efficiency: 80%. Mounting holes: 2.75" (center to center).


70V 15W Line Matching Transformer
  • BrandParts Express
  • Part Number300-039
  • UPC844632014437
  • Product CategoryLine-Matching Transformers
  • Unit of MeasureEA
  • Product Rating
    (13 Reviews)
  • Weight0.9 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Similar Products

View similar products to the 70V 15W Line Matching Transformer
in the Line-Matching Transformers product category.

Reviews

70V 15W Line Matching Transformer
70V 15W Line Matching Transformer is rated 4.5385 out of 5 by 13.
Rated 5 out of 5 by from Works GreatWe buy these often and they are easy to assemble and well worth the price. Nothing but good things to say about this product.
Date published: 2014-03-05
Rated 4 out of 5 by from Nice TransformerI was surprised how nice this transformer is compared to others. It's labeled, so no need to carry around a reference when using a bunch of these. I bought two of these to use with ceiling speakers that already had transformers on them. Very good deal.
Date published: 2012-03-10
Rated 5 out of 5 by from Used to match 600 ohm output to a 3.2 ohm speakerI used this transformer to match the output of an older tube short wave receiver. The radio has 600 ohms out. I measured the turns ratio and then calculated which taps would match the best. I used the 5 watt input tap and the 8 ohm output tap. The transformer works fine and the sound on the old tube radio is great.
Date published: 2012-02-27
Rated 5 out of 5 by from Great cheap transformerPut these on some 8 ohm horns for a bowling center pit call system. Worked like a charm and loud too! Although one was bad when I got it parts express replaced it free of charge and shipped it fast too! Would highly reccomend to anyone building a 70v pa system
Date published: 2012-02-17
Rated 5 out of 5 by from Worked like a champAlthough they never transformed into a new Camaro, they did sound pretty good.
Date published: 2011-11-12
Rated 5 out of 5 by from Good valueI needed a 600 ohm to 8 ohm xfmr for some old military gear. This worked great.
Date published: 2011-11-12

Product Q&A

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70V 15W Line Matching Transformer

What are the dimensions?

Can someone please post the dimensions for these transformers, both with and without the mounting brackets. I need to know if they will fit mounted upright into part #320-718
Asked by: albrittbrat
The transformer body is 2-3/8" wide, 2" high and 1-7/8" thick when measuring the coil itself. The mounting tabs add an inch to the overall width.
Answered by: MattP
Date published: 2014-04-11

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