Transformer - Output, 8 W, Single Ended

Transformer - Output, 8 W, Single Ended

Transformer - Output, 8 W, Single Ended image 1
Transformer - Output, 8 W, Single Ended image 2
Transformer - Output, 8 W, Single Ended image 3
Customer image:<br/>"AK Dave Gillespie DGSE-1"
Customer image:<br/>"New transformer in Motorola 397"
Customer image:<br/>"2 OPT’s in an old Tube amp"
Customer image:<br/>""
Customer image:<br/>""
Customer image:<br/>"That&amp;#039;s great OPT for the price."
Customer image:<br/>"Great tunes now on the 1940Zenith  8S463!"
Customer image:<br/>"50C5 headphone amp"
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Transformer - Output, 8 W, Single Ended image 1Transformer - Output, 8 W, Single Ended image 2Transformer - Output, 8 W, Single Ended image 3
Customer Images:
Customer image: "AK Dave Gillespie DGSE-1"Customer image: "New transformer in Motorola 397"Customer image: "2 OPT’s in an old Tube amp"Customer image: ""Customer image: ""Customer image: "That&amp;#039;s great OPT for the price."Customer image: "Great tunes now on the 1940Zenith  8S463!"Customer image: "50C5 headphone amp"
$20.85
In Stock

Specifications

Power 8 W
Primary Impedance 5,000 Ω single-ended
Secondary Impedance 8 Ω
Primary DC Resistance (Red to Blue) 230 Ω
Mounting Centers 2.375"
Mounting Type U-bracket
Weight 0.7 lbs

Wiring:

Wiring
SKU:
P-T31
Item ID:
003561
RoHS Compliant
Item Height1.606 in.
Item Length2.8 in.
Item Width1.9 in.
Mounting Hole Center to Center A2.35 in.
Mounting Hole Diameter0.187 in.
Mounting TypeU-bracket
Power8 W
Primary D.C. Resistance, blue-red230 Ω
Primary Impedance5 kΩ
Secondary Impedance8 Ω
Packaging Information
Packaging Dimensions2.8 in. × 1.6 in. × 1.8 in.
Weight (Packaging)0.6592 lbs.
GIF: WiringAll Models

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GIF: Wiring Wiring18.69 KB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

4.95 out of 5 based on 39 reviews
joe10 - September 30th, 2023
5 out of 5

significant high frequency notch around 4k-8k, at least on the one i used

RKMc - August 21st, 2023
5 out of 5

The transformer worked in an old battery operated tube radio.

Anthony Windholz - April 10th, 2023
5 out of 5

Worked great thanks Tony

David DeRosier - January 25th, 2023
5 out of 5

Great replacement for my Antique Radio projects.

Rene A Cuevas Negron - March 1st, 2022
5 out of 5

Hi
The audio output Xfmr was installed on 1938 old GE radio and it worked perfectly

Bob Rogers - February 25th, 2022
5 out of 5

Perfect match for the amplifier I am building. Good quality and workmanship.
Good price too.

Benny Rhoads W5TYZ - January 7th, 2022
5 out of 5

I HAVE NOT TRIED THEM YET. I PURCHASED 2 OF THE XFMRS TO BE ABLE TO CONNECT 8 OHM SPEAKERS TO MY VINTAGE HALLICRAFTER AND COLLINS RADIOS.

Wayne Skiba - July 10th, 2021
5 out of 5

Excellent quality great product!

Alfapappy - April 14th, 2021
5 out of 5

Restoring a 1941 Zenith 7s529 radio. The audio output transformer was “open.” Took a chance and bought the PT 31 transformer. Installed the new transformer and the radio came back to life!! The mounting holes do not line up. Made up my own bracket and good to go! Highly recommend this transformer!!

K5RCR - March 20th, 2021
5 out of 5

I have used a bunch of these transformers in a number of single ended audio amplifiers using a variety of final output tubes including the 6F6, 6V6, 6L6 and 12BH7. Projects include a 1939 vintage regenerative receiver, single ended stereo amplifiers and a stereo headphone amp. Testing with a signal generator and an oscilloscope yields a flat response from about 100 Hz up to 20kHz. The roll off is gradual down to about 20Hz. Since my speakers [big Pioneer CS-V9910's] roll off at about 40Hz, these are are ideal , especially for the price. As long as I keep building low-power audio amplifiers, I'll keep using these.