FD9: 1959 Fender Deluxe Tweed: 108 Output Transformer, Frequency Response 

I limit my comments to equipment that I have actually worked on in my shop and can validate the parts as being original. The '59 I had in my shop was 100% original in parts (except the preamp tubes). I haven't worked on a 5B3 yet. It would not be out of the realm of possibility for Fender to have also used Stancor or Thordarson, because they were the "big guns" and marketed heavily in all areas of consumer and military electronics.

Thank you!

I am working on your request. Please give me a few days and I hope to have you a source, reference number and cost for a "108" that is wound and built as a near clone. I have sent him the measurements for this 108. Thank you for watching my video series.

@@deepblueharp ​ ​ THANK YOU so much!! You seemed like such a nice helpful person in the vid!! Where do i contribute to you….Patreon? I cant tell you how helpful this is!! I was looking hard at Soursound SST 108 and Mercury Magnetics FTDO-15M Do i have a 4 and 8 ohm option with your source Jim? Thank you so very much! Pls let me know where to show appreciation and support channel! Have a nice weekend. Take as long as it takes! Mike

@@deepblueharp the lesser volume is perfect for what i am looking for. So glad i came across your site. Ill leave you be now…. thanks again

@@deeem-tee799 The trick to a blues output transformer is to have it saturate (keep the laminations as thin as possible), have either a 4 or 8 ohm output and load the plates right at their the recommended loading on the plates. The larger the load, the more fidelity there is. The thicker the lams the more fidelity there is. On the downside of a blues output transformer is that they overheat. There is a balance. Remember, the amps folks like for playing blues were made on the cheap. They were not intended to last long. Sort of a "throw-away". Universal transformers with multiple taps on the primary and/or secondaries are not suited for blues.

The 6V6GT P-P tubes would need between 8K and 10K loading. A 14K is a heavier load and a heavier load is better for fidelity.

@@deepblueharp ok, got it. Pls keep me posted onvhow the manufacturer sourcing is going . By the way , would 55’ iron be better to custom wind OT on? Or doesnt it matter. If so, i have a 1955 deluxe size OT they can wind on.

@@deepblueharp pls keep me posted on how the 108 sourcing is going. Pls excuse the typos. Do you need tubes ? I guess you dont have a patreon page…i do have a decent tube stash. I d gladly share. Pls take a listen to : 1957 Les Paul played by Joey Landreth on youtube. Thats the wonk im after ….hope your 108 source can get close or nail that lovely Blues tone for me. I REALLY appreciate your time and help Jim!! I have a couple Sangamo tone cap if you re interested.

@@deepblueharp i meant : according to Mercury Magnetic’s early tweed OT is 14K. I think a 108 clone from your source will sound stellar! Im not swimming in $$$ but i may order more than 1 being that you mention they tend overheat creating the sought after tone. How many hours can i expect to get out of the OT your source ? If they are approx $50 or so….i may order a back up depending on how long i can expect them to last.

@@deeem-tee799 Please email me. My email is on my channel under the About tab.

I import the waveforms from the oscilloscope to my PC and run my Fourier Signal Analysis. The analysis program confirms the fundamental frequency and calculates all the harmonics along with their magnitude. From the analysis I can then recreate the signal on my PC for use in tube design.