EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

mike hadley
  • Hitchin
  • United Kingdom
Share on Facebook

Mike hadley's Friends

  • Michael Lawton
  • Scott Dickson
  • Fran Mayer
  • Troy Taylor
  • Robert Feenstra
  • Brad Winder
  • Matt Endicott
  • Jon Ketron
  • Russ Webb
  • Joseph W Strickland
  • Kenneth Chaffin
  • jonathan dollimore
  • Auroraoldradios
  • John Chidgey
  • Scott Seickel

mike hadley's Discussions

Making a field coil speaker

Started this discussion. Last reply by mike hadley Jun 13. 3 Replies

After rebuilding both permanent magnet and field coil speakers the next step for me was to build a field coil speaker from the bottom up,besides there is an awful lot of radios out there without the…Continue

30 into 23 will go

Started this discussion. Last reply by Thomas Day Sep 24, 2019. 3 Replies

I thought that I would like to share the last installment of my Philharmonic,the cabinet started life as an Allwave 23 Tasman, but the radio has sadly long gone, and there was some horrible…Continue

Mcmurdo silver masterpiece v

Started this discussion. Last reply by mike hadley Aug 9, 2019. 4 Replies

Can anyone please help,I have recently managed to get my hands on a masterpiece v, but unfortunately someone in the past has removed the bass boost inductors from the output of the expander circuit,…Continue

Scott logo

Started this discussion. Last reply by Jon Ketron Aug 7, 2019. 3 Replies

Can anyone please help,I need a fairly good photo of the Scott logo from the rear of a speaker, the idea is to reproduce the artwork and make it available on this site,thanks in advance.MikeContinue

 

mike hadley's Page

Latest Activity

mike hadley replied to John Chidgey's discussion VR NE42
"Hi John, Try ebay, there are two for sale at the moment, ebay No.185121023630 and 194221136216, postage is not cheap, Mike"
Oct 22
mike hadley replied to Forrest Wagner's discussion EH Scott Phantom Deluxe knobs
"I posted this a few years ago, but nit everyone has access to a lathe, https://ehscott.ning.com/forum/topics/wooden-knobs"
Aug 3
mike hadley replied to Forrest Wagner's discussion EH Scott Phantom Deluxe knobs
"Any chance of a photo?"
Aug 2
mike hadley replied to norman david warren's discussion Scott aw-15 speaker repair
"The speaker you have is desirable and repairable, to quote Dave, remove the heavy cast cover, the field coil is more or less a smoothing choke for the power supply and a transformer for the 2A3 bias, hopefully the wires are damaged and not the…"
Jun 29
mike hadley replied to mike hadley's discussion Making a field coil speaker
"Hi Brad, Cast baskets are fairly easy to find, I managed to pick up a dead cast 18" speaker yesterday from eBay for $10, there are cheaper Chinese stamped baskets available I did use one on a Stromberg Carlson a while back I would have been…"
Jun 13
Brad Winder replied to mike hadley's discussion Making a field coil speaker
"Wow! Amazing!  For a larger speaker, will you try to find a cast basket? Seems they would be super difficult to find, since by the time the large 12" and 14" speakers came out in the later 30's everyone seems to have moved to…"
Jun 13
Scott Seickel replied to mike hadley's discussion Making a field coil speaker
"Looks good Mike.  I was wondering what you were up to, you been too quiet. "
Jun 12
Scott Seickel liked mike hadley's discussion Making a field coil speaker
Jun 12
mike hadley posted a discussion

Making a field coil speaker

After rebuilding both permanent magnet and field coil speakers the next step for me was to build a field coil speaker from the bottom up,besides there is an awful lot of radios out there without the correct speaker, yes I could have repurposed a field coil speaker from another radio, but field coil speakers are beginning to get expensive, and in some cases the cost is prohibitive. I have used resistors in the past but not anymore. There is a good article called project Ryu, the author covers…See More
Jun 12
David C. Poland replied to mike hadley's discussion 7 pin socket problem
"Nice. And nice you left the amp untouched and used an outboard conversion socket shown. Note: the Jones socket and Jones plug of later 1941 production include house AC to and from the power switch on the volume control. (So does the Jones plug for…"
May 2
mike hadley replied to John Chidgey's discussion Scott Phantom Speaker plug
"Hi John, I did this for my Philharmonic, https://ehscott.ning.com/forum/topics/7-pin-socket-problem Mike"
May 2
mike hadley replied to Kent King's discussion Scott speakers
"I thought that I would post this, it ties in with the comments Norman made earlier, I found this years ago, cant remenber where but it was pre internet days. Decide what primary impedance you want. It might be 5200 ohms for an EL84. Divide by…"
Apr 29
mike hadley replied to Kent King's discussion Scott speakers
"Using a power transformer for tube output does work surprisingly well, there is a lot of talk about saturation and frequency response, I have even got away with using a small txt in a single ended application, (240v to9 9v), its all about primary to…"
Apr 25
Scott Dickson replied to mike hadley's discussion philharmionic bezel spring
"Hi Mike, I was wondering if you had any success in reproducing a dial bezel or eschuteon for a Philharmonic?  I hope so.  Let me know when you can.  Thanks so much. Scott Dickson "
Apr 10
mike hadley replied to Karl Sherwin's discussion Will a Welllington cabinet fit a FM Philharmonic?
"Karl, the philharmonic is a deep chassis, it will hang out of the cabinet a little, I used a Tasman cabinet that originally housed an allwave 23' the Philly stuck out about an inch or so, I made a removable frame to cover the chassis I also…"
Feb 9
mike hadley replied to Karl Sherwin's discussion Will a Welllington cabinet fit a FM Philharmonic?
"Scott, this has got to be one of the most boring photo's ever, it' an off cut from the plywood I used for my philharmonic  A shade under 9mm (sorry it's metric again) Mike"
Feb 9

mike hadley's Photos

  • Add Photos
  • View All

Comment Wall (2 comments)

You need to be a member of EH Scott Radio Enthusiasts to add comments!

Join EH Scott Radio Enthusiasts

At 6:29pm on February 28, 2020, mike hadley said…

Thom;

Thank heaven for Hammond, my Mcmurdo v had the tone stack hacked out, long before the set came into my possession, I ran the tone schematic through ltspice to get the inductor values, Mouser provided.

I now have accumulated parts to build the combined psu and amp, luckily I have enough bench supplies to prove the radio is working.

I quite often find that if you keep chipping away, rather than tearing into a project, it allows thinking time. This helps to find the best way around a problem.

And as you know I found a way around the seven pin socket problem for my Philly a while ago.

Mike

At 5:27pm on February 28, 2020, Thomas Day said…
Mike: Nice power supply. I can source a similar used Heathkit supply here on Ebay.
I worked for them from 1967 thru 1974. I left in 1975. Here, Hammond transformer company makes suitable transformers for tube equipment at reasonable prices. I also have several Hammond organ Leslie amplifiers that have a balanced input. Since I would also need 6.3 volts at 5 amps for the filaments, a complete transformer supply would be better. When I bought my Allwave 23, the one question I didn't ask was does it work? The answer as I found out was no. The power transformer had a shorted winding. Thru this list I was able to find a company in Michigan that could wind a new one. Took several months, and since we go the Muskegon Mi. in October, and the company is on the way, I was able to pick up the new one. Minor construction differences required a custom mount, but it works just fine. For my needs, I would only need the tuner B+ and -20 volts for the bias circuits. I would also need to source the 7 pin socket to match the tuner plug. Since it is different from the standard 7 pin, that could be hard to find. I enjoy your posts on restorations.
 
 
 

© 2021   Created by Kent King.   Powered by

Badges  |  Report an Issue  |  Terms of Service