SF Princeton Reverb - Part 3
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- Опубликовано: 28 сен 2023
- Webpage: www.bradsguitargarage.com.au
Facebook: bradsguitargarage
Instagram: / bradsguitargarage
Equipment:
Soldering:
Pace MBT station w/SX100 & PS-90 handpieces
Hakko 474 w/815 handpiece
Hakko 936 w/907 handpiece
Hakko FX-888D w/FX-8801 handpiece
Quick 861DW hot air station
BOFA fume extraction unit
Loctite Multicore solder (C511 / 362)
Test Equipment:
Fluke 11, 175, 177 & 179 handheld DMM's
Tektronix 2236 analog oscilloscope
Rigol DS-1054z digital oscilloscope
BK Precision 4017A sweep / function generator
BWD 160a function generator
HP 6236B triple output DC power supply
Kyoritsu 3132A insulation / continuity tester
Video equipment:
Overhead cam: Panasonic HC-V785 w/Audio Technica AT9946CM mic
Handheld cam: Panasonic DC-G85 w/Olympus M.Zuiko Pro 12-40mm f/2.8
On location cam: Panasonic DC-GH5s w/Panasonic-Leica 9mm f/1.7 & 12-60mm f/2.8
Capture card(s): Magewell HDMI USB, ATEN UC3020-AT, ATEN UC3021
Headset Mic: Audio Technica BP892xcW-TH
Lapel Mic: Rode Go
Editing: Adobe Premiere Elements
Hand Tools:
Wiha, Felo, Stanley screwdrivers
CK & Engineer cutters / pliers
RS Pro wire strippers
Sidchrome & Gear Wrench spanners, sockets & shifters
Veritas planes & chisels
Materials / Consumables:
JJ's / TAD electron valves
Elixir / Ernie Ball / D'Addario / Rotosound strings
Electrolube & DeoxIT cleaners, lubricants & chemicals. 
Наука
Just to clarify, champions:
I know something is not right with this speaker and have suggested a replacement as mentioned in the video.
I don't just comp customers a new speaker without quoting one first, obviously.
The speaker is providing signal, which sometimes makes it hard to convince the customer to replace it if the budget is limited, which is why I recorded the comparison to convince the customer that something is not right.
If they go ahead with the ET10, I have one in stock to replace while they wait and will record some new sound samples for your listening pleasure.
Mighty fine work you did bringing that amp back to life! Thanks for sharing.
15:24 Link Wray has entered the building.
Great job Brad your attention to detail is off the fucking charts
Bro, I said I was going to suggest a speaker replacement to the customer. Other than provide one for free, what can I do? You clearly know nothing about running a business if you think I should just replace a speaker for free without consultation with the customer.
beautiful work, as usual, and it sounds great in the end too.
Actually we started getting cords and equipment with the brown, blue and green with a yellow tracer cords and wiring in the USA well over 40 years ago. The only color codes that are mandatory for USA electrical building wiring are neutrals (grounded conductor) shall be, white, gray or natural rubber color, safety ground (grounding conductor) shall be green or green with a yellow tracer, and a wild leg or high leg on a delta transformer shall be orange. Generally we use black, red, blue and white for 120/280 or 120/240 (orange on the high leg for three phase), and 277/480 is brown, orange, yellow and gray (if it's a delta transformer the high leg is B phase so it's already orange). In facilities with 400Hz military power, the 400Hz was orange, and 277/480 reverts to brown, violet, yellow and gray. Power cords are cords and generally not building wiring. The first brown blue green power cords I saw were on Dan Foss PWM motor speed controllers and soft starts made in Germany. Once inside of a radio chassis RMA dictated that grounds were black. That's usually all DC. In facilities that are overseen by a full time EE, anything goes! !!!!ANYTHING!!!! I have used illegal street ells in places like that. Just run it by the engineer, explain your installation needs, and it flies. It always does for me anyway. Not so much for some other people. No bragging but you don't ask to do stupid stuff for the sake being stupid.
Amazing workmanship
Your clients get what they pay for! You do amazing work and that's why you stay busy😎
Very impressive result!
I bloody love a princeton! great video
Brad, that was GLORIOUS work on that amp. You did an AWESOME job on cleaning and degreasing that chassis, sounds incredible. Well done Mate and have a brew, Cheers!
Well doneBrad! I did just that with a AB568 Vibrolux Reverb a few days ago....
I recently ran into the same problem with the filter cap can on an Eico HF85 compact preamp. There was no room to install capacitors under the chassis, so I used an electricians hole punch to enlarge the mounting hole and added a clamp. I agree that the cans will be going away and should be avoided when possible. I will point out that some very good (new) tab style cans from CE manufacturing are available from Antique Electronic Supply here in the States. Another company Hayseed Hamfest will build cans to order and do a very respectable job. You do excellent work, which is hard to come by. Keep it up.
Wow, that amp was a real stinker. You are a magician.
Looks so much cleaner. 👍👍
After all that re-work, I would want that shazzy signed by you Brad, it would only add value! dump a Sheffield 1230 in there and it would be perfect!
Very nice work, Brad! makes me want to find one of these in so-so condition for a good price and restore it. Sounds like a fun project!
Fuck Wes, it could make for a lifer-amp mate. These things sound classic.
13:07
Brad: "So yeah ... shitty JJ and shitty Pannie-boy focusing. What's new?"
Pannie-boy: * one-finger salute *
Big ups from Washington DC!
Such beautiful work! Don't know if it was financially worth fixing it but from a viewers point of view, what a product of love and expertise!
Mate, you can't put a price on an amp which will faithfully perform for the rest of your life!
Very good work. Does seem to mud up and distort a bit too soon with that particular speaker imho. Love that it will probably out live me now so others can feel what it was really about. Like a classic car.
Awesome work Brad! Better than it was new. I've had two more JJ failures recently.
Yeah, stay away from them for now, mate.
I don't care what the fanbois say!
3 B’s ! Beau Boulot Brad ! (great job Brad) 👍
I’ve been aimin for 420, too. Just had to adjust my bias pot!
Always a fun vid Brad, great attention to detail. Just a thought; I have a SF Princeton of about the same vintage with the international voltage taps, and UK mains voltage is often up to 250v. I notice that you have the red/ black tap on the Mains OT taped up; on my amp that tap is for for a 260v input. Using that tap instead of green/ black knocks the HT down to a reasonable 400 or so, and htrs still run around 6.2 ac. Maybe worth a try?
Someone killed that poor speaker. Fat Jimmys usually sound great, but that voice coil is toast.
It's good to know that isn't what it is supposed to sound like 😂
Yeah, it's not a happy speaker.
Aloha and Mahalo Brad!
There has to be something wrong with that speaker. Sure, the Fat Jimmy line may be a little more muted and “creamy” than the actual WGS offerings, but they don’t sound like that normally. I’m wondering if the VC is rubbing/misaligned or the frame was bent somehow.
I can’t recommend the Jupiter M10C enough for Fender amps. I run the P version in my 66 Super and think they sound better than the CTS Alnico 10”. That’s a very, very hard thing to do. I’ve even tried a quad of Celestion Alnico Golds in it and they didn’t cut it.
The standard WGS G10C is fantastic too! They really have become my favorite manufacturer of modern speakers in the last couple years. Especially with the Jupiter branded offerings.
Anyways, fantastic job on this amp Brad!
Yeah something not right there, mate. I've never seen this speaker before, so wasn't sure if it was just shit or not, but looking up sound samples from others, it's not anything like it.
I must confess my jealousy. Even with a questionable speaker, the newly repaired SFPR sounds way better than mine. I did recone the original Fender speaker, but the “sounds cruddy above volume at 2” problem lingers. Fascinating stuff: on to part 4!
Hell, I'm gonna ship Brad SOMETHING just to get that little BGG leather badge.
Hello my brother. Looks like one of these Texasa drunk monkeys moved to Aussy. Good Day Mate From Texas
My god that Fat Jimmy sounds like a line in without an impulse response. Great if you’re going for that ‘direct to desk tone’ but certainly not ideal in a Princeton style circuit.
Hey brad do you recommend using standby on a vintage deluxe love to hear your thoughts on it either way. Happy grand final day buddy
thats a whole new boutique amp, great work! how much did it cost?
Another classy transformation Brad,late to the party again,bloody work. Certainly earn your dollars dont you. Be good,and think happy thoughts
Brad, what do you mean degreasing?
That's what I call brought back from extinction. That munted mess of discarded components is trestimony to the workmanship. Was that my phonecall from earlier in the week? Sorry if it was!
Bruh how many beers deep were ya by the end of this lol.....
When I was a touring player, I tried JJ tubes and they would not hold up to the Marshall amps.
I liked the EL34II before the glass started cracking.
Easy enough to make a new board and get rid of all that grease forever.
That waveform at around 10:45 looks like an HM-2 waveform. What’s the problem?
No problem at all, sir! Hahaha!
What is the cause of the wax build up? is it just from old leaky caps ? thats what Im thinking
Not an expert here by any means but it was something fender did from the factory. I think the idea was to prevent build up of moisture in the board which would warp / bend it.
I’ve never liked JJ in that position, usually have premature failures. Generally tungsol seem to be happy in there from what I’ve found. I’m watching this while cooking dinner 😂
GREAT WORK been down the rabbit hole on bassmans and they stopped making sound
one was cooked real bad two I rebuilt but no sound. DRIVING ME BONKERS.
i thought the board on one of mine was GREASY bad and its never ever worked again
I made new boards tested the parts and still no sound redid new boards entirely new parts
still no sound.. Should have joined the fkg bmb squad instead it would be over with quicker.
fk me its maddening... one that came in it blew out at cap board arched through wiring pin hole in wire or something blew across through phase inverter and down the heaters ROASTING the amp and stopping at the STAND OFFS on v1 v2 Guy said the club had bad power NO KIDDING LIGHTNING STORM INSIDE THE AMP.........
I think that msy be a FArT Jimmy.
Great video. Ugh! That Chubby James speaker doesn't work with this amp.
I'm not suprized that that WGS speaker sounds terrible. A few years ago someone recommend that I get WGS Veterans 30, instead of my favorite Celestion Vintage 30's for a 2 x 12" cabinet for my 50 watt Plexi. The WGS speakers were unusable (very nasally and harsh sounding to my ears). Never again....
To be honest I think the Vintage 30s sound about the same, especially the ones made past the mid 90s.
Some of my favourites are the 80s G12T75’s. They’re nothing like the modern ones. The earliest ones from 84’ with the vents are supposedly identical to the G12-65 and were just renamed to use up stock. I own an 88’ Marshall cab with speakers from the same year, sounds amazing!
Sorry not to my ear (been playing nearly 50 years). Celestion speakers have never let me down, and that includes old and new versions of their speakers. I took a chance with WGS speakers and I got burned. I was able to return them, but I got stuck paying over $50 US to ship them back. @wastewoodrockers5526
@@jrumiano Fair enough, everyone’s got a different ear for things. I’ve had no experience with the WGS stuff so I really can’t comment on it. Sucks about the shipping fees though.
Sorry I mis-read your comment, I thought you were comparing the WGS to Celestions. 👍@@wastewoodrockers5526
The fat jimmy sounds good tbh...
If by “good” you mean the suspension and surround of the cone sound torn and the voice coil probably tried to weld itself to the magnet then yes.
Tone grease
Also 21:02 is almost the entire reason I hang out here, well executed. A- grade, missed opportunity though since the speaker name is begging to be included in that joke.
For Fender Twin Retards, and other amps with greater than 500 VDC B+ I am using two 350 volt radial caps in series with 240K or 270K balancing resistors. $33 for a Sprague Atom with a 65 degree C rating and 5000 or 6000 hour lifespan? NO THANKS! With the Nichicon, Chemicon or Panasonic radial caps I get 12,000 hours @ 105C for 85-90% less money. That is almost 3x better for more than 80% less money.