Search found 142 matches
- Fri Mar 23, 2018 11:08 pm
- Forum: Garage Talk
- Topic: Health problems, soldering fumes/rosin core fumes/smoke
- Replies: 7
- Views: 937
Re: Health problems, soldering fumes/rosin core fumes/smoke
A jeweller my wife buys from just died after years of ill health from solder fumes. I told her about halogenated flux fumes and tried to talk her into a smoke evacuator 2 years ago. She was not willing to "go to the trouble". That's too bad. I should have known better. I did use a fan to blow the f...
- Wed Mar 21, 2018 11:19 pm
- Forum: Garage Talk
- Topic: Top 100 things to do if you dislocate a shoulder
- Replies: 22
- Views: 1771
Re: Top 100 things to do if you dislocate a shoulder
Dislocated rt shoulder June 2016 I think it was. Five days later a 3/4" dry wall ceiling hatch fell out of my garage ceiling (I was trying to opening it with my good arm using a broom stick, I know, I'm a genius) and it landed square on my nose and just frickin' smashed it, for like the 5th time. Th...
- Mon Mar 19, 2018 5:20 pm
- Forum: Garage Talk
- Topic: Health problems, soldering fumes/rosin core fumes/smoke
- Replies: 7
- Views: 937
Re: Health problems, soldering fumes/rosin core fumes/smoke
You're not wrong. There's a reason that anyone that solders for a living uses evacuation systems to pull the fumes away. I started experiencing flu-like symptoms every time I'd spend a day soldering. I read up on it and found it's really bad. I already have asthma, so I was fast to get a good fume ...
- Sun Mar 18, 2018 10:45 pm
- Forum: Garage Talk
- Topic: Health problems, soldering fumes/rosin core fumes/smoke
- Replies: 7
- Views: 937
Health problems, soldering fumes/rosin core fumes/smoke
I hope I'm completely wrong about this, but I have a strong suspicion that the rosin fumes are really bad stuff. Diethylene glycol dibutyl ether is listed as a hazardous substance that can cause lung damage and skin irritation.
- Mon May 23, 2016 2:47 pm
- Forum: Trainwreck Discussion
- Topic: tightening up the trainwreck lowend
- Replies: 51
- Views: 16274
Re: tightening up the trainwreck lowend
Try reducing C1 to 10uF or 5uF, and/or similarly C7. That will trim some of the low-end. That is exactly what I would recommend. A 10 uF in V1 cathode bypass works wonders, I use one in 2nd stage as well and it removes flubbiness almost entirely. I use a 10 uF/2.2K bias resistor for EF86 cathode by...
- Sat Nov 21, 2015 9:39 pm
- Forum: Technical Discussion
- Topic: parallel triode question
- Replies: 17
- Views: 23075
Re: parallel triode question
Whether or not a parallel triode stage has more gain than a single triode stage depends on the rest of the circuit. And don't worry about losing any 2nd harmonics - the signal just doesn't get big enough on an input stage to see that effect. If you have a typical input stage, want to keep the same ...
- Tue Sep 22, 2015 8:15 pm
- Forum: Technical Discussion
- Topic: Best 15-18W EL84 power transformer?
- Replies: 4
- Views: 2385
Re: Best 15-18W EL84 power transformer?
Are we taking class A PP and will it be cathode , or fixed bias? Does the future owner want real good dynamic range and large peak power, or us a amp a bit on the soft side more towards his / her needs? If the amp will use just two or three preamp tubes than the Hammond 270fx with its 173 ma of cur...
- Tue Sep 22, 2015 4:39 pm
- Forum: Technical Discussion
- Topic: Guitar Buffer Issues with Amp
- Replies: 14
- Views: 1748
Re: Guitar Buffer Issues with Amp
Hey, are you sure when you use the buffer that your input's grid still has a ground reference, ie. a resistor to ground? Maybe a bad solder joint on the 1M input grid leak or no resistor at all? It would work with just the guitar but not with a buffer that has an output cap and no resistor to groun...
- Tue Sep 22, 2015 4:14 pm
- Forum: Technical Discussion
- Topic: Best 15-18W EL84 power transformer?
- Replies: 4
- Views: 2385
Best 15-18W EL84 power transformer?
I may need to build a custom amp for someone and this has to have the very best of transformers, components, etc. What do you consider to be the best 15-18 W power transformer, also, what is considered to be the best output transformer? The amp I'm building is not a typical 15 or 18 watt design, but...
- Mon Mar 09, 2015 10:56 pm
- Forum: Technical Discussion
- Topic: amp chassis, unpunched
- Replies: 17
- Views: 2485
Re: amp chassis, unpunched
Those seaside chassis are incredibly inexpensive. Who can work for at least an hour for cutting/bending/drilling/bolting or screwing plus aluminum sheet cost plus tool amortization for $41? That guy risks more and earns less than working at local Mc D :shock: Only way to be justified is that he mak...
- Mon Mar 09, 2015 6:25 am
- Forum: Technical Discussion
- Topic: amp chassis, unpunched
- Replies: 17
- Views: 2485
Re: amp chassis, unpunched
IMO, it's a cut throat business. You have to compete on price and materials, shipping, too. Do tell, what have you got in mind for your wares? Curious minds want to know. We all need a good quality, cost effective choice. I think you're right. With shipping, tooling, and materials going up in price...
- Mon Mar 09, 2015 2:01 am
- Forum: Technical Discussion
- Topic: amp chassis, unpunched
- Replies: 17
- Views: 2485
amp chassis, unpunched
I'm wondering if there is someone making custom blank chassis. Thanks for any info,
Rick
Rick
- Fri Jan 23, 2015 5:25 pm
- Forum: Trainwreck Discussion
- Topic: Wierd sound from my Express, need help PLS !
- Replies: 14
- Views: 2397
Re: Wierd sound from my Express, need help PLS !
The video was showing no guitar plugged in the the input. does it change if a guitar is plugged in,with guitar volume down. If the jack is a switching type, and is not making contact on the close part, or with no guitar plugged in, it could be causing a noise problem. Sometimes the switch contact g...
- Mon Jan 19, 2015 4:20 pm
- Forum: Trainwreck Discussion
- Topic: A Rockster Variant Mutant Donster Monster
- Replies: 38
- Views: 6276
Re: A Rockster Variant Mutant Donster Monster
I've had a case or two where the fil V was a tad too high. Preamp filaments were opening up prematurely. Keep it as close to 6.3V as is feasible. I may have even paralleled some ceramic 1 ohm resistors and put a pair on each leg. It's been a while, memory ain't what it used to be. Another trick to l...
- Sun May 09, 2010 10:38 pm
- Forum: Technical Discussion
- Topic: Marshall 50 JMP Hum - Heater Filament Pot Candidate?
- Replies: 29
- Views: 12312
Re: Marshall 50 JMP Hum - Heater Filament Pot Candidate?
Have a qualified tech check out the filter section to see if any of the caps have gone bad.