Search found 726 matches

by Aurora
Mon Feb 12, 2024 5:30 pm
Forum: Dumble Discussion
Topic: PC backing boards
Replies: 3
Views: 143

Re: PC backing boards

I thought so... just had to ask... 8)
by Aurora
Mon Feb 12, 2024 2:47 pm
Forum: Dumble Discussion
Topic: PC backing boards
Replies: 3
Views: 143

PC backing boards

Some over two years ago I started an ODS build... for several reasons it went into a halt before last summer, but now it's time to get going again... I made the larger boards mysellf, with eyelets, and bought a set of the smaller bords from a vendor here.. these were delivered with blank backing boa...
by Aurora
Fri Aug 04, 2023 11:04 pm
Forum: Dumble Discussion
Topic: 2nd gen chassis and pcb design?
Replies: 60
Views: 25300

Re: 2nd gen chassis and pcb design?

Somehow I think this "period correct" thing sometimes goes passed logic... If a "period" part is technically inferior.. why keep it? An interchangeable / detachable power cord would be an absolute benefit over the "old fashioned one.... and an absolute minor mod' to the design.. Just my 2 c's....
by Aurora
Sat Jul 01, 2023 8:48 pm
Forum: Trainwreck Discussion
Topic: Type of wire
Replies: 34
Views: 12528

Re: Type of wire

Sorry, mate.. we have to agree to disagree... :wink: the Audiophools have been at this for years, with "this wire sounds better than that", "silver conductors sounds cleaner"... the list is endless... Not that I have anything against solid core from a technical POV.. my objections are mainly based o...
by Aurora
Tue Jun 27, 2023 8:39 pm
Forum: Garage Talk
Topic: Amps that would be cool
Replies: 6
Views: 1517

Re: Amps that would be cool

Sorry for my ignorance, - but UP ??
by Aurora
Sat Jun 24, 2023 9:53 pm
Forum: Garage Talk
Topic: Easy way to make a chassis
Replies: 2
Views: 1405

Re: Easy way to make a chassis

Well... that's a useful procedure.... making the tiny grooves where you want to fold is a very good idea.. steel or alu is just the same... Cheap or home made brakes will almost always have accuracy problems..... But of course... take your time, be accurate - or make a really good and accurate break...
by Aurora
Sat May 27, 2023 9:32 pm
Forum: Trainwreck Discussion
Topic: Type of wire
Replies: 34
Views: 12528

Re: Type of wire

Solid core wire really has nothing to do in portable equipment. I agree with those suggesting teflon coated, mainly because of the higher temp's and voltages in tube based eqpt. Although I realise I may be shot down on this 8) , tonality of hook up wire is mostly imaginative, but given the fact of h...
by Aurora
Sat Apr 08, 2023 8:59 pm
Forum: Speakers and Cabinets
Topic: ODS head
Replies: 19
Views: 4802

Re: ODS head

Hey!! - Nice thread!.... I'll be facing the same job shortly...
by Aurora
Wed Nov 16, 2022 9:51 pm
Forum: Technical Discussion
Topic: Options to replace odd cap value
Replies: 55
Views: 3127

Re: Options to replace odd cap value

I've spent my whole working life in electronics, ranging from audio to radar, with some electrooptics in between...
Gyrators has nothing to do in power supplys. Get caps at or slightly above the old value that needs to be replaced, with a suitable margin for voltage.
by Aurora
Fri Jul 01, 2022 12:49 pm
Forum: Technical Discussion
Topic: Magnatone Panoramic Stereo amp
Replies: 2
Views: 502

Magnatone Panoramic Stereo amp

Anyone familiar with Magnatone Panoramic Stereo amp , and can point me to a schematic??? SS or tube rectifier??
I have searched, but to no avail...
by Aurora
Tue Feb 15, 2022 8:47 pm
Forum: Speakers and Cabinets
Topic: EVM12 cab alternatives..
Replies: 7
Views: 3503

EVM12 cab alternatives..

I managed to get hold of an EVM12 locally, for project I'm working on... have anyone tried other cabs than the traditional reflex cab that's been around for a while... Open back, partially closed... etc ??
by Aurora
Tue Feb 15, 2022 8:44 pm
Forum: Speakers and Cabinets
Topic: Alternative cabinet materials
Replies: 15
Views: 5974

Re: Alternative cabinet materials

Interesting thought.... how about 1/8 ply panels with foam core glued in between, as a sandwich type panel..?? Should be quite a lot lighter than 3/4 ply or even gluelam...??
by Aurora
Tue Feb 15, 2022 4:01 pm
Forum: Dumble Discussion
Topic: Capacitor selection
Replies: 7
Views: 1109

Re: Capacitor selection

I¨ve been following these capacitor discussions off and on for several years now. While there are certainly differences between cap types, I wonder how much is really owed to the type rather than tolerance variations, - particulrly in vintage capacitors which are mostly 10% at best, - 20% being more...
by Aurora
Sun Jan 02, 2022 1:56 pm
Forum: Speakers and Cabinets
Topic: A Tube Amp Doctor Tolex Glue thread (Europe)
Replies: 4
Views: 2993

Re: A Tube Amp Doctor Tolex Glue thread (Europe)

I have feeling that those "Tolex purpose" glues are just rebranded water based contact glues..... Any quality brand contact glue will probably do the job just as well.....
by Aurora
Sun Jan 02, 2022 1:31 pm
Forum: Dumble Discussion
Topic: 120V versus 240V
Replies: 5
Views: 683

Re: 120V versus 240V

Actually - given the same output power, the mag fields form the PT should have doubled, as the primary current of the PT are doubled going from 240 to 120V..n in order to supply the same amount of power.... 230-240V fully balanced for household (and amplifier) appliances are quite rare.... Norway, A...