In this particular case, no guessing at all is required. It is what it is, I have no desire to change anything, I like it just as it is. The refresh (change of all electrolytics inside) is a forced move, after 35 years, it's nominally 12,000uF cap was registering as 7,000 uF even.
So does mine, but my home scale says 16 kg net. It's not a terribly precise instrument, to be sure, but they do say it will err by less than 0.5 kg in the 10-130 kg range. So 16 kg is not a rough guess, it's simply what the digital readout says.
This unit was made on 24 March 1978, according to the factory stamp inside, which means in the early days, as that series was introduced in very early 1978 (January, I think?). I have seen other units from other manufacturers shed weight mysteriously before, so I have to allow for the same possibility here.
I have also seen other service manuals for the same unit, but of a later date, and have noticed changes. For example, that vile dual concentric capacitor was abandoned later on for two discrete 15,000/56V caps, exactly the same as those they used in model 1152 DC integrated amp (which I also have). I assume they had a big stock of those single ones, and did the right thing only after they had used them all up. Commercial company reasoning.
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Know, he walked away, but did go into shock later that evening and spent 2 days on his back with pins and needles everywhere.
Alas still in the Q, behind the TT which I found in need of major repair. Speaking of quality control, I should post a pic of my bag of 10 minuature spirit levels all sitting on the same flat surface.
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Ah, life gets in the way.. fun, no?
I was in the basement making a clock repair fixture when the gas burner had an explosion, blowing off the intake piping to the fan/gas assembly. Now I'm in the process of disassembly (the burner, not me..and I threw the underwear away😱), as I suspect the cone has a big hole in it allowing the flame to propagate back to the fan assembly.
Ya know, it just never ends...
jn
That is just driving me nuts. First, conversion to metric...then, discussion and analysis of time dependent thermal response. Then, the "what if" portion of the model's capablility... I fear my behavior here is not unlike the physicists I work with. They constantly improve the product, so can never finish.
Seriously, I've been quite busy searching what is already out there on the web, as I do not wish to duplicate material which others have provided. And I'm seriously thinking about making a darn junction measurement setup as part of the article. But I may have to hold off on that, given the explosions in my life..😱
jn
It is a remarkable thing, when you experience it for the first time - a tiny, throwaway speaker generates a vast soundstage, with all the intensity of the bass action subjectively fully intact. As an example, Scott recently mentioned a Jimi Hendrix piece, which I pulled from a YouTube video. The bass guitar line in that is easily followed, and exists as a separate sound element with its identity fully intact - it never does not sound like a bass guitar, I don't feel it's "missing".
The better the small speaker carries off all the normal frequencies it's meant to deal with, the more intense and visceral the bass impact is, subjectively - I have never, ever thought to myself, gee, I would like a subwoofer ...
On the transformer front, the DIY gainclone I did years ago uses 600VA worth of transformer - done as monoblocks with 300VA per. That was a sweet spot for buying them, didn't make sense to go smaller - and I know much more now about what to worry about. Those amplifier units only had thermal overload issues, not power supply ones - the instantaneous heat buildup on an extended, relatively pure note couldn't be dissipated fast enough ...
Scott,
That is one reason to have one precision Starrett machinist level. The accuracy is guaranteed to meet a precision standard.
That is one reason to have one precision Starrett machinist level. The accuracy is guaranteed to meet a precision standard.
Hi,
Is there any meaning to this or is it just bragging into space?
If it impresses you then my mono blocks sport 1500VA power transformers.
These are not just that, BTW. They're also split transformers, shielded and auto regulated and weigh well over 40 lbs each. Impressed?
What's the point of all your meaningless postings anyway?
Ciao, 😉
P.S. The signature you're using was addressed to me. SY's brilliantly twisted humour IIRC.
Which is also why I asked about your first name BTW.
Is there any meaning to this or is it just bragging into space?
If it impresses you then my mono blocks sport 1500VA power transformers.
These are not just that, BTW. They're also split transformers, shielded and auto regulated and weigh well over 40 lbs each. Impressed?
What's the point of all your meaningless postings anyway?
Ciao, 😉
P.S. The signature you're using was addressed to me. SY's brilliantly twisted humour IIRC.
Which is also why I asked about your first name BTW.
I have one from my father's (RIP) kit (funny I almost metioned Starrett with respect to quality you can trust). It's just that the poor cantilever will get bent again with one sitting on top. The idea all along was to pick at least one (they are 4.5mm and .2g) against my Starrett.
Scott,
Time for a laser level then! I don't remember what the smallest Starrett level is but yes as massive as they are they would be heavy. Most of the laser levels for consumers are pure junk though, perhaps you can make your own diy laser level?
Time for a laser level then! I don't remember what the smallest Starrett level is but yes as massive as they are they would be heavy. Most of the laser levels for consumers are pure junk though, perhaps you can make your own diy laser level?
AJT,
I can eat a large popcorn at the movies all by myself, does that make me a great movie critic! 😉
When we all start using a 65 cent 3" PC speaker as a reference for audio quality we can all give it up I must think.
I can eat a large popcorn at the movies all by myself, does that make me a great movie critic! 😉
When we all start using a 65 cent 3" PC speaker as a reference for audio quality we can all give it up I must think.
Hi,
The most impressive part is the electricity bill at the end of the month, Jacco.
Mind you these are 110W OTL amps which are by nature the most inefficient beasts one could come up with. Even in class AB1.
Sound is extraordinary transparent but......
Ciao, 😉
The most impressive part is the electricity bill at the end of the month, Jacco.
Mind you these are 110W OTL amps which are by nature the most inefficient beasts one could come up with. Even in class AB1.
Sound is extraordinary transparent but......
Ciao, 😉
Scott,
On a more serious note here for alignment of a stylus didn't they have some fairly accurate protractor type of measuring instruments for that? I need to do the same with an Ortofon cartridge that only has one degree of adjustment in the vertical plane, not sure how to do it correctly? I don't know what you call that type of mount but it is screwed to the end of the tonearm and can only pivot around the axis. An old Technics turntable that is just sitting. Otherwise it is time to get back to the old Dual sitting on the shelf. Totally different type of cartridge mount on that one with a head shell. I guess I will have to go over to the dark side on the Phone threads and get reamed for not knowing this stuff!
On a more serious note here for alignment of a stylus didn't they have some fairly accurate protractor type of measuring instruments for that? I need to do the same with an Ortofon cartridge that only has one degree of adjustment in the vertical plane, not sure how to do it correctly? I don't know what you call that type of mount but it is screwed to the end of the tonearm and can only pivot around the axis. An old Technics turntable that is just sitting. Otherwise it is time to get back to the old Dual sitting on the shelf. Totally different type of cartridge mount on that one with a head shell. I guess I will have to go over to the dark side on the Phone threads and get reamed for not knowing this stuff!
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