The Other 13E1 SE-OTL

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ed
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Re: The Other 13E1 SE-OTL

Post by ed » Sun Feb 10, 2019 8:01 pm

Oh poo!, that pic has just reminded me that I think I need to get calibrated......
dmm compare.jpg
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Nick
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Re: The Other 13E1 SE-OTL

Post by Nick » Sun Feb 10, 2019 9:11 pm

Man with two watches never knows what the time is...
Resistance isn't futile it's V / I.

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Dave the bass
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Re: The Other 13E1 SE-OTL

Post by Dave the bass » Sun Feb 10, 2019 11:15 pm

Or...

Man with noisy supply line shouldn't trust either meter. Man needs to check specs of DVM then pursue DVM supplier possibly WRT to published RFI rejection stats.

Or...

Man live near a bleedin' big gurt mahoosive RF environment and needs to get out o' there quick before becoming very warm and eventually cooked from the inside!

Or ....

Man live near CB radio enthusiast?Radio Ham and needs a polite word.

Or...

Man just ignore and play groovy wooden music maker :)
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ed
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Re: The Other 13E1 SE-OTL

Post by ed » Mon Feb 11, 2019 9:10 am

Dave the bass wrote:
Sun Feb 10, 2019 11:15 pm


Or...

Man just ignore and play groovy wooden music maker :)
yeah, this is the one....but I have a problem see, I've got two and they don't sound anything alike.....so which one is it?
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Re: The Other 13E1 SE-OTL

Post by IslandPink » Mon Feb 11, 2019 10:51 am

What you need is a chemistry set and two different metals.
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Nick
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Re: The Other 13E1 SE-OTL

Post by Nick » Mon Feb 11, 2019 12:14 pm

IslandPink wrote:
Mon Feb 11, 2019 10:51 am
What you need is a chemistry set and two different metals.
And then you need a way of connecting those two different metals to your meter probes without any other metal to metal connections...
Resistance isn't futile it's V / I.

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Re: The Other 13E1 SE-OTL

Post by Nick » Mon Feb 11, 2019 12:16 pm

Or you could use a 0.05% voltage reference

https://uk.rs-online.com/web/p/voltage- ... s/4619428/
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Re: The Other 13E1 SE-OTL

Post by ed » Mon Feb 11, 2019 12:50 pm

I'm getting confused, not to mention guilty about going OT....

but I thought Dave was talking about guitars, which I understand, and then Nick was talking about Vrefs, which would be ok if I knew how to calibrate the dmms and then there is Mark. I haven't got the foggiest notion of what Mark was talking about.

I'm now going to play a guitar, those that want to can talk about 13E1 SE-OTL...and while I play Im going to dream about being able to calibrate a dmm.

edit: just occurred to me...even if I knew how to calibrate a dmm the ref would only be good for DC readings.....what about all the ac and R readings?
now it's eating into my modal practise.....
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Re: The Other 13E1 SE-OTL

Post by ed » Mon Feb 11, 2019 1:06 pm

further....

I couldn't order the Vref from Rs at the moment if iI wanted to because they think I'm a n'erdowell....I ordered some parts on 8th Jan and got the invoice on 11th jan, which I paid promptly.......so far so good.....on 30th Jan I got statement from RS saying account overdue...

so I spoke to RS accounts who said they had no idea what the problem was but that the cheque was ok and they had a photocopy of it...it was signed and dated correctly.....

I waited for Jan bank statement to come, which it did last Monday...it showed the cheque in question drawn by Rs on 15th Jan and then bounced on 16th Jan..There are much wonga in the account concerned ....mmmm

I went to the bank on Tuesday last week for an explanation. The girl contacted the business centre...they had no idea, there were no notes on the file...the girl then tried the clearing dept(supposed to be the holy grail of banking)....I was given a reference and told I would be contacted within 3 days....still waiting, meanwhile I can't imagine what RS think of me.....

watch this space...or not...depending on your interest.
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Re: The Other 13E1 SE-OTL

Post by pre65 » Mon Feb 11, 2019 1:22 pm

Cheques ?

How pass'e (the accent should be over the e)

How's the amp build going Steve, to get this thread back on topic. :)
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Re: The Other 13E1 SE-OTL

Post by Cressy Snr » Mon Feb 11, 2019 1:28 pm

pre65 wrote:
Mon Feb 11, 2019 1:22 pm

How's the amp build going Steve, to get this thread back on topic. :)
Not me Phil. This is Ray's thread. :)
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Re: The Other 13E1 SE-OTL

Post by pre65 » Mon Feb 11, 2019 1:32 pm

Cressy Snr wrote:
Mon Feb 11, 2019 1:28 pm
pre65 wrote:
Mon Feb 11, 2019 1:22 pm

How's the amp build going Steve, to get this thread back on topic. :)
Not me Phil. This is Ray's thread. :)
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Re: The Other 13E1 SE-OTL

Post by Ray P » Tue Feb 12, 2019 7:18 pm

The plug taps arrived yesterday so all the threads in the heatsinks have now been cut and the mounting studs inserted. I'll be able to make some solid progress now.

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Re: The Other 13E1 SE-OTL

Post by Ray P » Sat Feb 16, 2019 5:56 pm

Today I;
  • started making up the umbilical cable to connect the tranformer chassis to the amp chassis; stopped when I realised I had bought heatshrink thats too small!
  • started wiring up the septal sockets
  • sorted out a switch arrangement for the selection of feedback (for 8 or 15 ohm speakers)

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Re: The Other 13E1 SE-OTL

Post by Ray P » Wed Feb 20, 2019 7:12 pm

Heatshrink arrived today; food then hopefully some progress.

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