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Old

Finaly did some DIYing again

Posted 10th January 2010 at 09:26 AM by wintermute (Wintermutes Rantings)

With the Silly season and general busier than normal work shedule (working a lot of weekend) I haven't made any progress on anything much at all lately.

Last week my Mother In Law put my 2 YO daughter in the bathroom basin. It was only attached with what looked like tile grout. It didn't hold... Today My Father in law assisted to glue it back in with some marine polyurethane adhesive/sealant . Hopefully it holds! This stuff was similar to the glue I had bought a while back to seal my 3 ways (see the leaks are stealing my bass blog entry) but hadn't got around to using yet. It seems perfect, it remains flexible, seals, sticks incredibly well apparently, and even claims to dampen sound and vibrations . As the tube was open, I pulled one of the Three ways out and basically sealed every interior joint. I then put a slight 45 degree chamfer on the back of the woofer cutout and glued in the front baffle (it has always only been screwed and didn't even have a gasket). ...
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Old

A Decision

Posted 8th January 2010 at 07:40 PM by tomtt
Updated 14th October 2011 at 10:45 AM by tomtt

Quote:

"The best way to control the opposition is to lead it ourselves."
- Vladimir Ilyich Lenin

"First they ignore you, then they laugh at you, then they fight you, then you win.
- Gandhi
in light of these quotes, from Famous Men,

I no longer care what my psychiatrist says.

I'm glad I'm a Jedi


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Horoscope

ImageShack Album - 36 images

Imageshack - dscn95063168587.jpg


ImageShack Album - 36 images

ImageShack Album - 36 images

Horoscope


http://www.zasshi-online.com/tohan/v...=4910119051113
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Old

The white van is in Tucson

Posted 8th January 2010 at 04:27 PM by relder (Rob's active 3way with transconductance chipamps build blog)

I haven't been propositioned for white van speakers for several years (outside of a home depot.) But a guy I know was taken in this last week after leaving the ATM.

Why always a white van, why not mix it up with a red one or something?

They are a lot more sophisticated it seems now.

It might be fun to borrow his newly acquired $300 sound system and measure them, but I think I'd rather use my time on real audio projects.
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Old
Rating: 7 votes, 4.43 average.

Tech note: voltage regulators-1

Posted 7th January 2010 at 05:10 PM by jan.didden
Updated 11th February 2010 at 03:31 AM by Jason

There are lots of types of voltage regulators, but in this installment I’ll talk about series regulators.

What’s a regulator? It’s all in the name: it REGULATES the voltage to the circuit to be powered to keep it constant and as free of noise and ripple as practical. The ‘regulation’ means that there is some circuitry that compares a reference voltage, like from a zener diode, to the regulated output voltage, and then uses the difference between the two to adjust another element to null that difference. The ‘compare-and-correct’ is crucial for a regulator, and is done by negative feedback….

Look at Fig 1: is there a regulator in there? No, they are all circuits that try to give a constant, ripple free voltage, but if you start to draw varying currents from them, the output will vary with that current and there is no mechanism that somehow tries to null out that variation. Fig 1c is better than 1b, because Q1 buffers the voltage from the zener reference, so...
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Old

Old Style DCB1 information

Posted 1st January 2010 at 01:53 PM by Tea-Bag
Updated 13th October 2010 at 12:48 AM by Tea-Bag (updated some more timely info)

The basics on the boards....
The hypnotize is a 1 input/1 output Shunt regulated Direct Coupled Pass like B1 buffer. It has a relay delayed startup to avoid DC problems for the amps. This board (and even Mez) can be used just as a shunt power supply, and their is a thread for this also.

The Mesmerize can use up to 6 muting relay inputs, and is a larger board. All others matters being equal.


Here are some relevant threads.
http://www.diyaudio.com/forums/group...hunt-psus.html

http://www.diyaudio.com/forums/pass-...ml#post1854512

http://www.diyaudio.com/forums/power...t-reg-pcb.html

Attached is a semi-built DCB1 mesmerize. Also the main schematics of the device, in case you need to troubleshoot. The below shot is a bare Hynotize PCB.
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Attached Files
File Type: pdf DCB1 BOM V4.2.pdf (44.6 KB, 3716 views)
File Type: pdf SalasDCB1shuntreg build guide v4.1.pdf (50.7 KB, 1867 views)
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Old

Top plate finished...

Posted 1st January 2010 at 12:58 PM by Bas Horneman (Bas Horneman's diyAudio.com blog)

finally..

Just a little sanding. And hopefully I will be able to put a layer of primer down.
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Old

What I'm listening to

Posted 31st December 2009 at 11:37 PM by alazira

http://www.amazon.com/gp/richpub/lis...m_aya_bb_lists
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Old

looks like -

Posted 18th December 2009 at 09:04 PM by tomtt
Updated 8th January 2010 at 07:21 PM by tomtt

too many changes, too soon.


only 2 ways out.

face the music (!PoP Music!)

or this -




YouTube - suicide is painless - 4077th tribute

(what to do ....?)

?

?
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or this -

Welcome to the Frontpage

Popfreeradio.com - Wikipedia, the free encyclopedia


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Click the image to open in full size.


Click the image to open in full size.


Click the image to open in full size.

http://img190.imageshack.us/img190/1709/1013903p.jpg


Click the image to open in full size.

Click the image to open in full size....
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Old

Help

Posted 18th December 2009 at 02:03 PM by ed444ed

Hi

i am a first year architecture student and my current project is one where we are asked to reinterpret a space using a device that we must invent! our site is a long railway bridge with many tunnels. the device is supposed to help navigation around a space. i am passionate about music and sound and play many instruments and produce music myself.
the device i intend to create is based on the principle that sound travels more effectively through different materials. (gasses liquids and solids)
i want to create a device that attaches to a surface in the space and emits a sound. perhaps a pickup that is attached to a glass and connected to an amplifier. so that the sounds around the area are amplified in a way that is unusual. i have never experimented with audio electronics so i am sure that this is alot more complicated than i am aware of! PLEASE GIVE ME TIPS!!!!
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Old

Looking for a good place to Blog ...

Posted 9th December 2009 at 05:31 PM by PB2 (Pete Basel's Test Blog)
Updated 9th December 2009 at 05:34 PM by PB2

Just trying this out. I tried out Wordpress and found that it was rather limited in formatting in that many of the offered templates were not what I wanted. Perhaps this is better, or full custom would be better. I'm not really looking to do a chronological blog as much as a static place organized by pages or categories to post my thoughts and selected projects. Many of the Wordpress templates did not even get the hierarchical pages right, and you have to pay to edit the CSS.

Wordpress test blog: http://petebasel.wordpress.com/


Pete B.
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