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Paul Spencer

DIY audio: what are you building?

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5 minutes ago, bob_m_54 said:

Is this solder pad on the same trace? Might be easier than soldering onto chip leads.

Nah, it had no trace from it, like it's floating. Works as I did with no shorts to either neighboring legs.

 

A pic off lampizator site for reference, pin 18.

 

801192229_Pin18mute.thumb.jpg.c8b8eefe86259572b8c7f3a7cf820610.jpg

Edited by Muon N'

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I get what you mean Bob, and that is essentially how I did it, I just didn't define the difference between pad and leg.

 

Edit: ah, that pad over there, nah, different leg.

Edited by Muon N'

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Yep, that's easier to see in your last pic. I hate soldering onto them too.

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I remember modifying my old Amiga 500, about a week after I bought it, by piggybacking a new ROM chip directly to the pins of the original ROM chip, with only the chip select pins connected to a switch for selecting between the two. Obviously it wasn't hot switchable LOL

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Diy steel couplers feets (aka Finite Element Cerapod)

PicsArt_10-19-12.07.10.jpg

PicsArt_10-19-12.08.11.jpg

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10 minutes ago, mwhouston said:

Who is up for their own version of these. 

7F97486A-F7C0-455D-81DE-EBC1D3D37683.jpeg

 

Cute.  Does the design treat them as a transmission line, or is it a sealed volume?  I have a pair of tiny drivers that might suit.

 

or maybe these from Jaycar  https://www.jaycar.com.au/shielded-2-inch-10w-8-ohm-full-range-speaker/p/AS3032 on special for the next few days

 

Shielded 2 Inch 10W 8-Ohm Full Range Speaker

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23 minutes ago, mwhouston said:

Who is up for their own version of these. 

7F97486A-F7C0-455D-81DE-EBC1D3D37683.jpeg

Please tell me they’re called the "chestbursters"

 

A9AFF054-D41D-4E66-9B69-0EC0F1136C31.jpeg.49172ba695f8eba104b93d7c3bbefc42.jpeg

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Just finished the Pass ACA. A diminutive 8ish watt class A power amp.

Powered by a 24v Meanwell brick smps.

Using the B1Korg to drive it from the SB Touch.

 

Surprising how easily it drives my Castles, but they are 92dB 1W1m.

IMG_0094.thumb.JPG.4a2e49dad578addcbe1630f7a5ae8f4c.JPG

 

And to show how small it is, a pic of it sat on my M2X.

 

IMG_0095.thumb.JPG.2c599e32cd3e3cd3c78914c0fab42ead.JPG

 

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32 minutes ago, Batty said:

Just finished the Pass ACA. A diminutive 8ish watt class A power amp.

I have one of those is my system (loaned out my first watt). A wonderful little amplifier.

 

dave

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Great little amp, especially for a 5 hour build.

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Way off thread but does anyone know the bit rate of free Spotify? 

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50 minutes ago, mwhouston said:

Way off thread but does anyone know the bit rate of free Spotify? 

If I remember correctly, it’s 160 on desktop but I think it’s lower on mobile

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Finally started working on my first subs build, using Dayton RSS390HO drivers

The core plan was to keep them small, 410x410x410x18mm, with drivers and bracing that comes down to roughly 44l net.

The baffle is double 18mm, and I did manage to piece together the 3D bracing today.

Bought a router last weekend, as the blade of the jigsaw was warping too much and wasn't creating a perfect circle.

My plan is to finish the outside by using the same bamboo floor boards that are in the cinema room, but I will need the help of a table saw to get that right.

Hopefully my neighbour can be persuaded with some beers.IMG_20191022_123919825.jpegIMG_20191022_123909953.jpegIMG_20191022_194735547.jpegIMG_20191022_194720428.jpeg

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2 hours ago, Primare Knob said:

Finally started working on my first subs build, using Dayton RSS390HO drivers

The core plan was to keep them small, 410x410x410x18mm, with drivers and bracing that comes down to roughly 44l net.

The baffle is double 18mm, and I did manage to piece together the 3D bracing today.

Bought a router last weekend, as the blade of the jigsaw was warping too much and wasn't creating a perfect circle.

My plan is to finish the outside by using the same bamboo floor boards that are in the cinema room, but I will need the help of a table saw to get that right.

Hopefully my neighbour can be persuaded with some beers.IMG_20191022_123919825.jpegIMG_20191022_123909953.jpegIMG_20191022_194735547.jpegIMG_20191022_194720428.jpeg

Looks awesome. I was pricing up some routers myself today. Did you get one of those trim types or a big boy one?

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