Skip to main content

Status Update

No posts in a few days, just applying more and more Damplifier. I've bought another 40 square feet which should be enough to properly finish the rear half of the car and do the front doors. In addition, upon numerous recommendations I found online, I purchased 2 gallons of Spectrum, Second Skin's liquid deadener. Apparently the secret technique to getting the best results is:
  • Average 2 layers of Damplifier Pro on the the whole car.
  • Paint on a layer of liquid deadener (either Spectrum, or Spectrum Firewall).
  • Add a layer of Overkill (a closed cell, neoprene foam).
In that order. So, in addition, I got 60 square feet of the Overkill to finish of the rear half of the car. The liquid deadener is almost a must over top of the Damplifier matting. The sticky butyl stuff on the back has a tendency to squish out between the seams and make a real sticky mess of anything that comes in contact with it. The liquid Spectrum should provide a nice, clean surface for everything to be laid down on later, including the Overkill. In some places, I may not even need to glue the Overkill down. Since Overkill is designed to block higher frequencies, it really just needs to be present, not necessarily in complete contact with surfaces.

I have pictures of the progress over the past few days and those will be posted in the album later.

I've also started work on the subwoofer box. It's being constructed of 3/4" MDF. All the MDF is being coated with epoxy to waterproof it and improve rigidity. I'll be using fiber glass on the seams to help rigidity as well. The goal is to make the box as close to optimal as possible and also make it possible to remove (in a few pieces) should some sort of maintenance be necessary. So it will be a semi-permanent installation. I'm going to make the vented, top section of the box more easily removable. Mostly because I'd like to be able to easily direct the ports toward the front or back of the car in order to allow some experimentation.

The plan is to have the box ready for epoxy coating by Saturday evening. Photos will follow :)
Labels:

Popular posts from this blog

Python on Android

Note: This post is out of date. If you'd like to run Python on your Android device, please see my Android Scripting Environment project. Here's an early Christmas present for all those Python fanatics (self included) out there! With a lot of help from my friends (thanks Manuel and Thomas !) I managed to install Python 2.4.5 on my G1. It's still rough around the edges, but I think it's a good start. Klaus Reimer has a nice overview of how to cross-compile Python . My instructions borrow a lot from his. Download and build the Android source . These directions assume that you have installed the source to /android_src . Download and build the Python 2.4.5 source . These directions assume that you have installed the source to /python_src . Make copies of python and pgen for use later in the build process then clean up. $ cd /python_src $ cp python hostpython $ cp Parser/pgen Parser/hostpgen $ make distclean Apply the following patch to the Python source. diff -r -c -b P...
Read more

Email Injection

Not so long ago, I ran a wiki called SecurePHP. On that wiki, there was one particular article about email injection that received a lot of attention. Naturally, with all the attention came lots of spam. As a result, I disabled editing of the wiki and content stagnated. Still, the email injection article remained popular. About a year later, the server that hosted SecurePHP died and I never had a chance to hook it all back up. I saved the article though and I'm reposting it now. It may be a bit old (I've been away from PHP for a long time), and I didn't write all of it, so feel free to leave comments about needed updates and corrections. Though this article focuses on PHP, it provides a lot of general information regarding email injection attacks. The PHP mail() Function There are a lot of ways to send anonymous emails, some use it to mass mail, some use it to spoof identity, and some (a few) use it to send email anonymously. Usually a web mailform using the mail() funct...
Read more

Unblock Us Security

Unblock Us is an interesting solution to viewing region locked content online. Instead of offering VPN services, they offer a DNS-based solution. By using their DNS servers, geolocation requests by services such as Hulu and Pandora are directed through a geographically appropriate proxy. The remainder of your traffic (e.g. the video or audio stream) is accessed directly. That means you can make use of your connection's full bandwidth. Conversely, VPN connections often decrease your connection speed significantly. However, the DNS solution has security implications. As a DNS provider, Unblock Us is the in perfect position to perform a man in the middle attack . After all, that's what they're doing to sites like Hulu. (Note that SSL connections are safe from man in the middle attacks.) If you trust Unblock Us, then this isn't a problem. If you don't, it's best to limit the traffic that uses their DNS servers. The remainder of your traffic should use a trusted ...
Read more