After spending quite a chunk of change on materials and hardware this past week, I’m having to ask for viewer help and support in the way of contributions.
I have updated the site with a contributions link.
You can find it on the right side of the page. Just click on the “contributions” button and it’ll take you to paypal where you can contribute to the site’s funds.
Keep in mind, I am 3rd party. I have none and never will have advertising. Everything I do comes out of my pocket with help from those who contribute. I do not charge for testing. If I did, that would be against everything I am for. My only criterion for testing is that it be applicable to the rest of the community. As long as others benefit from the test, that’s all I need. 😉
If anyone would like to kick over a few bucks my way, it would really be appreciated. I’m working on plans for a new test baffle which is going to cost me a few hundred dollars, as it stands; maybe more. Current plans have it being comprised of steel supports and MDF/plywood and made to be collapsable. I’m still drafting some things I want to do and have learned will be useful from previous iterations. One is the importance of baffle size and storage relationship. There’s a tradeoff here with a static baffle. But, if I can make it a collapsable and mobile baffle, I can have the best of both worlds. My goal is to achieve an IEC baffle again (or very close to it), but when folded down, the size will be be around 5x4x4 ft which is the space allowable in my garage for storage.
The new baffle will also incorporate a foldable microphone stand and a pin/track system allowing the microphone to fold out, and move on a track to various distances from the driver being tested. This gives complete repeatability in FR and HD/IMD testing. Additionally, it makes setup and testing much quicker. No more dragging out the mic stand and measuring distances between tests since I will have the track marked at certain distances. The baffle can also be rolled outside – away from any reflecting surfaces – in order to achieve as close to an anechoic response as possible, allowing for further resolution in measurement. Once measurements are completed, the baffle can be rolled back in and stored out of the way.
I’ll be posting some graphs created from Edge software simulating baffle step/diffraction so everyone is clear on where the baffle influence takes precedent.
I’ll also post pictures of the new baffle build as I go but I probably won’t start for at least another week or two… it’s HOT outside. I think everyone is feeling the wrath lately.
Any funds I receive go toward things such as paying for test equipment I’ve already purchased (such as the Klippel, test microphone, and corresponding modules), materials (such as baffle build materials, cabling, etc), drivers for testing, and shipping costs to return donated drivers to owners when they can’t afford it. I’ll also be saving up to fund the purchase of a laser at some point. All of these add up and every little bit of contribution helps. Contributions as little as a few dollars can add up quickly. So, please, if you can contribute, please do. I hate to plead but I also like to eat. 😉