Crowdfund IEF’s Projects

Top Donors

Anonymous

$1,001.00 June 10, 2020

Mark Ryan Sallee

$1,000.00 June 12, 2020

Andrew Lissimore

$1,000.00 June 20, 2020

Congratulations from all of us at Headphones.com.

Piotr Michalak

$1,000.00 June 24, 2020

Riveton earphones & Golvein cables

Prisma Audio

$1,000.00 June 24, 2020

prisma balls

Hawaii Bad Boy

$255.00 June 23, 2020

You just hit 5K 😉

Contribute to IEF’s new industry-standard headphone database!

$7,265 of $5,000 raised

Yes, I am finally going (almost) all-out on my headphone measuring endeavours.

As some of you may know, I currently host the world’s largest database of IEM frequency response graphs, currently at slightly over 700 individual entries (with over 2,000 data points including separate samples and model variants).

In short, I would like to do the same for headphones. I have already performed a small test-run with a Frankenstein’d rig comprising of an IEC60318-4 coupler and the MiniDSP EARS pinna, the results of which already come very close to common industry-standard rigs out there. But headphones are far more complicated to measure compared to in-canal earphones, so specialised equipment beyond what I have now is required for whatever data I gather to be fully compatible with academic target curves (Diffuse Field, Free Field, Harman etc.). As such, I had looked into upgrading my current rig with industry standard components from GRAS so that the acoustic impedance of my rig gets more in line with other measurement sources such as oratory1990.

Right now at a budget of $5,000, I plan to purchase the following components to upgrade my foldable rig:

  • GRAS RA0314 “Cheek plate”
  • GRAS GR1874 “Ear simulator holder”
  • GRAS SK6012 “Finger screws”
  • GRAS KB5000 “Large right anthropomentric pinna, 35 shore OO”
  • GRAS KB5001 “Large left anthropomentric pinna, 35 shore OO”

However if funding goes beyond the stated goal, I may simply purchase the full GRAS 43AG-7 setup and go from there.

I’m not going to lie to you and say that if I don’t hit my funding goal that this project isn’t going to happen. I’ve already set aside the funds required for this endeavour, so the purchase is going to happen either way. But I know a lot of people are interested in contributing to this potentially game-changing project, so I’ve decided to go ahead with a bit of crowdfunding with additional incentives to sweeten the deal.

Donation Incentives

$20: Permanent “Pioneer” role on the official IEF Discord server
$50: 
Your name in the credits of the headphone graph database page
$100:
Lifetime access to both the IEM and headphone graph comparison tool
$1,000+: You/your organisation shall receive a reserved watermarked spot on the headphone graph comparison tool (which will also be printed on every graph generated by the tool)

I’m not expecting much, but again I’m making the equipment purchase regardless of how well this campaign goes. Thank you for reading.

$
Personal Info

Donation Total: $1.00

Recent Donors

Anonymous

$20.00 July 1, 2020

Anonymous

$100.00 June 25, 2020

Anonymous

$5.00 June 25, 2020