Post by sailor on Feb 6, 2021 17:11:02 GMT -5
The only headphones I had up until very recently was a pair of Koss Pro 4's which live on my work bench for testing purposes.
I recently did a review of the Aurorus Borealis head pots of John Gasky's Everything Audio Network using the LTA microZOTL preamplifier's headphone out put jack. I was quite surprised on how great these sounded. So I plugged in the Koss and almost lost my lunch it was so bad.
So I decided to play a little and do an DIY upgrade to the Koss, what was there to loose but some time and a few bucks
.
I am doing this first try just as proof of concept before spending too much on the drivers.
I found a 50mm full range driver on Amazon for about $5 each and I added mini xlr connectors for just grins.
The drivers in the foreground are the originals just behind them are the new ones mounted in 1/4 inch ply baffle boards
the 1/8 deep 1/4 inch wide rabbit around the edge so it would fit into the original cup was an interesting exercise in not getting my fingers ripped off at the router table
I got new cushions from Koss ($5 including shipping). These are for Koss P4 aaa's but I could muscle them on
How do they sound? Well much better than the originals. Highs and upper mid range is MIA even though Amazon description said freq response was 20hz to 20khz. But I did answer the question of how to waste a few bucks and hours.
I recently did a review of the Aurorus Borealis head pots of John Gasky's Everything Audio Network using the LTA microZOTL preamplifier's headphone out put jack. I was quite surprised on how great these sounded. So I plugged in the Koss and almost lost my lunch it was so bad.
So I decided to play a little and do an DIY upgrade to the Koss, what was there to loose but some time and a few bucks
.
I am doing this first try just as proof of concept before spending too much on the drivers.
I found a 50mm full range driver on Amazon for about $5 each and I added mini xlr connectors for just grins.
The drivers in the foreground are the originals just behind them are the new ones mounted in 1/4 inch ply baffle boards
the 1/8 deep 1/4 inch wide rabbit around the edge so it would fit into the original cup was an interesting exercise in not getting my fingers ripped off at the router table
I got new cushions from Koss ($5 including shipping). These are for Koss P4 aaa's but I could muscle them on
How do they sound? Well much better than the originals. Highs and upper mid range is MIA even though Amazon description said freq response was 20hz to 20khz. But I did answer the question of how to waste a few bucks and hours.
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