Anyone wanna go fishin'?
I received my little $15.00 package of Kryston "Heavy Metal Extra" tungsten putty today. It came in a neat little 4.5 cm round plastic container with cool graphics. I opened it up to find a postage stamp size square of putty that measures 2.7 x 3.0 x 0.4 cm and weighs in at a hefty 27 grams...just about 1 oz. This stuff is DENSE and HARD. It is too hard for our application and not sticky enough to stay in place, even if it could be worked into the baffle compartments. Hypothetically, IF it was possible to get it into the baffles, it would take at least 6 of these to flush mass load the baffles per side and add 324 grams to the stock weight of 330 grams (published). This would double the weight not counting anything else you might want to add such as acoustic foam, Dynamat, and so forth. At ~ $15.00 per container, that would set you back another $180.00. So, too dense, too heavy, too expensive and does not play nice with others. One of their other formulas may not be as dense/hard as the Heavy Metal Extra, but the price is the same; so, "No Deal!"
I used my Acculab VI-4kg electronic scale to weigh the Kryston putty, Claytoons plasticine, and my homemade tungsten putty. I calibrated the scales with the supplied 2kg ingot and then measured each putty and 3 sets of headphones. The putty weights are *approximate* compared to the Kryston. I made little squares of plasticine and tungsten putty as close as I could match to the Kryston square, measured with a ruler.
Kryston Heavy Metal Extra = 27 grams; ~ 1 oz.
Claytoons = 5 grams; 0.18 oz.
Tungsten Putty = 8.3 grams; 0.3 oz.
Stock T50RP without cable = 327 grams; 11.7 oz; 0.73 lb.
"Less Is More" mod without cable = 392 grams; 14 oz.; 0.875 lb.) --> Medium mass loaded tungsten putty "walls" ~ 1/2" wide surrounding the drivers and minimally into the baffle compartments out to 1/2" from the driver perimeter, cup bottoms Paxmate except central compartments and bass ports, Dynamat around drivers (ear side), self-adhesive black felt over Dynamat, 1/2 medium 100% cotton ball teased to 1/2" and sized for cup bottoms, 2 Kleenex rolled into 5" 'ropes' and placed under back side of ear pads, stock white driver felt and black bass port felt, dust cover over driver, stock pads and cable. Edit: Plasticine in outer cup rings.
"Transpore 1.5" mod without cable = 365 grams; 13 oz.; 0.81 lbs.) --> Flush mass loaded tungsten putty in the baffle compartments, cup bottoms/sides Paxmate except central compartments and bass ports, no Dynamat around drivers, 1/2 medium 100% cotton ball as above, Kleenex ropes as above, 1.5 layers of Transpore tape over naked drivers (3/4" tape: 2 strips side by side form 1 layer with ~ 1/8" overlap; 1/2 layer is 1 strip centered perpendicular overlaying first 2 strips), stock black bass port felt, entire dust cover intact, stock pads and cable. Edit: Paxmate in the outer cup rings.
Edited by bluemonkeyflyer - 11/4/11 at 7:05pm