schwallman
1000+ Head-Fier
- Joined
- Jan 5, 2010
- Posts
- 1,167
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- 24
I didnt believe grado used different drivers in different models. All the drivers look identical to me. But the hf2 drivers in the rs1 cups have a boomier bass than the rs1 drivers in the cups. They both seem to have the same amount of dampening material and They both(at one time) had the same hole knocked out of them. Food for thought.