@Cylestyne
I agree with you. The horn is loud and sounds good but I installed it in my City (behind the number plate) and during the rainy season last year the horn swallowed a lil water and got screwed up. Then I bought another pair and installed it in the engine bay area since the horns don't fit next to the bonnet latch in the honda City. Anyways, the sound of the horn was muffled since in was in the engine bay and after I sent the car for a service the horn got screwed up again.
So you're right. The Bosch horn isn't at all durable and our 50 rupee horns last 10 years but a Spanish horn for 1500 bucks doesn't even last a few months...