davedotco said:gasolin said:davedotco said:radiorog said:K3 is definitely 2x150
Certainly in terms of manufacturers specifications. The OP has been given some duff information which he then uses in a completely unwarranted attack on WHF.
Reading between the lines, I think the OP bought the amp under the impression that it was twice the power of the K3, which it is not. Since it did not 'blow him away' with all the extra power and volume that he expected, he is looking for someone to blame.
The only area that might be a genuine issue is the onset of the protection circuitry. This might be due to the OP trying to get the amp to deliver substantially more than the K3 (it can't) or the protection circuit might be poorly setup. Impossible to know without testing.
Extra power? 150 watt is only 3 db more than 75 watt and as i remember it' has to be an increase of 10 db where people start to think it's twice as loud https://recording.org/threads/twice-as-loud-6db-or-10db.24495/
But that is a separate issue.
The OP thought he was buying an amp that was twice the power and expected a substantial increase in power and volume because of that.
He didn't get it as the amps are more or less the same power so was upset and perhaps thinking he had been 'conned'.
Few people, even on this forum, really have a grasp on the relationship between amplifier power, measured SPL and subjective loudness, it is pretty clear that the OP was expecting a lot 'more' and didn't get it.
The Blak is supposedly a lot more refined than the K3 which is not I think, what the OP was after.
Alot more, 3 db is only very little difference in the end (max spl) my car has a top speed of 220kmh would i notice if it where 235kmh mabye not unless it has faster acceleration
would i notice if i get 3 db more power, maby not but if it can handle my speakers better i might notice a difference