Pl400 noise come up

[changdangnz]

I try push hard PL400 this afternoon for about 45 minutes with a 2 cooler fan on the back 8 fin flow to cool down . Suddenly it is make a noise and i can see a meter needle is on middle . I just disconnect speaker cable out and then turn off power amp. Let amp cool down and then i turn it on. It's give a sound normal. Did anyone in here have a smae issue ? I drive amp with a BIC VENTURI dv5312 250rms .

 

[Northwinds]

Sometimes in heavy bass sections when driven really hard, the 400s will make a occasional squeak. I think the heat protection is triggered or maybe the DCP? Lee, Joe or Jer would know better the phenomena

I would not mess with the speaker cable out while the amp is on, that's asking for trouble

 

[Fishoz]

"I would not mess with the speaker cable out while the amp is on, that's asking for trouble"

Major POOF!!

 

[laatsch55]

What is a Bic Venturi?? Are you saying all you are driving the 400 with is 250mv???

 

[NavLinear]

What is a Bic Venturi?? Are you saying all you are driving the 400 with is 250mv???

I remember the BIC brand from the 70's:

http://www.audioreview.com/cat/spea...dv5312-powered-towers/prd_125658_2741crx.aspx

 

[changdangnz]

Exactly this monsters. Man i try to push harder and noise come up . I am try a different pl400 series 2 with meter not working on left channel. It's a huge power for to to push hard monster bic dv5312 . My neighbors is came over and said too noise . Hahahahah