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Paulie Paul wrote:
Can I have a go??
As previously stated, there is no mention of what the term 'blown' describes.... I'm guessing the dead drivers have burnt coils because if there was a mechanical problem (ripped cones/glue issues etc) it would have been clearly stated. It is also worrying that the thread was started without any investigations happening first ("our engineer is away" - and?) and that the question of build quality was raised.
A bit of background info to consider (which prompted the above);
As many may know, I supplied these drivers new in December 2011, I took in p/ex a number of May 2010 dated PD.1850's, ten to be exact. Out of that ten, only two worked, the rest were blown. In addition to this, out of that eight blown drivers four were RMJ recones which indicates that they have been blown previously, one of the working drivers was also an RMJ recone. I left two other PD.1850's in Edinburgh that night which Electrikal wanted to keep, again, these were RMJ recones. So, out of the initial twelve PD.1850's owned, I count at least fifteen blown driver incidents between May 2010 and December 2011. The coils in the blown drivers were just that, blown!! They were burnt and had melted/exploded.
Not related to the thread info;
This year so far I have reconed thirty two PD.1850's, I have also reconed seven PD.1851's - hardly dropping like flies are they? Also, the seven PD.1851's belong to Kayak, blown on their second outing at Notting Hill in 2011; contrary to reports, no drivers were blown during the driver's carnival debut in 2010. So, to recap, I haven't reconed any other PD.1851's other than Kayak's. These drivers died because of, well various issues, but one of them, in my opinion, was the fact that there were both PD.1850's and PD.1851's mixed on the same amp channels, the PD.1850's died first and this started a chain reaction of events that claimed a total of fifteen drivers. Amps used on sub were PL380's, 2 off.
On a happier note, Kayak again played at Notting Hill this year, they fielded twelve PD.1851's and four PD.1852's, all drivers survived, no casulties and the float, by all accounts, sounded superb (I can't comment because I was driving the truck and all i could here was the lockers in my cab vibrating!), amps used this year on sub were PL380's, 3 off (yes, same amount of drivers and one extra amp!)
Regarding the whole PD.1851/PD.1850 thing, they are different drivers!! Why do people keep comparing them? And, someone also chucked into the mix, that 'PD may know there's problem so that's why there is a '52 on the way' type of statement - why? So if PD (or any other manufacturer) produce any new drivers it's because there is a problem with an existing model???
Rant/informative post over - back to my day job.