Wed Dec 22, 2010 7:48 pm
fuse size for als plats
just blew a fuse on one of my plats...fuse was a 4a...is this the correct size? i had my 300x2 cranking and it blew. i am surprised as the plats are rated at 1200w.
It is currently Tue May 21, 2013 3:48 am
fuse size for als plats
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(pair of) SILVER-7 TUBE AMPs
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Wed Dec 22, 2010 8:04 pm
Re: fuse size for als plats
Yes, the correct fuse is a Cooper-Bussman MDQ-4, a dual element time-delay fuse.
The reason you blew it is that although your Plats can take 1200W peaks, they can't take anything like that sustained before burning up the ribbon or the voice coils in the woofers. That's why the slow blow fuse. Your amp can put out about 50V/channel before clipping. Because it's a load invariant amp, it will continue to put out that 50V no matter what the load is. Now, Ohms law say E (volts) = I (amps) ∙ R (ohms). If your load is 4Ω and your voltage is 50 at clipping, current is 12.5A at clipping.
The reason you blew it is that although your Plats can take 1200W peaks, they can't take anything like that sustained before burning up the ribbon or the voice coils in the woofers. That's why the slow blow fuse. Your amp can put out about 50V/channel before clipping. Because it's a load invariant amp, it will continue to put out that 50V no matter what the load is. Now, Ohms law say E (volts) = I (amps) ∙ R (ohms). If your load is 4Ω and your voltage is 50 at clipping, current is 12.5A at clipping.
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
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Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
_________________
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer
Fri Dec 24, 2010 3:09 am
Re: fuse size for als plats
yeah...what bill said....
CarverFest: I just go for the arts and crafts
Fri Dec 24, 2010 3:43 am
Re: fuse size for als plats
angelod307 wrote:yeah...what bill said....
+1
BillD, You will be forever with us! RIP until we meet again on the other side...
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