it depends on what cut-off frequency are you going to use for your mid to hi.
cut-off frequency depends on the size of the mouth of the compression horn.
have a nice day
jojo
sir jojo.
do you have formula to calculate? or just used the highpass passive crossover calculator?
thanks.
hi guys,im a newbie here. Pls help me with my Amps. i Have 2 SoundPower Amplifier and it got flooded by the typhoon ondoy. the problem now is, it always blow after a minute,we checked all the circuits,power supply etc. and replaced the damage transistor,but still the power transistor blows. what should i do? is there any chance to fix my amps?
All the responce are appreciated.tnx
All the responce are appreciated.tnx
sir jojo. . what do you think will be better. .
per side setup:
2pc. 186 Bins for LO (powered by phonic xp5000)
3pc. Behringer Eurolive B215D
(Active 550-Watt 2-Way PA Speaker System with 15" Woofer and 1.35" Compression Driver)
or
2pc. 186 Bins for LO (powered by phonic xp5000)
2pc. MT122 (powered by phnic 3000)
Im thinking about using powered speaker because they are easier to setup. . .
thank you
per side setup:
2pc. 186 Bins for LO (powered by phonic xp5000)
3pc. Behringer Eurolive B215D
(Active 550-Watt 2-Way PA Speaker System with 15" Woofer and 1.35" Compression Driver)
or
2pc. 186 Bins for LO (powered by phonic xp5000)
2pc. MT122 (powered by phnic 3000)
Im thinking about using powered speaker because they are easier to setup. . .
thank you
sir kindly email me the measurement of w bin so that i can make it atleast 2 pcs. heres my email address roven_liporada@yahoo.com
thahx a lot.
thahx a lot.
yup, bias circuit is suspect, when you change a damaged transistor, look for open resistors, some resistors might look okey, but a dmm will reveal if they have drifted way off in value.
remember, the key to successful repair is getting all the bad parts, replacing them with good new parts, if you miss out on one and power on, you will most likely let out that magic smoke...
so be patient, take your time, don't rush, and get those bad parts, identify them and get them replaced.
only then can you feel confident to power up.
Hi Sir AudioMachine
We already replaced the bias control,and it runs for about 3hrs,we thought that the amp is recovering and get back to the normal condition until we turn it off(so happy that night) The next day we turn it on for testing, after the clicking sound of the relays,it blows again!
we are so crazy about the condition of my amps. But i'm still hoping that my amps will get back to the normal condition. Any idea about my amp? Hi Sir AudioMachine
We already replaced the bias control,and it runs for about 3hrs,we thought that the amp is recovering and get back to the normal condition until we turn it off(so happy that night) The next day we turn it on for testing, after the clicking sound of the relays,it blows again!
@djeclair
Did the amp behaved "normal" and played music after the repair? When we say normal it means that it doesn't exhibit any instabilities like the speaker "seems like breathing" even played at very low volumes or no music at all or
the amp played music but you notices that you have to turn the gain up more that usual, Any of these are signs of instabilities.
Now assuming that the amp behaved after the repair (dc offset stable, bias stable, no signs of oscillation, or overheating) and played music flawlessly but suddenly when you turn it on the next day it blows. You may be a victim of a counterfeit transistors.
Regards
Last edited:
@AudioMachine
Hi Sir AudioMachine
yes sir the amp is normal after the repair and we did play music for about 3hrs. The music is clear,no humming,thats why we assumed that the amp is normal. And regarding about the transistors that we replaced from the damaged one's, i think i'm not a victim of counterfeiting because we get that from the other amp,because it has the same value.
@Tony-BTW man thanks for the response,appreciate it!
Hi Sir AudioMachine
yes sir the amp is normal after the repair and we did play music for about 3hrs. The music is clear,no humming,thats why we assumed that the amp is normal. And regarding about the transistors that we replaced from the damaged one's, i think i'm not a victim of counterfeiting because we get that from the other amp,because it has the same value.
@Tony-BTW man thanks for the response,appreciate it!
@djeclair
ahh you salvage parts from the other amplifier. Could you post some pics of the amp module? and meanwhile you could look for these, cold solder joints, discolored pcb traces (the copper traces is corroding underneath the protective lacquer) pinhole blast marks on the components, you may have to use a magnifying lens and last look hairline cracks on the pcb traces.
regards
ahh you salvage parts from the other amplifier. Could you post some pics of the amp module? and meanwhile you could look for these, cold solder joints, discolored pcb traces (the copper traces is corroding underneath the protective lacquer) pinhole blast marks on the components, you may have to use a magnifying lens and last look hairline cracks on the pcb traces.
regards
Sir AudioMachine
This is another prooblem, i don't know how to post picture here
first reply,Sir AudioMachine
This is another prooblem, i don't know how to post picture here
then follow steps...
this might help...
regards,
ees
Attachments
Thank you very much sir eesbiboi, it helps a lot, appreciate it
np
so we all enjoy...
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