If speakers power is under 400W use B500, for speakers over 400W use H900. For Full-Range speaker only power of 15inch bass is important, 8insh mid and 1inch hf driver can use bulbe for protection like in 'Dynacord' speakers http://www.dynacord.com/downloads/cobratop_datenblatt.pdf.
Pozdrav
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hi apexaudio
greetings yesterday i tried tlo 72 step driver on opening volume
negative 55 volt condesers blew changed condensers again same problem
is it a case of rail sticking any tips how to solve problem no part of output section was damaged and no abrnormal heating
thanking you
andrew lebon
greetings yesterday i tried tlo 72 step driver on opening volume
negative 55 volt condesers blew changed condensers again same problem
is it a case of rail sticking any tips how to solve problem no part of output section was damaged and no abrnormal heating
thanking you
andrew lebon
Do you have stabil voltage +/-15V on TL072, do you post clear pictures of step driver? Do you revert wron polarity of 10uF and ZF10 on negative side (mistake on pcb component layout)?
Regards
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Schematic is in thread, but you can use any other schematic, with add 35Hz low cut filter will be perfect.
hi apexaudio
greetings picture of step driver pcb and component insertion layout
this is what i have followed are the components circled in red zener 10 volts
and 10 uf polarity wrong
pcb of 3 step supply can you please tell me if resistances are correct postion
positive side in series and negative side both ends to hv supply
thanking you
andrew lebon
greetings picture of step driver pcb and component insertion layout
this is what i have followed are the components circled in red zener 10 volts
and 10 uf polarity wrong
pcb of 3 step supply can you please tell me if resistances are correct postion
positive side in series and negative side both ends to hv supply
thanking you
andrew lebon
Attachments
PCB component layout for TL072. 3 step circuit from vertex is corect.
Attachments
Horn-Reflex subs give sound quality of Bass-Reflex with high SPL in range 40-200Hz in small and simple box.
hi apexaudio
greetings thanks once again after revesing polarity of zener and 10uf no smoke tested amplifier on full volume 4 ohm load for 3 hrs amp and step
driver performed flawlessly tomorrow i will start 3 step pcb inserting components hope i succeed
1 today i tested your soft start but relay comes on instantly no delay used
15 volt zener 12 volt relay 30 volt regulated supply any hint why no delay
thanking you
andrew lebon
greetings thanks once again after revesing polarity of zener and 10uf no smoke tested amplifier on full volume 4 ohm load for 3 hrs amp and step
driver performed flawlessly tomorrow i will start 3 step pcb inserting components hope i succeed
1 today i tested your soft start but relay comes on instantly no delay used
15 volt zener 12 volt relay 30 volt regulated supply any hint why no delay
thanking you
andrew lebon