Pleas guys the specifications of the amplfier JRC4558 - Electronic Circuits Projects Diagrams Free

timothy · 31st August 2003, 03:30 PM

please i posted a topic here concerning a power amplifier and you requested to know the specification\s please tis is it:

POWER AC:220-240V 50/60HZ

DC POWER: 60V 70V MAX.

OUTPUT POWER MAX: 500WATTS

MICROPHONE INPUTS : 0.8mV/4.7K Ohm

PRE-AMPLIFIER: 20Hz - 20KHz _+ 1dB

TONE CONTROLS:
BASS: _+ 10dB AT 100Hz
TREBLE:_+10dB AT 10KHz

Please guys I'll be very grateful if my specifications can be met. or any slight change or modifications from you.
Thanks.

Sebi · 31st August 2003, 05:55 PM

Hmmm... JRC(or others)4558 is a pretty old dual opamp, nothing special.
I can recommend as preamp. some TDA IC with voltage controlled volume and tone... but 500W PA no idea.

timothy · 1st September 2003, 03:49 PM

Please if TDA is the best kindly give me the link regardless the output power. I'll fix the final output power my self. please kindly include the tone controls. if it has any. thanks.

Chippie · 2nd September 2003, 06:11 PM

app cct for the chip is here:

http://www.electronic-circuits-diagr...oimages/13.gif

cut 'n' boost of 15dB should be sufficient for your needs......

For a mic input, search the net..........

Ha.... the url has been edited.....ah well, just do as I did, do a search on it

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31st August 2003, 03:30 PM	#1
timothy	Pleas guys the specifications of the amplfier JRC4558 please i posted a topic here concerning a power amplifier and you requested to know the specification\s please tis is it: POWER AC:220-240V 50/60HZ DC POWER: 60V 70V MAX. OUTPUT POWER MAX: 500WATTS MICROPHONE INPUTS : 0.8mV/4.7K Ohm PRE-AMPLIFIER: 20Hz - 20KHz _+ 1dB TONE CONTROLS: BASS: _+ 10dB AT 100Hz TREBLE:_+10dB AT 10KHz Please guys I'll be very grateful if my specifications can be met. or any slight change or modifications from you. Thanks. __________________ timothy

31st August 2003, 05:55 PM	#2
Sebi	Hmmm... JRC(or others)4558 is a pretty old dual opamp, nothing special. I can recommend as preamp. some TDA IC with voltage controlled volume and tone... but 500W PA no idea.

1st September 2003, 03:49 PM	#3
timothy	please if TDA is the best kindly give me the link. Please if TDA is the best kindly give me the link regardless the output power. I'll fix the final output power my self. please kindly include the tone controls. if it has any. thanks. __________________ timothy

2nd September 2003, 06:11 PM	#4
Chippie	app cct for the chip is here: http://www.electronic-circuits-diagr...oimages/13.gif cut 'n' boost of 15dB should be sufficient for your needs...... For a mic input, search the net.......... Ha.... the url has been edited.....ah well, just do as I did, do a search on it