one-shot dual opamp suggestion

dorkus · 20th May 2002, 05:49 PM

hi,

i have a Sony DVP-NS500V, a cheapo DVD player which i bought for its multichannel SACD capability. it's turned out to sound rather good, at least with SACD (cd sounds mediocre but tolerable) so i figure it's worth my while to replace the opamps in it. it uses a bunch of 4558 dual opamps in SOIC packages, so i need a surface mount replacement (can't socket it). any suggestions? keep in mind that the power supply on this thing is pretty pathetic so i need something that is tolerant of such factors... a simple solder-and-play replacement. nothing too fancy here. ideas? i'm thinking OP275, OPA2604, OPA2134, LM6172, AD746... any other duals in SOIC packages you could suggest? remember, crappy power supply... so no twitchy parts please.

i know much has already been said about opamps but i can't afford to try more than one part here (i might destroy the delicate SMT solder pads), so i'm interested in hearing everyone's one-shot suggestions for my application. just reply with a simple vote for one part or another, don't need to explain why.

thanks,
marc

fmak · 20th May 2002, 06:40 PM

[QUOTE]Originally posted by dorkus
[B]hi,

----------------------------------------------

Try 286 for I/V; 2604 or 2132 for others. Watch out for the strong adhesive that Sony uses for the SMTs.

dorkus · 20th May 2002, 06:49 PM

cool, sounds good. this is just for output stage IC btw... i think the IVs are part of the LSI DAC IC they use in this model.

jam · 20th May 2002, 07:03 PM

Marc,

You are correct the ic is used as a summer and amplifier. I like the 2604 myself. You could also try buffering the outputs.

Jam

morsel · 21st May 2002, 04:59 AM

I would go with AD823 or AD8512.

20th May 2002, 05:49 PM	#1
dorkus diyAudio Member Join Date: Jun 2001 Location: NYC	one-shot dual opamp suggestion hi, i have a Sony DVP-NS500V, a cheapo DVD player which i bought for its multichannel SACD capability. it's turned out to sound rather good, at least with SACD (cd sounds mediocre but tolerable) so i figure it's worth my while to replace the opamps in it. it uses a bunch of 4558 dual opamps in SOIC packages, so i need a surface mount replacement (can't socket it). any suggestions? keep in mind that the power supply on this thing is pretty pathetic so i need something that is tolerant of such factors... a simple solder-and-play replacement. nothing too fancy here. ideas? i'm thinking OP275, OPA2604, OPA2134, LM6172, AD746... any other duals in SOIC packages you could suggest? remember, crappy power supply... so no twitchy parts please. i know much has already been said about opamps but i can't afford to try more than one part here (i might destroy the delicate SMT solder pads), so i'm interested in hearing everyone's one-shot suggestions for my application. just reply with a simple vote for one part or another, don't need to explain why. thanks, marc

20th May 2002, 06:40 PM	#2
fmak diyAudio Member Join Date: May 2001 Location: London UK	Re: one-shot dual opamp suggestion [QUOTE]Originally posted by dorkus [B]hi, ---------------------------------------------- Try 286 for I/V; 2604 or 2132 for others. Watch out for the strong adhesive that Sony uses for the SMTs.

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20th May 2002, 06:49 PM	#3
dorkus diyAudio Member Join Date: Jun 2001 Location: NYC	cool, sounds good. this is just for output stage IC btw... i think the IVs are part of the LSI DAC IC they use in this model.

20th May 2002, 07:03 PM	#4
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	Marc, You are correct the ic is used as a summer and amplifier. I like the 2604 myself. You could also try buffering the outputs. Jam

21st May 2002, 04:59 AM	#5
morsel diyAudio Member Join Date: Apr 2002 Location: Mountain View, California USA	I would go with AD823 or AD8512.

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