anyone else notice that in the boss hf-2 there are 2 (count em) JRC4558DD chips?
I'm thinking of pulling one out and replacing the chip in my ts9dx... and then using the other one for a friends. how much should i charge? :twisted: :?:
I just read up on these... people are saying "it's hard to find a worse opamp chip..." why is this so popular then?
Quotepeople are saying "it's hard to find a worse opamp chip..." why is this so popular then?
Hype
AL
Quote from: ALQuotepeople are saying "it's hard to find a worse opamp chip..." why is this so popular then?
Hype
AL
because (insert your favourite guitarist here) had the original 80's JRC4558D opamp in his (insert overhyped pedal here).
its a bog standard dual opamp.
many prefer the sound of others.
TL072 is lower noise....
I use TL072 for my duals...
the OPA series from TI is supposed to be great and burr brown chips are also well loved around here.
alrighty then. i'll buy a bunch of chips and a socket and compare em.
maybe i'll post clips.
I'm a burr brown man...though I do have to say the JRC4558DD's sound really nice in my marshall practice amp (I've tried some RC4558's in there...sounds different...but very close). It's all a matter of slight taste IMO.
Cheers,
Nish
is there a difference between JRC4558D and DD's?
the DD attract groupies with bigger boobies...........
seriously though I think it has to do with temp tolerance although I aint sure.
Oooh! Did someone say big boobies???
Seriously, I just ordered 10 of these on friday...
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=525647&e_categoryid=268&e_pcodeid=51303
A Mouser search for the JRC part came up with these as a cross-ref part. When I get them in I'll try them out and see what kind of grainy dist I can get out of these. Has anyone else tried these out? Are they similar to the JRC part or a poor re-issue of sorts?
Quote from: KE4NYVOooh! Did someone say big boobies???
Seriously, I just ordered 10 of these on friday...
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=525647&e_categoryid=268&e_pcodeid=51303
A Mouser search for the JRC part came up with these as a cross-ref part. When I get them in I'll try them out and see what kind of grainy dist I can get out of these. Has anyone else tried these out? Are they similar to the JRC part or a poor re-issue of sorts?
wow .18! not to deter anyone from the great service and supply at small bear, but they're .40 there...
i wonder how these DD's are used in my flanger...
Quote from: no one everalrighty then. i'll buy a bunch of chips and a socket and compare em.
That..........is the best thing you could do! Then
You will know what sounds better to
You and not just what you heard or read about a certain chip etc. And just think of all the fun you'll have learning about different op-amps. :)
Quote from: Mark FQuote from: no one everalrighty then. i'll buy a bunch of chips and a socket and compare em.
That..........is the best thing you could do! Then You will know what sounds better to You and not just what you heard or read about a certain chip etc. And just think of all the fun you'll have learning about different op-amps. :)
thank you! i could use a few suggestions though for a chip compatible with the ts9dx...
any dual opamp with the same pinout.
Quote from: nelsonany dual opamp with the same pinout.
where's a resource for pinouts?
you get pinouts on datasheets. Most dual opamps share the same pinout ie V+ on pin 8 and V-/ground on pin 4.
Whenever I need to check a datasheet I just google "Partnumber datasheet"
www.alldatasheet.com usually comes up with it.