RIAA Filter build help

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basplin
Posts: 64
Joined: Wed Jul 24, 2019 1:45 pm

RIAA Filter build help

Post: # 55600Unread post basplin
Sat May 02, 2020 10:14 am

Hi all - I'm trying to build Flo's RIAA encoder (found here: http://floka.com/lofi/riaa_enc_flo.jpg) and am a little confused about where the dual power source connects versus where the input for the audio signal is. Using J111 JFETs. I'd assume it's somewhere on the + & - obviously, but not sure where exactly. Can anyone point me in the right direction? Thanks!

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flozki
Posts: 575
Joined: Fri May 19, 2006 4:40 am
Location: switzerland
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Re: RIAA Filter build help

Post: # 55601Unread post flozki
Sat May 02, 2020 10:19 am

maybe
better buy a caruso pcb and populate just the encoder part....
www.vinylike.com
i can ship in a letter and you can paypal the money.

super easy. and if you are not familar with opamp dual supoly... google & youtube is your friend.

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d
Posts: 205
Joined: Thu Oct 05, 2006 7:42 am
Location: Lithuania

Re: RIAA Filter build help

Post: # 55602Unread post d
Sat May 02, 2020 10:48 am

basplin i grately suggest you take flo caruso psb. very good preamp with riaa. everything you need. sound very good. in my time i have overcome a lot of problems. i dont know the price but when i bought... the first version, maybe 8 years ago it still works like i charm. used with cutters with and without feedback.
_______

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basplin
Posts: 64
Joined: Wed Jul 24, 2019 1:45 pm

Re: RIAA Filter build help

Post: # 55603Unread post basplin
Sat May 02, 2020 12:12 pm

flozki wrote:
Sat May 02, 2020 10:19 am
maybe
better buy a caruso pcb and populate just the encoder part....
www.vinylike.com
i can ship in a letter and you can paypal the money.

super easy. and if you are not familar with opamp dual supoly... google & youtube is your friend.
Thanks Flo! I just e-mailed you.
Last edited by basplin on Sat May 02, 2020 12:37 pm, edited 1 time in total.

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basplin
Posts: 64
Joined: Wed Jul 24, 2019 1:45 pm

Re: RIAA Filter build help

Post: # 55604Unread post basplin
Sat May 02, 2020 12:14 pm

d wrote:
Sat May 02, 2020 10:48 am
basplin i grately suggest you take flo caruso psb. very good preamp with riaa. everything you need. sound very good. in my time i have overcome a lot of problems. i dont know the price but when i bought... the first version, maybe 8 years ago it still works like i charm. used with cutters with and without feedback.
Thanks for the advice, it seems like these preamps/filters are the best way to go!

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d
Posts: 205
Joined: Thu Oct 05, 2006 7:42 am
Location: Lithuania

Re: RIAA Filter build help

Post: # 55605Unread post d
Sat May 02, 2020 12:19 pm

you are welcome. yes it goes very accurate. i thought again and really did not get any better solution than caruso preamp.
_______

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