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JayDC
Posts: 849
Joined: Sat Jan 13, 2007 5:45 pm
Location: Philadelphia

Post: # 14788Unread post JayDC
Fri May 06, 2011 3:45 pm

markrob wrote:Hi Jay,

Check you email. I have sent the images I have from Flo. Let me know if you don't get them.

It is low impedance. Note the indication for 50 ohm input on the schematic. However, most SS devices have very low output impedances, CD players included, so it should be no problem. It might be an issue if you try to drive it from an older tube based device.

Mark
I see your point mark.. that is a good design consideration..
generally its for reproduction.. but i like to play wif it sometimes.. :P

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alein12
Posts: 22
Joined: Wed Mar 30, 2011 3:32 pm

Re: Inverse RIAA curve Circuit + Info

Post: # 26177Unread post alein12
Thu Jun 27, 2013 5:39 am

This preamp called the Jamaika preamp should have been credited to the designer Charlie Hertsburg of Kinara. I have an original copy of the schematic.

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JOJO
Posts: 2
Joined: Tue May 05, 2020 12:51 pm

Re: Inverse RIAA curve Circuit + Info

Post: # 55717Unread post JOJO
Fri May 15, 2020 11:04 pm

HI !!

Alguno armo el pre ? / Someone Didi It ?

Thanks

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groovin'
Posts: 2
Joined: Thu Apr 15, 2021 1:01 am

Re: Inverse RIAA curve Circuit + Info

Post: # 58590Unread post groovin'
Sat May 15, 2021 3:14 am

Hi to all,
I'm bulding on a pcb the Riaa filter from Floka design.
Here is a schematic, i'm not sure if i interpretate well his drawing filter Riaa.
Any help is welcome!
Image

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