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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Sub Sonic Filter
Sub Sonic Filter
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Old 19th July 2017, 10:13 AM   #11
Zero D is offline Zero D  United Kingdom
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@ gigigirl

"Snell electronic cross-over" - What is the input impedance & output impedance/resistance ?

"Shue Class D base amp" - No idea what this is ! Did you mean Sure Class D Bass Amp ? Either way, What is the input impedance ?

The reason i need to know, is so the filter can be matched to the above
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Old 20th July 2017, 04:28 AM   #12
gigigirl is offline gigigirl
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Sorry absolutely no idea
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Old 20th July 2017, 05:11 AM   #13
Gopher is offline Gopher  United Kingdom
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Ever heard of Google? It can be found on t'Interweb.
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Old 20th July 2017, 05:55 AM   #14
gigigirl is offline gigigirl
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Sorry, completely over my head
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Old 20th July 2017, 07:17 AM   #15
Zero D is offline Zero D  United Kingdom
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@ gigigirl

Don't worry, the info should be in the manuals etc, if you have them ? If not, try to obtain them from the vendors etc
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Old 20th July 2017, 07:47 AM   #16
Grasso789 is offline Grasso789  Germany
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Regarding turn-over f and steepness, i use power amps with built-in 1st-order 15 Hz hi-pass, have another such hi-pass in place at line-level and yet another one archieved by negative feed-back of the phono preamp. I want to mostly tame play-back of vinyl, which has been warped by exposition to sunlight, and drop level of fundamental pick-up resonance but also grind the edge off bass-exploitation CDs.
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Old 20th July 2017, 09:21 AM   #17
dotneck335 is offline dotneck335  United States
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Rod Elliot's subsonic filter would do nicely:
Project 99 - Subsonic Filter
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Old 21st July 2017, 11:28 PM   #18
gigigirl is offline gigigirl
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Default Now that I can build

Thanks Dockneck, That i can build & it also gives me the ability to tayloy the cut off slope to my need in my room. Thanks guys for all your patience & help.
Cheers
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Old 21st July 2019, 03:42 AM   #19
Naddiarts is offline Naddiarts
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Join Date: Jul 2019
Smile Diy subsonic filter

Hi. My name is Nadia. I am from Buenos Aires Argentina. I need a subsonic filter to put in my phono imput in my sintoamplifier Yamaha RV595A. I got a JVC quartz turntable QL-F4. I got a lot of rumbo e incluso my speakers. I do not want to break them.
I saw a couple of filters (one for each channel) in u$s 22 plus shipping. But in my country is very difficult to receive any foreign product these days.
I need to do them myself. I can buy down here the rca males and fe males and the caps but i don't know which valiente to buy. I'll be very happy if Anyone can tell me which caps to buy and how to assembly the filter.

I excuse me for my english is not good enough..
Regards.
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Old 24th July 2019, 05:15 PM   #20
EmuMannen is offline EmuMannen  Sweden
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Quote:
Originally Posted by dotneck335 View Post
Rod Elliot's subsonic filter would do nicely:
Project 99 - Subsonic Filter
I use Rods P99 and it works great.
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