AudioAficionado.org  

Go Back   AudioAficionado.org > Manufacturers Forums > Infinity Speakers

Infinity Speakers Pursuit of Perfect Sound

Reply
 
Thread Tools Display Modes
  #1  
Old 03-28-2016, 10:03 AM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default RS1b Passive High Pass Filter

I've been trying out different makes of capacitors on the (now outboard) high pass filters to the mid/high monoblock power amplifier inputs.
First I changed out the Wondercaps for RTX Multicaps which gave a big improvement. Now I've just tried V-Cap CuTF which sounded very hard and diffused. What gives? Theres a huge difference in quality and cost there...
Has anyone else experimented with other makes in this HPF or do you have any particular recommendations?
Reply With Quote
  #2  
Old 04-26-2016, 12:22 PM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

Nothing ventured nothing gained. I'm now going to change from RTX to Mundorf Silver Gold capacitors in the passive HP circuit. It'll require 4 x 0.01uF paralleled in each channel i.e. eight caps.
If these are as good as they say then I'm in for a treat, if not I'll just cry into my beer.
Reply With Quote
  #3  
Old 04-26-2016, 10:57 PM
lwschwartz lwschwartz is offline
Senior Member


 
Join Date: Oct 2010
Location: Tennessee, Maryland, and Florida
Posts: 363
Default

It is most interesting to hear of your experiences with rotating caps. Keep us posted on your progress and thoughts.
Reply With Quote
  #4  
Old 04-28-2016, 03:37 PM
paulphoosreal paulphoosreal is offline
Guest
 
Join Date: Aug 2015
Location: Indianapolis
Posts: 137
Default

I use to use the M-K high pass filters with very good effect. They are a 12db high pass filter at 80HZ. If you want to try it I believe I know where one is. It is 80hz high pass only. I don't know if this helps but good luck!
Reply With Quote
  #5  
Old 04-28-2016, 06:25 PM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

Many thanks for the suggestion, its something I'd like to try after having experimented with various makes of series capacitors. By directly connecting the capacitors in circuit both eliminates the switching and the RCA plug socket junctions in the bass servo unit.
Just by removing the capacitors from the unit to an external wired connection has already gained improved transparency.
I'm presently awaiting an order for eight Mundorf capacitors. I'll post the results here when installed.
Reply With Quote
  #6  
Old 05-06-2016, 03:35 PM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

Today I soldered in eight Mundorf 0.01uF silver gold oil capacitors for the passive high pass filter, four paralleled per channel.
I was not expecting good results until the capacitors had burnt in for at least 20 hours, The first hour was revelatory, from the off the mid range was far better, bass more defined & extended. After three hours listening it further opened up, individual choir members easily located as well as an improving stage width & depth.
Can't wait to hear what happens during the remaining break-in time. These caps are definitely keepers, leagues better than the original ones.
For 250 uk pounds this is a huge upgrade.
My RS1b is operated with two stereo interconnects, one suited to the bass (copper teflon) and another (silver) for mid/hi amplifiers. The speakers are also modified for biwire operation.
Reply With Quote
  #7  
Old 05-06-2016, 04:26 PM
cleeds cleeds is offline
Senior Member


 
Join Date: Jul 2010
Posts: 1,432
Default

Quote:
Originally Posted by AudioGremlin View Post
My RS1b is ... also modified for biwire operation.
I'm confused, AudioGremlin. The RS1B system is designed for bi-amplification using the Infinity xover/servo. How would you biwire such a system?
Reply With Quote
  #8  
Old 05-06-2016, 05:59 PM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

Mid/hi towers have their EMIMs and EMITs groups separated. EMITS have an additional pair of terminals. the EMINS & EMIT groups have their own cables, the EMIM group is via the existing binding posts. Cogan-Hall cables types chosen for Mid & Hi.
I'll add a photo later if you wish.
Reply With Quote
  #9  
Old 05-06-2016, 06:03 PM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

I should add the Rs1b is biamplified conventionally, Manley NC250 mono's for mid/hi & Classe 300w mono's for bass.
Reply With Quote
  #10  
Old 05-07-2016, 07:11 AM
AudioGremlin AudioGremlin is offline
Member
 
Join Date: Nov 2012
Location: Black Isle Scottish Highlands
Posts: 672
Default

ForumRunner_20160507_121053.jpg



ForumRunner_20160507_121115.jpg
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Audioaficionado.org tested by Norton Internet Security

All times are GMT -4. The time now is 07:28 PM.



Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
©Copyright 2009-2023 AudioAficionado.org.Privately owned, All Rights Reserved.
Audio Aficionado Sponsors
AudioAficionado Subscriber
AudioAficionado Subscriber
Inspire By Dennis Had
Inspire By Dennis Had
Harmonic Resolution Systems
Harmonic Resolution Systems
Wyred4Sound
Wyred4Sound
Dragonfire Acoustics
Dragonfire Acoustics
GIK Acoustics
GIK Acoustics
Esoteric
Esoteric
AC Infinity
AC Infinity
JL Audio
JL Audio
Add Powr
Add Powr
Accuphase - Soulution
Accuphase - Soulution
Audio by E
Audio by E
Canton
Canton
Bryston
Bryston
WireWorld Cables
WireWorld Cables
Stillpoints
Stillpoints
Bricasti Design
Bricasti Design
Furutech
Furutech
Shunyata Research
Shunyata Research
Legend Audio & Video
Legend Audio & Video