AudioAficionado.org  

Go Back   AudioAficionado.org > Manufacturers Forums > Cary Audio Design

Cary Audio Design Superior Quality and Value

Reply
 
Thread Tools Display Modes
  #4161  
Old 09-26-2017, 09:23 PM
CoGT3 CoGT3 is online now
Member
 
Join Date: Oct 2012
Posts: 58
Default

AA, speaking of the regularly scheduled programming, how's the 45 PSE holding up?
Reply With Quote
  #4162  
Old 09-29-2017, 09:21 PM
Comzee Comzee is offline
Member
 
Join Date: Aug 2016
Posts: 79
Default

Has anybody ever tried or considered the EL156?
I see there's adapters online to convert 10pin -> 8pin to make them work like kt88.
Reply With Quote
  #4163  
Old 10-10-2017, 12:14 AM
Analog Addict Analog Addict is online now
Senior Member
 
Join Date: Jul 2016
Posts: 136
Default

Quote:
Originally Posted by CoGT3 View Post
AA, speaking of the regularly scheduled programming, how's the 45 PSE holding up?
Great. Had a couple of AK buddies in tonight, and one of them couldn't believe that I can power four stacks of Altecs with it. I haven't spoken with Dennis recently, but last I heard there was some kind of hangup with his chassis supplier, so things may have slowed down at the shop. Meanwhile, I'm hoping that Straitwire will layout and cut the chassis for my 3 tube per channel 71-A PSE soon...
Reply With Quote
  #4164  
Old 10-14-2017, 09:55 AM
Rosco65 Rosco65 is offline
Senior Member
 
Join Date: Jan 2016
Posts: 237
Default

Quote:
Originally Posted by Analog Addict View Post
Great. Had a couple of AK buddies in tonight, and one of them couldn't believe that I can power four stacks of Altecs with it. I haven't spoken with Dennis recently, but last I heard there was some kind of hangup with his chassis supplier, so things may have slowed down at the shop. Meanwhile, I'm hoping that Straitwire will layout and cut the chassis for my 3 tube per channel 71-A PSE soon...
How do you like the Altecs with the Inspire? I have some Altec components that need to find their way into a new application (4 x 414A, 2 x 802D, 2 x 32A). The 414’s have limited LF output on their best day, so I am confronted with the need to either get the most bass I can out of them or accept the inevitability supplementing with active bass (probably the direction I will go). Compounding the challenge is my limited available space.

A poster on another forum started a long thread on crossover modifications to a 9844B monitor. He ended up with a slightly modified N800F crossover (using a 806 driver) with the A19 contour network added. He runs them in 2.5 way configuration, with the second 414 brought in with a single inductor at 200hz or so. This thread inspired me to try the 414’s in an OB configuration. The second driver should offset some baffle loss (to a point) and keeping it out of the midrange will help keep the point source aspect of the main 414A. I can then cross over the 802D with the HF portion of Joe Esmilla’s 3Khz crossover/eq. A single 414A would run full range with the second 414A brought in as a bass Adder below 200hz or so. I expect the size of the baffle to be similar to a Magnepan SMGA. Impedance should remain no lower than 12 ohms or so, since the 414A is actually more like a 25 ohm driver over most of its range.
Reply With Quote
  #4165  
Old 10-17-2017, 10:30 PM
Analog Addict Analog Addict is online now
Senior Member
 
Join Date: Jul 2016
Posts: 136
Default

A dual woofer OB design would never work with Inspire amps....

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

Dennis actually set these up as a true dual woofer design with the woofers running in parallel. The extra driver adds approx 3db spl. The quality of the Altec woofers is ahem...better than the drivers we were using, and they still sounded fantastic with any Inspire amp. Given that the sensitivity of the Altec woofers is probably 6-8 db better than the ones we used, I think even a 45 SET amp should work extremely well in this application

Last edited by Analog Addict; 10-17-2017 at 10:37 PM.
Reply With Quote
  #4166  
Old 10-18-2017, 07:26 AM
david45 david45 is online now
Junior Member
 
Join Date: Sep 2016
Posts: 16
Default

Analog Addict,

Thanks for posting pictures of these OB speakers. Considering the extra woofer and the 3db boost in terms of sensitivity, just how efficient are they and how low can they play?

Not that I'm in the market for new speakers, but I have been using a pair of open-baffle speakers designed by Danny Ritchie of GR Research for a few months now along with dual servo subwoofers (also OB) and I am now considering getting a new amplifier and pre. They mesure at 93.5 db all the way down to about 80 hertz and provided they are being used with the OB subwoofers, they can be high-passed anywhere from 80 to 200hz ideally with a cap in between the pre and the amplifier.

For the last few days, I have been using a Line Magnetic 210ia integrated with 300b tubes that I have here on loan and I really like how it sounds. It excels at mid-range and transparency along with very good tri-dimensionality so that is just about perfect for the kind of music I like listening late at night (small ensemble, girl and a guitar, anything with piano or close mic vocals, etc). The speakers are getting a full-range signal and yet the big meter on the front of the amplifier pretty much never indicates over 0.5 watt and maybe 1 watt if I'm really pushing it during the day (ambiance music while doing random stuff and not critical listening). My room isn't the smallest at roughly 3000ft3 but everything is set up in a near field arrangement and the listening position is at about 6 feet from the speakers only.

I am really surprised that a 300b amplifier with only 8 watts per channel can work so well in my system and it makes me wonder if a 45 PSE and its glorious 3.5 watts could be an even better fit especially if it is being hi-passed (?). Could it also benefit from the IIPS mod?
I realize that Denis still isn't offering his own version of your amplifier and that you recommend speakers that are 100db efficient or even higher, but I am intrigued nevertheless.

It's been a few months since your first listening session of the kt77 PSE prototype in triode and I also wonder how things are evolving as this is also right up my alley especially if it can be dialed-in to provide a maximum of mid-range magic similar to a 2a3-300b-45 amplifier but at affordable output tube prices.

I am also considering a triode strapped amp built on the 45 chassis with 20 watts transformers and IIPS along with a pre just like Florida Boy and Musica Amantem.

Also in the cards would be to fly to North Carolina and stop by Cary for a listening session if that is a possibility that could help me make up my mind.

Cheers,

David


Quote:
Originally Posted by Analog Addict View Post
A dual woofer OB design would never work with Inspire amps....

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr

Dennis actually set these up as a true dual woofer design with the woofers running in parallel. The extra driver adds approx 3db spl. The quality of the Altec woofers is ahem...better than the drivers we were using, and they still sounded fantastic with any Inspire amp. Given that the sensitivity of the Altec woofers is probably 6-8 db better than the ones we used, I think even a 45 SET amp should work extremely well in this application

Last edited by david45; 10-18-2017 at 12:24 PM.
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 02:36 PM.

Follow @AudioAficionado
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
©Copyright 2009-2017 AudioAficionado.org.Privately owned, All Rights Reserved.
Audio Aficionado Sponsors
AudioAficionado Subscriber
AudioAficionado Subscriber
Fortress
Fortress
Harmonic Resolution Systems
Harmonic Resolution Systems
Sound Anchors
Sound Anchors
Audeze
Audeze
GIK Acoustics
GIK Acoustics
Esoteric
Esoteric
AC Infinity
AC Infinity
JL Audio
JL Audio
Acoustic Sciences Corportation
Acoustic Sciences Corportation
Legend Audio & Video
Legend Audio & Video
Audio by E
Audio by E
Canton
Canton
Bryston
Bryston
WireWorld Cables
WireWorld Cables
Stillpoints
Stillpoints
Bricasti Design
Bricasti Design
Wyred 4 Sound
Wyred 4 Sound
Shunyata Research
Shunyata Research
Accuphase
Accuphase