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  #21  
Old 04-03-2017, 04:49 AM
dbphd dbphd is online now
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The problem with that is I want to shunt frequencies below 100 Hz away from the LS50s where distortion is said to rise. I bought a used Bryston 10B today to do just that while maintaining the balanced link.
Charles Hansen advised me to not insert even a balanced bass manager between the K-5xeMP preamp and VX-5 Twenty amp, so the setup is simply balanced from C-5xeMP disc player to amp. The sound is superb. I was advised it's OK to use single-ended from the preamp to subs that supplement LF, so I will be using low-pass from a Beveridge RM-3 with a 100 Hz card -- only control is level of output. I'll try to sell the too hastily bought Bryston 10B.

db
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  #22  
Old 04-03-2017, 10:25 AM
d_elm d_elm is online now
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Originally Posted by dbphd View Post
Charles Hansen advised me to not insert even a balanced bass manager between the K-5xeMP preamp and VX-5 Twenty amp, so the setup is simply balanced from C-5xeMP disc player to amp. The sound is superb. I was advised it's OK to use single-ended from the preamp to subs that supplement LF, so I will be using low-pass from a Beveridge RM-3 with a 100 Hz card -- only control is level of output. I'll try to sell the too hastily bought Bryston 10B.

db
I have a single-ended Bryston 10B connected to the single-ended output of a KX-5 twenty and previously to a K-5xeMP. No effect on the balanced output of the preamps.
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  #23  
Old 04-04-2017, 06:35 AM
dbphd dbphd is online now
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I have a single-ended Bryston 10B connected to the single-ended output of a KX-5 twenty and previously to a K-5xeMP. No effect on the balanced output of the preamps.
As I understand Hansen's position, there is no problem with that unless you interpose the 10B between the preamp and amp. I had planned to high-pass to the amp above 100 Hz, low-pass to the subs below 100 Hz using a balanced 10B and was advised not to do that. Now I plan to only low-pass to the subs, staying out of the preamp-to-amp link. Does the output of your 10B go to an Ayre amp?

I suppose I could try both, because counterposed to what I understand is a zero feedback issue I suspect the LS50s would be well served by shunting frequencies below 100 Hz from them.

db
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  #24  
Old 04-05-2017, 10:54 PM
d_elm d_elm is online now
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Originally Posted by dbphd View Post
As I understand Hansen's position, there is no problem with that unless you interpose the 10B between the preamp and amp. I had planned to high-pass to the amp above 100 Hz, low-pass to the subs below 100 Hz using a balanced 10B and was advised not to do that. Now I plan to only low-pass to the subs, staying out of the preamp-to-amp link. Does the output of your 10B go to an Ayre amp?

I suppose I could try both, because counterposed to what I understand is a zero feedback issue I suspect the LS50s would be well served by shunting frequencies below 100 Hz from them.

db
Single-ended output pair from the KX-5/20 goes to 10B, which drives a quad amp for a sub, and one balanced output pair goes to a VX-5/20 to drive quad esl 63s. The esls get the full frequency range but drop off below 45Hz. The bass is only for 20 to 50 range. 10B is set at 30HZ with second order filter. I modified the circuit so the volume control is on the low pass circuit. In my case each channel is attenuated 1db. Passive summing of two channels for single bass.
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  #25  
Old 04-08-2017, 05:06 AM
dbphd dbphd is online now
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Originally Posted by d_elm View Post
Single-ended output pair from the KX-5/20 goes to 10B, which drives a quad amp for a sub, and one balanced output pair goes to a VX-5/20 to drive quad esl 63s. The esls get the full frequency range but drop off below 45Hz. The bass is only for 20 to 50 range. 10B is set at 30HZ with second order filter. I modified the circuit so the volume control is on the low pass circuit. In my case each channel is attenuated 1db. Passive summing of two channels for single bass.
That seems to be the setup Charles Hansen recommends if you are using a sub, i.e., nothing intervening between the balanced preamp and amp connection and using single-ended for the sub.

db
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  #26  
Old 04-25-2017, 01:49 PM
will will is offline
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I'm close to doing the deed and getting the KX-5 Twenty.

Man, I love my K-5xeMP but keep going back to GregGale's and others' remarks about the not so subtle difference between the two preamps. I always try to take things with a grain of salt but have been left foolish each time I've upgraded.

Sorry, I recall a post that said Ayre's prices have gone up but can't find it now. What's the current price for the KX-5 Twenty? Thanks.

Last edited by will; 04-25-2017 at 02:30 PM.
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  #27  
Old 04-25-2017, 02:53 PM
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I was studying up on the Twenty myself...reading everything I could. Some people think the "Plain" KXR is better in their system than the Twenty. Why spend another 9-10K if you don't have to? I'd try to compare both before pulling the trigger. Might be the best 10K you ever saved.
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D'agostino Momentum 400,Audio Research REF 160M, Audio Note Jinro, Audio Research REF 10,Ayre KX-R Twenty, Pass Labs XA-25, Luxman C900U, JA Pearl 3 (Sapele), Audio Note E/SPX Al Nico (Makassar), Devore Fidelity O'96s (Wild Cherry), JA Pulsars, Salk SoundScape 8, Esoteric K-01X 30th Anniversary Model (Black), Ayre DX5 DSD

VINTAGE RECEIVERS: Sansui G901,G3500,G7500,QRX-9001,661,771,881,Eight Deluxe,Pioneer 9100 INT,SX-850,SX-1250,QX-949,SX-5570 ,SX-5580,SX-7730,SX-9930,SX-626,SX-727,SX-828,SX-636,SX-737,SX-838,SX-939,SX-1010,SX-9000,SX-D7000 (NIB),Kenwood KR-11000G,Eleven GX,Super Eleven,9600,Marantz 2325,Model 19,Technics SA-205,SA-700,SA-800,Luxman R-1120,425 INT,R-117,Sanyo JCX-2900K,ONKYO TX-2500,4500,8500

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  #28  
Old 04-25-2017, 03:35 PM
Bar81 Bar81 is online now
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Quote:
Originally Posted by will View Post
Sorry, I recall a post that said Ayre's prices have gone up but can't find it now
You're thinking of the -R series price hike last month.


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Originally Posted by Billion$Baby View Post
Some people think the "Plain" KXR is better in their system than the Twenty.
I haven't laughed that hard in a while. Thanks for the comedy break.
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Last edited by Bar81; 04-25-2017 at 03:38 PM.
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  #29  
Old 04-25-2017, 03:56 PM
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Wasn't meant to be a joke. Ive got no skin in the game. Perhaps the Twenty's that were Demoed were brand spanking new and not broken in...as compared to the KXR that was already in their systems. Some of the comments may have come on this board. If I find them I will copy the comments here. Did you have the KXR before purchasing the Twenty?
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D'agostino Momentum 400,Audio Research REF 160M, Audio Note Jinro, Audio Research REF 10,Ayre KX-R Twenty, Pass Labs XA-25, Luxman C900U, JA Pearl 3 (Sapele), Audio Note E/SPX Al Nico (Makassar), Devore Fidelity O'96s (Wild Cherry), JA Pulsars, Salk SoundScape 8, Esoteric K-01X 30th Anniversary Model (Black), Ayre DX5 DSD

VINTAGE RECEIVERS: Sansui G901,G3500,G7500,QRX-9001,661,771,881,Eight Deluxe,Pioneer 9100 INT,SX-850,SX-1250,QX-949,SX-5570 ,SX-5580,SX-7730,SX-9930,SX-626,SX-727,SX-828,SX-636,SX-737,SX-838,SX-939,SX-1010,SX-9000,SX-D7000 (NIB),Kenwood KR-11000G,Eleven GX,Super Eleven,9600,Marantz 2325,Model 19,Technics SA-205,SA-700,SA-800,Luxman R-1120,425 INT,R-117,Sanyo JCX-2900K,ONKYO TX-2500,4500,8500

SPEAKERS - JBL 4312A, L166, 4412

CD/EQ Etc: Pioneer SG-9800 EQ, Marantz Pearl SA KI CD/SACD.
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  #30  
Old 04-25-2017, 04:50 PM
Bar81 Bar81 is online now
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Quote:
Originally Posted by Billion$Baby View Post
Wasn't meant to be a joke. Ive got no skin in the game. Perhaps the Twenty's that were Demoed were brand spanking new and not broken in...as compared to the KXR that was already in their systems. Some of the comments may have come on this board. If I find them I will copy the comments here. Did you have the KXR before purchasing the Twenty?
Of course - I purchased the KX-R just after its release and then upgraded to the Twenty years later. I'm intimately familiar with both pieces each over several years.

The KX-R Twenty is not an upgrade, it's not "better", it's a completely different preamp that shames the original release.
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