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Inspire by Dennis Had Enjoying Vacuum Tube Audio

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  #4151  
Old 09-21-2017, 03:24 PM
Musica Amantem Musica Amantem is offline
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1. It is not Absolute Sound, but Robert Harley, from whom I bought his first audiophile book back in 1994. A foundation you may have missed.

2. I keep the TONE of the sourced material through the Inspire LP-27's PRE outs going directly to my SUB. There is no filtering in that signal. This blends perfectly with the amp's high-passed full range signal which itself preserves that TONE at those higher frequencies.

3. The nominal low-end spec in the mains is usually the lowest frequency from an actual roll-off that starts much earlier, so you are already missing much of the assumed 50Hz-up from your mains as it is.

4. I was very surprised to hear my amp develop such dynamics and finesse, as I had never heard it do that before the filtering thing, in spite of its great sound out of the box.

5. I assume your position would also preclude you from replacing CAPS, or the like, not to "affect" the original setup. I bet you also believe 1's and 0's are always the same ... Give me a break!

BTW, you keep arguing about the length of cables. I don't understand the relevance of that known fact in the context of the filtering setup I propose. The length of those filters is about a couple inches and these go at the end of existing RCA interconnects feeding the amp. The length of bass cables have nothing to do with this approach.

Finally, there are more sophisticated ways to filter low frequencies in support of better dynamics, headroom and the like in a flea-powered amp-based system which otherwise excels in low-to mid and high frequencies. The proposed simple, inexpensive and apparently non-intrusive filters are a very easy and affordable way of testing your preconceptions.

Last edited by Musica Amantem; 09-21-2017 at 03:43 PM.
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  #4152  
Old 09-22-2017, 02:31 PM
Wgarcia Wgarcia is offline
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There are many misunderstandings by you of what I've posted so I'll try to clear some of them up, as hey…I'm a giver, and be warned I might involve what I call humor in this post. I test my mains speakers frequency response by listening to them…a test CD clearly shows where the bass diminishes, and an RT analyzer can also be implemented if one needs to. I'm not missing anything. Biamping, which is exactly what you propose, has been around a LONG time and not a revelatory concept regardless of Robert Harley's book which, indeed, I missed. The length of single ended cables to MY powered woofers in your described biamp scenario would be about 10 feet each (although when I tried this setup I used a much shorter cable as described in comments you claimed to not understand), and indeed have zero to do with the filters festooned to the power amp…more to do with noise and signal loss of long unbalanced cables, something I've dealt with professionally, personally, and in my role as a Master Gardener and mechanical watch collector. My point about the preamp signal going directly to the the subs was also missed, as I noted that a REL high level signal uses the signal from the POWER AMP, and thus the tone of same. My Fire Bottle is not the "flea watt" version, it's the 12 watt per side HO version which is likely using a couple of its watts when I listen at normal levels and has plenty of headroom, unlike an amp with 3 or 4 watts total…big difference there with finesse and dynamics for days. Assuming my position without paying attention to what I actually say seems like a waste of time for you, but I get it…you hear what you want to hear. Also note that I DID test your Filterpalooza concept (you missed that? really?) and found it not up to my standards as an active audio professional with ears of pure gold (maybe more like pewter but hey…I'm old). Thanks anyway for sharing your joy of discovering biamping, and I'm sure there are people out there in foreign lands or Los Angeles who will line up to join you in the Flea Watt with Filters campaign for Dynamics and Headroom (FWFCDAH). Soldier on!
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  #4153  
Old 09-22-2017, 02:51 PM
Musica Amantem Musica Amantem is offline
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Originally Posted by Wgarcia View Post
There are many misunderstandings by you of what I've posted so I'll try to clear some of them up, as hey…I'm a giver, and be warned I might involve what I call humor in this post. I test my mains speakers frequency response by listening to them…a test CD clearly shows where the bass diminishes, and an RT analyzer can also be implemented if one needs to. I'm not missing anything. Biamping, which is exactly what you propose, has been around a LONG time and not a revelatory concept regardless of Robert Harley's book which, indeed, I missed. The length of single ended cables to MY powered woofers in your described biamp scenario would be about 10 feet each (although when I tried this setup I used a much shorter cable as described in comments you claimed to not understand), and indeed have zero to do with the filters festooned to the power amp…more to do with noise and signal loss of long unbalanced cables, something I've dealt with professionally, personally, and in my role as a Master Gardener and mechanical watch collector. My point about the preamp signal going directly to the the subs was also missed, as I noted that a REL high level signal uses the signal from the POWER AMP, and thus the tone of same. My Fire Bottle is not the "flea watt" version, it's the 12 watt per side HO version which is likely using a couple of its watts when I listen at normal levels and has plenty of headroom, unlike an amp with 3 or 4 watts total…big difference there with finesse and dynamics for days. Assuming my position without paying attention to what I actually say seems like a waste of time for you, but I get it…you hear what you want to hear. Also note that I DID test your Filterpalooza concept (you missed that? really?) and found it not up to my standards as an active audio professional with ears of pure gold (maybe more like pewter but hey…I'm old). Thanks anyway for sharing your joy of discovering biamping, and I'm sure there are people out there in foreign lands or Los Angeles who will line up to join you in the Flea Watt with Filters campaign for Dynamics and Headroom (FWFCDAH). Soldier on!
You know, I'm European, and for someone with such a Latin American last name, you are very derisive in your lousy comments. Get a life and get away from my posts!

Last edited by Musica Amantem; 09-22-2017 at 02:58 PM.
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  #4154  
Old 09-22-2017, 03:07 PM
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jdandy jdandy is offline
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Wgarcia.......

Musica Amantem.......


Guys, this is not AK, WBF, or some other forum where this tone is routinely tolerated. This is Audio Aficionado, the Friendly Forum for High-End Audio. I have been reading this back and forth barb throwing for a couple days now and it has reached the point where it needs to stop. This is not how our members demonstrate respect for differing opinions.

The ultimate control of content on this forum is in the hands of the forum administrators. I suggest you two agree to disagree if necessary and drop the masquerading digs, barbs, and personal attacks. I can do a thread cleanup much faster than you two can continue this sparing match, and I can carry it to a more restrictive level if push comes to shove. Kindly adjust the manner in which you are communicating on this forum. Consider this a one time friendly warning to both of you.
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Last edited by jdandy; 09-22-2017 at 03:16 PM.
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  #4155  
Old 09-22-2017, 04:10 PM
Musica Amantem Musica Amantem is offline
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You're absolutely right. Although I was not the one who started all this. I won't reply to this person anymore. Thanks for your patience.
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  #4156  
Old 09-22-2017, 04:38 PM
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Masterlu Masterlu is offline
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Quote:
Originally Posted by Musica Amantem View Post
You're absolutely right. Although I was not the one who started all this. I won't reply to this person anymore. Thanks for your patience.
Much appreciated!
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  #4157  
Old 09-25-2017, 10:50 PM
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Analog Addict Analog Addict is offline
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Back to your regularly scheduled program...

A blast from the past

Untitled by Analog Addict, on Flickr

Untitled by Analog Addict, on Flickr
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  #4158  
Old 09-26-2017, 10:19 AM
FloridaBoy FloridaBoy is offline
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Quote:
Originally Posted by BearCityUSA View Post
You all ever have your rectifier glow blue/purple for a split second when powering on? What is this? And is it a sign of a short active life left on the tube?
Yes, some tubes just do that. No worries.
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  #4159  
Old 09-26-2017, 10:22 AM
FloridaBoy FloridaBoy is offline
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Quote:
Originally Posted by jdandy View Post
Wgarcia.......

Musica Amantem.......


Guys, this is not AK, WBF, or some other forum where this tone is routinely tolerated. This is Audio Aficionado, the Friendly Forum for High-End Audio. I have been reading this back and forth barb throwing for a couple days now and it has reached the point where it needs to stop. This is not how our members demonstrate respect for differing opinions.

The ultimate control of content on this forum is in the hands of the forum administrators. I suggest you two agree to disagree if necessary and drop the masquerading digs, barbs, and personal attacks. I can do a thread cleanup much faster than you two can continue this sparing match, and I can carry it to a more restrictive level if push comes to shove. Kindly adjust the manner
in which you are communicating on this forum. Consider this a one time friendly warning to both of you.

This is message board and I can't 'hear' anything. Audio is an experimental hobby that can become a black hole. If your rig sounds good to you...it is good.
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  #4160  
Old 09-26-2017, 10:28 AM
FloridaBoy FloridaBoy is offline
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Quote:
Originally Posted by Bombadil View Post
Roscoe65, I ran some comparisons on my home equipment. I brought in a $200 power cord, a $500 one and a $1000 one. Compared them vs my Belden 14AWG shielded cable which I picked up for $8. Tried them on 4 power amps, two preamps, a DAC and a CD player. Couldn't hear any difference between any of them on any piece of gear.

But there are certainly people around who claim to hear significant differences and who have invested many thousands of dollars into them.

These Inspire SE amps throw up such a beautiful, open sound, that they would seem to be an amp which would benefit, if there actually is a difference.
A highly respected audio engineer, Dusty Vawter - who designed amps & DACs for Audio Alchemy, then more of the same for Channel Islands, and is now back with Audio Alchemy / Elac - once told me that if a power cord could make an audible difference on any of his gear then that would be proof that he hadn't done a good job designing the power supply. For he put extensive work into cleaning, regulating, and filtering the power in his systems.
I use old basic Harmonic Technology PC's on my Inspire gear. *I* like them. There are two things I am sure of about with wire. There are differences and high price does not equate to great sound.
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