Recent content by Robh3606
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Line Source Dipole Versus Point Source Cone: Which Soundstage Presentation is More Realistic?
Hello Duke and thanks It was an evolution over time. I tried several placements with no back wave attenuation and ended up with a position where I felt I had the best image. If I dropped them closer to the corners imaging would degrade but it was really hard to "hear" where the speakers where...- Robh3606
- Post #10
- Forum: Speaker Design
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Line Source Dipole Versus Point Source Cone: Which Soundstage Presentation is More Realistic?
Hello Duke I was using fiberglass batting or felt of different thickness's and combinations. I ended up with a square of fiberglass batting right behind the driver. Distance? From close about 2ft to about 4 ft measured from the backwall the driver toed in towards the corners. There is a rug...- Robh3606
- Post #7
- Forum: Speaker Design
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Line Source Dipole Versus Point Source Cone: Which Soundstage Presentation is More Realistic?
Interesting question. When I had my 2 way Heil set-up I experimented with level of the backside radiation pattern. No attenuation and it was a more immersive sound field with vague focus. If I attenuated the back wave completely I ended up with a more point source more focused presentation. I...- Robh3606
- Post #4
- Forum: Speaker Design
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Direct Coupled Drivers Vs Crossover
Watch out for the DCR values. You can read the current values off the inductors already installed. Especially the cored ones. Air cores will typically be higher unless you bump up the gage. Rob :)- Robh3606
- Post #53
- Forum: Speaker Design
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Direct Coupled Drivers Vs Crossover
Hello I have had good results using both passive and active? You are using lower power SET? What does the speaker impendence curve look like? Those are 15's in parallel no? Depending on the overall impendence level if it drops low and a high phase angle they could be a tuff load.' With...- Robh3606
- Post #5
- Forum: Speaker Design
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Hi-Fi is NOT a subjective hobby.
What?! The image completely collapses when out of phase. The indication is the total collapse of the central image. Why would you even use a stereo pair out of phase? Not only that but the bass response will be very anemic as well. Not sure what is going to happen higher up but the change in...- Robh3606
- Post #147
- Forum: General Audio Forum
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Hi-Fi is NOT a subjective hobby.
You don't use a set-up disk with a simple phase test to verify set-up? Why measure anything you can easily hear. Rob :)- Robh3606
- Post #144
- Forum: General Audio Forum
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Your "secondary" living room system
I have a small set-up in my Livingroom. Use it for TV, movies, streaming and plain stereo. Use it almost everyday. Performa F206's a subwoofer with "active" crossover in the preamp. DVD player handles movies and CD. Rob :)- Robh3606
- Post #7
- Forum: General Audio Forum
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Layering in a Second Speaker System With Narrow Bandpass?
Hello hopkins Well depends how much and where. Music power requirements are not linear so lets say you add +6dB at 50 hz. You would require 4 times the power. Do it on the other end you also add 4x the power but you use less in the upper octaves. It's always better to use cut only EQ if you...- Robh3606
- Post #14
- Forum: Speaker, Subwoofer And Headphone Audio Forum
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Layering in a Second Speaker System With Narrow Bandpass?
The scenario is hypothetical. Why would you do this? Why not just add EQ and add a slight boost in the 5-10K range. There is very little power there so a 5 db rise won't add a significant power increase in the driver. Your adding a crossover and an extra power amp so what would be the...- Robh3606
- Post #4
- Forum: Speaker, Subwoofer And Headphone Audio Forum
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What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
Hello So have I in similar demoes. They are really nice! I don't know if he has changed the cabinets design? Maybe he has? Was using K-145's with F/C magnets so different from the JBL 150C in the original also crossing them significantly higher @ 800Hz so I would suspect the latter version... -
What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
Do you understand how a corner horn works? The back isn't sealed. The original K used the rooms walls exclusively, the newer version is built similar the the Hart which always had side panels as part of the enclosure. WRT it being a corner horn? Read the catalog! Rob -
What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
You would place these like any other WRT frequency response below say 300-400Hz. Like any other direct radiator speaker, the woofer, they have no directivity control in that region. So in reality it's all about room speaker compatibility. They could work just fine. I have larger speakers and... -
What are the Top Horn Speakers in the World Today? Vox Olympian vs Avantgarde Trio vs ???
You didn't get it wrong. It is a corner horn. Built to compete with the Klipshorn, Just because it has side panels doesn't change that. JBL stopped manufacturing them in 1964 because of the success of stereo. Most people could not accommodate a pair with two unused corners. Rob :)... -
Why does my TV sound more real?
TV sound is typically tailored similar to a old phone line. There is no deep bass or highs it's all midrange. So of course certain aspects are going to be highlighted. Music lives in the midrange so sure it can sound good but sure as hell they are not accurate. I don't use my TV speakers at...- Robh3606
- Post #16
- Forum: General Audio Forum
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