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Read the Post in new Window Read the Post in Threaded view  Post #25: Motivation by a Black Hole by IronManIV on 2025-07-30 
Browse the content of the threads in new Window  Thread: The Color of Bass in Playback Listening  24 Replies 
I am very glad to read about black bass. I have been so obsessed with mid bass lately and putting off the idea of ULF channel, even questioning do I need ultra low bass, and with few inspirations, maybe starting to embracing a lower hurdle. Now I wan...

Read the Post in new Window Read the Post in Threaded view  Post #203: Coaxial tweeter, Super? by IronManIV on 2025-07-02 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  203 Replies 
Oh, yeah, I thought I had correctly compartmentalized the coax tweeter from the Red as a separate discussion from the Injection Channel, but it's been like a pebble in my shoe, and now I'm not sure that maybe you're right, that's the final result, an...

Read the Post in new Window Read the Post in Threaded view  Post #201: Hunting like a cat by IronManIV on 2025-07-01 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  203 Replies 
Fair enough, but I don’t know when I would have a base system so successful that I’ll have the opportunity to try an Injection Channel as a secondary wideband source or as a source of “oops” tone or color, so really my thinking is to attempt to under...

Read the Post in new Window Read the Post in Threaded view  Post #199: Tone and colored devices, or secondary acoustic source? by IronManIV on 2025-07-01 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  203 Replies 
Paul, you would know this very well since you contributed to this thread from the beginning, but I think focusing on the coloration of individual devices is putting the emphasis in the wrong place, and I think Amir is onto something. When you say "dr...

Read the Post in new Window Read the Post in Threaded view  Post #188: Generalized vs. System Specific Color by IronManIV on 2025-06-26 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  203 Replies 
Understood. I had noticed that the injection channel experiment was challenging to describe subjectively in a way that avoided specific solutions for general effect. For example ideas to use piano wood for cabinets as "injection" in context of the or...

Read the Post in new Window Read the Post in Threaded view  Post #186: Another Injection Driver by IronManIV on 2025-06-25 
Browse the content of the threads in new Window  Thread: How to USE “Resonating Oops” in loudspeakers in Horn-Loaded Speakers  203 Replies 
As another option to try an injection channel I am thinking the vintage RCA SL12 might work. I don’t know if it has any syrupy quality, but I think it does have nice tone and is full range. It can do the 125 to 10k. These are hard to find but many of...

Read the Post in new Window Read the Post in Threaded view  Post #20: Alternative History Fiction by IronManIV on 2025-06-15 
Browse the content of the threads in new Window  Thread: Bill Gaw: over 50 years of high-end audio experience and tim... in Horn-Loaded Speakers  69 Replies 
Can we imagine what Hilliard, Lansing, Olson, Thuras and Wente would have done if we had offered them a technology that could time align the amplified signals for the Shearer horn? What transducer and horn topology might they have built or kept in pr...

Read the Post in new Window Read the Post in Threaded view  Post #18: Paper Diaphragm by IronManIV on 2025-06-03 
Browse the content of the threads in new Window  Thread: Bill Gaw: over 50 years of high-end audio experience and tim... in Horn-Loaded Speakers  69 Replies 
The seller on EBay is voice_of_steppe. Current paper diaphragm production is very nice with three different voice coil wire options and any impedance. But, I also saw the paper die stamps for sale. I am afraid these may not be available for long. I b...

Read the Post in new Window Read the Post in Threaded view  Post #5: 604E and Paper Diaphragms by IronManIV on 2025-04-09 
Browse the content of the threads in new Window  Thread: 50/40 Altec 604 Duplex Boxes in Horn-Loaded Speakers  4 Replies 
Thank you for this motivation about the 604E and your experience with the bass in a big box. I am an idiot, so I have read Neville’s work on vented bass several times and I am still wondering whether I really understand it. At first glance I think th...
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