GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: How to USE “Resonating Oops” in loudspeakers

Post Subject: Injection channel and Romy's rulesPosted by morespeakers2 on: 2/4/2013

The injection channel is the only thing about the Macondo that raises my eyebrow as a kind of "out there" concept and I have been meaning to ask about it for quite some time. I tried to brush up and read as much as I could just now on your experiences with it.

Now I really love "Romy the Cat's playback Rules" because I came to all the exact same conclusions independently of you and got really excited when I found that page as there is actually another human out there who really understands that some things should just be avoided in the interest of good sound and that there is at least one other person in the universe who came to the same conclusions I did after years of listening.

Some of the rules are very easily demonstrated such as why you should not use a ported box if you want the best sound. Sorry I don't have a great classical music example to suggest but I know the producer who recorded 1994 G-Love and Special Sauce album on Epic records. He told me they spent a week setting up the studio to record two track stereo direct to tape no mixing. Now the bass drum on the track #2 "Blues Music" is a highly reverberant sound with what sounds to be no deadening material of and kind in the drum. I takes just about one bass drum hit as the song begins on virtually any ported system to very effectively demonstrate why all ported boxes are second rate sound and this track shows just how bad they really are very easily as the same track played on a system not utilizing the back wave of the woofer usually has a chance to sound pretty good and very interesting at that.

Now I thought the injection channel was a passing phase and that you would eventually get rid of it but that does not seem to be the case. At one point I was planning to suggest an additional rule to you. In my experiences building many speaker systems for my self and others I have noticed the most focused results have come using only one driver element for each particular frequency range. If multiple drivers are used in one frequency range, I have found the sound always seemed to lack a little focus. This focus is not to be confused with what audio reviewers are always gushing about when describing the etched details of the current speaker under review but actual focus and clarity to the sound.

So not that your ego needs to be pumped up even more but it is fact whether you know it or not, you display a genius level intelligence in the area of speaker design pulling out concepts from thin air that not many if any seem to be doing. It does not even matter if I or anyone else likes the sound of the Macondo, you have demonstrated to me time and time again you are very aware of the things that matter to high quality sound. So I am listening very carefully on your thoughts and experience about this injection channel concept.

Anyway after you living with the injection channel for some time it seems that any lack of focus that I would guess the channel might bring, far outweighs the tone benefits or "decompression" it brings to the table. Now I am asking does this injection channel somehow actually somehow counter intuitively bring "focus" to the sound even though I and probably many other would have guessed it might muck things up causing a little confusion to sound?

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