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In the Forum: Horn-Loaded Speakers
In the Thread: A Frankenstein Macondo - Injection channel - trying it as open baffle.
Post Subject: You are all over the map.Posted by Romy the Cat on: 7/3/2013
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 Rewind wrote:
I kind of got stuck in selecting an upper midrange driver, above 2kHz. If a driver is going to screech in your ears it is going to be in these frequencies. I was never really satisfied with the range of 1" compression drivers I tried. That is what drove me to AMT. But that is not a final solution. They are probably very similar to ESS Heil, and you wrote how they made everything just sound like Heil, if I remember correct. I will contiue trying out new drivers and see if someone got it right. I have high hopes for the JA6881B. Will start working on them this weekend. I wonder what I could pair the Goto  S150 horn with if they turn out to sound good down to, say 350Hz. The Avantgarde Midbass horn would only get 150-350Hz. The horn I would need would probably not fit inside. I will end up with the same problem the Avantgarde Duo has. But, yeah, I will post later when I am finished.
 I am sorry but you are not selecting an upper midrange driver but instead you do I have no idea what. Instead to focusing on the problem on your hand you go all over the map with all kind of aimless activity. Reading too much audio sites, aren’t you?
 
What I am trying to say if that you need to employ this following rule:
 
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=432
 
stop, to look anywhere  and anything else and address the problem that you have in your hand. Any driver in any horn might made to sound “not harsh” and before experimenting with other drivers you need to learn how to make a driver in hand to sound properly. Generally by rolling the top of a driver you shall get rid of the harshness but it will address the symptoms only not the reasons. To find the reasons of the harshness is a bit more complex and it requires some discipline. You need to get rid of any crap and any fantasies you build around your installation and leave ONLY Midbass horn and MF horn. Time-align them and make then together to sound appropriately. The 4” Midbass horn with Studio 8Mwould NOT only get up to 350Hz but it will run all the way up 4-5K, in your case cut it somewhere around 600-1000Hz and you will be fine. Do not do anything else with system until you Midbass and MF produce proper sound. After you get this state then you might build you anything further.
 
Trust me, all your comments about Beyma, JA6881B, Radian Goto, JBL, injection, what you like, what you do not like and anything else are kind of irrelevant as  until you get a proper operational bone (Midbass + MF) of your installation you clearly have no understanding of what you are doing.  Building a playback is not about “doing” irrelevant things as it frequently practice by many audio DIYers but rather about proper methodological sequencing, thinking and feeling.

The Cat
 

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