jim-analog Posted July 15, 2005 Author Share Posted July 15, 2005 Greetings, Yes, I am using the ALK; current setting is 4,1; -7.4dB. That's close, but would like to have another setting between this and (I think) the next step which is -9 or so. You're absolutely right about the 12dB/oct! I was thinking of the l/f and confused the two. Thanks for getting my head straight. I'll probably order a set of the JBL drivers being discussed very soon. I'm also working on a new mid/high amplifier that will probaby max out at 4 watts or so; can't imagine damaging the drivers unless it hard clips (which it wont). A 76 driving a single 6A5G into a really cool "R" core transformer (I can post a link if anyone is interested). Mr Al K.............how are the tweeter transformer attenuators coming along? Please set aside a pair for me so I can move the Fostex to the mid horn. I haven't had a chance to run any sweeps yet, but it's on the plan when I can get a bit of time alone. Promise to post them as soon as I can get to it. Thanks again! Regards, Jim On 7/14/2005 3:36:50 PM DeanG wrote: Jim, aren't you using the ALK? If so, you are 12db/octave for the squawker, not 6db/octave. If you use the JBL with the ALK, and use taps X and 4 -- I think you'll be fine along as you don't get carried away. Which of course means that option is out of the question for me. Did you run those sweeps, and what did they reveal? What tap settings did find worked best with the Trachorn? ---------------- Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted July 15, 2005 Share Posted July 15, 2005 Jim, The circuit boards for the tweeter attenuators come in a few days ago. I think no I'm going to need more transformers! I think I can get two to you if I do a balancing act of sorts here! I'll let you know. Al K. Quote Link to comment Share on other sites More sharing options...
Hardhead Posted July 15, 2005 Share Posted July 15, 2005 Al-- Based on your conversation with Jim, I'm getting the idea that your transformer tweeter attenuator will work with the original ALK Type "A" crossover, is that correct? If so, where does it go, and specifically how would it be spliced into the tweeter circuit (which wires need to be cut, etc.)? Thanks. Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted July 16, 2005 Share Posted July 16, 2005 Hardhead, The transformer tweeter attenuator will work with any 8 Ohms tweeter regardless of the network. Kist disconnect the tweeter from the netwrok, hook it to the attenuator and run a cable from the input of the attenuator to the netwrok. That is, connect it just a syou could an "L-Pad". Al K. Quote Link to comment Share on other sites More sharing options...
Deang Posted July 16, 2005 Share Posted July 16, 2005 I've been playing with a constant impedance first order network I built. I didn't put any attenuation on the tweeter filter at all - just running it full out. While playing with the squawker settings I noticed that when the squawker isn't playing -- the tweeter really doesn't seem all that "loud". I don't think it needs any attenuation at all. I think what is really needed are some in-between settings for the squawker. With the K-55-M, 5 and 2 are just a wee bit too loud, and X and 4 are definitely too recessed, at least to my ears. I suspect 5 and 2 would be just about perfect with the K-55-V, but I can't get it dialed in with the K-55-M. I think the UT 3636 that Bob uses is the way to go here. Quote Link to comment Share on other sites More sharing options...
jim-analog Posted July 19, 2005 Author Share Posted July 19, 2005 Hi Dean, I agree that more fine, in-between settings would be nice. What is your source for the UTC 3636 autoformer? Regards, Jim ---------------- On 7/16/2005 10:56:45 AM DeanG wrote: I think what is really needed are some in-between settings for the squawker. With the K-55-M, 5 and 2 are just a wee bit too loud, and X and 4 are definitely too recessed, at least to my ears. I suspect 5 and 2 would be just about perfect with the K-55-V, but I can't get it dialed in with the K-55-M. I think the UT 3636 that Bob uses is the way to go here. ---------------- Quote Link to comment Share on other sites More sharing options...
Deang Posted July 19, 2005 Share Posted July 19, 2005 You can reach Bob here through the forum, whos moniker is BEC --or you can email him at bobcrites@centurytel.net The chart below shows you all the settings for both autoformers. In the "Combined" column, the values in italics are for the 3619. Quote Link to comment Share on other sites More sharing options...
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