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    Build idea: HLA4895 + Direct Radiating Subs

    Contemplating a new build. I miss my horn setup I had a number of years ago. I have been looking at some options and stumbled on the HLA4895.

    The HLA4895 is a three-way setup consisting of the...
  2. Awesome. Quite impressed with your horn build. I...

    Awesome. Quite impressed with your horn build. I would love build a pair of these for my 2445s (and also upgrade the Ti -> Be one day!)

    Are you using the Hypex amps? ETA: sorry I see you are using...
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    Outdoor measurements of 2445 and horn

    73102
    I took the 2445 and 250 Hz horn outside and did a gated measurement to get a better sense of the frequency response without the impact of my room. I also put together a "Quasi-Optimal"...
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    Thank you, pos et al. I am going to try and bring...

    Thank you, pos et al. I am going to try and bring my 2445 and horn outside this weekend and capture a gated outdoor measurement. That will be a good starting point. Is there a good tool you know of...
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    New woofer amp.

    73045
    Found this guy locally on craigslist today. Good shape and was able to get it for a really good price. Should hold me off for a while. Listen to Random Access Memories right now and it is...
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    Yes, I plan on rebuilding this with the correct...

    Yes, I plan on rebuilding this with the correct components. This was what I had on-hand to test out. I'll build the correct network next.



    I can't bridge them -- I believe there is something...
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    2405 Crossover

    73032
    I put my 12 dB/octave crossover back on my 2405 this evening. This is a .3 mH inductor and 1.5 uF cap. These are both running on the 300B amps now.

    What do you think about a Crown D150A...
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    I do believe they are:...

    I do believe they are:
    http://reconingspeakers.com/product/bex4016-truextent-beryllium-diaphragm-16-ohm-copy/
    $650/each though. Ouch.
    ...
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    Thank you, grumpy for the information on the...

    Thank you, grumpy for the information on the tapped inductor. Yes, not going to deal with all that. The l-pad will work. I did noticed that there is a 20 ohm resistor in parallel with the 2405 in...
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    Network Schematics

    I did find all of the network schematics here. And also learned something that I want to verify:
    1) There really is only one version of the 2405, and it's not really 8 or 16 ohms, it is more like...
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    2405 Crossover Design

    72998

    I found the 4343 reference thread and also this thread on 2405 crossovers. Above the resulting design.

    On the 4343, there is an additional 10 ohm resistor parallel to the terminals. And...
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    Hi berga12 2226 -> Thank you for the detailed...

    Hi berga12

    2226 -> Thank you for the detailed response here. This is quite helpful. Good idea on a bigger amp for the 2226. I think my tuning ends up coming up at 40 Hz (both modeled and also...
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    Lee in Montreal

    BTW -- I am using Lee in Montreal's suggestions for Bass EQ on the 2226s. It sounds great:

    "Basically, you will need two filters on the woofers. Try the following and adjust to your own tastes....
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    :) They are nice. 250 Hz Tractrix from StereoLab

    :) They are nice. 250 Hz Tractrix from StereoLab
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    Do you have a thread about your build? I'd be...

    Do you have a thread about your build? I'd be interested in seeing what you have developed. I'm glad the protections network diagram helps.

    Here was the thread I found the crossover idea on:...
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    More details about the protection crossover

    Here is an annotated picture of my protection crossover. The 2445 is 1.5 octaves below my crossover frequency. The 2405 is 2 octaves below. Both caps are bypassed and there is a 47 Ohm resistor...
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    Thanks! I'm sure your random stack is nice too!...

    Thanks! I'm sure your random stack is nice too! Interesting thought on the 2123s. Mid-coupler might help the crossover between the 15" and the horn for sure. I could put it in a nice, damped sealed...
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    JBL 2226J 2445J 2405 active DSP crossover help

    I've posted about this design before, but am looking for help as I continue to refine the sound and design a crossover topology that best takes advantage of the components in the system that I've...
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    Yea, I messed around with Wood stands and...

    Yea, I messed around with Wood stands and what-not for a year. Just buy Lee's. They are awesome. The nicest part of my system.65492
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    Protection circuit

    I built my protection circuit for my 2405s and 2445s. Basically I have a 6dB/octave HPF with a bypass cap and a 47 ohm damping resistor wired in parallel with the driver. I can't hear it -- which I...
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    More progress...

    65401

    Found this nice stand at my local ReStore. Much better and cleaner looking than the two end tables. Better cable management, too and I can get to everything to make changes/adjustments.
    ...
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    Progress

    65391

    My USB to S/PDIF convertor arrived today. Now I am going from my Mac Pro to the MiniDSP via USB and into the S/PDIF input. Very nice unit. The interface was a CM6631 USB DAC to Coaxial. $50...
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    I will definitely investigate adding a USB-S/PDIF...

    I will definitely investigate adding a USB-S/PDIF interface. Right now the optical out of the MacPro is convenient. Any suggestions?
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    Thanks @rusty jefferson -- re: the D/A issue, I...

    Thanks @rusty jefferson -- re: the D/A issue, I have switched the Xilica out for a MiniDSP 4x10 HD, which lets me go directly from my MacPro via Toslink optical, so no extra D/As.

    Interesting...
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    What are your thoughts about using the Crown D-45...

    What are your thoughts about using the Crown D-45 vs. something like a low-powered SET to power the rings? Something like this: http://www.decware.com/newsite/SE84CKC.html

    Obviously, there is a...
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