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Multi-Way Conventional loudspeakers with crossovers

135Hz Segmented Horn Midbass Build
135Hz Segmented Horn Midbass Build
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Old 28th July 2017, 04:28 PM   #81
pcgab is offline pcgab  United States
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135Hz Segmented Horn Midbass Build
Those are looking pretty awesome!
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Old 28th July 2017, 08:49 PM   #82
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by pcgab View Post
Those are looking pretty awesome!
Thanks! I appreciate you following along!
Javad
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Old 30th July 2017, 04:42 PM   #83
JShadzi is offline JShadzi  United States
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You know in Goonies at the end when the pirate ship sails out and the cop says "holy Mary...Mother of God!"...?

Well that's sort of how firing these things up for the first time was like!

First some finishing details.

Rat Rod passive XO, low pass around 125hz

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Mounting the drivers

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Dual opposed configuration

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XO installed and split to top section

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Aaaand, wala

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Did some quick XO tweaking and ended up with this, bass is about 3-5db down and I'm going to try Biamping to even that out before resorting to active.

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Initial impressions...WOW, this is the type of speaker that gives you a physiological response to music, I find my heart rate and pulse raising listening to my reference music. Bass is prodigious, like shake your hair and other body parts powerful, SPL is effortless, I hit 50% volume on my Adcom preamp and it sounded like the house was rattling from the inside out, volumes easily 115db+ at 1-meter, and that's on less than 300 watts or so per channel (Adcom GFA-555).

Fun stuff! Will keep playing with them!

Thanks,
Javad
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Old 31st July 2017, 05:50 AM   #84
manninen is offline manninen  Finland
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if you have all the active channels try to set it up as cardioid bass, that would be fun to hear
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Old 31st July 2017, 08:07 PM   #85
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by manninen View Post
if you have all the active channels try to set it up as cardioid bass, that would be fun to hear
For now I'm staying passive for simplicity sake but yes, that would be fun to try on active, and I have everything to easily do it, will keep you posted!
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Old 1st August 2017, 03:26 AM   #86
JShadzi is offline JShadzi  United States
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I did some more XO tweaking and they are sounding very good, I also was able to bring the bass up to the level of the midbass horn.this is a blended sweep gated to 5ms

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Close up on the bass FR, comparison with both ports open and one plugged, actually quite close to the models if you consider room resonances

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I demoed them for some friends last night, Tricycle Film and the BB's track 1 almost resulted in a few cardiac arrests with the incredible dynamic range of that album =)

Javad
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Old 5th August 2017, 10:23 PM   #87
JShadzi is offline JShadzi  United States
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One last touch on these, I wanted to do some nice speaker wires that always stay with this set.

I started with 6 strands of 18g cooper wire. We were all out of unicorn dust silver wire at 034Motorsport so this had to do.

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I twisted the 3 wires together as positives and negatives then twisted those together. The fun part was passing all that through some 1/2" clear shrink tuning, I should have used 3/4" but I wanted it to be tight.

Some ends have banana plugs and others have spade connections.

These are the main wires that go to the sub XO input

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I cleared over the bodies to insulate them

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Then the wires out of the XO into each sub and up to the midbass XO

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And installed

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Horn L pad finalized, this configuration allows quick and easy swapping out of resistors to adjust the L pad w/o any soldering.

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Thanks!
Javad
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Old 12th August 2017, 03:35 PM   #88
JShadzi is offline JShadzi  United States
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Here's a video of them playing some Diana Krall, with detail shots as well

Seos24, 135HZ Horn and Quad 18" Subwoofers Diana Krall - YouTube
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Old 12th August 2017, 03:53 PM   #89
JShadzi is offline JShadzi  United States
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And a couple more pics

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Old 14th August 2017, 06:28 AM   #90
hajj is offline hajj  Lebanon
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Biggest headphone set ever!!
These look seriously nice!
I'm sure you have probably mentioned this before, but what's the driver compliment?

Btw, twisting your cables this way might add some capacitance to the cables
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