This ^^^
It's possible that you might have connected one of the speakers out of phase, or perhaps one of the woofers out of phase if you...
Brian Steele
Seasoned Veteran
Last Activity: Today, 01:11 PM
Joined: 08-14-2007
Location: Grenada, West Indies
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Car doors don't make good enclosures for bass. However if the cutouts in the door are for 5.25" speakers, the ND140-4 looks like a decent match...Leave a comment:
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"Slot-loaded" is correct (i.e.commonly-used terminology for that type of layout), though it can be modeled as a 4th order bandpass alignment....Leave a comment:
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That looks like a front-loaded horn with the top panel missing. Is that how you got the boxes?Leave a comment:
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Look at the odd-order HD at various levels, as this will rise significantly with over-excursion. You should notice a definite "trend", which...Leave a comment:
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Unfortunately that bleeds away too much of the sensitivity, particularly around 900 Hz. I really think I'm going to be stuck with dealing with this via...Leave a comment:
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Here ya go... (remove the .txt - the forum s/w does not allow .dxo files to be uploaded). The FRD and ZMA files are included earlier in this thread....Leave a comment:
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Ok, assuming I got the layout correct (see attached images), that preserves the efficiency. The parts count is a bit worrying though. The low-pass section...Leave a comment:
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No need to cut out the beams - just build a shallow "adapter box" that bolts to the deck with an airtight seal all around, and then bolt the...Leave a comment:
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I don't think that particular driver, or its Infinity equivalent, is available anymore.
 ...Leave a comment:
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1 cu.ft. net enclosures can look pretty big once placed in a car's trunk. The picture for example is one of my "Boom Unit" placed in the back...Leave a comment:
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Which Bazooka subwoofer did you have? They range in size from 6.5" to 10" and come in both amplified and passive versions. Some of them are...Leave a comment:
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Let me know if I duplicated that woofer filter correctly in XSim (see attached images). It looks like it bleeds away almost 5dB of sensitivity, which...Leave a comment:
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Hmm, that does get rid of the hump, but introduces almost 2.5dB sensitivity loss from 1kHz up. I was trying to avoid that, Remember, everything from about...Leave a comment:
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That's quite possible. I really haven't done too much research into the cause.
Those Peerless drivers are interesting. How did you mount...Leave a comment:
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DATS Question...
Just a quickie - I wonder if the DATS software is going to be upgraded to derive the additional parameters required for the "semi-inductance"... -
Hi Pete, they were measured at their installed position in the car.Leave a comment:
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Ok, here are the FRD and ZMA files for the drivers in question (SF 6.5" and ND28F) measured in the installed location. The drivers are coaxially-mounted...Leave a comment:
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Crossover assistance....
I'm trying to get rid of the "bump" in the response just above 1kHz. Any ideas? ZMA and FRD files are available if required. The two drivers... -
Well, I was correct - Hornresp can't model this type of layout. At least not yet. In the equivalent Hornresp sim, the driver will have to be located at...Leave a comment:
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