Review db drive wdx6moto-g2 - Road Glide Forums
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post #1 of 6 (permalink) Old 05-23-2019, 10:19 AM Thread Starter
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Review db drive wdx6moto-g2

I posted this up on the "other" forum, so figured I'd do some copy and paste for the Road Glide crowd. Following is my mostly unbiased review of the new WDX6MOTO-G2 coax speakers from DB DRIVE.

I had some spare time last night so I pulled the fairing off the 2018 Road Glide, cut a clearance hole in the pod, installed 1 of the Moto Gen2s and covered the clearance hole with Dynamat. I left a Hertz MPX 165.3 in the other pod so that I could do some sort of subjective sound and volume test. Here are my observations;

Rescueninja Compared to the Hertz, the Gen2s are very bright speakers - glad that I didn't jump on the Gen1 bandwagon back in the day, because I've read here that Gen1 brightness grade 10, Gen2 brightness grade 6.5. So DB apparently did tone it down, but it is still very bright compared to the Mille Pros.

Rescueninja The Gen2s paired with a bright AMP or improperly tuned could scream high frequencies at the volume levels you'd likely be listening to cruising down the slab.

For everyone else wondering........................... (all tests performed with bike in accessory mode, then repeated with bike running to account for Rushmore .bin file)

Sound quality in the garage winner Hertz MPX 165.3 - really not close. The MPX 165.3 have excellent SQ, the highs are balanced, vocals clear, bass down to around 100 Mhz is punchy and distortion free at volume levels needed for highway riding.
Drop in fit for Rushmore Road Glides winner Hertz MPX 165.3 - no pod mods required.
Overall manufacturing quality perception winner Hertz MPX 165.3 - just put the two speakers side by side, take a look at the baskets, solder joints, design, woofer cones surrounds etc. and the Hertz yells "quality". Of course this is very subjective on my part.
Sensitivity winner DB Moto Gen2 - DBs stated sensitivity spec. on these is 103.5dB and I wouldn't doubt that it is pretty honest. At the same radio volume and the same AMP gain setting the DB Motos are definitely louder than the MPX 165.3.
Weather resistance winner DB Moto Gen2 - here I'll go off what I know about the construction of the two speakers. The MPX 165.3 woofer cones are manufactured from pressed pulp and cotton fibers. No claim of weather resistance. I don't know what the DB cones are manufactured from, but DB does state that the cones are treated for weather resistance. I have heard a couple of people tell me first or second hand knowledge of MPX 165.3 that were ruined by rain and/or humidity.
Overall volume winner DB Moto Gen2 - if SQ isn't the most important speaker characteristic on sled audio (and fess up, riding down the slab a lot of that SQ can get washed away - especially on a Road Glide) the DB Moto Gen2 takes the crown here. They are loud........

Other thoughts; in this day and age I'm still amazed that speaker manufacturers use that tiny thin spade for the negative connection to the speaker. Further complicating that is that they are usually soldered to some sort of pressed composite mounting board that is entirely too flexible when trying to securely attach a female plug to the post. DB - guilty as charged here.

The difference in the sound of mid-bass between the two comparison speakers is pretty profound. It's hard to explain and I messed with the frequency settings quite a bit trying to get both speakers sounding close to the same in those lower frequency ranges. The sound is just different. I can't say better or worse, just different. I'll have to get some seat time in to determine which I prefer at riding speeds.

Since I've already hacked one of my pods, at this point I'm pretty much "all in". I'll go ahead and modify the remaining pod and install the other Moto Gen2, re-adjust the gains and tweak the HP filter on the AMP. I've got a road trip coming up in a few weeks that will give me a few hours of seat time with the Moto Gen2 speakers and I'll come back with additional thoughts, comments.
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Last edited by wevsspot; 05-28-2019 at 09:08 AM.
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post #2 of 6 (permalink) Old 05-23-2019, 10:29 AM
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Good read, thanks for the write up. Seems pretty consistent with what others across the street said.


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post #3 of 6 (permalink) Old 05-23-2019, 10:50 AM
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Nice detailed review. Thanks for posting!


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post #4 of 6 (permalink) Old 05-25-2019, 04:25 PM
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Thanks for the review. Money, time, and had to hack on the pods, props!

Ive always had a uneasy feeling about those DB speakers for some reason. Only thing I know of was the guy pushing them on the other site. Seemed strange to me.

True test will be the road trip. You might be able to run the volume lower and not tax the amp as much at highway speed, which is a good thing. Or it might be so bright they will give you a headache, that's what the Kappas did to me.

Here is the question though. If the DBs get the boot, what goes in next since you already have made room in the pods???

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post #5 of 6 (permalink) Old 05-28-2019, 09:35 AM Thread Starter
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Quote:
Originally Posted by phillyfan1 View Post
Thanks for the review. Money, time, and had to hack on the pods, props!

Ive always had a uneasy feeling about those DB speakers for some reason. Only thing I know of was the guy pushing them on the other site. Seemed strange to me. True test will be the road trip. You might be able to run the volume lower and not tax the amp as much at highway speed, which is a good thing. Or it might be so bright they will give you a headache, that's what the Kappas did to me.

Here is the question though. If the DBs get the boot, what goes in next since you already have made room in the pods???
@phillyfan1 - I had about four hours of road time with the DBs this weekend. Knowing that I was going to get a decent ride in with them on Saturday, Friday afternoon I pulled my fairing and did some additional tweaking. Thinks I changed;

Reduced gain to output no more than 200W per channel to each speaker. It was previously hovering around 230W per channel. The DBs are rated at 175W RMS with a claimed peak RMS capacity of 400W. There is no way the DBs could handle that peak unless they were crossed at 500Hz.................... Reducing the gain and increasing the crossover frequency using the HP filter on the AMP yielded acceptable improvements (in my very subjective opinion). So here's my power and frequency journey;

Start: 230W at 90Hz - early distortion onset, especially playing Staind "Falling" and DJ Snake & Lil John Turn Down for what

Next attempt 225W at 100Hz - Turn Down for What cleaned up, but Falling was still failing

Last attempt 200W at 120Hz - All sources and tracks sound pretty good at highway volume. Mostly loud enough for my entire library from the real old stuff, to the newest stuff. I verified best I could the frequency setting using various test tones, music, ears, my o-scope and the RTA app on my phone. As you know, without a lot of professional gear, knowing the exact crossover points that you've set your AMP to isn't real scientific. On the DA Micro4v2, 120Hz seems to correspond to the 2PM position on the frequency pot.

In the end it's been a bit of a trade off. Higher volume than the Hertz, but you're trading SQ and frequency range. The Hertz could easily play at the same power level down to 90Hz or so, but of course the Hertz aren't as loud.

For frequency analysis this is what my ears tell me;

Putting head unit at 1/4 volume;

1 Khz (we'll call this the baseline) = full volume
120 Mhz sounds about 80% as loud as 1 Khz
110 Mhz sounds about 60% as loud as 1 Khz
100 Mhz sounds about 40% as loud as 1 Khz
80 Mhz sounds about 20% as loud as 1 Khz
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post #6 of 6 (permalink) Old 05-28-2019, 09:46 AM Thread Starter
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Originally Posted by phillyfan1 View Post
Here is the question though. If the DBs get the boot, what goes in next since you already have made room in the pods???
Since it's a play on my real name I won't feel bad using a slightly derogatory term here.......... Cutting pods for magnet clearance isn't much above "Jerry rigging" IMHO considering that I'm a perfectionist. Yes, it gives me more room to "play" with different speakers, but at the cost of a lot more time, labor and at the expense of making me feel like I've hacked something up to make it work. The DBs aren't necessarily bad, but I don't consider them to be great either. Guess the Hertz spoiled me. Of course the DBs come in at almost $100 less expensive than the Hertz (if you're buying the Hertz from an authorized dealer), so there's something to be said for the dollar value. If you were going from stock Rushmore Road Glide audio to a decent AMP and the DB drive speakers, you would be blown away. But they aren't a great speaker to compare to if you've already ran some really good speakers.

As for where I'd go from here;

I might buy two new speaker pods and put the Hertz MPX speakers back in
I've also considered selling both the MPX 165.3 and the DB Drive Gen2s and putting that money towards some Hertz components (MLK 1650.3)
Or just leaving everything the way it is (maybe a little bit more tuning / tweaking) and seeing if the DBs grow on me

I know best bang for buck would be a set of lowers with two more speakers down there, but I've got huge feet and really don't want to give up any more foot/leg room just to accommodate a couple more speakers. Bag lids are out of the question, as I need every bit of storage space I can swing when my and my better half travel. So I'm pretty much stuck with the best I can get by with in the fairing.
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