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Search Forums: Posts Made By: DavidAnalog
Forum: Boats, Accessories & Tow Vehicles 07-21-2014, 4:54 PM
Replies: 9
Views: 1,390
Posted By DavidAnalog
MDF is porous. Edge to edge you can easily draw...

MDF is porous. Edge to edge you can easily draw air through it with 125 psi vacuum.
MDF construction uses water-based adhesives.
MDF is not much different from pressed paper. It even behaves and...
Forum: Boats, Accessories & Tow Vehicles 07-21-2014, 10:51 AM
Replies: 5
Views: 467
Posted By DavidAnalog
The less you talk about it the better chance you...

The less you talk about it the better chance you won't jinx the fix.
Forum: Boats, Accessories & Tow Vehicles 07-18-2014, 7:14 AM
Replies: 50
Views: 3,206
Posted By DavidAnalog
You've tried the Eclipse in your vehicle so as a...

You've tried the Eclipse in your vehicle so as a test try another set of subs in the boat.
Eclipse never engineered or made subs, they just contracted it out. I remember the old Phoenix Gold carbon...
Forum: Boats, Accessories & Tow Vehicles 07-18-2014, 6:49 AM
Replies: 50
Views: 3,206
Posted By DavidAnalog
Gross before woofer mass, not net. You are...

Gross before woofer mass, not net.

You are right and now that I see into the cavity behind the enclosure I'm no longer feeling the side-firing scheme. Hard not seeing it in person but I thinking...
Forum: Boats, Accessories & Tow Vehicles 07-17-2014, 7:26 PM
Replies: 50
Views: 3,206
Posted By DavidAnalog
Try this. Two isolated back to back 1.25 cu.ft....

Try this.
Two isolated back to back 1.25 cu.ft. gross enclosures. Not sharing an enclosure. All 0.75" stock. Two .75" X 2" baffle to back stiffeners in each enclosure and computed into the...
Forum: Boats, Accessories & Tow Vehicles 07-17-2014, 8:47 AM
Replies: 2
Views: 415
Posted By DavidAnalog
Nate, If the voice coils of both speakers are...

Nate,
If the voice coils of both speakers are burnt it is unlikely you have a manufacturer defect. And if it sounded good and clean in the beginning at a particular volume level the equipment is...
Forum: Boats, Accessories & Tow Vehicles 07-16-2014, 2:08 PM
Replies: 5
Views: 467
Posted By DavidAnalog
Maybe small magnetic strips.

Maybe small magnetic strips.
Forum: Boats, Accessories & Tow Vehicles 07-16-2014, 10:55 AM
Replies: 5
Views: 467
Posted By DavidAnalog
JL Audio's only infinite baffle subwoofer has a...

JL Audio's only infinite baffle subwoofer has a butyl rubber surround. And rubber is tougher to glue than foam. I would call JL Audio directly and see if they can recommend a glue that you can apply...
Forum: Boats, Accessories & Tow Vehicles 07-14-2014, 5:31 PM
Replies: 50
Views: 3,206
Posted By DavidAnalog
I assume that you have measured the DCR of all...

I assume that you have measured the DCR of all four voice coils independently and found all of them to be within a tight tolerance. I might also measure the DCR while slowly, gently and in a centered...
Forum: Video and Photography 07-11-2014, 5:44 PM
Replies: 1
Views: 617
Posted By DavidAnalog
Yes, that is way too much power for an 8-inch. ...

Yes, that is way too much power for an 8-inch.
Frankly I could run that woofer with a 1000 amplifier for a decade with no failure. But then I have absolutely no tolerance for distortion or...
Forum: Boats, Accessories & Tow Vehicles 07-09-2014, 10:47 AM
Replies: 21
Views: 1,469
Posted By DavidAnalog
When I wasn't paying attention it was easy to...

When I wasn't paying attention it was easy to creep up in the high 70s. So it doesn't have much trouble achieving and maintain that speed even with moderate changes in landscape. It does have an 80...
Forum: Boats, Accessories & Tow Vehicles 07-08-2014, 6:06 AM
Replies: 21
Views: 1,469
Posted By DavidAnalog
I have a 2014.5 Airstream Interstate EXT built on...

I have a 2014.5 Airstream Interstate EXT built on the Mercedes Sprinter platform. It's basically a hotel jumper that is agile enough to drive around town and find parking without difficulty. It will...
Forum: Boats, Accessories & Tow Vehicles 07-06-2014, 5:33 PM
Replies: 45
Views: 3,751
Posted By DavidAnalog
Actually, that may not be a problem since many...

Actually, that may not be a problem since many public address horns come with a multi-tap impedance matching transformer. I have no doubt that he is completely on top of the situation.
Forum: Boats, Accessories & Tow Vehicles 07-06-2014, 4:41 PM
Replies: 45
Views: 3,751
Posted By DavidAnalog
If that were true it would require a serious...

If that were true it would require a serious upgrade in my audio aptitude. I'm still struggling to grasp all that has been applied in that system. Waaaay over my head.
Forum: Boats, Accessories & Tow Vehicles 07-03-2014, 2:07 PM
Replies: 1
Views: 348
Posted By DavidAnalog
I think you have the right idea.

I think you have the right idea.
Forum: Boats, Accessories & Tow Vehicles 07-02-2014, 9:10 AM
Replies: 7
Views: 537
Posted By DavidAnalog
You are correct. I had a four-channel on my mind....

You are correct. I had a four-channel on my mind. I also meant to state the Syn4 and 2 combo.
Forum: Boats, Accessories & Tow Vehicles 07-02-2014, 6:12 AM
Replies: 7
Views: 537
Posted By DavidAnalog
HT-6? No. Not enough power, especially on the...

HT-6? No. Not enough power, especially on the non-bridged channels. The HT-4 and HT-2 combination would be great. Or, a Syn4 and Syn4 combo. It generally requires two amplifiers to run a 3-some at...
Forum: Boats, Accessories & Tow Vehicles 07-02-2014, 5:52 AM
Replies: 8
Views: 523
Posted By DavidAnalog
The JX is a great value amplifier with lots of...

The JX is a great value amplifier with lots of power (1000 watts) at a low cost. The 12.5 volt power numbers are especially impressive. Sophistication wise, it's more on par with competitors...
Forum: Boats, Accessories & Tow Vehicles 07-01-2014, 5:46 PM
Replies: 8
Views: 523
Posted By DavidAnalog
JL Audio has a Class D XD1000/1 that would be...

JL Audio has a Class D XD1000/1 that would be perfection for two 10W3s. Hopefully both are 4-ohm subs. If not then there are other ways to go.
Forum: Boats, Accessories & Tow Vehicles 07-01-2014, 5:42 PM
Replies: 8
Views: 523
Posted By DavidAnalog
You can't run three 4-ohm coaxials in parallel...

You can't run three 4-ohm coaxials in parallel but there is a configuration where two channels can drive six speakers with a fairly equitable distribution of power and run at a safe load. So in a...
Forum: Boats, Accessories & Tow Vehicles 07-01-2014, 3:47 PM
Replies: 8
Views: 523
Posted By DavidAnalog
At the smaller side you could look at the JL...

At the smaller side you could look at the JL Audio XD700/5 and at the higher side a JL Audio XD1000/5. Personally, in an open boat I like to see the subwoofer powered on the higher side.
Maximum...
Forum: Boats, Accessories & Tow Vehicles 06-29-2014, 8:18 PM
Replies: 11
Views: 1,247
Posted By DavidAnalog
Any degree of Bass Boost @ 45 Hz is an...

Any degree of Bass Boost @ 45 Hz is an unnecessary strain on the tower speaker and a total waste of precious power. Its nearly an octave below the crossover point and seriously below the speaker's...
Forum: Boats, Accessories & Tow Vehicles 06-29-2014, 7:48 PM
Replies: 11
Views: 1,247
Posted By DavidAnalog
45 Hz Bass Boost on the highpass amplifier?

45 Hz Bass Boost on the highpass amplifier?
Forum: Boats, Accessories & Tow Vehicles 06-29-2014, 6:18 AM
Replies: 11
Views: 1,247
Posted By DavidAnalog
Yeah, going from 300 to 400 watts is marginal in...

Yeah, going from 300 to 400 watts is marginal in that you are gaining only a little over 1 dB in output. However, you are going from 2-ohm power to 4-ohm power which leaves you with much more...
Forum: Boats, Accessories & Tow Vehicles 06-27-2014, 6:31 AM
Replies: 9
Views: 658
Posted By DavidAnalog
Obviously you have a certain extra sensitivity to...

Obviously you have a certain extra sensitivity to 'pain'.

Kidding aside, look at the flipside for some systems, not all. One amplifier driving a sub (bridged), two HLCD tower speakers (bridged),...
Showing results 1 to 25 of 200

 

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