New SQL system plans..Eclipse 8200 or 7200 off 1000 rms??

[5.0coug 10+ year member]

I finally got my new car (Supercharged 98 Buick Regal) and I'm putting toghether a sq/sql system for it and with my circuit city discount I get the 8200 for $120 or the 7200s for $80. I already have a Alpine 7873 (4 yrs of abuse, no sign of it), infinity ref 6.5comps in front (Soon to be replaced with kicker or polk comps) infinity ref 3way 6x9s in rear (good enough for rear fill). Powering the subs will be an xtant x1001 rated at 1000rms at 2 ohm and 1600 at 1. I'm ordering kicker hyperflex 0 gauge and 4 gauge kit tomorrow and for speaker amp(s) I'm looking at either a mtx te1004, kicker 650.4. I'm thinking either that or do 2 small 2-channels mounted on each side of the trunk pass thru for a clean install.

Back to the point, I know most non mainstream companies severly underrate their subs so anybody know how much rms the 8200 can take of clean power? It's rated at 670 so I'm hoping it can take close to 1000. I wouldn't mind 1 12" ported if the sub can take it. It's either that or a set of 7200s to hold me off until something really gets my attention (New mag, hdc3??)

Subs I've blown/had: 12" Memphis mojo, 15" L7, 2 12" L5s, 2 12" Type Rs (who hasn't?) 2 12" PO Mofo, 4 12" kenwoods and some more I can't remeber lol

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[squeak9798 5,000+ posts]

The Eclipse SW8200 is a single 4ohm subwoofer, so it'd only receive 500w RMS from that amplifier.

The SW8200 are great subs....but they would like power and they need large enclosures (on the order of ~4cuft sealed for a Qtc .707).

So take that into consideration.

 

[5.0coug 10+ year member]

Everybody else gets a kick out of it so this was my former car, believe it or not i drove without a rear end for over a month and 6k miles...Only got pulled over once.

 

[5.0coug 10+ year member]

If it needs 4cuft sealed how much would big would i need to get it ported? I for some reason thought eclipse subs like smaller enclosures.

 

[Kyle_Keating 10+ year member]

Ya, 1000 watts is a good number for that driver. 500 watts should be the minimum.

I recommend ~2 cubic feet sealed if you want a nice alignment, the Q is above 0.707 but that is OK because the it will get a boost where you want it.

also, don't try porting it, its not really intended for that.

 

[ultimate157 5,000+ posts]

I tried putting a single 8200 in a 4cu box, but it didn't like it too well. It bottomed out very quickly, and power handling went way down.

I would also recommend between 1.5 and 2 cubes. remember, as box size goes up, you don't need as much power to push it, so 500w would be good.

 

[squeak9798 5,000+ posts]

If it needs 4cuft sealed how much would big would i need to get it ported? I for some reason thought eclipse subs like smaller enclosures.

This particular sub needs larger enclosures. As was mentioned a full 4cuft isn't required...but it really does need larger-than-typical enclosures.

And also as was mentioned....this isn't really a ported enclosure sub.

 

[Kyle_Keating 10+ year member]

I tried putting a single 8200 in a 4cu box, but it didn't like it too well. It bottomed out very quickly, and power handling went way down.
I would also recommend between 1.5 and 2 cubes. remember, as box size goes up, you don't need as much power to push it, so 500w would be good.

^^^ high pass filter would have done some good there... power handling had nothing to do with the box, the lack of EQ is the real issue.

Sure, the driver's excursion is a function of the alignment which is directly related to the box, but that is not really power handling.

The driver works good in 2 cubes, anything larger and you actually lose SPL in the audible pass band while gaining SPL in the subsonic area... not so much important here.

 

[5.0coug 10+ year member]

ttt

 

[Kyle_Keating 10+ year member]

buddy.... 2 cubes sealed now get going with the build.

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[5.0coug 10+ year member]

Guess thats that then lol I'll be ordering Wed and will do a full build log with pics

 

[audioholic 5,000+ posts]

I think Id just turn the gains down abit before Id put a subsonic filter (hpf) on a sealed system.

 

[Kyle_Keating 10+ year member]

I think Id just turn the gains down abit before Id put a subsonic filter (hpf) on a sealed system.

I would sweep it at least to find your limit at a particular voltage and then you know for sure. It doest take much at voltage at 10Hz to bottom out anything and the SW8200’s don't offer much non linear protection from the spiders or BL so it’s sort of all or noting there...

 

[audioholic 5,000+ posts]

I would sweep it at least to find your limit at a particular voltage and then you know for sure. It doest take much at voltage at 10Hz to bottom out anything and the SW8200’s don't offer much non linear protection from the spiders or BL so it’s sort of all or noting there...

My point was, if he was bottoming out his system while listening to daily material (presumably), its not going to be a 10hz note. Therefore, Id rather simply cut the power to the sub abit than to truncate part of its already relatively small frequency response window. Why cut out individual freqs and lose some of the material, rather than simply cutting down on the input power, which is the real problem.
Vented systems many times require a ssf because they 'unload' so rapidly below tuning. Sealed systems do not suffer this dilemna, at all. Hence the need for a freq gate is moot.

 

[Kyle_Keating 10+ year member]

Gosh, sorry for arguing...