FOCAL POLYGLASS 33V1 SUBWOOFER 13" 800W


specs.

Focal Polyglass 33V1 800 Watt Max (400Watt Nominal) 13" High Power Subwoofer.

* For sealed enclosures from 25 to 40 liters (0.88 to 1.42 cubic feet)
* Sensitivity 92 dB
* Freq Response 37Hz-500Hz
* 2 9/16" 4 Layer Voice Coil with Aluminum Former
* Impedence 4 Ohms
* Zamak Chassis

for 190.00






Also 13'' is just different.

Going with Front Focals, so with that in mind was thing why not rear too.

What would be a good mono sub for this too? Thanks..................

 

Whats the xmax? If its over 20mm one way, I'd say its a good buy.

 

Is that like having a volume **** that goes to 11?

 

LOL, good one

 

"X Macks da spawt"

 

Found it.

7.5mm of xmax. That's pretty sad, honestly.

while I think the sub will sound fantastic, I think you will be disappointed with its volume and ability to hit the really low notes with authority.

Also, the cone is 11.2"


I'd go with the Image Dynamics ID12 for $150 from woofersetc.

It has 17mm one way xmax. The cone is 11.0"

 

Kale, don't want hijack my own thread but what's up with those bunny ears on your icon. Makes me smile every time I take a look at them.


I have no Idea what xmax means? I'm sure you do. I Need to do some more reading, for sure....

ok, Image Dynamics ID12 , Nice price... I will check them out...

what type of amp will pair up with this sub ?

 

It was my easter avatar, and it just stuck.


The downside i see to the ID sub is the large enclosure requirement, so I'd keep that one in mind but still spend more time deciding.


Xmax is how much the speaker moves. The more it moves, the more air it displaces. The more it displaces, the louder it gets.

An amp that makes about 300-500 watts would be good. You can get it dual 4 ohm or dual 2 ohm.

dual 4 means it can be 8 or 2,
dual 2 means 1 or 4



This sub also looks good for $125: http://www.edesignaudio.com/edv2/pro...products_id=31

Not as nice as the ID, but is happier with smaller enclosures. I've heard mixed reviews on ED products, though.


This one gets a lot of nods on a lot of forums:
http://www.tcsounds.com/tc1000.htm

Of all the above, I only have personal experience with Image Dynamics stuff. I have 4 of their subs, and love every one of them.

 

Good Info. There....

Thanks for pointing me in the right direction

 

ty looking at Boston too. Did not know there was a Boston Sub. Looking at them on Crutchfield.





.

 

I like this one but it's too deep.. rrrrrr 8.25

http://www.tcsounds.com/tc2000.htm#dim


has big xmax

 

I have 2 Focal 8" subs in my car, and if you have the crossovers set right, they are beautiful. I don't find them lacking at all.

 

That sub with 800-1000 watts would be pretty insane.

 

I prefer the IDQ line .. slightly better sound quality IMO and very shallow mounting depth coupled with small enclosure requirements. I run one in my vette now on about 280w RMS in a custom stealth enclosure and it works well, blends nicely with the front stage and can hit decently when asked .. but it is not brain jiggling bass by any means.

Check out image dynamics on ebay .. occasionally have nicely spec'd drivers for cheap.

Fej

 

Xmax isn't a determiner of quality for a sub driver. There are different methods of measuring xmax just like different methods for measuring amplifier power, and less reputable companies will use the greater number even though it can be deceiving. If all you care about is how loud the sub gets, then you have to factor in impedance, power handling, power compression, sensitivity, and other specifications. A sub with a 16mm xmax is pointless if its sensitivity is only 84 dB. It's simple math.

This Focal driver is a well-built sub fitting specific performance requirements. If your goal is loud and unrefined, look elsewhere. If clean well-defined bass is a goal, this is a good driver.

 

from the looks of it, i'd say it's a good entry lve sub that will give you excellent low end fill but if you're looking for bump, you'll want more. Resembles my old alpines (SWS 1222D)

 

"Is this a good sub" isn't really the question. It could be an excellent sub and still not give you what you're looking for. Gotta define what you're looking for - tight bass fill or BOOM BOOM BOOM. Depends on what you listen to and how you like to listen.

 

It's definitely not a standardized measurement, but it's safe to say that one rated for significantly more, will be louder. Especially if from a reputable company.

You know better than I do, I'm sure, about the accuracy of audio equipment measurements... even when comparing two items from one manufacturer.

 

No, it's not.

Xmax has more to do with power handling than anything. dB are still dB. You rarely see highly efficient drivers with high xmax. Conversely, high xmax drivers generally have less efficiency.

(Very basic math, and neglecting cabin gain which will be equal for both)

Start with sensitivity and (ideally) add 3 dB for each doubling of power, up to it's rating (assuming that's measured fairly):

Example... a driver rated at 92 dB that maxes at 250 watts will ideally get to 116 dB. This has exactly nothing to do with xmax.

Example... a driver rated at 87 dB that maxes to 1000 watts will ideally get to 117 dB. This, again, has nothing to do with xmax.

So is it reasonable to use a less efficient driver to get a higher xmax that you can only realize with a much bigger amplifier? Depends on your goals if 1 dB matters.

These examples don't account for power compression. The BEST subs suffer 3-4 dB at their maximum sound outputs. That means that 1000 watt sub above will only get to 114 dB. The more efficient sub above will suffer 2-3 dB because the of the smaller amount of power getting dumped into it, generating less heat resulting in less compression.

 

Sadly, the manufacturer's rated sensitivity numbers are far from perfect, too. It is an excellent point, though.


Though that one doesn't suffer from the whole max/rms one way/two way issue in ratings.]

What would you suggest to look for in a subwoofer?