What size box should I get / build: Sealed ft3: 0.70? IDQ10V3.D4

[MediumTech 10+ year member]

Original post noted below: Questions have been answered, Thanks: Edited 1/8/12

If these are the specs for this subwoofer (IDQ10V3.D4), and if I want to use a sealed box, do I simply get a Sealed ft3: 0.70? Which I understand would be a sealed box with .70 cubic feet of inside space?

Do I subtract the volume of the woofer while mounted in the box?

The speaker specs give: Sealed Enclosure Range: .55cu.ft. - 1.1cu.ft

Do I vary my choice of box size to "tune" resonant frequency?

I'm planning to be box shopping for this sub over the next few days.

IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

Sealed Enclosure Range: .55cu.ft. - 1.1cu.ft

Fs- Resonant Frequency: 22.23 Hz

Vas- Equivalent volume: 3.10cuft (88 liters)

Xmax- One way linear: 19.0mm

Sd- Cone Area: 399.1 cm2

Splo- Sensitivity: 85dB

Power: 50-500W RMS

XMax: 17.0mm

Sealed ft3: 0.70

Ported ft3: 1.00

WoofersEtc.com - IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

Click to read more...

 

[bhsaudio 10+ year member]

I would go alil bigger then .7cf after sub displacement you are actually looking at under .6cf prob even more not sure of the space the woofer takes up.

 

[MediumTech 10+ year member]

I would go alil bigger then .7cf after sub displacement you are actually looking at under .6cf prob even more not sure of the space the woofer takes up.

Thanks

 

[DoesDad 10+ year member]

Why sealed? Not an insult. Just curious as to why people go sealed versus ported. Is it a SQ thing?

 

[duanebro 10+ year member]

Sealed gives a flatter frequency response in car. It also has much better group delay.

Ported is much louder in most cases, this is why so many people go ported.

 

[Phoenix Risen 10+ year member]

and considering its an id q which is one very nice sounding sub. that sq is the end goal in mind.

 

[pro-rabbit 5,000+ posts]

Sealed gives a flatter frequency response in car. It also has much better group delay. Ported is much louder in most cases, this is why so many people go ported.

A properly designed ported enclosure can achieve the same response curve and in many times a better one then sealed. Especially when discussing the horrible acoustics of a car.

However, the application and product will dictate the enclosure.

 

[pro-rabbit 5,000+ posts]

and considering its an id q which is one very nice sounding sub. that sq is the end goal in mind.

Just to clarify, that does not mean a sealed enclosure is best for the application or for SQ.

Not suggesting for this case it is not a better choice, just saying that this is not a cut/dry topic.

 

[MediumTech 10+ year member]

Yep, what they said.

I'm after accuracy and a flat frequency response.

I'm figuring 600watts from the PowerBass Autosound ASA 600.1, will give me more volume than I've dreamed of.

The best subwoofer setup I've ever had is a 12year old Image Dynamics, in a slightly undersized, sealed box, with only 100watts.

 

[duanebro 10+ year member]

Yes, it is true that a ported box can do very well I'm terms of sq. It is easier to mess up than a sealed box. I can't find much info on this sub, but if it has a qts of .37 and a fs of 22 Hz I'd think a small, very low tuned box would be very nice. Then you could plug the port to try it sealed also.

 

[MediumTech 10+ year member]

Yes, it is true that a ported box can do very well I'm terms of sq. It is easier to mess up than a sealed box. I can't find much info on this sub, but if it has a qts of .37 and a fs of 22 Hz I'd think a small, very low tuned box would be very nice. Then you could plug the port to try it sealed also.

I'll check into that, but I'm thinking that a sealed box will be a much different size vs. ported, and I don't think it would work to experiment with installing and removing the plug.

Is this enough inforrmation on the woofer?

IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

Sealed Enclosure Range: .55cu.ft. - 1.1cu.ft

Fs- Resonant Frequency: 22.23 Hz

Vas- Equivalent volume: 3.10cuft (88 liters)

Xmax- One way linear: 19.0mm

Sd- Cone Area: 399.1 cm2

Splo- Sensitivity: 85dB

Power: 50-500W RMS

XMax: 17.0mm

Sealed ft3: 0.70

Ported ft3: 1.00

WoofersEtc.com - IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

 

[zako 10+ year member]

Why sealed? Not an insult. Just curious as to why people go sealed versus ported. Is it a SQ thing?

The most common argument I have heard is flat frequency response. Vented box can be very useful to achieve a flat frequency response outside of car. Inside of car, you get more SPL because of cabin gain, and vented can result in exaggerated lows. I can see myself getting a vented box subwoofer once I have an advanced processor with equalizer bands centered at say 20, 35, 50Hz, etc or fully parametric or if someone designed a ported box for best (flat) response inside of my car.. Actually, to tell the truth, most likely I will stop screwing around with the sub stage components altogether and leave it as is, a budget 12 inch in a sealed box.. too much trouble for something that plays in a 60Hz-wide band and ultimately will not work perfectly (from SQ perspective) in a car on 100% of music content no matter how much you screw with it (due to buzzes and rattles "coloring" sound, cabin gain, rear sub location, etc). I can see myself adding something like an advanced processor and TrueRTA setup to flatten up the frequency response or perhaps the MS-8 and let it tune the system.

 

[duanebro 10+ year member]

I'll check into that, but I'm thinking that a sealed box will be a much different size vs. ported, and I don't think it would work to experiment with installing and removing the plug.
Is this enough inforrmation on the woofer?

IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

Sealed Enclosure Range: .55cu.ft. - 1.1cu.ft

Fs- Resonant Frequency: 22.23 Hz

Vas- Equivalent volume: 3.10cuft (88 liters)

Xmax- One way linear: 19.0mm

Sd- Cone Area: 399.1 cm2

Splo- Sensitivity: 85dB

Power: 50-500W RMS

XMax: 17.0mm

Sealed ft3: 0.70

Ported ft3: 1.00

WoofersEtc.com - IDQ10V3.D4 - Image Dynamics 10" IDQ Version 3 Subwoofer

No really, but I made it work. I would not build a box based on that. But I did model it. Stick with a sealed box. Ported looks good for a home setup, or if you don't have any cabin gain. Depending on the cabin gain you have in your car I would consider going with a 1 cf box.

edit: I need another cup of coffee. Stick with your plan, play with polyfil to fine tune it. Enjoy //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[MediumTech 10+ year member]

He said coffee... I really need to get my home roaster fixed.

Gonna brew what I got...