[cybercop]

I've been all over the map for sub driver considerations. Going back and forth between dual shallow 8's like SWS-8xi, dual CDT 6x9s, cutting the back door like crazy for a Alping type R 8 ... etc. Like I said, been all over the map.

I am ready to just do something!!!

last question before I jump in,

Considering I am buying a driver that the vendor says is IB compatible but is recommended for a small enclosure, which would be the best option.

Take the EarthQuake SWS-8xi, for example.
It states it can run free air, but also states that the recommended enclosure size is .2 cubic feet. If I created a shallow box I might be able to squeeze .30-.35 for two of these.

or

I could just build a show box overtop of the hole in the rear door that the stock 6.5s are installed into. This would let them move free air into the volume of the door.

Which would be the best way to go. A smaller than suggested sealed enclosure or a free air application?

This is the hole they will be going over

image hosting 30 mb

 

[cybercop]

Oh, I love asking questions. Just get more issues/problems than answers

Pods won't work to well as I only have about 3.5" of clearance between this "tailgate/barn" door and the rear jump seats.

Let's say there is a way to dampen the hell out of that door. What would the answer to the question be?

 

[cybercop]

If a manufacture says that a driver is 150watts rms, IB compatible, and states a recommended box specification, would you cut the 150 watts rms in half to run IB?

Of all the IB drives I have researched, none mention a recommended RMS for IB and a RMS for Boxed.

 

[Beckerson1]

If a manufacture says that a driver is 150watts rms, IB compatible, and states a recommended box specification, would you cut the 150 watts rms in half to run IB?

Of all the IB drives I have researched, none mention a recommended RMS for IB and a RMS for Boxed.

Ratings are done free air in many cases.

 

[cybercop]

EarthQuake SWS-8Xi
Sensitivity: 86.7db
RMS: 150 Watts
Fo:30.39
Sd. (msqM):22
BL. :6.21
Qms:3.987
Qes:0.804
Qts:0.669
Vas (Ltr):27.83L
Xmas:23mm

Pioneer TS-SW2002D2
Sensitivity: 86db
RMS: 150 Watts
Qts:0.98
Vas (Ltr):3.8L
Xmas:2.8mm
No other parameters given

CDT ES-0690 Gold
Sensitivity: 86.1db
RMS: 125 watts
Free air Resonance: 47.1
Qms: 8.581
Qes:0.666
Qts:0.618
Vas:16.77L
Moving Mass: 42.26Gr
Moto Force Factor: 8.64Tm

 

[cybercop]

Probably putting 2 of each, depending on what I decide.

 

[cybercop]

So I can learn, can I ask why?

 

[cybercop]

Thanks for the info. Very helpful. I'm actually going to setup a Windows VM on my Mac so I can run some of the modeling software.

Given my restraints, would you recommend a different driver for a subwoofer application.

Not trying to thump the neighbor hood, but some good low end for hip hop and rock. Can't go deeper than 3.5" mount depth, preferably much shallower.

Thanks very much for the help!

 

[cybercop]

Your saying run those in each of the front doors?

Would this be to supplement the bass up front?

 

[cybercop]

Wow! Just priced these. I love good sound, but not that much��

Any recommendations in the $85 to $100 a piece range?

 

[cybercop]

One last driver to ask your advice on. The Tang Band 6x9. How do you think this would compare to the CDT 6x9 above

NOMINAL IMPEDANCE 8 W
DCR IMPEDANCE 6.5 W
SENSITIVITY 1W/1m 87 dB
FREQUENCY RESPONSE 35-350 Hz
FREE AIR RESONANCE 35 Hz
VOICE COIL DIAMETER 38.5 mm
AIR GAP HEIGHT 8 mm
RATED POWER INPUT 90 W
MAXIMUM POWER INPUT 170 W
FORCE FACTOR, BL 13.27 TM
MAGNET WEIGHT (29.2oz) 826 g
MOVING MASS 49.89 g
FERROFLUID ENHANCED No
SUSPENSION COMPLIANCE 417.060 uMN-1
EFFECTIVE PISTON AREA 0.0226 m2
Levc 0.911 mH
Zo 68 ohm
X-max 7.3 mm
Vas 30.25 Litr.
Qts 0.37
Qms 3.93
Qes 0.40

 

[cybercop]

Gregerst22, you have been most helpful. About to start ordering stuff and will definitely keep you posted on this build.

I am thinking the Tang Band might be a little less abusive on the tailgate door causing less rattling, however not sure if it will get low like the CDT.

The first choice will be a set of the JLs that I am currently trying to get at a good price. If not, it will be either the CDTs or the Tang Bands. Going to get some of the SIs for the front doors.

Once that is done, now I will need to find a amp to run off the MS8 I got to power these things.

Thanks again for the help

 

[cybercop]

Well, didn't get the JLs so it looks like Tang Band. Going to save me money on a amp!

Any recommendations on a amp that will give 200watts to the 2 tang bands and 60 to 75 watts each to the SIs?

 

[YukonXL04]

Greger, not sure if you know but this is for his rear cargo door, not front doors. He is looking for a sub to put back there.

I say stick with your 2 8's sealed.

 

[cybercop]

yep, the tang band for the tailgate and the SIs for the front doors.

Thanks for all the help. Not hacking up the rear door is going to make the wife much happier!

 

[cybercop]

Is there any other place to get specs on the SI TM65?

the site says dimensions are 8x8x4. Is that 8" in diameter?

Also, no power handling range?

And, since these are going in doors, would you put foam baffles around them to protect them?

 

[cybercop]

gregest22,

Thanks for all of your help. Ordered everything. Couldn't believe how much all the siring and other accessories cost compared to the actual exciting equipment part .

You suggested the PPI Phantom 900.4. I was wondering what you thought about their other amps, such as the Atom series? Saw the overall dimensions of the A1000.4 and it is much smaller. I am running into some size constraints under the seats due to the MS8.

Not sure if the Atom can be ran in 3 channel mode, though.

 

[cybercop]

What would you think of the JBL MS-A1004

It is
100x4 @ 4 ohms
Bridged 200x2 @ 4 ohms and claims to be able to do 4/3/2 mode.

JBL MS-A1004 400W 4-Channel Amp w/ Digital Input Mixer

I hate to be OCD, but I like the idea of having everything JBL under the seat and I might be able to pick this up on the cheap.