refitting logitech z-2300 sub into different cabinet: room for improvement?

[erikb1971]

Hi all

I have just taken apart the sub cabinet of my Logitech Z-2300 and I want to build it into my furniture to have the ugly box out of sight. Having it taken apart, I wonder if there is room for improvement.

1. could I replace the driver (it turns out it is a Tang Band W8-670Q). specs (wich mean absolutely nothing to me):
Fs = 42.95 HzRe = 7.80 ohms
Le = 7328.42 uH
L2 = 3120.63 uH
R2 = 52.25 ohms
Qt = 0.52 Qt
Qes = 0.57 Qes
Qms = 6.49 Qms
Mms = 50.81 grams
Rms = 2.112233 kg/s
Cms = 0.000270 m/N
Vas = 10.35 liters
Sd= 165.13 cm^2
Bl = 13.755757 Tm
ETA = 0.14 %
Lp(2.83V/1m) = 83.66 dB


Or could I imrove the size of the cabinet:

The original enclsure is 30,5 cm x 25cm x 25 cm (inside) = 12" x 10" x 10".
Maximum inside size of the new enclosure is 23cm x 41cm x 38cm (= 9.1" x 16,1" x 15")


The original is ported with some weird U-shaped plastic tube, diameter of the outside hole 5,3", the diameter of the tube itself is 3", the length of the tube about 22".


I hope the specialists here have some interesting things to say!


Thanks in advance!


Erik Blokpoel

[GM]

Greets!

First things first, these specs are somewhat different than what is published, so are yours measured or........?

GM

[erikb1971]

Originally Posted by GM

Greets!

First things first, these specs are somewhat different than what is published, so are yours measured or........?

GM

nope not measured (have most of them no clue what they mean). I have the info from a forum, he seems to have measured it. Sorry I did not check with the specs of the tangband driver myself!

[tb46]

Hi erikb1971,

Are the specs measured? In any case they are not the specs of a Tang Band W8-670Q. Please, see TB's website.

Regards,

[erikb1971]

The specs seem to be measured from the original speaker: logitech w200of120-02f. I found on th einternet it was a tangband driver, but that does not seem to be the case. Again sorry for the confusion!

[tb46]

Hi GM,

One phone call, and you beat me to it. :-)

Regards,

[tb46]

Hi erik1971,

Here is the Boxplot output for your speaker in a box with your dimensions, vented w/ 3"Dia. Port.

Regards,

[erikb1971]

wow... that looks pretty impressive... but I have no clue what that means. It is bedtime in Europe, so Iam gonna take a good night sleep and study it in the morning. If Iam not able to figure out what it means I will get back :-) Thanks a lot for the effort!

Erik

[bjorno]

Originally Posted by erikb1971

..I wonder if there is room for improvement.

Fs = 42.95 HzRe = 7.80 ohms
Le = 7328.42 uH
L2 = 3120.63 uH
R2 = 52.25 ohms
Qt = 0.52 Qt
Qes = 0.57 Qes
Qms = 6.49 Qms
Mms = 50.81 grams
Rms = 2.112233 kg/s
Cms = 0.000270 m/N
Vas = 10.35 liters
Sd= 165.13 cm^2
Bl = 13.755757 Tm
ETA = 0.14 %
Lp(2.83V/1m) = 83.66 dB


Or could I imrove the size of the cabinet:

Erik Blokpoel

Hi Eric,

Why not build a multi-folded TH using 0.5" Ply (using the driver specs here-above):

b

[sreten]

Hi,

The simplest way of doing it is using an internal volume about
20% to 30% larger with the original vent, anything more
radical may not suit any amplifier EQ.

rgds, sreten.