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-   -   W4-1320sb (http://www.diyaudio.com/forums/full-range/63118-w4-1320sb.html)

Corloc 21st September 2005 07:03 PM

You like them better than the paper TB W4-616?

The 616 only goes to about 14k with an fs of 65 hz. It's a little hard to compair, because the 1320's are not in optimized cabs yet. The 616 has no top and until I have cabs, the 1320's have no bottom.

Andrew S- 22nd September 2005 07:42 PM

OK just got mine in the mail yesterday.

Got someone thats going to test them for me so when he is done I will link the Praxis and Klippel reports.


Frequency response and off-axis response
Actual Thiele Small parameters
non-linear distortion analysis
waterfall and/or energy storage analysis
BL/KMS curves

mazeroth 25th September 2005 03:44 AM

Andrew, can't wait!

Josephjcole 25th September 2005 02:01 PM

Fs 81.839996, Qms 2.121518, Qes 0.674866, Qts 0.511997
Vas = 4.11 liters

Fs 75.559998, Qms 2.049201, Qes 0.601340, Qts 0.464911
Vas = 4.8 liters

Here are the T/S parameters after 36 hours at 20Hz, of the two that I ordered. For anybody who is interested.
Joe

eagles 26th September 2005 08:41 AM

my personal suggustion
 
I think it is better to cut off the lower frequcy singal under 80HZ for the 3 inches or 4 inches full range speaker, and the sound will turn more pure and clear.

chuck55 28th September 2005 05:56 PM

T-B recommends:
"intended for thin or flat speaker box design"

Here is a 3.5 liter cabinet design from Aan at T-B:

c:\...\w4-1320sb vented box design.pdf

Unfortunately, I can't seem to copy the .pdf file Alan e-mailed me. Here is the best I can do:


File: w4-1320sb.bb6
w4-1320sb vented box design By Eagle Chang, TB-speaker
Ningbo China
+86-574-86553648
+86-574-86551617
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square
--Box Parameters--
Vb = 3.558 liters
V(total) = 4 liters
Fb = 80 Hz
QL = 7
F3 = 97 Hz
Fill = normal
--Vents--
No. of Vents = 1
Vent shape = round
Vent ends = one flush
Dv = 38 mm
Lv = 111.9 mm
Driver Properties
--Description--
Name:
Type: Standard one-way driver
--Configuration--
No. of Drivers = 1
--Mechanical Parameters--
Fs = 75 Hz
Qms = 1.5
Vas = 5.985 liters
Cms = 1.297 mm/N
Mms = 3.472 g
Rms = 1.091 kg/s
Xmax = 3 mm
Xmech = 4.5 mm
P-Dia = 85.19 mm
Sd = 57 sq.cm
P-Vd = 0.0171 liters
--Electrical Parameters--
Qes = 0.484
Re = 6.8 ohms
Le = 0.01 mH
Z = 8 ohms
BL = 4.794 Tm
Pe = 20 watts
--Electromech. Parameters--
Qts = 0.366
no = 0.503 %
1-W SPL = 89.16 dB
2.83-V SPL = 89.87 dB
Normalized Amplitude Response (dB-SPL/Hz) BassBox 6 Pro
dB
6
0
-6
-12
-18
-24
-30
-36
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Custom Amplitude Response (dB-SPL/Hz at 1 m) with 20 watts BassBox 6 Pro
dB
109
103
97
91
85
79
73
67
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Maximum Acoustic Power (dB-SPL/Hz at 1 m) BassBox 6 Pro
dB
108
102
96
90
84
78
72
66
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K

chuck55 17th October 2005 02:07 AM

trying again with a link

happy.gringo 13th December 2005 03:54 PM

anymore work on these designs?
 
Hi Guys,
I am going to bring back a pair of these from the States and I would like to build a simple design that could either pair with a sub or stand alone at fairly loud volume. Have you reached a design that you are satisfied with? If so, could you please share particulars?
Thanks.

Godzilla 13th December 2005 05:32 PM

Bamboo...
 
http://www.zillaspeak.com/Bamboo.asp

I have been enjoying mine. I stained the boxes last night and applied the first coat of poly...

I like their sound alot. But they sound better in the much larger pipe so i feel a different box can maximize performance.

Peace,
Godzilla

chuck55 14th December 2005 01:26 AM

Nice looking speakers! Why the cap + resistor? Near the wall don't see why they would need baffle step correction. Have you tried towing them in more to get more HF?
Mine are in 3.5 liter box with 1" dia x 4.4" long vent. Finish them by X-mas I hope.


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