[Justin AuBuchon]

I have coaxial 2x Radian 5215Be drivers that i want to put into some bass reflex cabinets. I thought the easiest solution for me would be to purchase some flat packs from diysoundgroup and see if they would work. Can anyone provide me with the port lengths i would need? And any suggestions on if this is a viable option? I want to use the Titan 615 Narrow flat pack for the build. Your input is appreciated.

 

[userben]

I went to Radian site (which is extremely slow to load for me) for more complete t/s params but they are vastly different, then I noticed the one you linked is 512Be and the other is 512/2B. Not sure which to go on?

 

[LTD02]

that will work fine.


using the 4" ports, just size them so that there is about 2.5" of space between the port and the inside back wall of the cab. that will provide a little extra loading (effectively lengthening the port) and reduce tune a little. tuning will likely be in the upper 30's, which would be good unless you don't have subs and need full range.

 

[Justin AuBuchon]

I went to Radian site (which is extremely slow to load for me) for more complete t/s params but they are vastly different, then I noticed the one you linked is 512Be and the other is 512/2B. Not sure which to go on?

Woofer Diameter 15" / 381mm
Impedance (LF/HF) 8 ohms / 16 ohms
AES Power Rating 500 Watts
Sensitivity (1W/1m) 97dB SPL
Frequency Response 45Hz - 20kHz
Recommended Crossover 950Hz to 1.25kHz
Voice Coil Diameter(LF/HF) 4.0" / 3.0"
Nominal Dispersion 90°
Net Weight 31 lbs. / 14 kg.
Mounting Information

Overall Diameter 15.25" / 387.35mm
Bolt Circle Diameter 14.56" / 369.82mm
Baffle Cutout Diameter 14" / 355.6mm
Overall Depth 8.23" / 209.04mm
Materials

Woofer Cone Reinforced Paper
HF Diaphragm Beryllium
HF Surround Mylar
Basket Cast Aluminum
Input Connectors (HF) .25" / 6.35mm Terminals
Input Connectors (LF) Push Button Terminals
Thiele-Small Parameters

Resonant Frequency (Fs) 39 Hz
Impedance (Re) 5.9 ohms
Total Q (Qts) .313
Mechanical Q (Qms) 3.243
Electrical Factor(Qes) .346
Comp. Equivelant Vol. (Vas) 192.4 Liters
Voice Coil Overhang (Xmax) 2.85
Surface Area of Cone (Sd)m2 .089 m2

 

[Justin AuBuchon]

I went to Radian site (which is extremely slow to load for me) for more complete t/s params but they are vastly different, then I noticed the one you linked is 512Be and the other is 512/2B. Not sure which to go on?

They are the Radian 5215Be

 

[userben]

Titan is ~ 3.8cu ft before bracing/driver/port/lining displacement.

Here's 3.6cu ft (guesstimate) tuned to 36Hz and 46Hz (I'd go 46 ).

Edit: added to 2KHz graphs.