found some old subs in attic, what box?

[jroo]

Wife had me cleaning up the attic and found an old box. I forgot I bought a set of credence clearance subs couple of years back cheap. Credence gave some very general box requirements and specs. Said could go in 0.5 sealed or 1 cube ported, but didnt giving tuning or port size. Looking at the specs, do either of these make sense or would you do something different? I will do something quick as a project with my 9 year old duing his winter break coming up.

here are the specs Credence gave for the 2 10" subs I have:

Power Rating RMS Cont. 250 Watts
Max Power Rating-Unclipped Amp 350 Watts
Freq Response 25-150 Hz
Nominal Imp 8 Ohms
Voice Coil 2" 4 Layer
FS 25.18 Hz
Qms 8.8040
Qes 0.3579
Qts 0.3439
Vas 67.30 Liters
Cms 0.3994E-03 M/N
Re 6.93Ohms
BL 17.505 Newtons/Amp
Sd 0.034636 Sq. m.
Mms 0.100017 Kg
Hvc 0.980"
Hag 0.375"
Xmax 0.303"
Xlin 0.605"
Ref Eff 0.2885%
Predicted Output 86.802 DB/1W/1M

Power Rating RMS Cont. 250 Watts
Max Power Rating-Unclipped Amp 350 Watts
Freq Response 25-150 Hz
Nominal Imp 8 Ohms
Voice Coil 2" 4 Layer
FS 25.18 Hz
Qms 8.8040
Qes 0.3579
Qts 0.3439
Vas 67.30 Liters
Cms 0.3994E-03 M/N
Re 6.93Ohms
BL 17.505 Newtons/Amp
Sd 0.034636 Sq. m.
Mms 0.100017 Kg
Hvc 0.980"
Hag 0.375"
Xmax 0.303"
Xlin 0.605"
Ref Eff 0.2885%
Predicted Output 86.802 DB/1W/1M

[hispls]

Which subs were they? New old stock of stuff they made in the 90's or their newer "CREDENCE" branded stuff?

[jroo]

they are listed as Bostwick HD pros. I think the bostwick was also an Atomic model and one other company. My understanding credence built the sub and put different labels on the dustcap. When I look bostwick HD pros up online and see boxes people use, they are all over the map. I have seen large ported, sealed, 4th order. I might just do a sealed box to make life easy for my son and I

[Motorboat KER]

For a sealed box 1.0 cubes after dispacement seems about right. Ported prolly around 2 tuned to 35hz since that is the general Hz for most daily boxes.

Edit: if these are both dual 4 ohm are you wiring to 1 ohm?

Edit edit: since the peak power is so close to the rms you gotta be careful when choosing an amp. I would say the rf prime 500 but rf normally puts out 150-200 more watts from personal experience.

[Joe X]

So here is a suggestion for a trunk car, power: to 170W RMS per sub, amp subsonic filter to 28Hz, minimum port clearance 2 1/4", figure is just an assembly guide, ignore the braces and 45s:

NOTE: old subs with foam surrounds are likely ready to fail by now, keep power below rated and avoid playing well under tuning. I would just sell them but to build something just for fun then maybe ok.