Crossover selection help for speaker build (kind of)

[Triumph]

I have a pair of garage speakers that my dad bought while in the Navy some 40 years ago. I blew out the woofers and tweeters a long time ago and replaced them with whatever Radio Shack speakers that fit. The speakers originally had a built in adjustable crossover of some kind, but the pots on them are so scratchy that it's impossible to tune and now one of the speakers is completely cutting out the woofer. So I'm thinking of just replacing the crossovers entirely with something like one of these:

http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=193

I'm not looking for audio perfection here, the speakers are pretty much junk but I don't want to throw them away for sentimental reasons. And they do their job getting music to my garage. I know all of this stuff is supposed to be "tuned" properly, so I want to get it as close as possible without doing a lot of work. 🙂

The speakers are ~19L x 11W x 9D
Woofer is a 10" Radio Shack 40-1014, specs:

10" Polypropylene Woofer (400-1014) Specifications Faxback Doc. # 14199

Frequency Response:...................................35 Hz - 3 KHz (-6dB)
Nominal Impedance:..................................................8 Ohms
DC Resistance (Re):...............................................6.7 Ohms
Free Air Resonance (Fs):............................................35.4Hz
Suspension Compliance (CMS):.....................................0. 72mm/N
Equivalent Air Volume (VAS):.........................................4.3Ft
Effective Diameter (D):............................................8.25 in
Effective Area (SD):.............................................0.0345 m2
Moving Mass (QMS):................................................28 Grams
Mechanical Q (QMS):...................................................5.33
Electrical Q (QES):..................................................0.618
Total Q (QTS):.......................................................0.554
Peak Power Handling:..............................................40 Watts
Peak-to-Peak Linear Excursion (Xd):.................................0.5 In
Gap Flux Density (Bg):............................................11 Kg
SPL(1w @ 1m):...................................................91.5 dB

Tweeter is a Pioneer FBDD69-51F tweeter

Polymer dome tweeter with strontium magnet. Ferro fluid cooling allows for maximum heat dissipation and increased power handling capability. Dome tweeters offer natural and unstrained high frequencies. * Power handling: 30 watts RMS/45 watts max * Voice coil diameter: 3/4" * Impedance: 8 ohms * Frequency response: 2,000-20,000 Hz * Magnet weight: 2.4 oz. * SPL: 90 dB 1W/1m * Net weight: 1 lb. * Manufacturer model number: FBDD69-51F * Dimensions: Overall Diameter: 4", Cutout Diameter: 2-3/8", Mounting Depth: 1", Magnet Diameter: 2-3/8", Magnet Height: 3".

So basically, since the woofer's upper range is 3,000 hz and the tweeter's lower range is 2,000 hz, should I just buy the 2,500hz two way crossover and throw it in there?

TIA!

 

[kornphlake]

For what you're doing a 2500hz xo will probably do the job, it might sound a little bit harsh in the midrange, but my best guess is that with your expectations what they are it won't bother you. You might consider a 3000k xo if you like the Bose sound, it will thin out the mid range a bit without leaving too big of a hole in frequency response.

 

[Triumph]

Thanks, i got nothing to lose, I probably won't notice the difference anyway. I'm not going for audio perfection here.

 

[Viperoni]

If you're not going to turn them up loud, go for 2khz, otherwise, 2.5khz will be a bit safer.