I know, I know, not worth it...
But, it is very easy and cheap to do.
Original crossover schematic reveals parallel RLC circuit in unsuccessful attempt to linearize the frequency response of the double-cube satellite. The first low value resistor actually is a lamp for protection. Two 33 microF capacitors, for total of 66 microF, are the high-pass filter for the satellite.
It can be done much better, with different values of R, L and C. I wanted to replace both inductors (L=0.31 mH) but they were glued with excessive amount of gooey glue and were impossible to remove, so I left them. I replaced 15 microF capacitor with 6.8 microF and 3.3 ohm resistor with 10 ohm. Much better - see the measured on-axis frequency response of the dual-cube satellite before (red) and after the modification (green).
Frequency response at 30 degrees horizontal is in blue (after the modification). Not bad!
Forget about the direct/reflecting marketing trick, just aim both cubes straight in the room.
As you can see, satellites go down below 300 Hz. Subwoofer go down above 160 Hz, so there is some 6 dB dip in between, centered at about 210 Hz.
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My impression when I heard them last time was the treble sounded bad. The jewel cube series performed much better. I blame it on the drivers. See if you could replace the drivers, or add an additional miniature tweeter with a high pass at 10kHz.
Tangband has a very small tweeter you could utilize for that....
Oon
Tangband has a very small tweeter you could utilize for that....
Oon
Not mine, just helped a friend, not intending to go further.
Yes, the treble is piercing terrible, so the modification. But the terrible 13 kHz peak stays on.
Top secret insider information - the first generation Bose cubes use Panasonic drivers (probably from those cheap midi or mini systems).
Yes, the treble is piercing terrible, so the modification. But the terrible 13 kHz peak stays on.
Top secret insider information - the first generation Bose cubes use Panasonic drivers (probably from those cheap midi or mini systems).
That would explain plenty. If they bothered rouse one of the nice full range 2" we have now, the sound would have been so much better...
Oon