Bass Guitar 450W passive extension cabinet - clone
Dimensions: H. 43,2 cm x W 38,3 cm x D 35,8 cm
Speakers: 1 x 12 inch + 1 x piezo tweeter
Wood progress
Cover and glue progress
Front pannel
Rear pannel
Inside arrangements
Audio crossover
For high frequency I use piezo tweeter: MOTOROLA KSN 1139A
Tweeter Specification:
KSN 1139A Motorola/CTS 75 Watt Piezo
Power Handling: 50 watts
RMS/75 watts MAXIMUM.
Frequency Response: 6 kHz. - 24 kHz.
Efficiency: 92 dB SPL (Sound Pressure Level) 2.83V Input @ 1Meter.Physical
Dimensions: Height: 2.0", Width: 2.0", Depth: 0.5".
Hole Cut: Diameter: 1.75".
Mounting Centers: 2.0".
For low frequency I use 12 inch speaker: 12MB600 from 18 Sound/Italy
| Nominal Diameter | 300 mm (12 in) |
| Rated Impedance | 8 Ohm |
| AES Power | 450 W |
| Program Power | 600 W |
| Peak Power | 1200 W |
| Sensitivity | 101 dB |
| Frequency Range | 58 ÷ 5000 Hz |
| Power Compression @-10dB | 0,5 dB |
| Power Compression @-3dB | 1,6 dB |
| Power Compression @Full Power | 3,0 dB |
| Max Recomm. Frequency | 2200 Hz |
| Recomm. Enclosure Volume | 30 ÷ 80 lt. (1,06 ÷ 2,83 cuft) |
| Minimum Impedance | 6,5 Ohm at 25°C |
| Max Peak To Peak Excursion | 22 mm (0,87 in) |
| Voice Coil Diameter | 75 mm (3 in) |
| Voice Coil Winding Material | aluminum |
| Suspension | M-roll, Polycotton |
| Cone | Curvilinear, Paper |
| Fs | 44 Hz |
| Re | 5 Ohm |
| Sd | 0,0531 sq.mt. (82,31 sq.in.) |
| Qms | 3,9 |
| Qes | 0,19 |
| Qts | 0,18 |
| Vas | 115 lt. (4,06 cuft) |
| Mms | 43 gr. (0,09 lb) |
| BL | 18 Tm |
| Linear Mathematical Xmax | ± 4,5 mm (± 0,18 in) |
| Le (1kHz) | 1,32 mH |
| Ref. Efficiency 1W@1m (half space) | 99,2 dB |
| Overall diameter | 315 mm (12,4 in) |
| N. of mounting holes and bolt | 8 |
| Mounting holes diameter | 7,15 mm (0,28 in) |
| Bolt circle diameter | 296 - 300 mm (11,65 - 11,8 in) |
| Front mount baffle cutout ø | 282 mm (11,1 in) |
| Rear mount baffle cutout ø | 282 mm (11,1 in) |
| Total depth | 147,5 mm (5,82 in) |
| Flange and gasket thickness | 16,5 mm (0,65 in) |
| Net weight | 8,0 kg (17,66 lb) |
| Shipping weight | 8,8 kg (19,43 lb) |
| CardBoard Packaging dimensions | 332 x 332 x 184 mm (13,07 x 13,07 x 7,24 in) |
First look
Final work
