All new features on the 8MR450A make it capable of high output and low distortion, this midrange is perfect for filling in the important midrange response in any high output sound system. Great Addition to the ALTO Series!
- 2″ DUAL layer CCAW voice coil wound on a glass fiber former, 8 ohms
- Low inductance for great transients and extended high frequency response up to 9,500 Hz
- Large voice coil winding has improves power handle giving it 450 watts RMS continuous program power rating
- High sensitivity of 96 db makes this a great budget choice for high output home, car, and professional audio systems
- Full copper sleeve on the pole-piece for low distortion and inductance
The new 8MR450A from ALTO Series has everything you want in a mid range pro audio loudspeaker, without sacrificing performance we have designed a compact and versatile footprint with only 3.21” of mounting depth.
The 38 mm (1.5 in) copper clad aluminum wire is wound in a double layer using a high temperature resin adhesive on a strong ventilated glass fiber former. Also, a copper sleeve is included on the pole piece which reduces inductance to improve the high frequency response.
A triple roll cloth surround, combined with an optimized fiber pressed paper cone, ensure the speaker’s frequency response is smooth and extended.
This professional midrange speaker is purpose-built to cover from 100 Hz to 6,000 Hz in three-way speakers, but also works great as a door speaker in car audio applications and a woofer in two-way satellite speaker concept.
GENERAL SPECIFICATIONS
| Nominal Diameter | 8″ (203 mm) |
| Nominal impedance | 8 Ohms |
| Nominal Power Handling | 225 Watts |
| Continuous Program Power (RMS) | 450 Watts |
| Max Peak Power | 900 Watts |
| Sensitivity 2.83V at 1m | 96 dB |
| Recommended Hi Pass Crossover** **For Full Power Handling | 140 Hz** **12db Per Octave Crossover |
| Frequency Response | 80 – 9,500 Hz |
| Voice Coil Diameter | 1.5″ (38 mm) |
| Voice Coil Wire | CCAW |
| Voice Coil Winding Depth | 11.0 mm |
| Former Material | Kapton |
| Magnetic Gap Depth | 6.0 mm |
| Frame Material | Stamped Steel |
THIELE-SMALL PARAMETERS
| Equivalent Volume | Vas | 34.86 l |
| Excursion (mathematical)*** | Xmax | 4.00 mm |
| Free Air Resonance | Fs | 65.26 Hz |
| Mechanical Factor | Qms | 15.19 |
| Electrical Factor | Qes | 0.57 |
| Total Factor | Qts | 0.55 |
| Cone Area | Sd | 241 cm² |
| Mechanical Mass | Mms | 13.78 g |
| Bl Factor | Bl | 7.58 Tm |
| Dc Resistance | Re | 5.8 Ohms |
| Inductance | Le | 0.257 mH at 1 kHz |
| Mechanical Mass Without Air | Mmd | 11.67 g |
| Mechanical Compliance | Cms | 0.432 mm/N |
EXTRA INFO
| Overall Diameter | 8.22″ (209 mm) |
| Front Mount Baffle Cutout | 7.26″ (184.5 mm) |
| Mounting Depth | 3.21″ (81.5 mm) |
| Overall Depth | 3.50″ (89 mm) |
| Net Weight | 4.63 Lbs (2.1 kg) |
| Shipping Weight | 5.07 Lbs (2.3 kg) |
| Carton Dimensions W x L x H | 8.66 x 8.66″ x 4.17″ (220 x 220 x 106 mm) |
