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New SA1521


The SA1521 is a two-way, bi-amplified, horn loaded, active speaker system that features high-quality RCF Precision components including a high efficiency, light mass, 15-inch low frequency transducer with 2.5-inch inside/outside high temperature coil technology. This innovative woofer is combined with a new, state of the art, RCF Precision 1.75-inch titanium dome, 1-inch exit compression driver. This unique combination allows the system to be crossed over at 1300 Hz enabling the woofer to more efficiently keep up with the horn/driver combination. The result is that the SA1521 offers much better mid-band performance than other popular 15 +1 designs.

Power is provided by a fully integrated amplifier module that contains two separate amplifiers — one for each driver, which together generate an impressive 500 watts continuous RMS of total power and a maximum peak SPL of 130 dB. The low frequency amplifier uses the same unique switch mode, Class G hybrid topology found in Mackie’s proven SRS1500 Active Subwoofer. In the SA1521, this design delivers 400 watts of continuous output, and over 650 watts peak at 90% efficiency. The result is very little power being dissipated thermally through the heat sink.

Integrated electronics provide equalization, time correction and phase alignment along with complete electronic and component protection circuitry. The SA1521 also includes a single line level volume control.

The Mackie engineered trapezoidal cabinet is designed to withstand Neanderthal-levels of roadie and rental company abuse. Mackie molds the top and bottom of the enclosure using a high-impact resistant composite resin. The front, back and sides are constructed of heavy duty, 13-ply Baltic Birch used by fine cabinetmakers and high-end audiophile speaker systems. The weight-balanced SA1521 features two large-grip side handles while top and bottom handles allow optimal portability, set-up and repositioning.

System Acoustic

–3dB response

50Hz - 18kHz

–10dB response

45Hz - 20kHz

Max SPL long-term

130 dB

Max SPL Peak

133 dB

Crossover Point

1300Hz

 

Input /Output

Input

Bal./unbal. Female XLR

Loop-through (parallel w/input)

Bal./unbal. Male XLR

Level Control

Rotating knob (–15 to +4 dB), center detent @ 0 dB

 

Amplifiers

Total Amplifier Power

500 watts Continuous*

High Frequency

100 watts*

Type

Class AB

Rated THD

.03%

Low Frequency

400 watts*

Type

Class G Hybrid

Rated THD

0.03%

*Rated power is continuous RMS wattage into transducer‘s rated impedance @ 1kHz for the HF amplifier and @ 100Hz for the LF amplifier
**-6dB

 

High Frequency Section

Diaphragm Size

1.75"

Horn Exit Diameter

1.0"

Phase Plug

3-Slot Optimized Geometry

Diaphragm Material

Damped titanium

Magnet Type

Ferrite

 

Horn Design

Horizontal Coverage**

75° 1kHz to 10kHz avg.

Vertical Coverage**

65° 1kHz to 10kHz avg.

Type

Constant Directivity

Mouth Size

10.6" x 10.6" (27 x 27cm)

Throat size

1.0" (2.54 cm)

 

Low Frequency Section

Number of Drivers

1

Woofer Size

15"

Voice Coil Diameter

2.5" with heat-resistant Inside/Outside Winding

Diaphragm Material

Epoxy-reinforced Cellulose

Magnet Type

Ferrite

 

Construction Features

Basic Design

Trapezoidal

Material

13-ply Baltic birch/ resin end caps

Finish

Wear-resistant black PVC vinyl

Handles

Two on sides, One top, One bottom

Grill

Perforated metal with weather-resistant coating

 

Line input Power

US

120 VAC, 60Hz

Recommended amperage service

13 Amps

Europe

230 VAC, 50Hz

Recommended amperage service

7 Amps

AC connector

3-pin IEC 250 VAC

 

Control System Function

Electronic Crossover

Phase Alignment

Time Correction

Equalization

Parametric equalization

 

Safety Features

Protection

Low Frequency Dynamic Bass Protection, RMS Limiting, Power Supply and Amplifier Thermal Protection

Display LEDs

Signal Present, Limit, Power ON, and Thermal (Cool Down Auto Reset)

 

Physical

Height

32.0 in. (81.3 cm)

Width Front

19.06 in. (48.4 cm)

Width Back

13.9 in. (35.3 cm)

Depth

18.11 in. (46.0 cm)

Weight

83.6 lbs. (38 kg)

The Website: http://www.mackie.com

 

 

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