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Driver Protection

DC and Short Protection

Yes

Yes

Clip Limiter

Limiter Indicator

Red LED

Red LED

Red LED

Red LED

Power  Indicator

Green LED

Green LED

Green LED

Green LED

Connectors

Input A – type

Switchable Balanced 

Mic or Line Level Input 

Switchable Balanced 

Mic or Line Level Input Balanced

Balanced

Input Sensitivity

Mic:-40dBu Line:0dBu

Mic:-40dBu Line:0dBu

Line:0dBu

Line:0dBu

Maximum Input Level

22dBu

22dBu

22dBu

22dBu

SPECIFICATION

Model Name

DELTA-AX12

DELTA-AX15

DELTA-AX15B

DELTA-AX18B

System Type

Active 12” 2-way Bi-

Amplified

Active 15” 2-way Bi-

Amplified

Active 15” Subwoofer 

Active 18” Subwoofer 

Frequency Response (+/-3dB)

60Hz - 20kHz

50Hz - 20kHz

42Hz - 200Hz

38Hz - 200Hz

Frequency Range (-10dB)

55Hz - 20kHz

45Hz - 20kHz

Low Frequency Transducer

130dB

131dB

130dB

132dB

Calculated Maximum SPL @1m

Size (mm / inches)

332mm / 12”

404mm / 15”

404mm / 15”

470mm / 18”

Coil Size (mm / inches)

75mm / 3”

75mm / 3”

101.6mm / 4”

101.6mm / 4”

Impedance

4 Ω

4 Ω

8 Ω

8 Ω

High Frequency Transducer
Type

Compression Driver

Compression Driver

-

-

-

-

-

-

-

-

-

-

-

-

Coil Size (mm / inches)

51.2mm / 2”

51.2mm / 2”

Exit Size (mm / inches)

35.6mm / 1.4”

25mm / 1”

Diaphragm Material

Titanium

Titanium

Impedance

8 Ω

8 Ω

Nominal Coverage (H x V)

90° x 45°

90° x 45°

Amplifiers

Low-Frequency Power Amplifier  

RMS

650w (Class D)

650w (Class D)

900W (Class D)

1000W (Class D)

High-Frequency Power Amplifier  

RMS

100W (Class D)

100W (Class D)

NA

NA

Amplifier Protection

Yes

Yes

Yes

Yes

Power On Protection

Power switch

on/off mute

Power switch

on/off mute

Power switch

on/off mute

Power switch

on/off mute

Amplifier Shut Down. 

Auto Reset

Amplifier Shut Down. 

Auto Reset

Amplifier Shut Down. 

Auto Reset

Amplifier Shut Down. 

Auto Reset

Thermal Protection

Low Line Voltage Shut Down

80% Nominal Line

Voltage

80% Nominal Line

Voltage

80% Nominal Line

Voltage

80% Nominal Line

Voltage

Turns on Approx 650w

Output

Turns on Approx 650w

Output

Turns on Approx 900w

Output

Turns on Approx 1000w

Output

Independent LF and 

HF Limiters

Independent LF and 

HF Limiters

Yes

Yes

Yes

Yes

Input Connector

XLR 1/4

Combo jack

2 x RCA

XLR 1/4

Combo jack

2 x RCA

TRS jack and 

Female XLR

TRS jack and 

Female XLR

8

Summary of Contents for DELTA-AX ACTIVE Series

Page 1: ...www wharfedalepro com ACTIVE LOUDSPEAKERS DELTA AX ACTIVE SERIES DELTA AX12 DELTA AX15 DELTA AX15B DELTA AX18B...

Page 2: ...NTENTS Important warnings safety instructions 1 Introduction and Key features 2 DELTA AX12 DELTA AX15 Rear panel layout 3 4 DELTA AX15B DELTA AX18B Rear panel layout 5 Dimensional drawings 6 7 Speci c...

Page 3: ...ting instructions unless you are quali ed to do so In addition opening the casing will result in your warranty becoming null and void 16 Do not install this apparatus in a confined space such as a boo...

Page 4: ...power ampli er 650W RMS 1300W peak CLASS D High frequency power ampli er 100W RMS 200W peak CLASS D 28 56 bit 192kHz DSP processing Independent LF and HF signal limiting Thermal DC and short circuit...

Page 5: ...DELTA AX12 AX 15 REAR PANEL LAYOUT 3...

Page 6: ...ss buildup due to half space loading 8 Front LED defeat switch Switches off the front power LED for discrete applications 9 10 POWER ON OFF switch POWER ON indicator LED and LIMIT indicator LED The sw...

Page 7: ...een LED indicator illuminates when the unit is powered up 6 Crossover frequency control Adjustable 80Hz to 200Hz 7 Phase switch Selects the polarity of the signal being sent to the subwoofer 0 selects...

Page 8: ...DIMENSIONAL DRAWINGS 6 DELTA AX12 644 0 373 0 390 0 DELTA AX15 446 0 406 0 714 0...

Page 9: ...DIMENSIONAL DRAWINGS 7 DELTA AX15B 471 0 600 0 485 0 DELTA AX18B 539 0 650 0 553 0...

Page 10: ...cy Transducer Type Compression Driver Compression Driver Coil Size mm inches 51 2mm 2 51 2mm 2 Exit Size mm inches 35 6mm 1 4 25mm 1 Diaphragm Material Titanium Titanium Impedance 8 8 Nominal Coverage...

Page 11: ...ing M10 x 6 M10 x 6 Enclosure Material and finish 15mm Plywood 15mm Plywood 15mm Plywood 15mm Plywood AC Power details Power Supply AC Power Options AC100 120V 220 240V 50 60HZ AC100 120V 220 240V 50...

Page 12: ...hase In the event of malfunction contact your authorised Wharfedale Pro dealer or distributor for information Please be aware that the warranty details may di er from country to country Contact your d...

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