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1.

  Read these instructions.  

2.

  Keep these instructions.

3.

  Heed all warnings.

4.

  Follow all instructions.

5.

  Do not use this apparatus near water.

6.

  Clean only with a dry cloth.

7.

  Do not block any ventilation openings. Install in accordance with the 

manufacturer’s instructions.

8.

  Do not install near any heat sources such as radiators, heat registers, 

stoves, or other apparatus (including amplifiers) that produce heat.

9.

  Do not defeat the safety purpose of the polarized or grounding-type 

plug. A polarized plug has two blades with one wider than the other. 

A grounding-type plug has two blades and a third grounding prong. 

The wide blade or the third prong are provided for your safety. If the 

provided plug does not fit into your outlet, consult an electrician for 

replacement of the obsolete outlet.

10.

 Protect the power cord from being walked on or pinched particularly at 

plugs, convenience receptacles, and the point where they exit from the 

apparatus.

11.

 Only use attachments/accessories specified by the manufacturer.

12.

 Use only with a cart, stand, tripod, bracket, or 

table specified by the manufacturer, or sold with 

the apparatus. When a cart is used, use caution 

when moving the cart/apparatus combination to 

avoid injury from tip-over.

13.

 Unplug this apparatus during lightning storms or 

when unused for long periods of time.

14.

 Refer all servicing to qualified service personnel. Servicing is required 

when the apparatus has been damaged in any way, such as power-

supply cord or plug is damaged, liquid has been spilled or objects have 

fallen into the apparatus, the apparatus has been exposed to rain or 

moisture, does not operate normally, or has been dropped.

15.

 This apparatus shall not be exposed to dripping or splashing, and no 

object filled with liquids, such as vases or beer glasses, shall be placed 

on the apparatus.

16.

 Do not overload wall outlets and extension cords as this can result in a 

risk of fire or electric shock.

17.

 This apparatus has been designed with Class-I construction and must 

be connected to a mains socket outlet with a protective earthing con-

nection (the third grounding prong).

18.  

This apparatus has been equipped with an all-pole, rocker-style AC 

mains power switch. This switch is located on the rear panel and 

should remain readily accessible to the user.

19.

 NOTE: This equipment has been tested and found to comply with 

the limits for a Class B digital device, pursuant to part 15 of the FCC 

Rules. These limits are designed to provide reasonable protection 

against harmful interference in a residential installation. This equip-

ment generates, uses, and can radiate radio frequency energy and, if 

not installed and used in accordance with the instructions, may cause 

harmful interference to radio communications. However, there is no 

guarantee that interference will not occur in a particular installation. If 

this equipment does cause harmful interference to radio or television 

reception, which can be determined by turning the equipment off and 

on, the user is encouraged to try to correct the interference by one or 

more of the following measures:

•  Reorient or relocate the receiving antenna.

•  Increase the separation between the equipment and the 

receiver.

•  Connect the equipment into an outlet on a circuit different from 

that to which the receiver is connected.

•  Consult the dealer or an experienced radio/TV technician for 

help.

  CAUTION: Changes or modifications to this device not expressly 

approved by LOUD Technologies Inc. could void the user's authority to 

operate the equipment under FCC rules.

20.

 This apparatus does not exceed the Class A/Class B (whichever is 

applicable) limits for radio noise emissions from digital apparatus as 

set out in the radio interference regulations of the Canadian Department 

of Communications.

ATTENTION

 — 

Le présent appareil numérique n’émet pas de bruits 

radioélectriques dépassant las limites applicables aux appareils 

numériques de class A/de class B (selon le cas) prescrites dans le 

réglement sur le brouillage radioélectrique édicté par les ministere des 

communications du Canada.

21.

 Exposure to extremely high noise levels may cause permanent hearing 

loss. Individuals vary considerably in susceptibility to noise-induced 

hearing loss, but nearly everyone will lose some hearing if exposed to 

sufficiently intense noise for a period of time. The U.S. Government’s 

Occupational Safety and Health Administration (OSHA) has specified 

the permissible noise level exposures shown in the following chart.

  According to OSHA, any exposure in excess of these permissible limits 

could result in some hearing loss. To ensure against potentially danger-

ous exposure to high sound pressure levels, it is recommended that all 

persons exposed to equipment capable of producing high sound pres-

sure levels use hearing protectors while the equipment is in operation. 

Ear plugs or protectors in the ear canals or over the ears must be worn 

when operating the equipment in order to prevent permanent hearing 

loss if exposure is in excess of the limits set forth here:

Important Safety Instructions

PORTABLE CART

WARNING

CAUTION    AVIS

RISK OF ELECTRIC 

SHOCK. DO NOT OPEN

RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL

ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. 

AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. 

CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.

AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE 

A LA PLUIE OU A L'HUMIDITE

The lightning flash with arrowhead symbol within an equilateral triangle is 
intended to alert the user to the presence of uninsulated "dangerous 
voltage" within the product's enclosure, that may be of sufficient magnitude 
to constitute a risk of electric shock to persons.

Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral 
est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de 
"voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque 
d'éléctrocution.

The exclamation point within an equilateral triangle is intended to alert the 
user of the presence of important operating and maintenance (servicing) 
instructions in the literature accompanying the appliance.

Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé 
pour alerter les utilisateurs de la présence d'instructions importantes pour le 
fonctionnement et l'entretien (service) dans le livret d'instruction 
accompagnant l'appareil.

WARNING — To reduce the risk of fire or electric shock, do not 

expose this apparatus to rain or moisture.

Duration, 

per day in 

hours

Sound Level 

dBA, Slow 

Response

Typical Example 

8

90

Duo in small club

6

92

4

95

Subway Train

3

97

2

100

Very loud classical music

1.5

102

1

105

Greg and Ben screaming at Troy 

about deadlines

0.5 

110

0.25 or less 115

Loudest parts at a rock concert

2

HD1501

HD1501

Summary of Contents for HD1501

Page 1: ...HD1501 OWNER S MANUAL 15 Powered Subwoofer...

Page 2: ...ifications to this device not expressly approved by LOUD Technologies Inc could void the user s authority to operate the equipment under FCC rules 20 This apparatus does not exceed the Class A Class B...

Page 3: ...ropriate level and use the polarity switch to make sure the sub is in phase with the loudspeakers The integrated pole cup can accommodate a standard mounting pole so your favorite speaker has a nice p...

Page 4: ...gh Pass output A HD1501 input A HD1501 input B Power Cord HD1501 subwoofer reproduces the low frequencies ProFX12 Mixer This diagram shows the left line level output of a Mackie ProFX12 mixer feeding...

Page 5: ...01 subwoofer reproduces the low frequencies HD1501 input A HD1501 input A Left line level output Right line level output CFX12mkII Mixer This diagram shows the left and right line level outputs of a M...

Page 6: ...ty Invert switch on the HD1501 subwoofers to optimize performance See page 10 for more information Line level High Pass output A Line level High Pass output A Full Range output A to HD1501 input A Pow...

Page 7: ...As a general guide powered subwoofers should be turned on after the mixer and other sources but prior to full range speakers Additionally they should also be powered off after the tops but before the...

Page 8: ...ng passive loudspeakers The signal at these outputs is a direct copy of the input signals These outputs allow you to daisy chain multiple subwoofers and or send the full range signals to the main loud...

Page 9: ...NPUTS REVISION SERIAL NUMBER WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING...

Page 10: ...ecially if you are listening to just the subwoofer This is normal as our ears perceive them both as the same The polarity invert switch comes into play when the HD1501 subwoofer is paired with a louds...

Page 11: ...ating a built in thermal switch will activate muting the amplifier s output When the amplifier has cooled down to a safe operating temperature the thermal switch resets itself and the HD1501 resumes n...

Page 12: ...possible If you think your Mackie product has a problem please check out the following troubleshooting tips and do your best to confirm the problem Visit the Support section of our website www mackie...

Page 13: ...output impedance of 120 ohms then you can daisy chain up to nine HD1501s This is a load of 1222 ohms HD1501 input impedance 11 kohms 9 of these in parallel 1222 ohms Since microphones typically have a...

Page 14: ...peed fans Driver Protection Peak RMS Limiter Display LEDs Power Light ON Polarity Invert Thermal Sig Limit Front Power ON AC Power Requirements US 100 120 VAC 50 60 Hz 300 watts Europe 220 240 VAC 50...

Page 15: ...o potentially hazardous substances that are generally associated with EEE At the same time your cooperation in the correct disposal of this product will contribute to the effective usage of natural re...

Page 16: ...Signal Limit LED Thermal LED Polarity Invert LED LPF 100 Hz Overexcursion Protection HPF 45 Hz Thermal Monitoring Amp Limiter Polarity Invert Thermal Mute Normal Inverted Gain HD Subwoofer Processing...

Page 17: ...the Warranty Period to the Company at www mackie com support or by calling LOUD technical support at 1 800 898 3211 toll free in the U S and Canada during normal business hours Pacific Time excluding...

Page 18: ...SION SERIAL NUMBER WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFI...

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