Monoprice 41841 Manuel utilisateur

Indoor/Outdoor Weather Resistant

70V/100V/8-Ohm Pendant Speaker

P/N 41841, 41842, 41843

User's Manual

SAFETY WARNINGS AND GUIDELINES

Please read this entire manual before using this device,

paying extra attention to these safety warnings and

guidelines. Please keep this manual in a safe place for future

reference.

•Turn off and unplug all equipment prior to making

electrical connections, including speaker wire

connections.

•Reduce the volume level prior to making any change

to the audio input source, e.g., changing radio stations

or changing CDs.

•When using this speaker as part of a constant voltage

speaker system, ensure that the total power settings

of the connected speakers is no more than 80% of

the RMS output power of the amplifier.

•If using this speaker as part of a constant voltage

speaker system, do not set the tap dial to the 8Ω

position. Doing so can cause damage to the speaker

and/or the amplifier.

•Most speaker damage is caused by clipping, which is

heard as distortion. If you hear distortion, reduce the

volume level until the audio is no longer distorted.

•Take care to ensure that the speaker wire connections

are properly polarized. Inverted polarization can result

in unnatural or attenuated sound, especially in the

bass frequencies.

•If installing this speaker outdoors, outdoor rated

speaker wire must be used.

•Do not use chemical cleaners or solvents to clean this

speaker. Use only a soft cloth moistened with warm

water.

INTRODUCTION

Thank you for purchasing this Indoor/Outdoor Weather

Resistant Pendant Speaker. This speaker features a built-in

step-down transformer, allowing it to be used as part of a

70V or 100V constant voltage speaker array. It also features a

standard 8-ohm tap, allowing it to be used with a standard

power amplifier. It has an IP66 weather resistant rating,

allowing it to be used outdoors in all weather conditions

and near pool areas. Hardware for suspending the speaker is

included.

FEATURES

•4" (41841), 5.25" (41842), or 6.5" (41843) polypropylene

woofer

•0.75" (41841) or 1" (41842 and 41843) silk dome tweeter

•Four 70V and four 100V transformer taps, as well as

NC and 8Ω taps

•20 watts (41841), 30 watts (41842), or 40 watts (41843)

maximum RMS power capacity in an 8Ω speaker

system

•IP66 weather resistant rating

CUSTOMER SERVICE

The Monoprice Customer Service department is dedicated

to ensuring that your ordering, purchasing, and delivery

experience is second to none. If you have any problem with

your order, please give us an opportunity to make it right.

You can contact a Monoprice Customer Service

representative through the Live Chat link on our website

www.monoprice.com or via email at

support@monoprice.com. Check the website for support

times and links.

PACKAGE CONTENTS

Please take an inventory of the package contents to ensure

you have all the items listed below. If anything is missing or

damaged, please contact Monoprice Customer Service for a

replacement.

1x Pendant Speaker

1x Top Cover

1x Eye Bolt and Nut

1x Hanging Cable

2x Carabiners

2x Screws

1x Wire Bracket

1x User's Manual

CONSTANT VOLTAGE VS 8-OHM

SPEAKER SYSTEMS

A constant voltage speaker system differs from a traditional

8-ohm speaker system in that it uses a step-up transformer

at the audio source to raise the voltage and lower the

current on the transmission line. At the speaker end, a step-

down transformer converts the signal back to a normal

speaker level voltage. This reduces power loss during

transmission, which allows for the use of longer speaker wire

runs using smaller gauge wire.

Additionally, a constant voltage speaker system allows for

the use of multiple speakers on each channel, without the

need for complicated impedance calculations and

configurations. In a constant voltage system, all speakers on

a given channel are connected in parallel and the

complicated impedance calculations are replaced by simple

wattage calculations.

For example, if you want to connect two speakers per

channel in a traditional 8-ohm speaker system, you must

either connect them in series, which results in an overall 16-

ohm impedance, or in parallel, which results in an overall 4-

ohm impedance. In the first case, the 16-ohms impedance

effectively halves the output power of your amplifier,

resulting in lower overall volume levels. In the latter case,

the 4-ohms impedance means that your amplifier will have

to work harder and must be rated as stable at 4 ohms.

Adding a third speaker to the mix would complicate it

further, producing either a 24-ohm or 2.67-ohm overall

impedance. Note that very few amplifiers are stable under 2-

ohm loads, so that is usually not an option.

On the other hand, with a constant voltage system, you

consider first the RMS output wattage of the amplifier. This

should be reduced by 20% to compensate for insertion loss.

For example, if using a 100-watt amplifier, the total load

from speakers should not exceed 80 watts.

Each individual speaker on a given channel is set to a value

such that the total does not exceed the rated power, less

20%. You do not need to worry about making the total as

close as possible to the limit; just ensure that the total does

not exceed the limit.

If all speakers are set to the same wattage value, they will all

have the same volume level. If one speaker is set to a higher

wattage value, it will be louder than the others, while a

speaker set to a smaller value will be quieter than the others.

This allows you to compensate for the environment in which

the speaker is placed. For example, a speaker placed outside

would need to be louder than a speaker placed in a small

room.

SPEAKER WIRING

Most constant voltage speaker installations will consist of

multiple speakers per channel, with all speakers connected

in parallel, as shown in the diagrams below.

To wire speakers in parallel, connect the first speaker to the

amplifier as normal. Connect the positive terminal on the

first speaker to the positive terminal of the second speaker,

and the negative terminal on the first speaker to the

negative terminal on the second. Repeat for each additional

speaker in the array.

For the 4" (41841) model, connect the output speaker wires

to the same terminal as the input wires, as shown in the

diagram below.

For the 5.25" (41842) and 6.5" (41843) models, an additional

terminal is provided for connecting the output wires to the

next speaker in the array, as shown in the diagram below.

INSTALLATION

These installation instructions assume the use of a 70V or

100V constant voltage amplifier. The term "input wire" refers

to the speaker wire from the amplifier or the previous

speaker in the array (aka upstream speaker) to the next

speaker in the array (aka downstream speaker). The term

"output wire" refers to the speaker wire from the upstream

speaker to the next downstream speaker.

For standard 8Ω speaker installations, the physical

connections and installation are the same, but the

complications of impedance calculations mean that arrays

are realistically limited to 2 speakers for simple installations

or require complex speaker interconnections using both

parallel and serial connections to achieve a usable

impedance for most amplifiers.

Use outdoor rated speaker wire if installing this speaker

outdoors. Speaker wire is available separately.

Before making each speaker wire connection, strip about

1/4" insulation from each end of each conductor, then twist

the strands to prevent stray strands from causing a short.

1. Power off and unplug all equipment to be connected.

2. Determine how many speakers will be in the left and

right channel speaker arrays. If the number of

speakers is different for each channel, the volume

level of each channel may be different. For best

results, use the same number of speakers on each

channel.

3. Determine the RMS (not peak) output power of your

amplifier, then multiply that value by 0.8. This is the

Maximum Wattage Value (MWV) for each speaker

array.

For example, if the RMS output power of your amplifier is

100 watts, the MWV of each array is 80 watts. (100 x 0.8 =

80).

4. Divide the MWV of each speaker array by the number

of speakers in the array to determine the maximum

wattage setting (MWS) for each speaker in the array.

For example, if the MWV of each speaker array is 80 watts

and each array has 5 speakers, the MWS for each speaker is

16 (80 / 5 = 16).

5. Using speaker wire of the appropriate lengths, feed

the input and output wires through the hole in the

Speaker Cover.

6. Connect the negative conductor of the input and

output wires to the negative terminal on the Speaker,

then connect the positive conductor of the input and

output wires to the positive terminal on the Speaker.

7. Place the included Buckle Bracket over the wires,

then secure it in place using the two included Screws.

Gently tug on each wire to ensure that pressure is not

applied to the speaker terminals.

8. Using a small, flat-blade screwdriver, turn the tap dial

to a wattage value that is less than the MWS

calculated in step 4 above. Use either the 70V or 100V

value, depending on the output voltage by your

amplifier.

For example, using the values in the previous examples and

using the 41843 6.5" model, set the tap dial to the 10W

position, which is the 3rd position for 70V systems or 2nd

position for 100V systems.

9. Attach the Speaker Cover to the speaker, then fasten

the included Eye Bolt to the Speaker Cover and

Speaker.

10. Feed the Hanging Cable through the Eye Bolt on the

Speaker, then wrap it around the pole or through the

eye bolt where the Speaker will be suspended. Use

one or both of the included Carabiners to secure each

end of the Hanging Cable together.

11. Gently release the speaker to verify that it is securely

suspended. Gently pull down to ensure the

suspension is secure, while grasping each side of the

speaker to prevent it from dropping or falling.

12. Repeat steps 5-11 for each speaker in the right and left

channel arrays.

13. Connect the positive and negative conductors on the

speaker wire from the first speaker in the left channel

array to the left channel speaker terminals on the

amplifier, then repeat for the right channel speaker

wire.

14. Set the volume level on your amplifier to the

minimum setting.

15. Plug in and power on your amplifier, then start audio

playback from an audio source. Slowly increase the

volume level until the volume is at a comfortable

listening level.

16. Check each speaker in the left and right channel

speaker arrays to verify that audio can be heard and

that the relative volume levels are about the same.

Congratulations, your constant voltage speaker system is

installed and ready for use!

SPECIFICATIONS

Model

41841

Woofer

4" polypropylene cone

Tweeter

0.75" silk dome

Maximum RMS Power

20 watts

Frequency Response

120Hz ~ 20kHz

Nominal Impedance

8Ω

Sensitivity (1m/1W)

83dB

70V Taps

1.25W, 2.5W, 5W, 10W, NC, 8Ω

100V Taps

2.5W, 5W, 10W, 20W, NC, 8Ω

IP Level

IP66

Dimensions

ø5.4" x 7.5" (ø138 x 190 mm)

Model

41842

Woofer

5.25" polypropylene cone

Tweeter

1" silk dome

Maximum RMS Power

30 watts

Frequency Response

110Hz ~ 20kHz

Nominal Impedance

8Ω

Sensitivity (1m/1W)

84dB

70V Taps

1.87W, 3.75W, 7.5W, 15W, NC,

8Ω

100V Taps

3.75W, 7.5W, 15W, 30W, NC, 8Ω

IP Level

IP66

Dimensions

ø6.7" x 9.4" (ø170 x 240 mm)

Model

41843

Woofer

6.5" polypropylene cone

Tweeter

0.75" silk dome

Maximum RMS Power

40 watts

Frequency Response

100Hz ~ 20kHz

Nominal Impedance

8Ω

Sensitivity (1m/1W)

85dB

70V Taps

2.5W, 5W, 10W, 20W NC, 8Ω

100V Taps

5W, 10W, 20W, 40W, NC, 8Ω

IP Level

IP66

Dimensions

ø8.2" x 11.0" (ø208 x 280 mm)

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