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M4 LSK DIY Loudspeaker Kit
M4 DIY Kit 

The Loudspeaker Kit M4 Mini Monitor DIY Kit

M4KIT

The Loudspeaker Kit M4 shielded mini monitor DIY Kit is small and easy to drive. This is a fantastic budget speaker for mains or surround use.

Now with Upgraded crossover and magnetic grills.

The Loudspeaker Kit M4 DIY kit is the baby in the baseline range, but don't let its diminuitive size fool you! Engineered to produce a surprising amount of bass from such a small box the M4 DIY loudspeaker kit also has a smooth midrange thanks to the use of a specially designed 4" mid bass driver and a crossover design that eliminates the use of inductors.

But don't just take our word for it, here's what the reviewers at DIYAudio.com had to say about this kit:

"The little 4" two way bookshelf ...delivers an impressive amount of bass down to about 50 Hertz. It's real delight, however, was the superb midrange performance and tonal balance. On a wide range of music they performed really well and were very listenable, female vocalists in particular were a treat to listen to. There is no boominess or muddiness in the sound and they would put many commercially available systems costing a lot more to shame."

The Loudspeaker Kit M4 DIY Kit Instructions      

This speaker has been reviewed on Dan's Data. Read it here.

Pictured left: Pre-built in Gloss Black.  Sold Individually.  Finish not included, kit supplied as flat packed raw MDF.

The M4 efficiency is at the lower end of the spectrum so does need a little bit of power to run well, you definately can't run it from a PC sound card for instance. It ideally suits small to medium size rooms for normal listening levels. The applications is suits are:

  • 5 matching speakers in home cinema applications
  • Effects (rear) speakers in larger home cinema systems
  • Bookshelf speakers for bedroom/office
  • 2 channel PC Audio applications
  • 4 channel PC Audio applications
  • Mini fold-back speakers for studio work

It's fully magnetically shielded and light enough to be mounted on walls, on top of TV's or on a more traditional speaker stand. 5 of these kits produce superb surround sound with perfect timbre matching and provide a home theatre experience that has to be heard to be believed, and when paired with our active subwoofer kit you can be guaranteed to upset the neighbours! Dolby Laboratories themselves strongly recommend using 5 identical speakers as the optimum solution for home theatre.

Construction of the kit is simple and takes around 20 - 30 minutes, no woodworking skills are required and all components come included except for the glue.

Parts list for one M4:

  • 6 piece MDF M4 speaker
  • 1 prebuilt crossover
  • 1 Taiwanese tweeter
  • 1 Taiwanese woofer
  • 1 piece of acoustic stuffing
  • 1 round plastic terminal
  • 1 25mm tuning port
  • Black screws for assembly
  • Assembly instructions

PARAMETER VALUE
Nominal (RMS) Power 50 Watts
Impedance 8 Ohms
Frequency Range 60Hz-20kHz (-3dB)
Sensitivity 85dB 1W@1M
Recommended Amplifier 20W - 80W *
Woofer Material Treated coated paper
Woofer Diameter 104mm
Surround Material Low Loss Rubber
Tweeter Material Mylar
Dimensions 167D x 234H x 145W mm
Weight 2.5 Kg

 

Anechoic Frequency Response of M4 measured at 1M on-axis

Black - On Axis, Red - 30 degrees off axis,  Blue - 60 degrees off axis

Impedance curve of complete M4 (1W input)


*Note - suggested amplifier power ratings are nominal only, there are a wide range of factors which affect the performance and suitability of any speaker/amplifier matchup. Damage to speakers is usually caused by an underpowered amp which is clipping due to being driven too hard. Damage to speaker drivers and kit components caused by overdriving the amplifier or the speaker is not covered by warranties. In general, the M4 kits will suit most commonly available Pro-Logic DD/DTS receivers.

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