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Assembly
Summary
how to build a speaker

DIY
Basics
Cabinet assembly

Theory
Overview
The cabinet
The bass driver
Ultra bass
The amplifier
signal processors

Discussion
Interviews
 
Glossary

The Subwoofer

The subwoofer extends the existing bass below 80-120 Hz. Since our ears have problems in locating low Alcone Sub 12 frequencies, one subwoofer is sufficient in a stereo or home cinema set-up and doesn't need to be positioned in front of the listener. Most subwoofers have a built-in amplifier to allow the individual adjustment of volume and low bass equalisation.

The subwoofer's driver(s) should have a solid basket, a rigid cone and a strong magnet.

Alcone by RCM

Alcone stands for aluminium cone and is a product range by RCM. The drivers feature a rigid cone and show, nevertheless, only a moderate resonance. RCM developed special subwoofer bass drivers that are in line with the latest technological advancement.

The following Alcone subwoofers have a strong magnet ensuring highest possible precision in reproducing bass. The cone is extremely rigid guaranteeing bass without dissipated power.
 

Alcone Subs Type Dimensions
(HxWxD) in cm
 
Output
(continuous/programme)
 
From frequency
(-8 dB)
 
max. SPL (1m)   Ideal room size
Sub 10-60 40 x 32 x 35 60/130 W 35 Hz 103 dB 3-8 m2
  the following Alcone drivers are with silver aluminium sandwich cone
Alcone Subs Sub 10 ASW 48 x 38 x 38 60/120 W 30 Hz 104 dB 6-16 m2
Sub 10 48 x 38 x 38 90/180 W 30 Hz 104 dB 6-16 m2
Sub 20 85 x 35 x 45 120/230 W 27 Hz 110 dB 15-30 m2
Alcone Definition Series for precise bass
Sub 10 Definition 34 x 34 x 34 50/100 W 35 Hz 104 dB 6-16 m2
Sub 20 Definition 68 x 34 x 34 120/230 W 35 Hz 108 dB 12-30 m2
Sub 40 Definition 136 x 34 x 34 300/550 W 35 Hz 116 dB 30-60 m2
*) Subwoofer with absolute control over the cone → best possible sound, somewhat more low bass

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Audaphon

Audaphon tweeter, ribbons and woofer feature an excellent price/performance ratio.
 
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Ciare

Ciare is an Italian producer of chassis. Ciare produces chassis that satisfy different demands: CH 250 is a fullrange with very high efficiency.
 
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Focal

Focal is a well known brand. Focal was founded in 1980 in France. Loudspeakes with W-cone and the reversed dome tweeter is a hallmak of Focal.
 
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Mivoc

Mivoc is well known for DIY kits with very good price performance ratio.
Brand Type Dimensions
(HxWxD) in cm
 
Output
(continuous/programme)
 
From frequency
(-8 dB)
 
max. SPL (1m)   Ideal room size  
Mivoc Eckhorn 18 104 x 111 x 85 depending on module 42 Hz > 127 dB 100-400 m2
Ravemaster Ravemaster Sub 18 100 x 65 x 50 depending on module 30 Hz 112 dB 25-50 m2

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Monacor

Monacor International was founded in 1964 in Bremen, Germany, and has since grown to a company group operating worldwide. Their well-known brands offer an extensive range of products which includes 5,000 items from the most varying areas like PA technology, security technology, car HiFi, speaker technology, stage equipment and DJ equipment. Monacor SPH 380

Monacor's SPH 380/450 TC bass drivers should seriously be considered when high volume is required:
- Subwoofer SPH-380 or
- with two bass drivers Subwoofer SPH-380/2 or
- with 45 cm driver the SPH-450

Brand Type Dimensions
(HxWxD) in cm
 
Output
(continuous/programme)
 
From frequency
(-8 dB)
 
max. SPL (1m)   Ideal room size  
Monacor Subwoofer SPH-380 BR 57 x 42 x 50 180/300 W 28 Hz 114 dB 33-65 m2
Monacor Subwoofer SPH-380/2 BR 122 x 42 x 50 500/1000 W 28 Hz 122 dB 100-180 m2
Monacor SPH-450 BR 61 x 75 x 70 200/400 W 21 Hz 117 dB 50-90 m2

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Peerless

Peerless, Tymphany’s world-renowned brand of transducers, was founded in Denmark in 1926. Peerless quickly became known as one of the foremost producers of speakers for the newly emerging radio market. Soon after with the advent of television, Peerless again led the way in sound quality. For over 80 years, Peerless has been designing and producing market leading components for the loudspeaker industry.
 
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Seas

Seas history starts in 1948. The owner of Radionette, Jan Wessel decided to start making loudspeaker units for his own production of radio sets. Seas is well known for producing speakers of high quality.
 
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Scan Speak

Founded in 1970, Scan-Speak still resides in Videbaek, Denmark. The acoustic engineers adhere to the legendary policy of "Never compromise". Scan-Speak never compromises on the product quality, sound quality or pursuit of perfection in a given application.
 
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Tang Band

In 1996, nestled against the foothills of Taipei City, Tang band Ltd. was born. Tang Band was created with one overriding goal in mind; to make innovative, high quality speaker drivers.
 
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Jim Thiel

THIEL Audio Products Company of Lexington, Kentucky is a privately-held, engineering driven organization that performs research, design, and manufacturing of loudspeakers for the highest quality music and video sound reproduction in the home.
 
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Vifa

Vifa Loudspeakers is a well known and respected name in the audio industry. Like Peerless, Vifa belongs to Tymphany.
 
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Visaton

Visaton is a German loudspeaker manufacturer. With 30 years of experience in the field of acoustics and loudspeaker technology and a future oriented engagement in research and development, Visaton is nowadays a specialised and world wide successfully operating loudspeaker manufacturer.
 
Brand Type Dimensions
(HxWxD) in cm
 
Output
(continuous/programme)
 
From frequency
(-8 dB)
 
max. SPL (1m)   Ideal room size  
Visaton SUB W-20.39 40 x 32 x 43 max. 75 33 Hz 103 dB 6-14 m2
Visaton SUB T 20.39 40 x 32 x 43 max. 120 28 Hz 103 dB 6-14 m2
Visaton SUB T 25.30 40 x 32,4 x 40 max. 200 35 Hz 110 dB 16-35 m2
Visaton SUB T 25.50 45 x 32,4 x 45 max. 200 28 Hz 110 dB 16-35 m2
Visaton SUB T 30.60 52 x 37,5 x 50 max. 300 34 Hz 113 dB 30-60 m2
Visaton SUB TL 30 215 x 56,1 x 56,1 max. 600 19 Hz 113 dB 30-60 m2

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Wavecor

Wavecor is an innovative force in loudspeaker technology. High quality loudspeaker units for industry and personal customers (DIY) - for Hi-Fi stereo, multi media, home theater, pro, car applications, etc. Tweeters, midranges, fullranges, woofers, subwoofers. Evaluation kits. Complete car component sets. Complete OEM speaker system turnkey solutions for the industry.
 
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The Magazine Hobby HiFi

Since this magazine is targeted at the DIY market, every edition features loudspeaker kits, indispensable information for the DIY community.

The Magazine Klang+Ton

This loudspeaker DIY publication has a longstanding tradition. For many decades top-quality kits have been featured and off course the extremely popular Cheap Tricks (CT).
 
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