Handmade speaker basic lecture �D
　

　　　　　Handmade speaker basic lecture �D

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Masao Ida
　It is a basic lecture for making a handmade speaker.
　From a beginner, please also looking-obtain maniacs and enjoy
　a handmade speaker.
　It was made the English version so that he could also understand
　overseas one.
　　　　　　　　　　　　　　　　　　
　Introduction of the speaker of Mr. Nagaoka design
　it is easy to make 500 from the speaker of a certain Mr. Nagaoka, and an
　effect　is high
　The speaker was packed. It goes into a hand about a plan now.
　A thing can be purchased from the acquisition method. It is related with
　 books
　out of print, and is [ this ].
　Please look at E-speaker service and ask a question.

　

　 (6) The speaker of 20 cm

　About a back load phon

　Kind of CW phon (20cm ) D - 7 -> D-7MkII-> D-7MkIII
　　　　　　　　↓ ↓ ->　D-3MKII->　D-3MKII.1
　　　　　(20cm) ↓　　　 D-70 -> D-77
　　　　　(20cm)　　　　　 D-50 ->D-55 ->D-57 ->D-58 ->D-58ES
　　　　　　　　　　↓
　　　　　(16cm)　　　　　 D-37
　　　　　(10cm)　　　　　 D-100->D-118
　　　　　( 8cm)　　　　　　D-105
　　 D-7 was 20cm2 [ from ] in No. 1. (Dark blue shows from 2)

　After D-50, it has evolved in accordance with progress of a unit.
　Moreover, it was designed by the size of a unit with 20cm, 16cm, 10cm, and 8cm.
　All designs are CW phons. CW phon is the thing of a phon with fixed width.
　There are many masterpieces.



　* Popular 20cmCW phon

　　D-55 - the 2nd place D-70 - the 5th place The D-7II6th
　　　　　　　　　　　　　　　　place D-58 -- the 8th place
　　　


　 Printing books of a back load

　Detailed description of a back load phon is carried by design way (1) and (5).
　Although a design and unit are difficult, and made from a its original work, the
　 most interesting one
　It is a back load phon. Especially maniacs need to refer to a design way.

　Design way (5) becomes manufacture practice section, and has a back load phon
　 mouth lecture.
　Here, the foundation of a back load phon is explained.

　(1) Structure
　
　 With a phon, it is the horn of a musical instrument, and the same language
　 and is the thing of the pipe which spreads gradually.
　
　　　　　　　　


　 Have enclosed immediately near the unit, then, for air, an air room is a narrow
　 place.
　It comes to be pushed in, and since there is no refuge, it becomes very high
　sound pressure.

　The pushed air goes straight on, without escaping horizontally, spreads gradually
　 and is the oscillating version of large area.
　 -- it becomes like

　How is it in a short phon? Although the phon for loud sounds is effective at least
　 5cm
　What has as big a phon for Low sound as 1-5m is needed.
　
　　　　　　　　


　 The back load phon attached the phon to the back of a unit, and it is a phon.
　Full length amounts to 2-4m.
　The loss which does not become sound as important work of a phon is reduced
　 and it strengthens [ sound ].
　They are things.

　If it says simply, an enclosure will be attached, and sound will not be missed
　to the four quarters, but it will push out at the front.
　As a result, sound can be heard to a long distance.
　
　　　　　　　　


　 Although the ideal of a phon is a curved surface, since it cannot manufacture
　 connect of a square shape.
　It is CW phon which it was made thick, it folded up and was made the box type
　(in breadth regularity and height).
　it extends constant - wide -- it is .

　　　　　　　　


　 For a back load phon, the front of a corn is reproduction and the back
　　ordinarily in this way.
　Inside loud sound declines and upper Low sound of efficiency is reproduced.

　Moreover, a unit is a low end if the bottom of Low sound is the unit of
　 (high efficiency).
　It can extend for a flat. FE series of Fostex is high efficiency.
　It comes out and is on the conditions of a back load phon at a unit with
　 low-pass [ high going up and low-pass / insufficient ].
　It carries out exactly.

　 The sound which cannot think Low sound which comes out from one
　 full-range unit comes out.

　The thing which I like can divide for them and hear the Takanaka sound
　and Low sound without using Woofer.
　They are things. It is because Low sound is sound like a natural musical
　 instrument as musically as it.

　Please challenge a back load phon by all means.
　



　 Actual box type CW phon The Takanaka sound is from -> above a unit.
　　Low sound is from -> below a bottom.
　　　　　　　　　　　　　　　　　　　



　(2) How to improve the tone quality effect further

　1. Put Pebble, Gravel, or Sand Pebble into Small Vinyl at Stairs-like Bottom.
　　　It is filled up and covers with cloth, such as felt, on it.

　　　　　　　　　　　　　　　　　　


　2. Only a capacitor ties phon Tweeter

　　　　　　　　　　　　　　　　　　　　　

　
　Connection with Tweeter

　▽ phon super Tweeter FT66H FT96H T96 A-EX is to a
　　 Speaker attachment hole　board.
　　　It attaches. It can do simply in handmade.

　　　　　　　　　　　

　Phon super Tweeter T90A T925A T900A T500A
　Needlessness and handmade may place, a stand is sufficient
　and a board is Fostex.
　There is also a Tweeter stand made from true .

　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　 　　　P30 Tweeter stand of Fostex
　 　
　　　　　　　　　　Connection with △ film capacitor
　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　CS series film capacitor of Fostex

　There is a film capacitor of CT/CS series to 0.33 micro F - 15 micro F.
　　A Nagaoka style uses one capacitor and is connection of right and reverse .
　 　A capacitor uses 0.47 micro F or 0.68 micro F.
　
　For example, it connects with T90A by reverse by 0.47 micro F. If it is this
　 it is satisfactory first.


　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
　
　　　　　　　　　The connection figure of a capacitor









　(3) About 20cm back load phon of recommendation

　The 2th place

　　　　　　　　(1) D-55

　 The developed type of D-50 which carried out thorough strengthening for
　low-pitched sound reinforcement

　The back load phon loved for a long time also in the handmade speaker
　In No. 1, BH moved forward by D-50 and from FE 206��1. the appearance of
　 FE208S -- D-77
　Mr. Nagaoka announces D-55 from one, and looks and tone quality serve as
　 a big hit well.

　If the specialists of a handmade speaker also use FE208E ��, it will be about D55.
　He has recommended. The back load phon after D-55 is the same plan as D-55
　 and is et al.


　SS ES has a design of Mr. Nagaoka. There is no E ��. From here

It is necessary to choose in the idea of the direction
　　　　 which carries out handmade.


　 I recommend D-55 or D-57 to FE208E��. A unit rather than anything
　It is originally near.

　The original unit of D-55 is FE208 supermarket.

　FE208 supermarket Permission input 80W sound pressure 98dB magnet 1821g
　It is magnet 1409g 97dB of FE208E �� permission input 120W sound pressure.

　 The speaker as main
　Since this speaker becomes main, please choose carefully and make it.
　Moreover, to making, it does not come gaily halfway. Since time is also taken
　again
　A scrupulous manufacture plan is required. For example, it is [ what reservation
　 of the place to make is carried out, and ] an age.
　Please consider, a tool, etc.

　For making a good thing, let's spend many hours slowly. Moreover, finish is
　sandpaper and a paint.
　Let's and finish beautifully.

　Joy when the thing which goes satisfactorily is made is joy on heavens.

　 Width of the design which has sense of stability although it is large-sized
　 instantaneous power, speediness, and D range etc.
　It comes out and a big difference is given to a maker speaker. although
　 the room of 12-mat grade is good -- more
　It is used also in the small room.

　Dissatisfaction does not come out with small volume, either, because there
　 is much amount of information and resolution is high.



　 Use five 21mm thick 910×1820mm plywood.

　 　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　Original D-55




　　　 　　
　　　　　　　　　　　　　　　The D-55 front and the side







　The back load phon new appearance of attention!

　(2) D-3MKII.1

　 A design corresponds to the FE208E present by the object for FE208��.

　D-58ES from D-55 -- an angle -- it is large To it and a limited unit
　a design -- by things, a back load uses an expensive unit
　It is a fact that things had become like a premise. For the reason, it is from
　 the problem of an installation place.
　Slimer D-57 was designed.

　Although the maximum is D-58ES and sound is wonderful, of course, it cannot
　 move, if it places.
　Please consider. In D-58ES which I manufactured, a pebble is put into a bottom
　 and it is at one side.
　It is set to 50〜60kg.

　 The 20cm back load phon which can taste neither in 10cm nor 16cm
　It seems to be in the dreadfulness of 底音. Moreover, speakers enough as main
　 are 20cm.
　I consider. Many directions can be made if this back load is made smaller.
　then -- it felt



　Then, the back load phon of an appearance

　 design way [ of the newest / 1 / D-3MKII.] / (5) -- such speaker
　　　　　　　　 things -- there is nothing
　It was alike and was announced.
　I introduce this D-3MKII.1. Moreover, I explain through an old experience.

　It is the appearance of a back load phon new still more.
　　　

　　　　　　　　　　　　 Outside size
　　　　　D-3MKII.1 　　282Wx950Hx430D 　unit mm
　　　　　　D-58ES 　　　444Wx1042Hx565D　 unit mm

　　 Used board material
　　D-3MKII.1 21 x3 sheet 　　　D-58ES 21 x8 sheet
　
　 Use full-range unit
　　D-3MKII.1 FE208E�煤@　　　　 D-58ES FE208ES

　　It became the 20cm back load phon miniaturized like this.
　
　　　　　　　
　　　　　　　　　　　　 　　　　　
　D-3MKII.1
　 This is wonderful.

　 Since it is a little small and miniaturizes even if compared with D-37 in
　 a size, it is in the room.
　It can place from 6 mats and can sound.

　 It is the economical design which makes two from board material 21mm
　 with three plywood. This is two sheets.
　It is because there are comparatively few not carrying out the pile and parts.

　 Although structure is the same as CW phon, as for the feature, is
　 attached aslant.
　They are things. Since Sound Way becomes a curve as a phon closely
　although it seems to be effective
　It is writing an attachment position in assembly work with a pencil at a side
　 board.

　 Like D-58 grade, since it is not large-sized, it is wonderful that an assembly
　is alone possible.
　


　　　　　　　　　　　　　　 An assembly and a sectional view
　　　　　　　　　　　

　　　
　 Assemble an assembly in order from 1 to 22. Since (1) and (5) have slanting
　Sound Way
　A position is entered in the side with a pencil. There is no place where others
　are difficult.

　The portion on the stairs from (15) is constructing a baht correctly. Terminal
　Although it is the position of (10) of the board of (10) in design way (5)
　supposing I make
　A terminal is placed on the left of up (6) of the board of (6).
　It is because this gentleman is convenient for connection of phon Tweeter

　The position of a terminal is entered in the lower plan.
　
　The hole which lets a code pass is vacated for (5).

　 The addition of super Tweeter

　For reproduction, in a high region, Low sound is to near 50Hz to 15kHz grade
　 by measurement of a stereo magazine.
　It is high-level and is maintained. The affinity with FE208E �� is satisfactory.

　If a high region has the addition of super Tweeter, will go up further.
　　　
　 Connection of full-range + Tweeter

　Although it is with this and reverse , there is no sharp decrease. However
　 it is although judged with one's ear.
　When [ this ] simple, the direction of reverse is said to be good.
　
　
　　　　　　　　　　　　　　　　　　The plan of D-3MKII.1









　(3) D-58ES

　 It is the design for FE208ES (limited sale).

　 Since it corresponded to a limited model by D-58, the basic design was
　 designed.
　The depth of an air room was able to be extended 15mm. An air room is 10l
　 and Pipe.
　A cross-section area does not change with 2 204cm.

　 The outside became large [ depth ] 17mm. An assembly blocks a Sound
　　Way portion.
　 it is alike, it constructs and combines as an order
　Since it is large, to ask the help is good.

　To 30Hz, Low sound is high-level and is reproduced. A high region is in
　a flat to 10Kz(es).
　It is the beautiful characteristic of beginning to fall from 12Kz(es).

　　　　　　　　　　

　The front of D-58ES, and the side


　 Use eight 21mm thick 910×1820mm plywood.

　How to raise　quality.

　(1) Put Pebble, Gravel, or Sand Pebble into Small Vinyl at Stairs-like
　 Bottom.
　When it is filled up and cloth, such as felt, is pulled on it, they are increase
　of Low sound, and tone quality.
　An effect is in an effect.

　(2).To Tweeter, it Lets Capacitor Pass for Phon Tweeter, and is Reverse .
　Then, tone quality rises.
　Mr. Nagaoka connects T500A by reverse by the 0.47-micro F capacitor.
　When [ this ] it is, a high region becomes a flat to 20kHz.

　(3). Attach the ring adapter P208.




　　* Look at and pass here in more detail
　　　　　　　and it is a link.
　　　　
　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　 　　　　D-58ES
　　　　　　　　　　　　　　　　　　　　By Masao Ida









　　　Ｉt is F-3000MKIII
　　　　　　　　　　　　　the 3rd place. NessieMKIII
　　　　　　　　　　　　　The greatest ever resonance pipe


　　　　　　　　　　　　　　
　(4) F-3000MKIII NessieMKIII

　Main speaker for the "way ships" of Mr. Nagaoka Only for FE208ES

　The position of 3050mm of quantities before not going into ordinary homes
　 and a unit is 　from a floor.
　Full length of 4150mm of 950mm , and a resonance pipe

　 The object for FE208SS and ES are put on the market and Nessie II
　becomes Nessie　MKIII.
　Change is the structure of Sound Way although it becomes size change by
　board thickness having been set to 18mm.
　Height does not change. It increased 41mm with depth rather than 3000 II.


　Important Nessie MKIII (it is the same as MKII) work accuracy is very high.
　It is required. each portion divided into three -- exactly -- a crevice --
　there is nothing -- smooth
　Woodwork technology with whether advanced with a difficulty it is united
　is required .
　
　All the sizes of each part material are adjusted correctly (less than [ +-0.5mm ])
　 and it is the character type gauge .
　It makes and places two -each 3 three-kind boards (thicker is sufficient
　 as this) at a time.
　The variation in the board thickness of a component is also seen and arranged
　 a gauge board is used, and it is an assembly carefully.
　 It is Kiguchi's joint, checking a trim size using slide calipers.
　The surface of a board is ground carefully and finished. It is also the thickness
　of when hanging paint.
　It takes into consideration and assembles carefully.

　 In order to make it there be no crevice exactly, make each portion divided
　 into three.
　The highest moves the joy when the ability to consider, although it was
　difficult. When sound comes out
　It will be wrapped in the impression which cannot be said not at all.
　　　　　
　 Super Tweeter has optimal T500A. A 0.47-0.68-micro F capacitor is right.

　if the adapter ring P208 is used -- the speed of sound -- it goes out and
　 becomes good

　
　With the timber dealer who has choosing the domestic good China plywood
　and an actual result, and has a cutter
　It is important to request the place which the craftsman of decision has
　 processed.

　　Please use this E-plywood.cut service.
　　　　


　　　　　　　　　　　　　　　　　　　 　　
　　　　　　　　　　　　　　　　　F-3000MKIII NessieMKIII
　　　　　　　　　　　　　　　　　　　　By Mr. Nagaoka





　(5) F-3000MKII NessieMKII

　 F3000, F3000II, F3000 III, and Mr. Nagaoka design Nessie.
　 As for Nessie II, E�� of the present for FE208SS can also respond.

　15mm of board thickness and eight 910×1820mm plywood are used.

　Work accuracy is a speaker to make although it becomes advanced. Also
　as main
　Some people are using it for Surround.

　 Sound is uncanny. A home theater prospers and Nessie is improved
　very much
　again.
　It is. To make personally is more interesting and, of course, a home theater
　is a speaker.
　What had handmade one in the room is made. No, it is in the room about a
　speaker.
　Although it does not know whether to unite, we recommend Nessie to a home
　 theater.

　Full length of 4150mm of 3050mm of Height, and a resonance pipe, resonance
　 frequency of 20Hz


It is the surprising speaker of a common sense blank.


　　　　　　　　　　　　　　　　　　　　　　
　　F-3000MKII Nessie　MKII

　 The characteristic of Nessie (answer of a question of Mr. Nagaoka)

　 As an object for pure audio, the direction of D-58 is a top. The object for
　 VA, Surround
　As business, Nessie is a top. It is hard and D-58 is dynamism and Hi Speed
　moreover, control is effective and does not run recklessly. excessive
　 [ reproduce with ]
　The type of not making sound.

　 Nessie -- enough -- hard -- high speed -- although it is dynamic --
　 control -- the effect
　The touch which sounds cheerfully is in and it also has the DSP-effect in it.
　In F range, D-58 is reproduced for a flat to heavy low-pitched sound. Nessie
　The low-pitched sound of the bottom of low-pass is insufficient at .
　　　　　　　
　 As mentioned above, those who use Nessie as a main speaker are sub
　Woofer.
　is required. however, Nessieー -- rear one of Surround-- if it is use at
　business
　　I think that a Sub Woofer fur is unnecessary. Because, the ingredient of　rear

　It is because it does not enter like a front.


　 quality. -- raising (in the case of 20cm) --

　(1). The addition of super Tweeter and Mr. Nagaoka are 0.47-0.68 micro
　　　　F about T500A.
　It is right-(ing) by the capacitor.

　(2). Attach the ring adapter P208.

　(3). Make a super woofer as a Sub Woofer.

Please look at a basic lecture (7) Sub Woofer fur for details.



　(6)Nessie Made from 10Cm - 16Cm

　Attention : since it is a speaker to make, we recommend you the next Nessie.

　Nessie in 10cm.

　Six - 8 mat grade Nessie Mini
　Use unit FE108E��
　
　Ten - 14 mat grade F2000 Nessie Jr
　Use unit FE168E��
　 Nessie Jr ES version
　The version version for FE168ES
　Use unit FE168E��
　　　　
.....................................................................................................................................

　　　　　　 　　.
　　　　　　 　　 　　　　　　　　　　
　　　　　　　　　　　　Rear canon Mini (8cm) use unit FE83E

　 the Rear Canon Mini -- rear one of Surround -- it is also interesting to
　 also carry out business

　When Nessie Mini is made into a front and it is made the rear
　 rear canon Mini, it is a method ship of a mini.
　It can . Because of 8cm, it is congenial and the rear canon Mini
　has good looks.

　It is a speaker apt to the home theater using the thin shape liquid crystal TV.
　
　　　　　
　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　 　　Nessie Mini (10cm)

　　　　　　　　It can use as a front of the method ship of a mini.




............................................................................................................................................................

　　　　　　　　　　　　 　　　　　　　
　　　　　　　　　　　　　　　　　　　 Nessie JrES (16cm)
　　　　　　　　　　　　　　　　　　　 　　by Masao Ida

　　　　* Look at and pass here and it is a link.


　　　　* an orthodox home theater -- building -- Nessie-- please

　　　　 16cm -- basic lecture (4) 10cm -- basic lecture (3) -- please
　　






　　　　　　　　　　　　　　　　　　　
　　　　　　　　　　　　　　　　　　　　　　　

　　　　　　　　　　　　　　　　 I am waiting for your question.