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KIT81 Assembly Instructions
1
KIT81 Instructions
Adire Audio 1111 Elliott Avenue West Seattle, WA 98119 206-789-2919 [email protected] http://www.adireaudio.com
TABLE OF CONTENTS
1. 2. 3. 4. 5. INTRODUCTION ................................................................................................................................ 2 PARTS ................................................................................................................................................... 2 NEEDED TOOLS................................................................................................................................. 2 CROSSOVER SCHEMATIC.............................................................................................................. 3 CROSSOVER ASSEMBLY ................................................................................................................ 4 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. 5.7. 5.8. 5.9. 5.10. 5.11. 5.12. 5.13. 6. 7. THE BASICS OF CROSSOVER ASSEMBLY .......................................................................................... 4 SUGGESTED LAYOUT ....................................................................................................................... 5 STRIP INDUCTOR INSULATION ......................................................................................................... 7 MOUNT INDUCTORS......................................................................................................................... 7 MOUNT CAPACITORS ....................................................................................................................... 7 MOUNT RESISTORS .......................................................................................................................... 7 CONNECT COMPONENT LEADS ........................................................................................................ 7 BUILD CONNECTION WIRES............................................................................................................. 8 TEST, TEST, TEST........................................................................................................................ 8 SECURE COMPONENTS ................................................................................................................. 8 SOLDER JOINTS ............................................................................................................................ 8 SECURE INSIDE CABINETS ........................................................................................................... 8 ENJOY! ........................................................................................................................................ 8
SYSTEM TROUBLESHOOTING...................................................................................................... 9 CABINET PLANS .............................................................................................................................. 10 7.1. DRIVER LAYOUT ........................................................................................................................... 10 7.2. SEALED CABINET PLANS ............................................................................................................... 11 7.2.1. Cut Lists................................................................................................................................ 11 7.2.2. Drawings............................................................................................................................... 12 7.3. VENTED CABINET PLANS............................................................................................................... 13 7.3.1. Cut Lists................................................................................................................................ 13 7.3.2. Drawings............................................................................................................................... 14 7.4. TRANSMISSION LINE CABINET PLANS ........................................................................................... 15 7.4.1. Cut Lists................................................................................................................................ 15 7.4.2. Drawings............................................................................................................................... 16
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
1
KIT81 Assembly Instructions
2
1. Introduction
Welcome to Adire Audio's KIT81 loudspeaker system. The KIT81 is a high-performance MT system designed for home audio reproduction, as well as home theater applications. It features one Adire Audio AV8 midwoofer and a single Audax TM025F1 tweeter per side, which yield a system sensitivity of 87 dB SPL @ 2.83 Vrms.
2. Parts
Your kit should include the following parts: Part 4.7 uF 250VDC polypropylene capacitor 5.6 uF 250VDC polypropylene capacitor 5.1 uF 250VDC polypropylene capacitor 12 uF 250VDC polypropylene capacitor 47 uF 250VDC polypropylene capacitor 0.27 mH 16 GA perfect lay air core coil 0.47 mH 16 GA perfect lay air core coil 0.82 mH 16 GA perfect lay air core coil 1.2 mH 16 GA perfect lay air core coil 3 ohm 10W sandcast resistor 2.4 ohm 10W sandcast resistor 4.3 ohm 10W sandcast resistor 11 ohm 10W sandcast resistor AV8 8" video shielded midwoofer TM025F1 video shielded tweeter SBP two-terminal circular input cup 14GA/2C 14GA twin conductor cable 0.25" female FAST-ON connector 21cm long wire tie wrap Small T-nut/socket cap screw set Large T-nut/socket cap screw set Qty 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 10 12 30 8 16 Use C1 in the tweeter crossover C2 in the tweeter crossover C3 in the tweeter crossover C4 in the woofer crossover C5 in the woofer crossover L1 in the tweeter crossover L2 in the tweeter crossover L3 in the woofer crossover L4 in the woofer crossover R1 in the tweeter crossover R2 in the tweeter crossover R3 in the woofer crossover R4 in the woofer crossover Woofers Tweeters Single pair input cup Internal wiring Terminal connectors Crossover assembly Tweeter mounting Woofer mounting
If any parts are missing, please contact the factory as soon as possible, and we'll correct the shortage.
3. Needed Tools
You'll need to supply the following parts and tools to assemble the KIT81: Mounting board (hardboard, plywood, or any other material suitable for crossover mounting) Electrical tape Masking tape Pliers Razor blade or sandpaper Wire cutters Soldering iron Solder
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
2
3
3
C1 4.7 uF 3 ohm C3 + AMP IN L1 0.27 mH/16GA L2 0.47 mH/16GA 5.6 uF
C2
R1
5.1 uF + R2 2.4 ohm AVF1
R4 L3 0.82 mH/16GA L4
11 ohm
1.2 mH/16GA 12 uF 47 uF C4 C5 + AV8 R3 4.3 ohm -
4. Crossover Schematic
CONSTRUCTION NOTES
ALL CAPS ARE SOLEN PA POLYPROPYLENE OR BETTER ALL INDUCTORS ARE SOLEN PERFECT LAY AIR CORE OR BETTER ALL RESISTORS ARE 10W SANDCAST UNITS OR BETTER DO NOT CHANGE INDUCTOR GAUGE NOTE TWEETER POLARITY IS REVERSED
LEGEND: Black solid lines are viewable edges Grey lines are normally hidden from view Red lines are for dimensions Blue lines are for construction/reference Green lines are text/labels
Copyright (C) 1999-2001 Adire Audio. All Rights Reserved. Commercial use or reproduction of this design without the express written consent of Adire Audio is strictly prohibited, and punishable by law.
TITLE
KIT81 CROSSOVER
SIZE CAGE CODE DWG NO
REV
A
SCALE
N/A N/A
DRAWN BY
1200-0030
DCW
SHEET
B
1 of 1
Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
KIT81 Assembly Instructions
KIT81 Assembly Instructions
KIT81 Assembly Instructions
4
5. Crossover Assembly
5.1. The Basics of Crossover Assembly
Crossover assembly is one of the most critical aspects of loudspeaker construction. A poorly built crossover can seriously degrade the sonic performance of a kit. Additionally, poor construction can lead to early failure of components! The key to good crossover assembly is to go slow. Take your time. Best to double-check every connection and step twice before proceeding. Remember, each part of a crossover interfaces with others. Mess up one connection, and that will ripple through the entire crossover. We recommend that you start by reading over these instructions a few times prior to actual construction. This way, you'll know what comes when, and will have a somewhat "intuitive" feel for the process. Also, familiarize yourself with the crossover schematic as best as possible! That way, when you're hooking parts up, you'll recognize bad connections before they become permanent. Inductors don't go in series with the tweeter; caps don't go in series with the woofer, and other basics. Get a feel for the flow of the crossover, and your assembly will go MUCH smoother. That said, let's get into the basics of crossover assembly... Crossover assembly is the process of building the electrical network that goes between the amplifier and the driver(s). As such, it's VERY similar to other electrical kit assembly. If you've soldered parts together before, and can read a schematic, you'll have no problems assembling this kit. On the other hand, if you've never soldered, or don't understand schematics, you should the time to learn some basics of soldering, and how to read a schematic, or find a friend with some electronics experience, and you'll be set. We recommend any of the "Intro to Electronics" books at Radio Shack, or other electronics/hobbyist stores. Anyway, on to the assembly!
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
4
KIT81 Assembly Instructions
5
5.2.
Suggested Layout
C1 + AMP
C2 R1 - F1
R2 L2 L1
C3 - AMP + F1
R4 + AMP
L4 L3
+ AV8
C5
C4 R3 - AMP - AV8
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
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KIT81 Assembly Instructions
6
You can actually print out the layout, tape it to some ¼" thick hardboard or plywood, and use it as a drill/wiring/placement guide. If this document is printed out on US Letter or A-4 size paper (roughly 8.5" wide by 11" long), then the above layouts are in real 1:1 scale, matched for the actual component sizes. Each crossover board will be 4" wide by 6" long, and should easily fit through the woofer cutouts. As far as the crossover layout goes, we use the following marking conventions: · · · · · · · · · Crosshatch is for inductors Standing inductors are labeled with a "V"; i.e.: L2V indicates L2 is standing Alternating line/dashes are for capacitors Hexagons are for resistors Blue lines indicate electrical connections Red lines indicate tie wrap locations Red circles are holes bored for the tie wraps Tie wraps go through the center of both horizontal and vertical inductors Gray lines are for board edges.
For the longer electrical connections, we recommend using either the extra inductor lead, or some of the supplied 14AWG wire. Alternatively, you can use some 16AWG or larger wire that you may have laying around. You may want to make the electrical connections on the back of the board, rather than the front. This will provide some more mechanical reinforcement for the components, but does require additional drilling of the mounting board. Simply drill a hole at the location of each component lead, and push/pull the leads through (this does make a neater looking crossover, but be careful when screwing the crossover down, so that you don't short out a hidden electrical connection!). Note that the driver and amplifier polarities are spelled out; follow them!
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
6
KIT81 Assembly Instructions
7
5.3.
Strip Inductor Insulation
The first thing you'll need to do is strip all of the varnish insulation off the inductor leads. This is what the razor blade or sandpaper is for. If you're using the razor blade, you'll need to scrape the insulation. Hold the razor blade perpendicular to the inductor lead, and scrape. Rotate the lead a bit, and scrape. Repeat as necessary. For the sandpaper, you're best bet is to wrap a small piece of paper around the inductor lead and twist. This will allow you to sand off the insulation in no time!
5.4.
Mount Inductors
Reading Inductor Values: All inductors are labeled with their value, such as 1.2 mH. All are 16 gauge units, so simply pay attention to the value on the inductor label. Now mount the inductors. All the locations are shown in section 5.2. Note that we've labeled two of the inductors with a `V'. This means to stand the inductor up on end (like a standing tire or inner tube). Pull the leads through the mounting board. Give them a quick bend to hold the inductors down. Now use the masking tape to temporarily hold the inductors in place. Go ahead and be liberal with it, and don't worry about a perfect mount; we'll replace the tape with the wire ties later.
5.5.
Mount Capacitors
Reading Capacitor Values: All capacitors are marked with their nominal capacitance, such as "6.2 uF". All capacitors are 250VDC units, so, don't worry about matching up the voltage rating. Also, note that all the capacitors you received are non-polar. You don't have to worry about connecting the capacitor "backwards", like you do with polarized capacitors. Lay out the capacitors on the board. As with the inductors, pull the leads through the mounting board then tape the capacitors down with the masking tape.
5.6.
Mount Resistors
Reading Resistor Values: Resistors are labeled WWSQP10JXRY, where XRY is the resistor value. X represents the whole ohm value, and Y the fractional ohm value. For example, a 7.5 ohm resistor would be 7R5, while an 11 ohm resistor would be 11R. The "10J" represents the power handling; all resistors are rated for 10W, so as with the capacitors, don't worry about searching the kit for different power ratings on the resistors. Lastly, put the resistors on the board. Pull the leads through, and tape down the resistors with the masking tape.
5.7.
Connect Component Leads
Using the pliers, twist the component leads together as needed. You should be able to have all the leads contact each other as needed. No extra wire is necessary. Once each connection is made, give it a quick wrap in electrical tape, to avoid shorting out during the testing phase.
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
7
KIT81 Assembly Instructions
8
5.8.
Build Connection Wires
Now we'll build the connection wires. For this step, you'll need to use the wire cutters and the supplied internal cable and FAST-ON connectors. For each speaker, you'll need two 12" long pieces and one 36" piece. Use the 12" pieces to connect the drivers to the crossovers, and the 36" long piece to connect the input cup to the crossovers. Now strip ~0.5" of insulation off all ends of the cable. One end of each cable will ultimately be soldered to the crossover. The other ends we're going to attach to the Twist the raw ends of the cable on to the crossover inputs and outputs. Cover in electrical tape (for protection while testing the crossover).
5.9.
TEST, TEST, TEST
Connect the connection wires to the drivers. For the tweeter, the wide terminal is the positive side; the narrow terminal is the negative side. Now mount the crossovers in the cabinets; lay them down on any suitable brace, or strap them to the wall of the cabinet with masking or duct tape. Mount the drivers into the cabinets. Now connect the crossover input wires to the terminal cup. Connect the terminal cup to your amp, and TURN THE VOLUME ALL THE WAY DOWN. Start playing some music. Turn the volume up VERY slowly. Put your ear in front of the tweeter, to make sure no bass is coming from it. Likewise, listen to EACH woofer to make sure no really high frequencies are coming from them. SLOWLY increase the volume a bit more. Listen to the soundstage, frequency response, and general timbre of the speaker. If all sounds OK, then continue on to the next step. Otherwise, see section 6 for details on tracking down a potential crossover problem.
5.10. Secure Components
Now comes the fun part: strapping down all the components! Start by removing the crossovers from the speaker. Then use the supplied wire ties to strap the crossover components tight to the mounting board. Use one wire tie for each capacitor and resistor. Use two wire ties for the inductors, as they're pretty heavy. Go ahead and pull fairly tight; you don't want the components moving around. Don't pull so tight as to crush the capacitors, though that can damage the components. Just pull the ties tight enough that it takes a good amount of effort to get the components to move.
5.11. Solder Joints
Unwrap the electrical-taped joints. Solder each joint, and inspect for cold solder joints. Then re-wrap each joint with electrical tape.
5.12. Secure Inside Cabinets
Mount the crossovers inside the cabinets. Typically a pair of drywall screws are used to hold the crossover to a brace or side panel. Make sure you do NOT put a screw through a wire, or through the center of an inductor!
5.13. Enjoy!
We trust this step is self-explanatory...J KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited. 8
KIT81 Assembly Instructions
9
6. System Troubleshooting
So you encountered a few problems in testing the crossover. Here are some common tips to check over: 1. 2. 3. 4. 5. 6. 7. 8. Double-check all component values. The resistors all look the same, and can only be differentiated by the markings! Likewise, check the capacitors and inductors. Make sure the polarity of the drivers is observed. Reverse connections will create a deep suck-out in the midrange. Triple-check all component values. Make sure all joints are electrically isolated from each other. Make sure you've connected the positive tweeter output lead to the wide terminal of the tweeter. Make sure the drivers are wired to the outputs of the crossover Quadruple-check all component values. Contact us! We try to answer all questions within one business day. You can reach us at [email protected], phone at 206-595-3524, or FAX us at 630-839-6192.
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
9
KIT81 Assembly Instructions
10
7. Cabinet Plans
We provide three basic cabinet plans for you to consider: a sealed box, a vented box, and a transmission line box. Also provided is the basic driver layout, if you decide to build your own box design.
7.1.
Driver Layout
Note that this layout is what we designed around. Keep the baffle width the same as shown here, and the driver locations the same with respect to the upper right hand corner, and you can rest assured that the crossover will function fine. There's really no reason to change the XO if the baffle is longer, or the box alignment changes; those effects will only make a difference in the sub-200 Hz range, where the crossover has no impact.
CONSTRUCTION NOTES
R1 in
3 in
All dimensions in inches Maintain baffle layout with respect to top edge for proper crossover operation One channel shown; mirror image other channel Minimum baffle length is 14 inches; maximum is not defined
Copyright (C) 1999-2000 Adire Audio. All Rights Reserved. Commercial use or reproduction of this design without the express written consent of Adire Audio is strictly prohibited, and punishable by law.
TITLE LEGEND: Black solid lines are viewable edges Grey lines are normally hidden from view Red lines are for dimensions Blue lines are for construction/reference Green lines are text/labels SIZE CAGE CODE DWG NO
1.5 in 9 in
4.5 in
R3 .5
in
6 in
2.5 in
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
SCALE
A
N/A
KIT81/KIT81M BAFFLE LAYOUT
N/A
DRAWN BY
1200-0032
REV
DCW
SHEET
1 of 1
-
10
KIT81 Assembly Instructions
11
7.2.
Sealed Cabinet Plans
The Sealed Cabinet KIT81 is a net 14 liters, stuffed with 8 ounces of polyfill. This alignment is designed to provide bass extension to 67 Hz anechoic, with a system Qtc of 0.8. The result is a slight bump in the midbass, which is recommended for limited-bandwidth systems. The higher-Qtc value, in combination with the 67 Hz anechoic extension, will yield typical in-room extension into the 40 Hz range. Maximum in-room SPL (driven with 100W) will be in excess of 105 dB SPL (at 1 meter) from 60 Hz and up, which makes this system well suited for satellites in a home theater applications. In addition, the system will handle 100W continuously above 80 Hz, the typical crossover point for home theater applications.
7.2.1.
Cut Lists Panel cuts
USE Front and back Top and bottom Sides Internal brace
7.2.1.1.
QTY 2 2 2 1 SIZE 14" x 9" 9" x 10.5" 12.5" x 10.5" 7.5" x 10.5"
7.2.1.2.
QTY 1 1 1 SIZE 7" diameter 2" diameter 4" diameter
Hole/baffle cuts
USE Midwoofer cutout; cut in front panel Tweeter cutout; cut in front panel Internal air flow; cut in internal brace
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
11
12
12
3.25 in 3.25 in 3.25 in 2 in 6 in 8.5 in 7 in 5.5 in 8.5 in 7.25 in
.5 R3 in
14 in
10.5 in
FRONT VIEW
KIT81 Assembly Instructions
SIDE VIEW
Drawings
CONSTRUCTION NOTES
7.2.2.
Cabinet is 9" wide, 12" deep, 14" high (external dimensions) Cabinet constructed of 3/4" thick MDF stock or better Drivers are not rabbeted in Cabinet assumes 8 ounces of stuffing for optimal performance Internal brace is perforated with a single 4"d hole
TITLE LEGEND: Black solid lines are viewable edges Grey lines are normally hidden from view Red lines are for dimensions Blue lines are for construction/reference Green lines are text/labels
Copyright (C) 1999-2000 Adire Audio. All Rights Reserved. Commercial use or reproduction of this design without the express written consent of Adire Audio is strictly prohibited, and punishable by law.
KIT81/KIT81M Sealed Cabinet
SIZE CAGE CODE DWG NO
REV
A
SCALE
N/A N/A
DRAWN BY
1200-0031
DCW
SHEET
1 of 1
KIT81 Assembly Instructions
R2
in
in R1
BRACE
1 0 . 5
Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
2.5 in 3.75 in
7
3.75 in
.
5
4 in 7.5 in
12 in
4.5 in
9 in 3 in 1.5 in
KIT81 Assembly Instructions
13
7.3.
Vented Cabinet Plans
The Vented Cabinet KIT81 is a net 35 liters, tuned to 32.5 Hz (2"ID by 4.75"L vent), and stuffed with 16 ounces of polyfill (8 ounces behind the midwoofer, with the remainder in the lowest chamber of the cabinet, below the vent). This alignment is designed to provide bass extension to 42 Hz. The system will approximate a Q=0.707 second order response down to 26 Hz (fit within ±1 dB). This low-Q response, in combination with the 42 Hz anechoic extension, will yield typical in-room extension into the 35 Hz range. Maximum in-room SPL (driven with 100W) will be in excess of 105 dB SPL (at 1 meter) from 28 Hz and up, which makes this system well-suited for wide-band audio applications
7.3.1.
Cut Lists Panel cuts
USE Front and back Top and bottom Sides Horizontal internal brace
7.3.1.1.
QTY 2 2 2 3 SIZE 31" x 9" 9" x 10.5" 29.5" x 10.5" 7.5" x 10.5"
7.3.1.2.
QTY 1 1 6 1 SIZE 7" diameter 2" diameter 4" diameter 2" diameter
Hole/baffle cuts
USE Midwoofer cutout; cut in front panel Tweeter cutout; cut in front panel Internal air flow; two cut in each horizontal brace Vent mounting
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
13
14
14
9 in 1.5 in 2.75 in 3.25 in 4.5 in 3 in 2 in
R1 in
2.5 in 6 in 10.5 in 5 in 4 in 4 in 4 in
in R2
3.25 in
in R2
.5 R3
in
2.75 in
9 in
31 in
2 in
7.25 in
7.25 in
31 in
13.5 in
R1 .5 in
8.5 in
FRONT VIEW
SIDE VIEW
8.5 in
BAFFLE DETAIL
KIT81 Assembly Instructions
Drawings
13.5 in
C
O
N
S
T
R
U
C
T
7.3.2.
Cabinets constructed of 3/4" thick stock (MDF or better) Cabinets are 31" tall, 9" wide, 12" deep external Driver rabbets are not required Tune with a 2"d by 4.75" long vent Flare vent with a 1/2" 45 degree chamfer
LEGEND: N N O I Black solid lines are viewable edges Grey lines are normally hidden from view Red lines are for dimensions Blue lines are for construction/reference Green lines are text/labels
Copyright (C) 1999-2000 Adire Audio. All Rights Reserved. Commercial use or reproduction of this design without the express written consent of Adire Audio is strictly prohibited, and punishable by law.
KIT81 VENTED CABINET
SIZE CAGE CODE DWG NO
O
T
E
S
A
SCALE
N/A N/A
DRAWN BY
1200-0033
DCW
SHEET
REV
1 of 1
KIT81 Assembly Instructions
4 in
10.5 in
4 in
7.5 in
4 in
.5 R1
in
9 in
BRACES
5 3. R
in
Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
8.25 in 8.25 in 7 in 6 in
R1 in
2.5 in 4.5 in 1.5 in
R1 in
9 in 3 in 3.75 in 3.75 in 7.5 in
4 in
12 in 4 in 4.75 in
4 in
R 1 in
KIT81 Assembly Instructions
15
7.4.
Transmission Line Cabinet Plans
The Transmission Line Cabinet KIT81 is a net 76" long line, tapered from 4.5" width at the top to 3" width at the terminus. This results in a line tuning 44 Hz. The line is stuffed with 16 ounces of polyfill in the 4.5" width section, 10 ounces of polyfill in the middle 3.25" wide section, and 6 ounces of polyfill in the front 3" wide section. This alignment is designed to provide anechoic response to 40 Hz, with typical in-room response down to 30 Hz. Maximum SPL (driven with 100W) will be in excess of 105 dB SPL (at 1 meter) from 38 Hz and up, which makes this system well-suited for most home audio applications. In addition, the system will handle 100W continuously from 45 Hz and up, resulting in linear operation over 95% of the audible bandwidth.
7.4.1.
Cut Lists Panel cuts
USE Front and back Top and bottom Sides Horizontal front brace Rear line vertical divider Front line vertical divider
7.4.1.1.
QTY 2 2 2 1 1 1 SIZE 38" x 9" 9" x 12.5" 36.5" x 12.5" 7.5" x 7.25" 29.25" x 7.5" 20.75" x 7.5"
7.4.1.2.
QTY 1 1 1 SIZE 7" diameter 2" diameter 7.5" x 3.25"
Hole/baffle cuts
USE Midwoofer cutout; cut in front panel Tweeter cutout; cut in front panel Line terminus; cut in front panel
KIT81 Assembly Instructions Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
15
16
16
2.5 in 2 in 12.25 in 6 in 12.25 in 3.75 in
R3 .5 in
23.5 in
29.5 in
FRONT LINE DIVIDER
20.75 in
3.25 in
3.5 in
KIT81 Assembly Instructions
Drawings
FRONT VIEW
3.25 in
SIDE VIEW
7.25 in
REAR LINE DIVIDER
3.5 in 3 in
HORIZONTAL BRACE
C
O
N
S
T
R
U
C
T
7.4.2.
Cabinets constructed of 3/4" thick stock (MDF or better) Cabinets are 31" tall, 9" wide, 12" deep external Driver rabbets are not required Stuff with 32 ounces of polyfill throughout line
LEGEND: N N O I Black solid lines are viewable edges Grey lines are normally hidden from view Red lines are for dimensions Blue lines are for construction/reference Green lines are text/labels
Copyright (C) 1999-2000 Adire Audio. All Rights Reserved. Commercial use or reproduction of this design without the express written consent of Adire Audio is strictly prohibited, and punishable by law.
KIT81 TRANSMISSION LINE CABINET
SIZE CAGE CODE DWG NO
O
T
E
S
A
SCALE
N/A N/A
DRAWN BY
1200-0034
DCW
SHEET
REV
1 of 1
Copyright © 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/noncommercial use only. Any use of this design for profit, in any way shape or form, without the express written consent of Adire Audio is strictly prohibited.
7 in 29.25 in 2.75 in 38 in 29.25 in 20.75 in 7.5 in 7.5 in 7.5 in 4.5 in 14 in 7.25 in 4.5 in 1.5 in
R1 in
KIT81 Assembly Instructions
7.5 in
9 in 3 in