Adire Audio KIT281 User manual
KIT281 Assembly Instructions 1
KIT281 Assembly Instructions 1
Copyright 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/non-
commercial 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.
KIT281 Instructions
Adire Audio
1111 Elliott Avenue W
Seattle, WA 98119
206-789-2919
http://www.Adireaudio.com
TABLE OF CONTENTS
1. INTRODUCTION................................................................................................................................................2
2. PARTS .....................................................................................................................................................................2
3. NEEDED TOOLS.................................................................................................................................................2
4. SPEAKER ASSEMBLY.....................................................................................................................................3
4.1. MOUNT CROSSOVERS.....................................................................................................................................3
4.2. CONNECT DRIVERS..........................................................................................................................................3
4.3. MOUNT DRIVERS.............................................................................................................................................3
4.4. TEST, TEST, TEST.......................................................................................................................................3
4.5. ENJOY!..............................................................................................................................................................3
5. SYSTEM TROUBLESHOOTING..................................................................................................................4
6. CABINET PLANS................................................................................................................................................5
6.1. DRIVER LAYOUT.............................................................................................................................................5
6.2.SEALED CABINET PLANS...............................................................................................................................7
6.2.1. Cut Lists..................................................................................................................................................7
6.2.2. Drawings................................................................................................................................................8
6.3. VENTED CABINET PLANS.............................................................................................................................11
6.3.1. Cut Lists................................................................................................................................................11
6.3.2. Drawings..............................................................................................................................................12
6.4. TRANSMISSION LINE CABINET PLANS.......................................................................................................13
6.4.1. Cut Lists................................................................................................................................................13
6.4.2. Drawings..............................................................................................................................................14
KIT281 Assembly Instructions 2
KIT281 Assembly Instructions 2
Copyright 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/non-
commercial 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. Introduction
Welcome to Adire Audio’s KIT281 loudspeaker system. The KIT281 is a high-efficiency MTM system
designed for home audio reproduction, as well as home theater applications. It features two Adire Audio
AV8 midwoofers and a single Audax TM025F1 tweeter per side, which yield an in-room system sensitivity
of 92 dB SPL @ 2.83 Vrms.
2. Parts
Your kit should include the following parts:
Part Qty Use
KIT281/W 2KIT281 woofer crossover
KIT281/T 2KIT281 tweeter crossover
AV8 8” video shielded midwoofer 4Woofers
TM025F1 video shielded tweeter 2Tweeters
SBP two-terminal circular input cup 2Single pair input cup
0.25” female FAST-ON connector 16 Terminal connectors
6/32x0.75” black oxide screw 24 Cup/crossover mounting
Small T-nut/socket cap screw set 8Tweetermounting
Large T-nut/socket cap screw set 32 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 the following tools to assemble the KIT281:
-Philips screwdriver
-7/64” allen key
-9/64” allen key
-Pliers
KIT281 Assembly Instructions 3
KIT281 Assembly Instructions 3
Copyright 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/non-
commercial 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. Speaker Assembly
4.1. Mount crossovers
Using the 6/32 black screws, mount the crossovers in the cabinet, making sure the wires can reach from the
input cup to the drivers.
citors down with the masking tape.
4.2. Connect drivers
Connect the drivers to the crossovers. Simply slide the FAST-ON connectors on the speaker tabs. Make
sure the polarities are all correct.
4.3. Mount drivers
Use the smaller T-Nut sets to mount the tweeters in their holes. Use the larger T-Nut sets to mount the
woofers in their holes.
4.4. TEST, TEST, TEST
Connect the connection wires to the drivers. For the Audax tweeter, note that the positive terminal is the
wider terminal! The narrow terminal is negative. 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 section5for
details on tracking down a potential crossover problem.
4.5. Enjoy!
We trust this step is self-explanatory…J
KIT281 Assembly Instructions 4
KIT281 Assembly Instructions 4
Copyright 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/non-
commercial 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.
5. System Troubleshooting
So you encountered a few problems in assembling the speakers. Here are some common tips to check over:
1. Make sure the polarity of the drivers is observed. Reverse connections will create a deep suckout in
the midrange.
2. Make sure the drivers are wired to the outputs of the crossover.
3. Verify that the tweeter polarity is correct: the positive tweeter terminal is the wider terminal.
4. 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.
KIT281 Assembly Instructions 5
KIT281 Assembly Instructions 5
Copyright 1999-2000 Adire Audio. All Rights Reserved. This design is for private, non-retail/non-
commercial 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. Cabinet Plans
We provide three basic cabinet plans for you touse: 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.
6.1. 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.
Table of contents
