Musical Heart Instruments Evidence Tower MM07A User manual

1. Dear Music Lover,
Owner's Manual
mhi
MM07A / GB
musical heart instruments
Speaker System Evidence Tower Gloss Black
Thank you for purchasing mhi Evidence Tower, a high performance and high quality speaker system.
The unique features of this product provide clear imaging and smooth high definition sound. Each system
incorporates wide range high sensitivity woofers (up to 10k H ), a pure aluminum true ribbon tweeter (up to
120k H ) and AAC (Accurate Alignment Calibration spike bolts to produce true-to-life and accurate sound.
We are confident that once you listen to these systems you will hear their strengths. The sound is our Evidence.
2. Important Symbols
Fill with gravel ( clean and dried , not pebbles)
from bottom of the cabinet. 6 to 7 Kg (13 to 15 Lbs.)
Use food wrap film to protect from damage & dust.
Food
Wrap
Film
3. Speaker System Assembly Procedure
Original cloth
protection
uncovered
this side
End Pad Top
Top of
Cabinet
Stabilize & Absorb Vibration
*Make your system Earthquake-proof
www.musicalheartinstruments.net
page 1
STEP 2-1
Hint / Tip
ecommend
Wrong
Do not
Caution
Warning Need Assistance
DO NOT OVER TIGHTEN
Screw down to
the bottom of the cabinet
STEP 4
C
A
B
STEP 3
Push the dowels
into the holes
WIDE
In case of disassembling
for a move, close the opening
with 2" clear tape
FONT
MM07A / GB manual v. 2.1 P1 Pr nted n U.S.A.
c 2012, mh All r ghts reserved.
Check All Parts * showed actual size
STEP 1
DOWEL 2 PCS
BOLT 50 mm 4 PCS
A
HEX WRENCH 1 PC
DF
DISH
4 PCS LOCK NUT
4 PCS
C
B
STEP 2-2
sta nless sta nless
AAC SPIKE BOLT 4 PCS
E
sta nless
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2" Clear
Shipping Tape

* Perpendicular
* Same distance
* Angle 44 to 60 deg.
mhi
STEP 3
4. AAC (Accurate Alignment Calibration) Spike Bolts Preparation
5. Speakers Positioning
* Please use the recommendations as a starting point and make adjustments to position of the speaker and
other objects in the room until you find the combination that sounds best for you.
Owner's Manual
MM07A / GB
musical heart instruments
Speaker System Evidence Tower Gloss Black
www.musicalheartinstruments.net
page 2
STEP 1
Decide to set up on floor or on carpet
STEP 2
Mount the AAC spike bolts
on the 4 corners with the nuts and make
them the same height 9mm (3/4")
*Do not lock the AAC spike bolts
*Do not mount the dishes yet
On Floor
with Dishes O Dish
On Carpet
D
FROT
REAR
se the
attached
Height Gauge
If you set up the system on floor ,
you need to screw the 4 dishes (CCW thread)
on top of the AAC spike bolts .
Do not use Tool
to Tighten
1.5-3 m (5'-10')
Room Boundary
B=250mm (10") MI . B
S
S
S=500mm
(20") MI .
B=250mm (10") MI .
MM07A / GB manual v. 2.0 2 rinted in U.S.A.
c 2012, mhi All rights reserved.
44 deg.
60 deg.
D
D
to
CCW
CW
CCW
D
F
E
F
E
make same height
19mm (3/4")
* Improper Positioning
FLAT TV
Inadequate sofa
for serious listening
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mhi
Trapezoid shape Cabinet
to reduce internal reflection
Low diffraction chamfered corners
Acoustically controlled
tweeter face plate
Pure aluminum true ribbon
tweeter
Tweeter - Woofer isolation groove
High performance Pioneer
paper cone 4.5 Woofer
" mhi " Logo badge
Design ----------- 2 Way Bass Reflex
Tweeter ------ Pure aluminum ribbon
Woofer --- PIONEER paper cone 4.5
Impedance -------------------- 8 ohm
Frequency Range -- 50Hz to 120kHz
Sensitivity -------- 90 dB / 2.83V / m
Max. Power ------------- 100 W RMS.
High gloss black
Piano finish
MDF non-resonance front grille
Bass reflex Port S
with internal Flare
Mounting Screws
High Performance internal wires
/ Managed of wire direction
( SUPRA CLASSIC Tinned OFC
Cable)
Bass reflex Port L
with absorbent felt inner
High quality network
board, components are
crimped not soldered
Gold plated large size
high current mhi custom
binding posts, bi-wire capable
Top view
Closed gravel cavity
to stabilize cabinet and
absorb vibration
Owner's Manual
MM07A / GB
musical heart instruments
Speaker System Evidence Tower Gloss Black
www.musicalheartinstruments.net
page 3
6. Why is "Alignment Calibration" important and necessary ?
"In phase" is very important to reproduce correct sound and correct image. To keep the upper woofer and the
lower woofer in phase (50 to 10k H ), the distance from the both woofers to listener's ear should be the same.
If you keep listener's ear on tweeter axis, the distance from the both woofers to the ear will be always same.
(see right fig.) Mhi incorporates the AAC (Accurate Alignment Calibration) spike bolts with the base board.
AAC spike bolts are able to raise or lower the base board in order to keep on the tweeter axis.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
in phase
12345678
1
2
3
4
5
6
7
8
in phase
Ear Height same as
Tweeter
on tweeter a is Keep on tweeter a is
Ear Height higher
than Tweeter
Crossover Frequency --------- 10kHz
Weight ----------- 13.0 kg / 28.6 lbs.
*with Gravel +6 ～ 7kg (+13 ～ 15 lbs.)
Tower Cabinet W x D x H:
---------------- 152 x 210 x 1000 mm
with Base Board W x D x H:
---------------- 242 x 300 x 1030 mm
---------------- 9.5 x 11.8 x 40.6 inch
under Base Board Height:
-------------------- Felt Cushion: 3 mm
--------------------------- Dish: 4.5 mm
---- AAC Spike Bolt: 43 mm to 19 mm
(adjust 1 turn = 1.6 mm, 1/16 )
Max. Tilt Angle ----- REF. +, - 5.4 deg.
Break-in period ------ 50 to 100 hours
123
45678
1
2
3
4
5
6
7
8
out of phase
Ear Height higher
than Tweeter
off tweeter a is
How to Calibrate
7. Fine Positioning and Alignment Calibration
Please read the attached addendum
8. MM07A " vidence Tower" Features and Specifications
IMAGE ENHANCER
MIE01A *(option)
Stainless Steel
AAC Spike Bolts
MAX. 43mm
+4.5mm Dish
MIN. 19mm
Lock Nuts
Stainless Steel Dishes
Felt Cushions
MAX.
5.4 deg.
IMAGE ENHANCER
MIE01A *(option)
Rubber
Washers
857mm (33.7 ) with Dish
852mm (33.5 )
MM07A / GB manual v. 2.0 P3 Printed in U.S.A.
c 2012, mhi All rights reserved.
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mhi
Your mhi speakers are warranted to be free of defects for three(3) years after original purchase. If a speaker fails to perform
during the warranty period, we will repair or replace it at our option. The warranty does not apply to damage caused by
physical abuse to the speaker, or unauthorized modifications, or repairs performed by anybody except mhi or its dealers or
designated service agents, or natural disasters. This warranty specifically excludes consequential damage to other devices
connected to a speaker. mhi is not responsible for any consequential damage.
If a speaker requires service, you may either consult your mhi dealer, or send it directly to mhi. If you chose to return it to
mhi, please e-mail first . If we can diagnose the problem by e mail, we may be able to tell you how to fix it without
the inconvenience and expense of packing and shipping the speakers. Please do not send us your speakers until we give you
a return authorization . You are responsible for the cost of shipping to mhi; if the product is still under warranty, we will
return it to you at our expense. You can reach mhi service department at this address:
mhi
1235 Countess Drive
Corona, California 92882 USA
Phone: [phone] / Fax: [phone] / e mail: [e-mail]
Outside of United States and Canada, please contact your dealer first.
Please use the original packing materials when you ship a speaker to us. If you did not save the original box, let us know
when you request a return authorization, and we will send you another box. We will charge you for the replacement box
at our cost.
11. Limited Warranty
YOUR PRODUCTS' SERIAL #
10. Improper Usage
To protect your investments from performance & appearance damage
< Direct Sunlight > < Metal to the Tweeter >
< Excessive Heat > < Moisture >
Beware of strong
magnets!
< Excessive ower >
9. Connecting to your amplifier
< Recommendation >
Bi-wiring from amplifier to the speakers
< Standard wiring >
Use the short bars between tweeter and woofer
terminals.*The bars are pre mounted to the terminals.
Owner's Manual
MM07A / GB
musical heart instruments
Speaker System Evidence ower Gloss Black
www.musicalheartinstruments.net
page 4
* If you use a tube amplifier and
8 ohm speaker terminals are
available, connect to the 8 ohm taps.
4 8 16 C
RL
ohm
TUBE AMP.
C 16 8 4
ohm
LR
AMP.
Tweeter
Woofer Tweeter Woofer
Speaker Speaker
- +
- +
- +
- +
- +- + - + - +
- +
- +
LR
AMP.
Tweeter
Woofer Tweeter Woofer
Speaker Speaker
MM07A / GB manual v. 2.1 P4 Printed in U.S.A.
c 2012, mhi All rights reserved.
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