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.
vidence
videncevidence
vidence ower
owerower
ower
