McIntosh Speaker XRT30 User Manual

Owner’s Manual  
XRT30  
Loudspeaker  
System  
XRT30  
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549  
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Thank You  
Table of Contents  
Your decision to own this McIntosh XRT30 Loudspeaker  
System ranks you at the very top among discriminating  
music listeners. You now have “The Best.” The McIntosh  
dedication to “Quality,” is assurance that you will receive  
many years of musical enjoyment from this unit.  
Please take a short time to read the information in this  
manual. We want you to be as familiar as possible with all  
the features and functions of your new McIntosh.  
Safety Instructions ............................................................. 2  
Thank You and Please Take a Moment ............................. 3  
Technical Assistance and Customer Service ..................... 3  
Table of Contents and Important Information................... 3  
Introduction ....................................................................... 4  
Performance Features ........................................................ 5  
Dimensions ........................................................................ 6  
Installation ....................................................................... 10  
How to Connect using a single amplifier ........................ 12  
How to Connect using two amplifiers............................. 14  
How to Connect using three amplifiers........................... 16  
Specifications .................................................................. 18  
Packing Instruction .......................................................... 19  
Please Take A Moment  
The serial number, purchase date and McIntosh Dealer  
name are important to you for possible insurance claim or  
future service. The spaces below have been provided for  
you to record that information:  
Important Information  
Caution: The XRT30 Bass Section Cabinet weight is 192  
pounds (87.1kg) and the High Frequency Column  
weight is 82 pounds (37.20kg) net. It requires two or  
more persons to safely handle each section.  
1. It is very important that Loudspeaker Cables of adequate size  
be used, to ensure that there will be no power loss or heating.  
Cable size is specified in Gauge numbers or AWG (American  
Wire Gauge). The smaller the Gauge number, the larger the  
wire size:  
Serial Number:  
Purchase Date:  
Dealer Name:  
Technical Assistance  
If at any time you have questions about your McIntosh  
product, contact your McIntosh Dealer who is familiar  
with your McIntosh equipment and any other brands that  
may be part of your system. If you or your Dealer wish ad-  
ditional help concerning a suspected problem, you can re-  
ceive technical assistance for all McIntosh products at:  
If the Loudspeaker Cables are 25 feet (7.62m) or less, use at  
least 18 Gauge (AWG) wire size or larger.  
If the Loudspeaker Cables are 50 feet (38.1m) or less, use at  
least 14 Gauge (AWG) wire size or larger.  
If the Loudspeaker Cables are 100 feet (76.2m) or less, use at  
least 12 Gauge (AWG) wire size or larger.  
The Loudspeaker Connection Terminals can accept up to 12  
Gauge (AWG) wire.  
McIntosh Laboratory, Inc.  
2 Chambers Street  
Binghamton, New York 13903  
Phone: 607-723-1545  
Fax: 607-723-3636  
2. For additional connection information, refer to the owners  
manual(s) for any component(s) connected to the XRT30  
Loudspeaker.  
3. The XRT30 has built-in speaker protection in the form of six  
automatic resetting solid-state devices as part of the  
crossover networks. Two protect the tweeters, one for the  
midranges and three for the woofers. The characteristics of  
this protection are that a certain amount of overdrive is  
allowed but extended periods of overdrive will trigger  
protection. If an obvious lack of high, mid or low frequencies  
is noticed, the Loudspeaker Protection Device may have  
activated. The protection devices will automatically reset  
when the volume control is reduced significantly and kept low  
until the output of the affected Loudspeaker Element returns  
to normal.  
4. When the XRT30 Loudspeaker System is driven by more than  
one amplifier, the output levels of the different amplifiers  
connected to the Loudspeaker System must be adjusted to  
achieve a proper balance between the low, midrange and high  
frequencies reproduced. This adjustment is best achieved  
through the use of audio test equipment operated by a  
qualified installer.  
Customer Service  
If it is determined that your McIntosh product is in need of  
repair, you can return it to your Dealer. You can also return  
it to the McIntosh Laboratory Service Department. For as-  
sistance on factory repair return procedure, contact the  
McIntosh Service Department at:  
McIntosh Laboratory, Inc.  
2 Chambers Street  
Binghamton, New York 13903  
Phone: 607-723-3515  
Fax: 607-723-1917  
Copyright 2002 by McIntosh Laboratory, Inc.  
3
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Introduction  
ure 3. The Woofer also incor-  
porates McIntosh’s Patented  
LD/HP2 Magnetic Circuit De-  
sign with shielding to greatly  
reduce any external magnetic  
field. Extensive investigating  
and testing resulted in a new  
design concept which utilizes  
a pair of aluminum shorting  
sleeves in the magnetic cir-  
LD/HP  
McIntosh Acoustic Engineers have refined the line source  
Column Loudspeaker concept to provide superior quality  
midrange and high frequency sound reproduction in a full  
range system.  
The High Fre-  
quency Section  
utilizes a patented  
Column Design1  
with multiple four  
inch Midrange  
LD/HP2 Magnetic  
Circuit Design  
Figure 1  
Drivers and one  
Conventional  
Figure 4  
cuit. Refer to figure 4. The sleeves virtually eliminate the  
negative influence of the fluctuating voice coil field on the  
permanent magnet  
field. This results in  
lower distortion due  
inch soft dome Tweeters. Refer to figure 1. Since the audio  
power fed to a column is distributed among all the drivers,  
to more linear mag-  
netic flux in the  
each driver does not have to work as hard, resulting in  
greater power handling capability and a dramatic reduction  
voice coil gap. Re-  
fer to figure 5. Ad-  
in distortion. The Sound Waves from the Column produce  
a Cylindrical Wave Front with a stable symmetrical hori-  
ditional benefits are  
less volume com-  
pression due to im-  
proved heat transfer  
through the sleeves and a cooler operating voice coil. Both  
measurements, as well as critical listening, reveal ten times  
zontal sound dispersion to minimize undesirable floor and  
ceiling re-  
flections  
that could  
detract from  
a stable  
Figure 5  
less distortion than previous designs. A good example of  
this low distortion is incredible smoothness and clarity in  
the reproduction of the human voice.  
The Crossover Networks used in the XRT30 Loud-  
speaker Sys-  
tem are de-  
signed to en-  
sure an even  
frequency re-  
sponse over  
the entire au-  
dible range.  
The Low Fre-  
sound im-  
age. Refer  
to figure 2.  
In the illus-  
tration the  
Loudspeaker on the left side produces a Cylindrical Wave  
Front and the Loudspeaker on the right side produces a  
conventional Spherical Wave Front.  
The Low Frequency Section of the System consists of  
two 12 inch Woofers. They have a large magnet assembly  
and long  
cone ex-  
cursions  
Figure 2  
quency Cross-  
over Network  
is a Third Or-  
der design uti-  
lizing Capaci-  
tors and In-  
ductors with  
high current  
with very  
low levels  
of har-  
monic dis-  
tortion and  
frequency  
response  
down to  
Figure 6  
capacity. Refer to figure 6. There are three different types  
of low loss (DCR) Inductors in the network, each one cho-  
sen not to exhibit any core saturation even at high power  
16Hz. Re-  
fer to fig-  
Figure 3  
1COLUMN Pat. No. 4,267,405  
2LD/HP Pat. No. 5,151,943  
4
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Introduction and Performance Features  
Performance Features  
levels. This prevents the addition of distortion to the music  
at low frequencies. The High Frequency Crossover Net-  
work utilizes both  
Second and Third  
Order Crossover  
Patented LD/HP Technology  
The McIntosh Low Frequency and Midrange Loudspeaker  
Elements feature the patented LD/HP Magnetic Circuit  
Design. This design, when compared to conventional  
Loudspeaker Elements, reduces distortion significantly. It  
also increases power handling and efficiency.  
Designs. Refer to  
figure 7. It also uses  
Capacitors and In-  
ductors with high  
current capacity.  
The Capacitors  
used include low  
loss (ESR) Polypro-  
Neodymium-Iron-Boron Alloy Magnets  
The 30 four inch Midranges and 25 one inch Dome Tweet-  
ers all use this Alloy. The Neodymium-Iron-Boron Alloy  
has a high flux density per unit of volume and helps to  
keep the Column weight to a minimum.  
pylene and Mylar  
types. Both Cross-  
over Networks also  
utilize self resetting  
high current Poly-  
Switches to provide an extra measure of protection.  
The enclosures are an important part of the XRT30  
Loudspeaker System. The Bass Section Cabinet is con-  
structed from 1  
inch and 1-1/2 inch  
thick MDF with  
Shielded Magnetic Field  
The XRT30 may be used in Home Theater Installations  
near a television receiver or monitor without causing the  
television image to degrade. McIntosh has designed  
special shielding around the magnetic structure of the  
XRT30 Loudspeaker Elements to prevent interference.  
Figure 7  
High Power Handling  
The Loudspeaker Elements and Crossover Components of  
the XRT30 are all chosen for use with powerful amplifiers  
up to 1,200 watts.  
laminated hard-  
woods and veneers.  
Internally, the cabi-  
net is reinforced  
with multiple MDF  
Cross-Bracing  
Trusses all de-  
signed to help in-  
Superior Imaging  
Locating the Column of Tweeters between the two  
Columns of Midranges helps to generate a symmetrical  
horizontal polar response for superior imaging.  
sure that the cabi-  
net will not vibrate.  
Refer to figure 8.  
The High Fre-  
quency Column  
Section utilizes a  
massive extruded  
aluminum enclosure that houses the 30 four inch Midrange  
and 25 one inch Tweeter Drivers. Refer to figure 9. It also  
has multiple front  
to back internal  
braces to form a  
dampened rigid  
Column Struc-  
ture. The  
Versatile Operation and Placement  
In additional to the regular connections, the XRT30 Loud-  
speaker System provides separate connections for Bi-Am-  
plification and Tri-Amplification hookups. The Crossover  
Network has provisions to ensure the best performance  
when the High Frequency Column is mounted in a wall.  
Figure 8  
Gold Plated Input Connectors  
The XRT30 input connectors are gold plated for superior  
corrosion resistance and high electrical conductivity.  
Figure 9  
Column’s small  
footprint allows for a variety of different placements in a  
room.  
5
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XRT30 Bass Section Dimensions  
Top View of the XRT30 Bass Section  
The following dimensions can assist in determining the  
best location for your XRT30 Loudspeaker System.  
17"  
43.18cm  
17"  
43.18cm  
14"  
35.56cm  
14"  
35.56cm  
1"  
2.54cm  
Side View of the XRT30 Bass Section  
Front View of the XRT30 Bass Section  
14-7/8"  
37.78cm  
17"  
43.18cm  
37-3/4"  
95.88cm  
31-15/16"  
81.12cm  
37-1/2"  
95.25cm  
1-3/4"  
4.45cm  
14-7/8"  
37.78cm  
1-5/8"  
4.13cm  
18-5/8"  
47.31cm  
20-1/4"  
51.44cm  
6
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Dimensions  
Front View of the XRT30 Bass Section  
Rear View of the XRT30 Bass Section  
19-1/4"  
48.90cm  
21-1/4"  
53.98cm  
16-1/2"  
41.91cm  
14-1/4"  
36.20cm  
11-3/4"  
29.85cm  
7-13/16"  
19.84cm  
10-1/8"  
25.72cm  
10-1/8"  
25.72cm  
12-15/32"  
31.67cm  
7
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XRT30 Column Section Dimensions  
The following dimensions can assist in determining the  
best location for your XRT30 Loudspeaker System.  
Side View of the  
Rear View of the  
XRT30  
Front View of the  
XRT30  
XRT30  
High Frequency Column  
High Frequency Column  
High Frequency Column  
4-1/2"  
11.43cm  
5-3/8"  
13.65cm  
76-1/8"  
193.36cm  
21-15/16"  
55.72cm  
3-15/16"  
10.00cm  
17-1/4"  
43.82cm  
1-3/4"  
4.45cm  
12-1/2"  
31.75cm  
5-3/8"  
13.65cm  
16-3/8"  
41.59cm  
5-3/4"  
14.61cm  
5-7/8"  
14.92cm  
16-3/8"  
41.59cm  
8-3/16"  
20.80cm  
10-9/16"  
26.83cm  
8
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Dimensions  
End View and Base of the  
XRT30  
High Frequency Column  
Front View of the  
XRT30  
High Frequency Column  
9-5/8"  
24.45cm  
13-1/16"  
33.18cm  
6-1/2"  
16.51cm  
3-3/8"  
8.57cm  
9-3/16"  
23.34cm  
7/8"  
2.22cm  
1-3/8"  
3.49cm  
4-1/2"  
11.43cm  
2-1/8"  
5.40cm  
7"  
17.78cm  
1-5/8"  
4.13cm  
13-1/8"  
33.34cm  
4-1/2"  
11.43cm  
2-3/4"  
6.99cm  
11-1/16"  
28.10cm  
9-3/4"  
24.77cm  
16-3/8"  
41.59cm  
9"  
22.86cm  
9
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Installation  
The XRT30 High Frequency Column Section requires two  
or more persons to safely handle the Column during as-  
sembly and placement. Follow the instructions below for  
unpacking and assembly. It is recommended that the Pro-  
fessionals at your McIntosh Dealer, who are skilled in all  
aspects of installation and operation, install the XRT30  
Loudspeaker System and any associated audio equipment.  
6. Replace the shipping carton top onto the shipping car-  
ton bottom. Take the two center pieces of the just re-  
moved packing material and lay it down flat onto the  
top of the shipping carton.  
7. Carefully remove the protective shipping bag(s) from  
the Loudspeaker Column so as not to mar the Column  
Finish or damage the Loudspeaker Drivers.  
8. Place the Loudspeaker Column on top of the packing  
material located on top of the shipping carton making  
sure to align the Column Bottom End (the Glass Name  
Plate end) to the end of the shipping carton. Refer to  
figure 12.  
Unpacking the High Frequency Column  
1. Remove the banding material from the shipping car-  
ton. Refer to figure 10.  
2. Lift off the top of the  
shipping carton and set  
it aside.  
3. Lift up on the rear of  
Unpacking the Column Base  
9. Lift and remove the bubble wrap packing material  
from the base.  
10. Locate and remove the bag of hardware and Allen  
Wrench Tool taped to the bottom of the base.  
the Column Loud-  
speaker, near the foam  
packing material at  
Figure 10  
both ends. Place the entire assembly (Column, Loud-  
speaker Grille and foam packing material) next to the  
bottom shipping carton  
on a flat surface. Refer  
to figure 11.  
Assembling the High Frequency Column  
11. Using the supplied Allen Wrench, remove two screws  
Remove  
Remove  
from each side of  
the Column Bot-  
tom. Refer to fig-  
ure 14.  
Two Screws  
Two Screws  
4. Release the Loud-  
speaker Grille from the  
packing material by  
opening the slit in the  
packing material lo-  
12. Orient the Col-  
umn Base with the  
Decal Arrow  
Figure 11  
cated on the top center. Remove the Loudspeaker  
Grille from the protective shipping wrap and set it  
aside.  
pointing toward  
the front of the  
Loudspeaker Col-  
umn. Refer to fig-  
ure 15.  
Figure 14  
5. In a similar manner, lift out the Loudspeaker Column  
and set it aside.  
Glass Panel  
Packing  
material  
Packing  
material  
Figure 12  
Fastening Pin  
Gromment  
Figure 13  
10  
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Installation  
13. Attach the Column Base to the Loudspeaker Column music with continuous bass, setting up the speakers and  
using the four supplied machine bolts and washers. Re- listening to them from the main listening spot. Move the  
fer to figure 12.  
Loudspeakers to an alternate location and repeat the listen-  
ing, paying attention to how the bass qualities and re-  
sponse levels change. Do not assume the loudest bass is  
best; rather listen for booming (a lack of articulation), as  
well as a balance over the whole spectrum, to assure the  
bass will not drown out the other parts of the music. Ex-  
periment with various Loudspeaker positions until the lo-  
cations that sound best are found.  
14. Orient the Loudspeaker Grille  
with the extended wood trim  
pointed towards the Column Base  
and line it up even with top/sides  
of the Column. Align the Grille  
fastening pins to the Column  
Grommets (there are six pins on  
each side). Carefully push down  
Figure 15  
to secure the Grille to the Column. Refer to figure 13.  
Locating Loudspeakers for use in Home Theater  
In a Home Theater application, the placement of Left and  
Right Front  
Optional Feet  
15. Two sets of optional feet (fourteen Tiptoes and fourteen Loudspeakers  
Glides) are supplied with the XRT30 Loudspeaker Sys- can be limited  
tem. Refer to figure 16. To  
prevent crushing carpet use  
the Tiptoe Spikes; to protect  
non-carpeted flooring use the  
Chrome Glides. Both the  
Glides and Tiptoes have a  
threaded shaft and locking nut  
that screw into the tapped  
holes in the bottom of the  
by such  
considerations  
as the size and  
location of the  
video monitor.  
The locating  
suggestions in  
the “for use in a  
Music System”  
section below  
can still be  
Glides  
Tiptoes  
Figure 16  
XRT30’s base rails. The feet can be independently ad-  
justed to compensate for uneven flooring. The second  
set of optional feet are for the Bass Section Cabinet.  
16. Stand the Column upright.  
Figure 17  
helpful as a  
starting place. Refer to figure 17.  
Locating Loudspeakers for use in a Music System  
When used in a Music System the distance between the  
Room Placement  
Loudspeaker placement in a room can greatly affect  
performance. The XRT30 Loudspeaker is designed for  
both Music and Home Theater Systems. The optimal  
method for selecting speaker locations includes the use of  
a real time spectrum analyzer operated by an experienced  
system installer. An uncompromising installation would  
take into consideration the floor, wall and ceiling  
Loudspeakers  
and the listener  
to the  
Loudspeakers  
should form an  
isosceles  
triangle. If the  
speakers are too  
far apart relative  
coverings, the type and placement of furniture and can  
even include the architectural design of the room and its  
construction materials. In those instances where placement to the listener,  
in the room is fixed an enviromental equalizer may be  
needed to restore proper musical balance.  
some imaging  
can be lost.  
Refer to figure  
18.  
Placement near a wall, corner, floor, ceiling or any in-  
tersecting surfaces will reinforce some bass frequencies.  
Which bass frequencies are boosted by placement in a par-  
ticular location is dependant on the dimensions of the  
room. Test the various Loudspeaker locations by playing  
Figure 18  
11  
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How to Prepare Hookup Cables  
The McIntosh XRT30 Loudspeaker System utilizes bind-  
ing posts for speaker wire connections. Prepare the Loud-  
speaker Hookup Cables that attach to the Power Amplifier  
Output Terminals:  
Section to the COLUMN MID 4S (+) Binding Post of  
the High Frequency Column Section..  
5. Tighten all of the Loudspeaker and Amplifier Binding  
Posts.  
Bare wire cable ends:  
Carefully remove sufficient insulation from the cable  
ends, refer to figures 20, 21 & 22. If the cable is  
stranded, care-  
McIntosh Single Channel Amplifier  
fully twist the  
strands to-  
gether as  
tightly as pos-  
sible.  
Note: If desired, the twisted ends can be tinned with  
solder to keep the strands together and/or attach a  
spade lug.  
Spade lug or prepared wire connection:  
Insert the spade lug connector or prepared section of  
the cable end into the terminal side access hole, and  
tighten the terminal cap until the cable is firmly  
clamped into the terminal so the wires cannot slip out.  
Refer to figures 23, 24 & 25.  
How to Connect using a single Amplifier  
1. Connect a Loudspeaker cable from the Negative (-)  
Binding Post of the Amplifier to the XRT30 Bass Sec-  
tion SYSTEM INPUT COMmon (-) Binding Post.  
Note: The SYSTEM INPUT AND WOOFER DIRECT  
COMmon (-) Binding Posts on the XRT30 Bass Section  
must have a jumper installed between them.  
2. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier to the XRT30 Bass Sec-  
tion SYSTEM INPUT 4S (+) Binding Post.  
3. Connect a Loudspeaker cable from the TO COLUMN  
MID/HIGH COMmon (-) Binding Post of the XRT30  
Bass Section to the Column MID COMmon (-) Binding  
Post of the High Frequency Column Section.  
Note: The MID and HIGH COMmon (-) Binding Posts must  
have a jumper installed between them. Likewise the  
MID and HIGH 4S (+) Binding Posts must also have a  
jumper installed between them. If the XRT30 Column is  
install into wall, use the MID IN-WALL Binding Posts  
instead of the Column MID Binding Posts.  
4. Connect a Loudspeaker cable from the TO COLUMN  
MID/HIGH 4S (+) Binding Post of the XRT30 Bass  
12  
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How to Connect using a single Amplifier  
XRT30 High Frequency Column Section  
XRT30 Low Frequency Bass Section  
13  
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How to Prepare Hookup Cables  
The McIntosh XRT30 Loudspeaker System utilizes bind-  
ing posts for speaker wire connections. Prepare the Loud-  
speaker Hookup Cables that attach to the Power Amplifier  
Output Terminals:  
Binding Post of the Amplifier Number Two to the  
XRT30 High Frequency Column Section MID  
COMmon (-) Binding Post.  
4. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier Number Two to the  
XRT30 High Frequency Column Section MID 4S (+)  
Binding Post.  
Bare wire cable ends:  
Carefully remove sufficient insulation from the cable  
ends, refer to figures 20, 21 & 22. If the cable is  
stranded, care-  
fully twist the  
strands to-  
gether as  
tightly as pos-  
sible.  
Note: If desired, the twisted ends can be tinned with  
solder to keep the strands together and/or attach a  
spade lug.  
Note: The MID and HIGH COMmon (-) Binding Posts must  
have a jumper installed between them. Likewise the  
MID and HIGH 4S (+) Binding Posts must also have  
a jumper installed between them. If the XRT30  
Column is installed into wall, use the MID IN-WALL  
Binding Posts instead of the Column MID Binding  
Posts.  
5. Tighten all of the Loudspeaker and Amplifier Binding  
Posts.  
Spade lug or prepared wire connection:  
Insert the spade lug connector or prepared section of  
the cable end into the terminal side access hole, and  
tighten the terminal cap until the cable is firmly  
clamped into the terminal so the wires cannot slip out.  
Refer to figures 23, 24 & 25.  
McIntosh Single Channel Amplifier Number Two  
How to Connect using two Amplifiers  
1. Connect a Loudspeaker cable from the Negative (-)  
Binding Post of the Amplifier Number One to the  
XRT30 Bass Section SYSTEM INPUT COMmon (-)  
Binding Post.  
McIntosh Single Channel Amplifier Number One  
Note: The SYSTEM INPUT AND WOOFER DIRECT  
COMmon (-) Binding Posts on the XRT30 Bass  
Section must have a jumper installed between them. If  
the Audio or Home Theater System Electronics has the  
capability of an Electronic Crossover set to 80Hz,  
remove the jumper between the SYSTEM INPUT AND  
WOOFER DIRECT COMmon (-) Binding Posts on the  
XRT30 Bass Section and save them for possible future  
use. Connect the Amplifier that is reproducing the  
frequency range from 16Hz to 80Hz to the WOOFER  
DIRECT Binding Posts, instead of the SYSTEM  
INPUT Binding Posts.  
2. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier Number One to the  
XRT30 Bass Section SYSTEM INPUT 4S (+) Binding  
Post.  
3. Connect a Loudspeaker cable from the Negative (-)  
14  
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How to Connect using two Amplifiers  
XRT30 High Frequency Column Section  
XRT30 Low Frequency Bass Section  
15  
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How to Prepare Hookup Cables  
The McIntosh XRT30 Loudspeaker System utilizes bind-  
ing posts for speaker wire connections. Prepare the Loud-  
speaker Hookup Cables that attach to the Power Amplifier  
Output Terminals:  
Section and save them for possible future use.  
4. Connect a Loudspeaker cable from the Negative (-)  
Binding Post of the Amplifier Number Two to the  
XRT30 High Frequency Column Section MID  
COMmon (-) Binding Post.  
Bare wire cable ends:  
Carefully remove sufficient insulation from the cable  
ends, refer to figures 20, 21 & 22. If the cable is  
stranded, care-  
fully twist the  
strands to-  
gether as  
tightly as pos-  
sible.  
5. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier Number Two to the  
XRT30 High Frequency Column Section MID 4S (+)  
Binding Post.  
6. Connect a Loudspeaker cable from the Negative (-)  
Binding Post of the Amplifier Number Three to the  
XRT30 High Frequency Column Section HIGH  
COMmon (-) Binding Post.  
Note: If desired, the twisted ends can be tinned with  
solder to keep the strands together and/or attach a  
spade lug.  
7. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier Number Three to the  
XRT30 High Frequency Column Section HIGH 4S (+)  
Binding Post.  
8. Tighten all of the Loudspeaker and Amplifier Binding  
Posts.  
Spade lug or prepared wire connection:  
Insert the spade lug connector or prepared section of  
the cable end into the terminal side access hole, and  
tighten the terminal cap until the cable is firmly  
clamped into the terminal so the wires cannot slip out.  
Refer to figures 23, 24 & 25.  
McIntosh Single Channel Amplifier Number Two  
How to Connect using three Amplifiers  
1. Connect a Loudspeaker cable from the Negative (-)  
Binding Post of the Amplifier Number One to the  
XRT30 Bass Section SYSTEM INPUT COMmon (-)  
Binding Post.  
Note: The SYSTEM INPUT AND WOOFER DIRECT  
COMmon (-) Binding Posts on the XRT30 Bass  
Section must have a jumper installed between them. If  
the Audio or Home Theater System Electronics has the  
capablilty of a Electronic Crossover set to 80Hz,  
remove the jumper between the SYSTEM INPUT AND  
WOOFER DIRECT COMmon (-) Binding Posts on the  
XRT30 Bass Section and save it for possible future  
use. Connect the Amplifier that is reproducing the  
frequency range from 20Hz to 80Hz to the WOOFER  
DIRECT Binding Posts, instead of the SYSTEM  
INPUT Binding Posts.  
McIntosh Single Channel Amplifier Number One  
2. Connect a Loudspeaker cable from the Positive (+)  
Binding Post of the Amplifier Number One to the  
XRT30 Bass Section SYSTEM INPUT 4S (+) Binding  
Post.  
3. Remove the jumpers from between the MID and HIGH  
Binding Posts on the XRT30 High Frequency Column  
16  
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How to Connect using three Amplifiers  
XRT30 High Frequency Column Section  
McIntosh Single Channel Amplifier Number Three  
XRT30 Low Frequency Bass Section  
17  
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Specifications  
Specifications  
System Driver Complement  
Two 12 inch Woofers  
Thirty 4 inch Midranges  
Twenty-five 1 inch Dome Tweeters  
Impedance  
4 ohms Nominal  
Frequency Response  
16Hz - 20kHz  
Sensitivity  
88dB (2.8V/1m)  
Crossover Frequencies  
80Hz  
1,700Hz  
Power Handling  
1200 Watts Maximum  
Overall Dimensions  
Base Section:  
37-3/4 inches (95.88cm) Height, 20-1/4 inches (51.44cm)  
Width, 18-5/8 inches (47.31cm) Depth  
Column Section(including attached base):  
76-1/8 inches (193.36cm) Height, 16-3/8 inches (41.59cm)  
Width, 16-3/8 inches (41.59cm) Depth  
Finish  
Black Ash, Natural Cherry, Red Cherry  
Weight (each)  
Base Section:  
192 pounds (87.1kg) net, 212 pounds (96.16kg) in  
shipping carton  
Column Section:  
82 pounds (37.20kg) net, 102 pounds (46.27kg) in  
shipping carton  
Column Base:  
15.5 pounds (7.03kg) net, 18 pounds (8.16kg) in shipping  
carton  
18  
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Packing Instructions  
Packing Instructions  
In the event it is necessary to repack the equipment for  
shipment, the equipment must be packed exactly as re-  
ceived. Failure to do so will result in shipping damage.  
Use the original shipping carton and interior parts only  
if they are in good serviceable condition. If a shipping car-  
ton or any of the interior part(s) are needed, please call or  
write Customer Service Department of McIntosh Labora-  
tory.  
High Frequency Section Column  
Quantity Part Number  
Description  
1
1
2
2
034203  
034204  
034205  
034206  
Top shipping carton  
Bottom shipping carton  
Foam end cap  
Foam center cap  
Bass Section  
Quantity Part Number  
Note: The High Frequency Column Base is wrapped in bubble  
pack and placed in a small carton.  
Description  
2
2
2
034218  
034217  
034220  
Top or bottom shipping carton  
U-Shaped shipping carton  
Foam end cap  
Note: The Foam End Cap, when  
used for the bottom of the  
XRT30 Bass Section, has  
three foam knockouts  
which must be removed to  
accommodate the sides  
and front of the cabinet  
bottom.  
19  
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McIntosh Laboratory, Inc.  
2 Chambers Street  
Binghamton, NY 13903  
McIntosh Part No. 040813  
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