Infinity 4.1t - Manual

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Page 2 – I S S U E N O . 2 8 • S U M M E R / FA L L 2 0 0 2; Audio; M a n u f a c t u r e r ’ s
Page 3 – T H E A U D I O C R I T I C; This theory is all well and good,; M e a s u r e m e n t s; The Intermezzo 4.1t’s frequency
Page 4 – The Intermezzo 4.1t’s horizontal
Page 6 – U s e a n d L i s t e n i n g Te s t s; Although each Infinity Intermezzo
Page 7 – —Don Keele

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1 6

T H E A U D I O C R I T I C

F l o o r - S t a n d i n g 4 - W a y
S p e a k e r w i t h P o w e r e d
S u b w o o f e r

I n f i n i t y
“ I n t e r m e z z o ” 4 . 1 t

Infinity Systems, Inc., a Harman Interna-
tional Company, 250 Crossways Park
Drive, Woodbury, NY 11797. Voice: (800)
553-3332. Fax: (516) 682-3523. Web:
www.infinitysystems.com. Intermezzo 4.1t
floor-standing 4-way loudspeaker system
with built-in powered subwoofer. $7000.00
the pair. Tested samples on loan from man-
ufacturer.

Editor’s Note: I hasten to point out,

before the self-righteous element in the
audio community does, that Don Keele is
currently employed by Harman/Becker
Automotive Systems, which is owned by
the same parent company as Infinity Sys-
tems, namely Harman International.
Harman/Becker and Infinity are totally
independent of each other, without any
overlap; in fact, they are located 700 miles
apart—but they are connected via Sidney
Harman’s pocket. He, or more precisely his
company, owns a significant percentage of
the audio industry, so that any one of the
limited number of truly qualified audio
engineers (like Don Keele) has more than
a small chance of falling within his
purview. It can’t be helped. As I pointed
out in one of the earliest issues of The
Audio Critic, in the late ’70s, the alter-
native is to use reviewers totally uncon-
nected to the audio industry, such as
audiophile dentists. Other magazines do.
Unfortunately, said dentists don’t know the
difference between MLS and ETF, and
that matters to me more than our
reviewers’ affiliations. I can assure you, in
an event, that no one at the corporate of-
fices of Harman International even knew
about this review, let alone influenced it.

I n t r o d u c t i o n

Intermezzo: a short musical move-

ment separating the major sections of
a lengthy composition or work; or in-
termediate: one that is in a middle po-
sition or state. Both terms aptly

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Summary

Page 2 - I S S U E N O . 2 8 • S U M M E R / FA L L 2 0 0 2; Audio; M a n u f a c t u r e r ’ s

I S S U E N O . 2 8 • S U M M E R / FA L L 2 0 0 2 1 7 describe the subject of this issue’s loud-speaker review, the Infinity “Inter-mezzo” 4.1t, by appropriately tyingtogether function and music. The 4.1tis simultaneously an intermediatespeaker in Infinity’s home theater lines,positioned between th...

Page 3 - T H E A U D I O C R I T I C; This theory is all well and good,; M e a s u r e m e n t s; The Intermezzo 4.1t’s frequency

1 8 T H E A U D I O C R I T I C mode tracking power supply poweringa class-AB amplifier. The powersupply’s output voltage tracks theaudio signal in such a way as to mini-mize output device power dissipation.Quoting the 4.1t’s owners manual:“The result is an extremely efficientaudio amplifier that do...

Page 4 - The Intermezzo 4.1t’s horizontal

I S S U E N O . 2 8 • S U M M E R / FA L L 2 0 0 2 1 9 The Intermezzo 4.1t’s horizontal and vertical off-axis frequency re-sponses are shown in Figs. 2 through 4,respectively. The horizontal off-axiscurves with 15° increments in Fig. 2are well-behaved but exhibit rolloffabove 12 kHz at angles of 30°...