Just, liltelJeing t"ere I - technicalaudio.com

I,
• • • Just, liltelJeing t"ere . .. I,
Wil~'( RADIO
"
& TELEVISION tvkr.
611 Wast 45th Street
... York 19. N. Y.
RECORDERS AND ACCESSORIES
RECOMMENDED BY EXPERTS
FOR COMPLETE VERSATILITY AND PROFESSIONAL RELIABILITY.
IF YOUR RECORDER DOES NOT HAVE THESE FEATURES YOU ARE NOT REALIZING THE
- - -FULLEST ADV'ANTA"GE OF TA PE RECORDING :
COMPARE BEFORE YOU BUY
Reproduce s entire audible range
~jlhoul
10'12. inch.
dis-
ree/3
Pe rmi t up to 2 hours recording
without interruption. " . .. to obtain good resulh
in tope recording, th e least e}l;pensive recorder
mus t cost over three hundred dollars. Man y
music lovers have learned this by" bitter e}l;'
pe rience, which has cost t hem no t on ly time and
grie f, bu t mony dollors os we ll for equipmont
they cou rd only dispose of at a loss .. ."
tor tion. " The Concerto ne tope recorder ... is
the lowest priced machine in the semi-professional orea thot con provide unquestioned high
fidelity recordi ng of professional quality."
HOME MUSIC SYSTEMS, by Edwa rd T. Canby
MAKE MUSIC LIVE, by Irvin g Greene,
James R. Radcliffe, Robert Scharff
I'
Assure accurate
!ope molion. "' ... 01 15
Inch es (I Concertonc tope
co n very nearly equa l the
best quality to be had at
any price - high recommendation for a machine
thol sells fo r about oncfifth the cost of on overage professiona l model."
HOME MUSIC SYSTEMS,
by Edward T. Conby
Per mit Mon itor ing
Direct From the Tope While
Reco rding. " . . . Tope re o
corders are availab le with
two o r three heads; all re o
cordors have o n erose head.
Recorders with two head s use
the second head alte rna te ly
for re cording and repro(fuc.
tion . The Concertone utili zes
three he ads: o ne fo r erase,
o ne fo r reco rding, and one
for playback or reproductio n.
"The requirements for opti·
mum pe rf o r mance in re cord ·
ing ond re product ion are not
al ike; consequently a double·
duty hea d is, at best, a com·
promise. Belter qu ality is ob·
ta in ed when three heads are
used, 0$ oach can th en be de·
signed for best pe rformance
in a spe cific opp licotion."
HIGH FIDELITY SIMPLIFIED
by Ha ro ld D. W e iler
ECONOMIES IN PRODUCTION AND SIMPLIFIED DESIGN
SAVINGS ARE PASSED ON TO YOU-GREATEST VALUES IN TAPE RECORDERS
AT SPECIAL PROFESSIONAL USER NET PRICES
~
Blochule No. 5J 54 5M
lowesf Prices ID,
'IS lOll 'IS
$345
1500 RECORDER
MOOEl 504
CARRYING CAS E
W1TH MO NIT OR
AMPLIfiER AND
LOUDSPEAKER
1501
two s pe ed
direct drive
307 SOUND-ON-SOUND "5· 0-5"
quenliol recordings with one
I
1600 SERIES
1500 SERIES
THE BASIC RECORDER MODEl 1501
22" X 14" X6" mo unti ng depth
below panel.
RECORD ING SPEEDS,
7.5" and 15" pe r second.
Rewin d speed: 10 %" NAB reel in
1 min ut e.
fREQUENCY RESPONSE,
:!: 2 db from 50 to 15,000 cyc les
at 15 "/sec. :!::2 db from SO to
9,000 cyc le s at 7.S" ; sec.
fLUTTER AND WOW ,
0.1% at lS" / sec; 0.3% at
7.5" / sec.
SIGNAL TO NOISE RATIO ,
Bette r than SO db.
TOTAL HARMON IC DISTORTION , l ess tha n 2% at no rma l maximum
signal leve l.
INPUT IMPEDANCE,
200,000 ohms.
OUTPUT IMPEDANCE,
20,000 ohms.
MINIMUM INPUT SIGNAL,
2 mill ivolts.
OUTPUT SIGNAL,
Audio - 1 volt.
PLAYING TIME. SINGLE TRACK, 7" ree l, 16 mi n. at lS" / sec.;
32 min. at 7.S" /sec.; 10% reel,
33 min. at lS" /s ec.; 66 mi n. at
7.5"/sec. Oouble above times for
dua l track recordi ng.
POWER REQUIREMENT,
200 watts, 117V., 60 cyc le single
phase .
SIZE,
THE BASIC RECORDER MODEL 15D2
As above . .·/i th 2·speed direct drive hysteresis synchronous lIlot or
for extreme timing accuracy (±O.3 %l.
THE BASIC RECORDER MDDEL 1503
As above (1 501), for recording speeds of 7.5" and 3.75" per second.
1 501
1503
1502
BASIC RECORDER: 7% and 15 i.p.s. tope speeds. Drive .mechanism; power supp ly; e rose, record and playback
preomp litier, mounted on cost Ohlminum panel. Po c ked in
corrugated shipper, ready for custom installat ion. $345 .00
BASIC RECORDER: 3 34 and 7% i.p.s.
. . ... ... $345.00
BAS IC RECORDER: 7% and 15 i.p.s . Wi th tw o·~ p eed
hys teresis synchronous direct drive mo tor. MounT on,;,
position . horizon tal to ve rl icat ree l locks and ouromOlic
cut off switch induded as standard accessories.
$445 .00
MODEL 1601 : SIZE:
11 mount ing
X 1411 X 6
depth below panel.
RECORDING SPEEDS:
7.5" and 15 11 per second.
REWIND SPEED:
10V2 11 NAB reel in 1 minute.
FREQUEN CY RESPONSE:
± 2 db from 50 10 15,000
cycles at 15" / sec. ± 2 db
from 50 to 7 ,5 00 cycles at
7 .5"/sec.
FLUTTER AND WOW :
0.1 % at 15 11 /sec.; 0.3 0/0 a t
7.5/1/ sec .
2211
SIGNAL TO NOISE RA TIO:
Beller than 45 db.
TOTAL HARMONIC
DISTORTION :
l ess than 2% at normal ma xi·
mum signal level.
INPUT IMPEDANCES :
200,000 ohms .
OUTPU T IMPEDANCES:
20,000 ohms.
M IN IM UM INPUT
SIGNALS:
2 millivo lts .
1601
OUTPUT SIGNALS:
Ove r 1 Audio volt.
PLAYING TIME:
7" ree l, 16 min. at 15/1/sec.;
32 min. 01 7.5 11 / sec.; 10 %"
reel, 33 min . at 15" /sec.;
66 min. at 7.5/1 /s ec .
P.OWER REQUIREMENT:
200 walls, 11 7V., 60 cyc le
single phose . 2-speed direct
drive indu ction motor.
M ODEL 1602:
As above, except with 2speed direct d rive hysteresi s
synchronous motor for e xtreme timing accuracy
(± 0.3 % ).
MODEL 1603:
As above (160 1), excep t recording speeds of 7.5 11 and
3.75" per second.
STEREO · BINAURAL RECORDER : Dual electronic chos.i$ .
Separate 2· chonnel reco rd and playback he ads. Direct
drive induction moto r. 7'12 and 15 i. p.s .... . ... $495 .00
TAPE SPEEDS ,
Instant se lectic
7.5"; Sec.
f REOUE NCY RE :
± 2 db from 4(
at 15";'
± 2 db .
aI7.5"/ Sec.
SIGNAL TO NOI
55 db as meas
NARTB slanda
3% T.H.O.l
10m HARMON
2% at zero V.U
TI MING AC CU RI
Beller than 99.:
TOTAL fLUTTE R
le ss than 0.1 %
less than 0.2%
REWIND AN D f l
less than §.Q..se
CONCERTO N
SBM- l
PAIR OF MATCHED BINA '
complete wi th pha sing di .
inp ut
SBM·2 PA IR OF MATCHED SINAI
for low impedance inpu t
ACO·l AU TOMATIC CUT·OFF : Fc
Turns off reco rde r 01 end
801 NAB REEL ADAPTER: For
RM A standard hubs of bl
802 NAB I DYl" REELS: tow
on both sides. Conform t
1 602 STEREO-BINAURAL RECORDER, Some as 1601, except wi th
2-speed hy steres is synchronous motor. 7Yl and 15 i. p. s.
$595.00
803 Set of th ree aligned heo ,
804 Set of three ol i gne~o(
504 CARRYING CASE: r·~
1603 STEREO-SINAURAl RECORD ER: Some a s 160 1, except lor
3 lh, and 7% i.p .s.
. ... ... $495.00
extended rang e OV ... .... e
con nec tion s for portabl e
Effective May 15, 1954
(
(Price s subiect 10 ChOn g e)
wi lh ol,ll nol ice l
505 CARRY ING CASE, With ,
spea ker, with all connec
1500 and 1600 series
'" /"" '" $
54 5
.
~ ~, ,¥
ADAPTER: For making ie·
Concertane Recorder. In19 .9 5
I
;PONSE,
to 1I,OOOCP.S.
.~OO
CP.S.
SE RATIO ,
lTed by proposed
'd 1400cP.S. at
IC OISTORTlO N,
.CY,
1%.
AND WOW,
RMS at 11"/ Sec.
~MS at 7.5"/ Sec.
,ST FORWARD ,
os. lor 2500 leet.
FROM STOP TO 15"/ SEC.,
0.1 second.
HEAD MOUNTING ,
Interchangeable Bracket mount·
ing up to FIVE heads.
METER INDICATION ,
Bias current, record level, output
leve l.
MONITOR OUTPUT ,
From tape or input signa l.
INPUT IMPEDANCE.
One megohm on high impedance
microphone input. 50/ 250 ohms
balanced or unbalanced with
plug in transformer # T·3344.
200,000 ohms unbalanced bridg·
ing inpu t.
INPUT SEN SITIVITY,
OUTPUT IMPEDAN CE ,
Cathode follower. 600 ohms bal·
anced output wit h plug in trans·
lormer # T2560.
OUTPUT LEVEL ,
2 volts from ca thode follower
output.
Zero DBM across 600 ohm line.
FI LAMENT SUPPLY,
D.C. on all filament s.
DIMENSIONS,
Drive mechanism, 1411 x 1911 •
Mounting Depth, 6" below panel.
Amplifier, 5V4"X 19".
Mount ing deplh, 6" below pane l.
Orive mechanism, 35 Lbs.
Amp lifier.
10 lbs.
, ACCESSORIES
TUBE LI ST,
JRAl DYNAMIC MICROP HONES,
c and cos e . For high impedance
...
. S I 35 .00
IRAl DYN AMIC MICROPHON ES,
... $ 13S. 00
r models 150 1, 1502 and 1503.
of reel or if lo pe fails . .. 55 .95
moun ting NAB 10'12" reel s on
sic record er .....
.. 52 .0 0
2·1 2AX7; 1·12AT7; 2·12AU7;
neflio 2500 fOOl reeh, flanged
NAB Recommended ·:..:mdords
S2 .75
Is, dual track
... S42 . 50
, s ~ le track . . ... .. . 54 2 .S0
lh mon itoring amplifier,
:J~~ . JI'Io unt for 4 reels and all
system . For 1500 series on ly
$82.50
Jut monitoring amplifier and
·ions . For por table system . For
........... $4 7 .5 0
1·12BH7; 1·6X5GT
POWER REQUIRED ,
OUTPUT CONTROL,
Master gain contro ls mixed sig·
nal from all four chan nels simul·
taneous ly.
OUTPUT LEVEL
2 volts from cathode follower oul·
put. Zero OBM across 600 ohm line.
FI LAMENT SUPPLY,
D.C. on all filaments.
DIMENS IONS,
Mounted on 5% " x 19" relay
rack panel. Depth behind panel
mounting surface, 6 inches .
WEIGHT,
12 pounds without plug-in tra ns·
formers.
•
DISTORTION ,
Less than 1% total harmonic dis·
tortion at fuJi output.
SIGN AL TO NOISE RATIO,
Better than 55 db at full gain.
INPUT IMPEOANCE,
One megohm on high impedance
input. 50 /250 ohms with plug-in
input transformer # T3344.
INPUT SEN SITIVITY,
65 db below 1 volt will drive to
full output level.
INPUT CONTROLS,
Individual conlro l potentiometers
on all four channel s after seco nd
15 pounds with 5 plug· in tran s·
formers.
POWER REQUIRED ,
115 vol ts, 60 cyc les, 40 wat ts.
stage of amplification.
OUTPUT IMPED AN CE,
Cathode lollower. 600 ohm bal·
anced ou tput with plug·in output
FREQUENCY RESPON SE,
transfo rmer # T2560.
50·t5,OOO CPS ± 1 db.~_ _ _ _ __
MCM-2J BASIC MIXER, filled with 3-(onloct tele p hone
io(k~.
$ 1 37.5 0
MCM-2 C MIXER, fill ed wi th Cannon Xl connectors ...... . . S 145.00
160 watts, 60 cycles, 115 volts.
+
MC M-2 R MIXER, with pu sh. pull stage and transformer for
15VU
600 o hm out p ul a nd Connon Xl conn e ctors .
. $ 1 75 .00
BR- l BROADCAST RECORDER: 7 ril and 15 i.p.i. Complete. can~i~ ting of separate drive mec hanism and am plifier. Rock
panel or horizon to I mounting. single trock head1 SS4S .0 0
T- 3344 INPUT TRAN SFORMER : Full frequency response shielded
plug-in transform e r fo r matching high imp e dance in put
to 50/ 250 ohm microphones
...... $ 1 8 .0 0
BRDC· I CARRY IN G CAS E for Broodcost Dri ve Mechanism $62 . S0
T-2560 OUTPUT TR ANSFORMER : Full frequency res po nse p lug·in
transformer for ma tching cathode follow e r output to 600
ohm ba lanced line output
... $25.00
J
Jefferson
~'~'.'
MULTI-CHANNEL MIXER
WEIGHT ,
55 db on mi crophone input.
0.1 volt on bridging input.
----...
est
~
~
,-
BROADCAST RECORDER
n of 15"/ Sec. or
-
.
\~
BRAC- ! CARRYING CASE for Broodcos t Amplifier and Mul ti·Cho nnel Mixer
..... $62. 5 0
BR_2 BROADCAS T RECORDER : Some os SR· I , except wilh duol
S54S.00
trock heads
Elfective May IS, 1954
Boulevard·
Los
(
IPrices,'lIbjtlct to. ChOnge )
Without no lice!
Angeles
16, California
l -69 LO SS ER PAD: To attenuate high impedance high leve l
signoh to match microphone leve l. Attenua tion can be sci
01 zero db, 25 db, or 50 db
.. . $7.50
E- 47 PHONO EQUALIZ ER: Mat ches variob te rel uctance pick·up
10 microphone in p ut
... $7.50
CC - I CARRY ING CASE for Mixe r, MCM· 2
!-! /f'ttlt' ~ 1
HI
"~t1l1 f'
... $ 2 4. 50
I¥\IIJ 11/1
Y RADIO & TELEV I) IVI't
45th Stree\
60 Wert
~
New Vorl< 19, N. Y.
BROADCAST
TAPE RECORDER
AND ACCESSORIES
The new Berlant Broadcast Tape
Recorder and accessory line intro-
duces a history-making development
for the broadcast station and recording studio user.
Designed after years of intensive
research as to the needs and desires
of the professional, Berlant equipment
is destin ed to e stab lish new standards
for performance, d e pendability, and
economy of operation.
o
,\..
.._ e
~ ~e~~
--
,
.. . .'
~.......,
.-~
e
•
...G~~
RECORDERS
TWD·1 Dri ve mech anism in TWDC case
SPECIFICATIONS
TAPE SPEED S, Instant selection 0115"/ Sec. or 7.5" / Sec.
Also available at 7.S" / Sec. and 33A" j Sec.
FREQUENCY RE SPONSE, Usable response from 20 to 20,000 cps.
± 2db from 40 to 15,000 cps. at 15"/ Sec.
± 4db from 40 to 15,000 cps. at 7.5"/ Sec.
SIGNAL TO Not SE RATIO, 55db as measured by proposed NARTB
standard (400 cps. at 3% T.H,D')
TOTAL HARMONIC DI STORTIO N, 2% at Zero V.U.
TOTAL FLUTTER AND WOW, Less than 0.1% RMS at 15"/ Sec.
Less than 0.2% RMS at 7.S" / Sec.
REWIND AND FAST FORWARD , Less than 60 secs. for 2500 feet.
FROM STOP TO !5" / SEC., 0.1 second.
HEAD MOUNTING: Interchangeable Bracket mounting up to riVE heads
METER INDICATIONS, Bias current , record level, output level.
MONITOR OUTPUT, From tape or input signa l.
SIGN AL MI XING, Variable from line and Microphone.
INPUT IMPEDANCE: One megohm on high impedance microphone input.
50 / 250 ohms balanced or unbalanced with plug·in transforme r
"T·3344.
200,000 ohms unbalanced bridging input.
INPUT SENSITIVITY, I MV on microphone input
.06 volt on bridging input
OUTPUT IMPEDANCE, Cathode follower or 600 ohms balanced output
with plug·;n transformer =T·2560.
OUTPUT lEVEL: 6 volts from cathode follower output.
Zero OBM across 600 ohm line.
FILAMENT SUPPLY, D.C. on alililaments.
DIMENSIONS, Drive mechanism. 14",19"
Mounting depth, 6W' below pane l
Amplifier, SlA " x19" , mounting depth 6" below ·panel.
WEIGHT: Drive mechanism, 35 Ibs. - Amplifier, 10 Ibs.
TUBE LIST, 2-12AX7. 1-12AT7. 2·12AU7 , 1-12BH7, 1·6XSGT.
POWER REQUIRED, 220 Watts, 60 cycles. 115 volts.
OUTSTANDING FEATURES
FIVE HEADS
Provision for two more than
the three standard heads permits a combination of Single
and dual track ope rations. An
additional amplifier makes
both monaural and binaural
recordings possible.
UNIFIED CONTROL
One simple convenient error·
proof lever system. Fast forward and rewind speeds comple tely variable.
A-B TEST FADER
Monitors during recording be·
tween incoming signal and
tape outpu t without tran·
sients or clicks. Separate
playback volume control wh ile
recording.
TWO·CHANNEL MIXER
Through built-in circuit ry line
signa l can be mixed with mic·
rophone input and both recorded on tape simulta n·
eous ly.
LITHO IN U . S . A .
CA- 20/ 20 ·1- 4oM
STAND·BY CONNECTIONS
Permit signal source to feed
directly into power amplifier
and speake r when recorder is
not in use.
TH REE MOTORS
For minimum wow and flut·
ter. Two saeed ciloacilor in·
duction motor for direct drive.
Shaded pole lake·up and sup·
ply motors.
COLOR SCHEME
Specially designed for home
installation.
AND IN ADDITION ,
Simplified cueing and ed iting.
Acc idental erasure el iminated.
Signal level meter.
Straigh t line threading.
Adjustable bias.
Automatic cutoff switch.
Improved reel locks.
Operates in any position.
TWA-! Amp lifi er in TWAC case
USER'S NET FAIR TRADED PRICES
TWR-2
TWR·!
TWR-3
STWA
TWoC
TWAC
TWoA
TWA·!
CT-!
CT·3
CB·3
CB -5
T-3 344
T·256o
20/ 20 RECORDER , 71/, and IS i.p.s. Comp lete,
consisting of separate drive mechanism and
amplifier. Vertical or horizontal mounting, dual
track heads (Without cases) ..................................$445.00
20/20 RECORDER , same as TWR·2, except with
single track heads .................................................. $470.00
20 / 20 RECORDER : same as TWR-2, except for .~
33J.: and 71/2 i.p.s. tape speeds .............................. $445.00
20 / 20 STEREO· MONAURAL RECORDER , with addi·
tional ampl ifier unit. 2·channel "stacked" heads
~"$7..Jl
I,
ell
~~~Rn~~e~s~ist;~~g20/20d;i;~ ~~~h;;i;~:~6~; ~~
..
\
CARRYING CASE, for 20/ 20 ampllf"r ....................$~24.5o)
CARRYING CASE, for 20/ 20 drive and amplifier .... $ 67.50
20/ 20 AMPLIFIER UNIT, for stereo· monaural
operat ion ...... ............................................................ $180.00
SINGLE 1RACK ERASE HEAD ..................................$ 27.S0
SINGLE TRACK RECORO HEAD ................................$ 27.SO
STEREO·BINAURAL RECORD HEAD .......................... $ 37.S0
STEREO-BINAURAL PLAYBACK HEAD ................ ...... $ 37.50
TRANSFORMER , plu g·in type for SO;2SO ohms
input. ba lance d or unbalanced ..............................$ 18.00
TRANSFORMER, plug·in type for 600 ohm bal·
anced output ........... ..... ......... .................
........ $ 25.00
'B~~~tpnrillDlle
4 917 W es t J eff e rs on Blvd.,
lo s Ang e les 16, Calif.
'
THE CONCERTONE 20/20 RECORDER
As the phenomenal growth of tape recording continues and
recorder owners become more and more exacting, it behooves
the manufacturer to see to it that he keeps pace with these
increasing requirements.
It has been the constant aim of Berlant Associates to produce
a tape recorder of the highest possible quality at a price that
the average music lover and sound enthusiast could afford to
pay. It is this determination that has brought Concertone to
such a dominant position in the recording industry. Year by
year we have incorporated improvements in design and work·
manship whenever it was possible to make a better Concertone
by doing so.
In the meantime Mr. 8ert Berlant and his engineering staff
have been engaged in a long-term project, the development of
an entire ly new type of recorder that would not only keep up
with the amazing progress of the recording art, but would lead
the way to new standards of simplicity, dependability and per.
formance.
For more than two and a half yea rs they have designed,
tested, disca rded, stud ied, redesigned, retested , disagreed, ar·
gued, restudied ... and so on through many such cycles until
they came up with what has aptly been called "the answer to
the audiophile's prayer"-The Concertone 20/20!
Out ahead of it, as a so rt of advance_ guard, came another
model, a strictly professional job, the Berlant Broadcast Re·
corder, BR·!. Introduced last May in Chicago, it proved to be
the sensation of the National Electronic and NARTB Shows.
Its price of $545 for a machine that surpassed in versatility
and performance record ers selling for two and three times that
much left competitors gasping.
It can now be revealed how our engineers took a page from
the book of General Motors and the other giants of the auto·
motive industry, which cut costs enormously by stamping out
body shells and casting many of the parts for their various
lines of cars from the same set of dies. We decided to do
the same with the Broadcast Recorder and the 20/ 20.
Only by spreading the cost of the many precision dies over
both lines of· machines could we give you so much for lour
money. Most of the parts, therefore, in the 20/ 20 are iden ical
with those in the Broadcast. On ly such compon ents as motors
and the ex.terior finish are different. Tha t is the explanation
why the Concertone 20/20 is the ultimate in the high fidelity
field-a truly professional recorder at a fraction of the price
of any comparable model.
If you need further proof, iust read the accompanying speci.
fications.
'.
TO THE AUDIOPHILE ...
Compare this machine, point by point,
with any other recorder on the market.
You will find it ideally suited to yoW' needs,
PLUS
EXCLUSIVE FEATURES
UNISYNC DRIVE
Thi s radical improvement in design brings a new slandard of
quality to soun d record in g. An
integral unit, cons isting of an
"inside out" hysteresis synchronous motor, fl y-wheel and blower
provides a cooler, lighte r ,
smoother drive than has been
previously possib le.
SPECIFICATIONS BR·1
TAPE SPEEOS ,
Instant selection of 15" ISec. or
7.S II/ Sec.
FREQUENCY RESPONSE ,
± 2 db from 40 to 15,000 J.P.S.
at 1511 I Sec.
± 2 db Irom 40 to 10,000 J.P.S.
at 7.SII/ Sec.
StGNAl TO NOISE RATIO ,
55 db as measured by proposed
NART8 slandard (400 J.P.S. at
3% T.H.D.l
TOTAL HARMONIC OISTORTlON ,
2% at zero V.U.
TIMI NG ACCURACY ,
Better than 99.8%.
TOTAL flUTTER AND WOW ,
FIVE HEADS
Instead of the usual three heads,
the 8R·} can accommodate up to
five. This permits playback of a
delayed broadcast while record·
ing an incoming program on the
same tape. Single and dual track
operation of one re corder is also
poss ible.
Less than 0.1% RMS at ISI// Sec.
less than 0.2 % RMS at lS'/ Sec.
REWIND AND FAST FORWARD ,
less than 60 sees. for 2500 feet.
FROM STOP TO 15"/ SEC.,
0.1 second.
HEAD MOUNTING ,
Interchangeab le Bracket mount·
ing up to FIVE heads.
METER INDICATION ,
Bias cur rent , record level, output
UNIFIEO CONTROL
All operations of the recorde r
are combined in a single, convenient error-proof leve r system.
Tape handling in fast forward and
rewind can be at any speed from
zero to full spooling. This permits
rapid location of any desi red
section of tape.
level.
MONITOR OUTPUT ,
From tape or input signal.
INPUT IMPEDANCE ,
One megohm on high impedance
microphone input. 50/ 250 ohms
balanced or unbalanced with
plug in transformer #T·3344.
200,000 ol1ms unbatanced bridg·
ing input.
A·B TEST FADER
An exclusive method of fading
from the incoming signal to playback from the tape elim ina tes all
clicl~s and noises previously inherent in such A·8 tests.
INPUT SENSITIVITY ,
55 db on microphone input.
0.1 volt on bridging input.
OUTPUT IMPEDANCE ,
Cathode follower. 600 ohms bal·
anced output with plug in trans·
former # T2560.
OUTPUT lEVEL ,
2 volls from ca th ode follower
output.
Ze ro OBM ac ross 600 ohm lin e.
FILAMENT SUPPLY ,
D.C. on all filaments.
DIMENSIONS,
Dr ive mechanism, 14"x 19/1.
Mounting Depth, 6/1 below panel.
Amplifier, SIA"x 19" .
Mounting depth, 6/1 below panel.
WEIGHT,
Drive mechanism, 3S lbs.
Amplifier,
10 l bs.
TUBE LIST,
2·12AX7; 1·12AT7; 2·12AU7;
1·12BH7; 1-6X5GT
POWER REQUIRED,
160 watts, 60 cyc les, 115 volts.
BERlANT ASSOCIATES
Manufacturers of Concertone
4917 West Jefferson Boulevard,
Los Angeles 16, California
nUT .'U T
BR·1
PROFESSIONAL USER NET PRICE
Broadcast Record er : 7V, anol5 i.p.s. Com·
plete, consisting of separate drive [!lecha·
nism and amplifier. Rack panel or horizontal
mounting. Single track heads
... $545.00
BRDC·1 Carrying Case for Broadcast
Drive Mechanism .... . .. . .. .....
47.50
BRAC·1 Carrying Case for Broadcast Amplifier and
MCM·2 Multichannel Mixer. . . . . .
47.50
distributed by,
CUEING AND EDITING
The cuein g position of the BR·l's
unified control places the tape
in contact with the heads and
releases the brakes so that the
reels can be rotated by hand
whil e l istening to the signa l.
When the exact cue point is
re ac hed , the cont rol lever is
swi tch ed to editing position,
opening the head cover for easy
access to the tape.
ERASE SAFETY
Positive interlock of record system with the control leve l makes
acciden tal erasure impossible.
SIGNAL LEVEL INDICATOR
An extremely accurate and stab le
VTVM circuli measures bias
level. The 4'12" illuminated meter
is a dependable guide to the
opera tor at all times.
STRAIGHT LINE THREADING
Qui ck and simp le loading is
achieved by straight line threading of the tape , which , in operatio n, is complete ly entrapped
with in hardened ground guides.
Striction effects, amplitude var iations and tracking efror are
reduced be low any former
standards.
TENSION ARMS
Unique design of the tension
arms makes for fa ci lit y in loading and prope r filtering of disturbances in th e tape motion.
THREE MOTORS
Combined wit h the new Unisync
Drive are two expertly engineered, heavy duty torque motors
for proper tape motion in record,
playback, fast forwa rd and rewind
positions.
ADJUSTABLE BIAS
A bias level adjustment with ade·
quate reserve pe rmits resetting
bi as to suit spec ial requirements
of various tape coatings for per·
fection in recording .
AUTOMATIC CUT·oFF
In case of tape breakage or runout, recorder is automatically
turned off.
REEL LOCKS
The Berlant " Reel ok" of original
des ign positively fa stens all sizes
of reels, including the 10%"
NART8, without use of adapters.
MAINTENANCE
The combination of unitized con·
struction with plu g·in conn ectors
and open access to all com ponents, coup led with freedom
from bells, clutches or pu ll eys,
resu lts in simplicity of maintenance unequalled in any other
recorder now avai lable.
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ANSWERS THE NEED
In a nation-wide questionnaire
the chief engineers of radio sta·
tions and recording studios were
asked to set the specifications
tor the ideal professional tape
'"
recorder.
They did. " " THIS IS IT!
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PERFORMANCE
Every requirement of frequency
response , freedom from distortion, stability of motion, dynamic
range , timing accuracy and tape
handling ability is met and exceeded by this recorder at both
tape speeds .
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DEPENDAB ILITY
Designed and built for continuous
operation under the most rigorous
conditions, this recorder combines rugged components and
advanced engineering to guar-
antee max imum dependabili ty
with minimum maintenance.
SIMPLICITY
New concepts in design, construc-
tion and operation result in a
functiona l simplicity that is reflected in the recorder's performance, dependability and last, but
not least - economy_
To the Engineer:
Compare this machine, point by
point, with any other recorder on
the market, regardless of price.
You will find it the ideal recorder
for your needs.