Q U A LIT Y MA G N E T IC S SIN C E 1979
CM-2810
Vacuum tube output transformer
4:1 turns ratio 9.6K:600
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•
•
•
•
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Vacuum tube line amplifier output
Economical design for OEM applications
50% high-nickel + 50% steel core for warm sonic characteristics
Very good bandwidth (- 0.3 dB at 20 kHz)
Good CMRR: 85 dB at 60 Hz
0.05% THD at -10dB input level
The CineMag CM-2810 output transformer has a 4:1 turns ratio and is intended for OEM products. It is
available standard with p.c. pins. It has very good bandwidth and good common mode rejection ratio
(CMRR). The 50% high-nickel plus 50% steel lamination core gives it warm sound qualities.
CM-2810
Parameter
Conditions
Typ
Turns Ratio
Voltage Gain
4 : 1 (9.6K:600)
1 kHz, Rs=600 RL=600 Test Circuit 1
Input Im pedance
-12 dB
Test Circuit 4
9537Ù
Distortion (THD+N%)
1 kHz, +28 dBu
20 Hz, +20 dBu
Test Circuit 1
Test Circuit 1
Max 20 Hz input level
1.0% THD;
Test Circuit 1
Response, ref 1 kHz
10 Hz Rs=600
20 kHz Rs=600
-3 dB
Test Circuit 1
Test Circuit 1
Phase Shift at 20 Hz
Phase Shift at 20 kHz
Referenced to source generator
Rs=600
Test Circuit 1
+0E
-16E
CMRR
60 Hz Test Circuit 3 per IEE Std 389-1996 ¶19
1 kHz Test Circuit 3 per IEE Std 389-1996 ¶19
87 dB
84 dB
Operating Tem p Range
Operation and storage
Max Soldering Tem p (p.c.)
>+34dBu in
[>+22dBu out]
-0.01 dB
+0.05 dB
65 kHz
0E C Min
10 Seconds
9050 Independence Ave. Canoga Park, California 91304
REV A
0.007%
0.03
70E C Max
270EC Max
F(818) 993-4644 J (818) 993-4604
http://www.cinemag.biz
Copyright 2010 CineMag Inc. All rights reserved
CM-2810 4:1 Output
+1
Rs=600 RL=600
Amplitude
+5
+0
+0
-5
-1
-5
-10
-2
-10
-3
-15
-4
-20
-0
CM-2810 CMRR Rs-600 RL=600
-15
-20
-25
-30
-5
d
B
u
-25
Phase
-6
-30
-7
-35
-8
-40
-35
-40
d
e
g
-45
d
B -50
u
-55
-9
-45
-10
-50
-11
-55
-12
-60
-13
-65
-14
-70
-15
-75
-16
-80
-95
-17
10
-85
-100
20
-60
-65
-70
-75
20
50
100
200
500
1k
2k
5k
10k
20k
50k
100k 200k
-80
-85
-90
50
100
200
500
CM-2810 THD vs Frequency Rs=600 RL=600
1
1k
2k
5k
10k
20k
Hz
Hz
CM-2810 THD vs Amplitude Rs=600 RL=600
1
0.5
0.5
0.2
0.1
0.2
0.05
0.1
+0dBu
0.02
%
%
+7dBu
0.01
0.05
0.005
20Hz
+14dBu
+21dBu
0.002
30Hz
0.02
40Hz
50Hz
+28dBu
0.001
60Hz
0.01
0.0005
0.0003
20
50
100
200
500
1k
2k
5k
10k
20k
0.006
+0
+5
+10
+15
+20
+25
dBu
Hz
NOTES:
1.
All graphs generated from one (1) randomly chosen device. No statistical averaging or weighting.
Data from one sweep.
CM-2810
300
300
CM-2810
OUT HI
BRN/5
ORG/8
OUT HI
BRN/5
ORG/8
300
600
600
YEL/11
300
YEL/11
RED/2
RED/2
OUT LO
TEST CIRCUIT 1
OUT LO
TEST CIRCUIT 2
CM-2810
CM-2810
BRN/5
600
300
ORG/8
V
YEL/11
RED/2
BRN/5
ORG/8
Zin
V
YEL/11
300
RED/2
TEST CIRCUIT 3
600
TEST CIRCUIT 4
1.94
49.3mm
1.65
41.6mm
2.39
60.7mm
1.25
31.75mm
0.72
18.4mm
2.00
50.8mm
1.50” / 37.5mm
PIN 1
0.20”
PIN 6
5.1mm
1.90”
48.3mm
PIN 12
PIN 1
1.60”
40.6mm
1.10” / 28mm
CANOGA PARK, CA USA
1.58”
40mm
CM-2810
PIN 12
0.30”
7.6mm
”
35
0.0 mm
5
0.8
PIN 1
Copyright 2011 Cinemag, Inc. All rights reserved.