| • POUT |
RMS audio output
power for rated frequency bandwidth |
| • ZPRI |
Total primary
impedance with nominal rated load; ZA on single-ended
units; |
| |
ZAA
on push-pull units |
| • IRATED |
DC current
rating for SE winding, or for each side of push-pull winding |
| • ESIGNAL |
Peak audio
signal voltage across full SE winding or each half of push-pull
winding |
| |
for rated audio
output |
| • ISIGNAL |
Peak audio
signal current through full SE winding or one half of push-pull
winding |
| |
for rated audio
output |
| • VSUGG |
Suggested DC
plate supply voltage; SE assumes cathode-biased operation: |
| |
PP assumes
fixed-bias operation |
| • VA |
Minimum plate
supply power requirement |
| • Mass |
Weight in pounds;
old tabled value; most units are slightly lighter at the time of
writing |
SE Single Ended 100-15kHz �1dB
| Ham# |
POUT |
ZPRI |
IRATED |
ESIGNAL |
ISIGNAL |
VSUGG |
VA |
Mass |
| 125ASE |
3WRMS |
2,500
ΩA |
25mADC |
123Vpk |
49mApk |
174VDC |
8.7VA |
0.2 lbs |
| |
|
5k ΩA |
" |
173Vpk |
35mApk |
246VDC |
8.7VA |
|
| |
|
10k ΩA |
" |
245Vpk |
25mApk |
346VDC |
8.7VA |
|
| 125BSE |
5WRMS |
2,500 ΩA |
45mADC |
158Vpk |
63mApk |
224VDC |
14.2VA |
0.3 lbs |
| |
|
5k ΩA |
" |
224Vpk |
23mApk |
316VDC |
14.2VA |
|
| |
|
10k ΩA |
" |
316Vpk |
32mApk |
448VDC |
14.2VA |
|
| 125CSE |
8WRMS |
2,500 ΩA |
60mADC |
200Vpk |
80mApk |
283VDC |
22.7VA |
0.5 lbs |
| |
|
5k ΩA |
" |
283Vpk |
57mApk |
400VDC |
22.7VA |
|
| |
|
10k ΩA |
" |
400Vpk |
40mApk |
480VDC |
22.7VA |
|
| 125DSE |
10WRMS |
2,500 ΩA |
70mADC |
224Vpk |
90mApk |
316VDC |
28.4VA |
1.0 lbs |
| |
|
5k ΩA |
" |
316Vpk |
63mApk |
448VDC |
28.4VA |
|
| |
|
10k ΩA |
" |
448Vpk |
45mApk |
550VDC |
28.4VA |
|
| 125ESE |
15WRMS |
2,500 ΩA |
80mADC |
273Vpk |
110mApk |
386VDC |
42.5VA |
1.5 lbs |
| |
|
5k ΩA |
" |
386Vpk |
77mApk |
546VDC |
42.5VA |
|
| |
|
10k ΩA |
" |
546Vpk |
56mApk |
672VDC |
42.5VA |
|
tapped secondary, see
diagram
 
SE Single Ended 20-20kHz ± 1dB at rated output
| Ham# |
POUT |
ZPRI |
IRATED |
ESIGNAL |
ISIGNAL |
VSUGG |
VAMIN |
Mass |
| 1627SE |
25WRMS |
2,500 ΩA |
160mADC |
353Vpk |
141mApk |
500VDC |
70VA |
11 lbs |
| 1628SE |
25WRMS |
5,000 ΩA |
120mADC |
500Vpk |
100mApk |
700VDC |
70VA |
11 lbs |
| 1629SE |
25WRMS |
6,500 ΩA |
100mADC |
570Vpk
|
88mApk |
800VDC
|
70VA |
11 lbs |
| 1640SE |
25WRMS |
1,250 ΩA |
200mADC |
250Vpk |
200mApk |
353VDC |
70VA |
11 lbs |
| 1642SE* |
75WRMS |
5,000 ΩA |
300mADC |
866Vpk |
173mApk |
1k2VDC |
212VA |
28 lbs |
*no UL tap; 4-8-16
taps on single secondary, see diagram
 
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