| Manufactured by: |
H. J. Leak & Co.,
Ltd Brunel Road, Westway Factory Estate, London W3 |
| Price when new (in the UK): |
£18 18s. In the USA, $153.70 for
the TL/12 only and $192 including the preamplifier (1951 Allied
Radio) |
| Total harmonic distortion: |
0.1% at 10 Watts output (± 1dB)
at 1,000 c/s |
| Loudspeaker impedances: |
any impedance between 3 and 20 -
output transformer adjustable for 16, 8 & 4 |
| Hum and noise: |
82 Db, ± 3dB, below
12 watts with a source impedance of 25K |
| Input sensitivity: |
an input of 125mV at 1,000 c/s gives 12
watts output |
| Input impedance: |
1M,
plus approximately 5 mmfd |
| Damping factor: |
25, measured at 1,000 c/s |
| Tubes: |
First stage:
|
EF86 (Z729 or 6267) |
| Second stage: |
ECC81 (B309 or 12AT7) |
| Output stage: |
Two EL84 (N707 or 6BQ5 |
| Rectifier |
GZ34 (5V4 or 5AR4) |
|
| Stability margins: |
gain - 10dB ± 3dB; Phase - 20°
± 10° |
| Dimensions: |
10 x 11 x 6 ins (254 x
200 x 152 mm) |
| Power supply: |
200 - 250 Volts AC 50-100
c/s; consumption 75 watts (80 watts with Leak preamplifier
attached) |
