Manley Labs MONOBLOCK AMPLIFIER owner manual Output B+ Mains IEC Mains RCA Fuses

INPUT	OUTPUT B+ MAINS		IEC MAINS
RCA		FUSES	IN

1	3		5		6	8	10
	2	4	6414	6414	7		9
				12AT7

Amplifier Overhead View

Tube Location

OUTPUT TUBES:10 x RUSSIAN EL34G

The EL34 type we recommend are the Russian up-rated EL34G. This has been proven to be the most rugged and reliable of this type and we strongly emphasize that only the RUSSIAN EL34G's should be used in this amplifier. The MANLEY 250/100 WATT MONOBLOCK has been thoroughly optimised around this tube. Use of unapproved tube types can and will void your warranty. We have selected the tubes for equality of current draw in our custom-built computerized tube tester for each of your monoblocks . Although each tube bias can be individually adjusted, "batched" tubes as we have selected are thouroughly beneficial to the amplifier's performance.

DRIVER TUBES: 1 x 6414

The 6414 is an American military uprated version of the 12BH7A with increased current drive.

INPUT TUBE: 12AT7WA

The 12AT7WA has several equivalent numbers, (12AT7, 12AT7A, 6201, ECC81, etc.) Any of these types may be used. We have selected this 12AT7WA very carefully for noise, microphonics, and constancy.

Replacement tubes of premium quality are always available from MANLEY LABORATORIES.