Manley Labs Mid Frequency Tube Equalizer
This single channel Mid Frequency EQ is the secret weapon for vocal, guitar, snare and all the other midrange instruments that are the meat of the mix.
- MANLEY input transformer with pure nickel laminations potted in mu-metal case. 3K Ohm input Z
- PHASE REVERSE switch for balanced XLR input
- Alternate transformerless 1/4″ HI-Z (5K Ohm) input
- BYPASS switch & AUTO-MUTE w/warmup delay
- Silent conductive plastic PEAK & SHELF controls
- Sealed gold-contact Greyhill frequency select switches
- Hi-current drive <50 Ohm LO-Z XLR & 1/4″ outputs
- Balanced Transformer Coupled XLR Outputs
- Flat frequency response from 10Hz-70KHz
- <0.01% THD @ 1kHz
- S/N Ratio: 116 dB
- Adjustable FEEDBACK / GAIN: Unity ±5 dB
- Max. output: +30 dBv
- Power consumption: 18 watts
- Operating mains voltage: Units are purpose built for original destination country’s mains voltage: 100V, 120V, or 220-240VAC as indicated on the serial number badge. Power transformer must be replaced in order to change mains operating voltage. 120VAC units may NOT be rewired to put the primaries of the power transformer in series for 220-240V operation or a large radiated field of hum will develop. If changing locations/voltages, the power transformer must be replaced with the dedicated one for the voltage at which it will operate.
- Mains Voltage Frequency: 50~ 60Hz
- Dimensions: 19″ x 1 3/4″ x 10″ (occupies 1u)
- Shipping weight: 12 lbs
We started building the MANLEY Enhanced Pultec EQ’s in 1990 back at the old Vacuum Tube Logic of America factory. They were built there from 1990 until 1993 when the MANLEY LABS factory opened. The serial codes for those old early 1990’s units are usually seen as hand-written ENHPLT###. Those oldest units use 5814 input tubes and 6350 output White Follower tubes. There is no substitute for a 6350! Unless you re-wire and swap pins 2&3 and 7&8 then you must keep using 6350 which is wired that way. Those old units also used ElectroSwitch brand NONshorting switches which are brass and black and white in body-of-the-switch color. They make some noise when switch position is changed. They should have been ordered as SHORTING switches. Newest units built at Manley Labs use shorting Grayhill brand switches. Grayhills have red bodies if you look at them.
Much has improved since those early days… Here is what we think was the very first Manley Pultec built in 1990 for BOP Studios in South Africa.