Manley 60 dB User Manual

WARRANTY REGISTRATION

We ask that you please fill out this registration form and send the bottom half to:

MANLEY LABORATORIES
REGISTRATION DEPARTMENT
13880 MAGNOLIA AVE.
CHINO CA, 91710

Registration entitles you to product support, full warranty benefits, and notice of product
enhancements and upgrades. You MUST complete and return the following to validate your
warranty and registration. Thank you again for choosing Manley Laboratories.

MODEL ____________________ SERIAL No. ______________________

PURCHASE DATE ______________ SUPPLIER ______________________

--------------------------------------------------------------------------------------------------------

PLEASE DETACH THIS PORTION AND SEND IT TO MANLEY LABORATORIES

MODEL ____________________ SERIAL No. ______________________

PURCHASE DATE ______________ SUPPLIER _______________________

NAME OF OWNER _______________________________________________

ADDRESS ______________________________________________________

CITY, STATE, ZIP ________________________________________________

TELEPHONE NUMBER ___________________________________________

Serial #'s of Associated Manley Laboratories Equipment ___________________

________________________________________________________________

WARRANTY

All Manley Laboratories equipment is covered by a limited warranty against defects in materials
and workmanship for a period of 90 days from date of purchase to the original purchaser only. A
further optional limited 5 year warranty is available to the original purchaser upon proper
registration of ownership within 30 days of date of first purchase.

Proper registration is made by filling out and returning to the factory the warranty card attached to
this general warranty statement, along with a copy of the original sales receipt as proof of the
original date of purchase. Only 1 card is issued with each unit, and the serial number is already
recorded on it.

If the warranty registration card has already been removed then this is not a new unit, and is
therefore not warranted by the factory. If you believe this to be a new unit then please contact the
factory with the details of purchase.

This warranty is provided by the dealer where the unit was purchased, and by Manley Laboratories,
Inc. Under the terms of the warranty defective parts will be repaired or replaced without charge,
excepting the cost of tubes. No warranty is offered on tubes, unless:

1. a Manley Laboratories preamplifier is used with a Manley Laboratories amplifier, and

2. the warranty registration card is filled out.
In such a case a 6 month warranty on tubes is available with the correct recording of the serial

number of the preamplifier on your warranty registration card.
If a Manley Laboratories product fails to meet the above warranty, then the purchaser's sole

remedy shall be to return the product to Manley Laboratories, where the defect will be repaired
without charge for parts and labour. The product will then be returned via prepaid, insured freight,
method and carrier to be determined solely by Manley Laboratories. All returns to the factory must
be in the original packing, (new packing will be supplied for no charge if needed), accompanied by
a written description of the defect, and must be shipped to Manley Laboratories via insured freight
at the customer's own expense. Charges for unauthorized service and transportation costs are not
reimbursable under this warranty, and all warrantees, express or implied, become null and void
where the product has been damaged by misuse, accident, neglect, modification, tampering or
unauthorized alteration by anyone other than Manley Laboratories.

The warrantor assumes no liability for property damage or any other incidental or consequental
damage whatsoever which may result from failure of this product. Any and all warrantees of
merchantability and fitness implied by law are limited to the duration of the expressed warranty.
All warrantees apply only to Manley Laboratories products purchased and used in the USA.

Some states do not allow limitations on how long an implied warranty lasts, so the above
limitations may not apply to you. Some states do not allow the exclusion or limitation of incidental
or consequential damges, so the above exclusion may not apply to you.

This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.

SPECIFICATIONS

Vacuum Tubes: 1 x 6072A, 1 x 12AU7, 1 x 6350

Gain with variable feedback set at 0 adjustable up to 75 dB

Input Inpedance 200 Ohm, transformer coupled 1:8

Output Impedance 120 ohms

Frequency Response (+/- .5 dB) 20 Hz - 80 KHz

T.H.D. @ 60 dB 0.20%

Power Consumption 24 Watts

OPERATIONAL NOTES

SWITCHING ON

The power switch is located on the right hand corner of the front panel. Flip the switch up to turn on
the preamplifier and down to turn off the preamplifier.

RUNNING

It is not recommended that you leave your preamplifier permanently switched on. This only wastes
electricity and tube life. Your preamplifier has solid state rectification and reaches peak operating
condition in approximately 30 minutes.

TUBE LIFE

As with all tubes, their quality degrades with age. This is due to cathode emission, a natural process
found in all tubes. We recommend that you have your preamplifier checked every 4-5 years,
depending on usage, usually the preamplifier will require re-tubing after this time has elapsed.
Increased noise or tube "rush" is an indication that you should retube. Premium selected tubes can
always be purchased at Manley Labs, and at very reasonable prices too!

SPECIAL NOTES

The 60 dB Microphone Preamplifier is optimised for use with dynamic or ribbon mics or other lower
output microphones or low level programme material. We also build excellent 40dB mono and dual­mono (2 channel) versions which suit most of the popluar condensor mics under normal recording
conditions. Ask your dealer or us here at Manley Labs which model is right for your needs. We are
always happy to provide you with technical assistance.