Lavry MP10 Manuale utente

LavryBlack Series

Model MP10

Stereo Microphone Preamplifier

Lavry Engineering, Inc.

P. . Box 4602

Rolling Bay, WA 98061

http://lavryengineering.com

email: tech[email protected]m

Version 1.0

September 5, 2008

M DEL MP10

The LavryBlack MP10 features:

Ultra-low noise and distortion for transparent sound

Precise matching of channels ideal for stereo recording

High-Low impedance switch to match inputs to Ribbon or Condenser and Dynamic Mic’s

Individually controllable Phantom Power for each channel.

Large wide-range meter -42 to 0 dB

Gain adjustable in 1 dB steps from 20-75 dB

High gain for low output Ribbon microphones

Gain adjustment by digitally controlled analog circuitry for sonic purity

Balanced or unbalanced outputs

C NNECTI NS (Rear Panel)

MICR PH NE INPUTS:

Connect microphones with XLR cables to the Microphone inputs. There is a “hi z/lo z” switch

located between the two input connectors. This allows the input impedance of both channels to

be matched to the type of microphones being used. For example- “lo z” would be used for

Dynamic and Condenser microphones and “hi z” would be used for Ribbon Mic’s. The inputs are

a transformer-free electronically balanced design for accurate and extended bass response with

excellent rejection of unwanted hum and noise.

ANAL G UTPUTS:

The transformer-free electronically balanced outputs are capable of +24dBu peak level or +18dBu

when set for unbalanced operation. Connect the outputs to balanced inputs using XLR cables.

For unbalanced inputs, use either adapters or adapter cables and set the “unbal/bal” switch to

“Unbal.” The output will be unbalanced “Pin 2 Hot” when the switch is in the “unbal” position.

AC P WER:

The MP10 automatically adjusts to AC power inputs in the range of 90 to 264 Volts AC and line

frequencies between 47 and 63 Hertz. There are no settings to change.

PERATI N:

A. Front Panel

The MP10 has three toggle switches on the front panel. There is an individual gain

adjustment for each channel, and a three position toggle switch to enable or disable the

phantom power for each channel. Large numeric digital displays show both the level

during normal operation, and back panel settings on power-up. There is also a wide

range LED level meter to facilitate gain setting and display possible overloads.

B. AC Power Switch and Initialization

The AC power switch is used to turn the power “ n” or “ ff” on the MP10. When

powered on, the unit initializes for about 10 seconds. During initialization, the gain

displayed by the numeric digital displays start at a minimum setting, then “ramp up” to the

levels that were set before the power was turned “ ff.” The numeric displays then switch

to displaying the settings of the rear panel switches while the meter display “scans”

through the segments. nce initialization is complete, the numeric displays revert to the

gain display.

C. Gain

The gain is adjustable for each channel in one dB steps from 20 to 75 dB. Use of a

digitally controlled analog gain circuit allows for precise adjustment and reset-ability,

while maintaining outstanding low-noise and distortion characteristics over a very wide

range of gain. The left channel gain is adjusted using the toggle switch labeled

“Up/Down” to the left of the LEFT GAIN display, and the right channel is adjusted using

the toggle switch labeled “Up/Down” to the right of the RIGHT GAIN display.

The wide gain range accommodates both the vast majority of microphones available and

output levels suitable for both unbalanced “-10” and balanced “+4” level inputs. When the

output switch is set to “unbal,” the maximum output level is reduced by 6 dB from the

maximum level for balanced operation of +24 dBu. Even so, when feeding the output of

the MP10 to an unbalanced “-10” level input, care should be taken to set the gain so that

the peak signal level displayed on the MP10’s meter does not exceed “-6.” This

corresponds to the (approximate) 12 dB difference between the peak level for a “+4dBu”

and “-10dBV” signal. Exceeding this level when feeding a “-10” input may result in

clipping at the input stage of the “-10” device.

D. Meters

The output level is displayed on two 14 segment LED meters covering the range from -46

to 0 dB’s below peak output level. For balanced outputs peak level is +24 dBu, and for

unbalanced outputs peak level is +18 dBu.

E. Phantom Power for Condenser Microphones

The three position momentary toggle switch located between the two numeric GAIN

displays (labeled “phan.”) is used to select +48V Phantom power for each channel,

individually. Clicking the switch once in the up direction will enable or disable the

Phantom power on the left channel, and clicking the switch once in the down direction

toggles the right channel Phantom power on or off. The decimal point in the GAIN display

of the appropriate channel illuminates when the Phantom power is enabled.

F. Impedance Switch

There is a toggle switch labeled “hi z” or “lo z” located on the back panel between the

input and output XLR connectors. The “lo z” position should be used for low impedance

Dynamic or Condenser microphones, and the “hi z” position optimizes the input

impedance for Ribbon microphones. When AC power is applied, the setting of this switch

is displayed in the right GAIN display during initialization.

G. Balanced/Unbalanced Switch

The XLR outputs of the MP10 are electronically balanced and should not be connected to

an unbalanced input without first setting the rear panel switch to “unbal.” Doing so will not

cause damage to the amplifiers, but will raise the distortion level of the outputs

significantly. The switch is located between the two sets of XLR connectors and is

labeled “bal” and “unbal.” The peak output level is reduced from +24 dBu to +18dBu

when the switch is set to “unbal.” After AC power is applied, the setting of this switch is

displayed in the left GAIN display during initialization as “ba” for balanced and “Ub” for

unbalanced.

SPECIFICATI NS:

Distortion- Measured at -3dBFS (21dBu) at 1kHz, 10kHz, &20kHz:

Gain Setting 20 Less than 0.00070%dBFS

Gain Setting 40 Less than 0.00090%dBFS

Gain Setting 60 Less than 0.00800%dBFS

Noise- Input referenced noise at Gain Setting 40 with -999dBr input

150 hm source Less than -124dBu (Unweighted)

Less than -127dBu (A-Weighted)

Inputs- Transformer-free electronically balanced Pin 2 “+” XLR inputs with common hi/lo

impedance switch.

Phantom Power- +48 volts Phantom power for condenser microphones, can be enabled or

disabled for each input channel individually using front panel switch.

utputs- Transformer-free electronically balanced outputs. Rear panel switch for balanced Pin 2

“+” or unbalanced Pin 2 “Hot” operation.

Meter- 14 segment LED meter per channel, displays output signals ranging from -42 to 0dB

below peak output level. Maximum balanced peak output 24dBu, maximum unbalanced peak

output is 18dBu.

Dimensions and Weight- 8”wide x 10.75” deep* x 1.75” high, 4.5 lbs

*depth includes clearance for front and rear panel switches and connectors

AC Power:

Voltage 90-264 VAC, Frequency 47-63Hz, Current 0.1A

Fuse Rating 4A “Fast Blow” *

*Subject to change! Please always check the rating on the fuse and the one printed next to the

fuse holder on the power supply PC board before replacement. Replace the fuse NLY with a

fuse of the same rating. If you have any questions, contact: techsupport@lavryengineering.com

ACCESS RIES

Included in box: U.S.A. Power Cord, Warranty Card, This User’s Manual

ptional: LavryBlack Series 19 inch rack-mount kit. This kit is designed to mount two LavryBlack

units side-by-side in a 1U rack space.

LIMITED WARRANTY – LAVRYBLACK SERIES M DEL MP10

Subject to the conditions set forth below, for one year after the original purchase date of the

product, Lavry Engineering will repair the product free of charge in the United States in the event

of a defect in materials or workmanship.

Lavry Engineering may exchange new or rebuilt parts for defective parts. lease call the factory

for an RMA number prior to shipment. No product will be accepted for warranty service without

a pre-issued RMA number.

This warranty is extended only to an original purchaser of the product from Lavry Engineering, or

an authorized reseller of Lavry Engineering. roducts that are purchased from unauthorized

resellers do not have any warranty coverage. A valid purchase receipt or other valid proof of

purchase will be required before warranty service is provided. This warranty only covers failures

due to defects in materials or workmanship and does not cover damages which occur in shipment

or failures resulting from accident, misuse, line power surges, mishandling, maintenance,

alterations and modifications of the product, or service by an unauthorized service center or

personnel. Lavry Engineering reserves the right to deny warranty service to products that have

been used in rental, service bureau, or similar businesses.

This limited warranty gives you specific legal rights. You may have others which vary from

state/jurisdiction to state/jurisdiction.

LIMITS AND EXCLUSIONS

LAVRY ENGINEERING DOES NOT, BY VIRTUE OF THIS AGREEMENT, OR BY ANY

COURSE OF ERFORMANCE, COURSE OF DEALING, OR USAGE OF TRADE, MAKE

ANY OTHER WARRANTIES, EX RESS OR IM LIED, INCLUDING, WITHOUT

LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A

ARTICULAR UR OSE, TITLE OR NONINFRINGEMENT, AND ALL SUCH

WARRANTIES ARE HEREBY EX RESSLY DISCLAIMED. LAVRY ENGINEERING

EX RESSLY DISCLAIMS ANY IM LIED INDEMNITIES. LAVRY ENGINEERING SHALL

NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, CONSEQUENTIAL, UNITIVE,

S ECIAL OR EXEM LARY LOSSES OR DAMAGES, INCLUDING, WITHOUT

LIMITATION, DAMAGES TO RECORDINGS, TA ES OR DISKS, DAMAGES FOR LOSS

OF BUSINESS ROFITS, BUSINESS INTERRU TION, LOSS OF BUSINESS

INFORMATION, LOSS OF GOODWILL, COVER, OR OTHER ECUNIARY LOSS,

ARISING OUT OF OR RELATING TO THE USE OF THE RODUCT, OR ARISING FROM

BREACH OF WARRANTY OR CONTRACT, NEGLIGENCE, OR ANY OTHER LEGAL

THEORY, EVEN IF LAVRY ENGINEERING HAS BEEN ADVISED OF THE OSSIBILITY

OF SUCH LOSSES OR DAMAGES. ANY DAMAGES THAT Lavry ENGINEERING IS

REQUIRED TO AY FOR ANY UR OSE WHATSOEVER SHALL NOT EXCEED THE

ORIGINAL COST AID TO LAVRY ENGINEERING FOR THE A LICABLE RODUCT.

BECAUSE SOME STATES/JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR

LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE

FOREGOING LIMITATION MAY NOT A LY TO YOU.

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