AV123 Strata mini Specifications download pdf (Page 11)

Page 11

Setup of the 8” Woofer Amplier

Proper setup of the 8” Woofer amplier in Strata Mini loudspeakers ensures that the

blend of low to high frequency will be optimized when you nally sit down to enjoy them.

Setting the 8” Woofer Level

Although you can setup levels by ear, accurate calibration of 8” Woofer

levels relative to the other speakers in the Strata Mini require an SPL

meter. Radio Shack sells a digital meter that works very well for this

purpose (P/N 33-2055) and it’s about $50. Set the meter on ‘slow’ and

“C” weighting. The dial should be set at either 70 or 80 depending on

your preamplier/processor or receiver’s test tone reference output level.

Consult your owner’s manual to determine what reference point your unit

uses (most use 75, so the 70 setting on the meter would be appropriate

in that example). If you do not have a built in test tone generator, you

can use a test CD that contains Pink Noise.

Each range setting on the Radio Shack 33-2055 meter will cover 20dB (10 above and

10 below). So a setting of 70dB would cover between 60-80dB range. If you are using

another meter, consult the owner’s manual for proper operation.

Conguration and Reference Settings

1) Begin by reviewing the calibration menu settings of your receiver or preamplier/

processor. If there is a speaker conguration menu, be sure the outputs for Strata Mini

speakers are set to “LARGE”.

2) Unplug the 8” Woofer input on each Strata Mini speaker. Exactly how this is done

depends on whether you are using line level or speaker level inputs.

Establishing the Reference Levels of the Full Range Speakers

3) Set the volume control on your preamplier/processor to the “00 dB” level. If your

unit uses a positive number scale for volume instead of a minus-to-plus scale,

just watch the meter until it reaches 75 or 85dB (depending on the recommended

reference level of 70 or 80dB in the receiver or preamplier/processor’s owner’s

manual). Note this volume position because you will need to get back to it shortly.

4) Turn the volume way down and unplug the binding posts inputs that feed the high

frequency speakers on both of the Strata Minis.

Setting 8” Woofer Level

5) Reconnect the 8” Woofer inputs that you disconnected in Step 2 to both Strata Mini

loudspeakers.

6) The crossover on the each Strata Mini 8” Woofer should be set between 80Hz to

100 Hz as a starting point unless you have used the LFE 8” Woofer Output on your

preamp/processor) - in which case the crossover will be left at the highest setting.

Radio Shack

Digital SPL

Meter

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AV123 Strata mini Specifications Page 11