Bose 151 Service Manual

3. Air Leak Test
A. Using the 6 Vrms signal,set the oscillator frequency to 10 Hz. Block the ports. For at
least 3 seconds, listen for air leaks around the driver and baffle. If there is a "whooshing"
noise around the driver, re-position the driver gasket behind the driver to make an airtight
seal. If there are similar noises around the baffle, make sure that it is securely fastened to
the speaker cabinet.
4. Phase Test
NOTE: Supply voltage should only be momentarily applied to the speaker input terminals to
avoid possible damage to the speaker.
A. Set a DC power supply to 10 volts. To ensure that the driver is connected in phase,
connect the positive lead of the supply to the positive (+) speaker input terminal and the
negative lead to the negative (-) input terminal. The driver should move outwards with the
application of the supply voltage.
2
Figure 1. Test Connections 151™ Speaker
+
-
Audio Signal
Generator
Power Amplifier
Input Output
Speaker
--
++
-
+
Red (+)
Black (-)

Bose 151 Specifications

General

Type	In-wall/On-wall/In-ceiling speakers
Dimensions (WxDxH)	318 x 152 x 114 mm
Speaker type	2-way
Tweeter diameter	64 mm
Audio output channels	2.0 channels
RMS rated power	- W
Product color	White
Package weight	5100 g

Weight and Dimensions

Weight	4300 g