Troubleshooting – Abbingdon Music Research LS-77 Reference Class User Manual

Page 13

Advertising

Troubleshooting

Symptom

Possible cause

Solution

No sound

• incorrect audio cable connections

• connect the cables correctly

• incorrect amplifier operation

• make sure that the input selector on
the amplifier is set to the desired source

Sound with no bass

• check speaker connectors are not

• check polarity using the AMR test CD and

and generally strange

connected with wrong polarity

correct if required

Sound is too bright or

• Incorrect placement of speaker

• Place speaker with high frequency driver upright dull
and at ear hight, pointing at the listening position

• Incorrect adjustment of HF Level

• Adjust HF level as per Appendix A

Bass is too full or lean

• Incorrect placement of speaker

• Place speaker correctly

• Incorrect use of port inserts

• Add (if too full bass) or remove (if too lean bass)
port inserts as required