Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Only sound from the left DSP33

Hi Bayetta,

Start with only a pair of speakers. If the DSP33s are accessible, hook up M-lead to Left (master) and an S-lead from Left DSP33 to the right DSP33. Make sure to select proper channel (R or L) in setup for the DSP33s. Leave all other speakers disconnected. Try your test tones.

If both speakers work, move on to test another pair in the same way (centre and Sub, R and Left Surround) still using front left and right main outputs. Keep it to one pair at a time. Keep the variables to a minimum. This will help differentiate between speaker, cable and processor issues. This is how my local distributor advised me to work through the system, years ago. He has stated many times that the single biggest snag in getting M equipment all working is COMMS. Once each pair (including cables) is known to work then start adding one pair at a time to the functioning main channels. You need to prove each speaker and cable works before blaming the processor.

If only one speaker works, switch speakers, changing left for right, keeping the cabling as is. Does the working speaker stay on the same side (processor or cable issue on opposite side) or does it switch sides (speaker issue)? Then try to change cables, preferably with one(s) you know work(s). If still no change in which speaker works, switch speakers yet again. Now same side or opposite: same side = likely processor, opposite side = speaker issue as long as cables (both digital and comms) are proven working. I've had defective cables with no visible evidence of damage.

The 420s are harder to test because of the different connections. You may need an adapter or some other "test wiring" appropriate for the generation of speakers you have. Have you heard them working ever? Depending on your comfort level, you may need assistance.

Was the electrician familiar with the Meridian system and connections? It would be unlikely he fried something unless he was very careless. It is more likely a connection issue. It would be nice to have a Meridian dealer familiar with installations out to help you check everything.

I wish you the best of luck.

Regards,

Wayne