QUAD 9L Active Speaker Repair the other one - It's not the same!!

QUAD 9L Active Speaker Repair the other one - It's not the same!!

Ok, I was not expecting to find the other Quad 9L active speaker dead when I turned on my PC today, I was really hoping not to have a project this evening, however, it was interesting to have a little dig around inside it. I am surprised on how much they actually stuff in there, and its a lot of discrete components.

Specifications:

Quad 9L Active self-powered desktop speaker with built-in USB DAC

Driver complement: One 1-inch fabric dome tweeter and one 3.94-inch Kevlar mid-bass driver ?
Frequency response: 50Hz – 21 kHz, ± 3dB
Maximum output (short-term peak SPL): 105 dB
Internal amplifier power: 60 watts/speaker
Sensitivity: 0.775 V (0dBu)
Input impedance: 10k Ohms
Dimensions (HxWxD): 9.76” x 5.98” x 9.33”
Weight: 22.93 lb.

The earlier video:

Quad 9L speaker repair:    • Quad 9L Active Speaker Repair  

Other hifi videos:

Akai Amplifier Repair:    • Akai AA-5800 Amplifier Service Repair  
Quad 33 Pre Amp Restoration and Upgrade:    • Quad 33 Pre Amp Restoration and Upgrade  


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Thanks you lovely people, and keep on tinkering!