9rw, the bubbling noise, alas , is NOT upstream. That was checked. Mbonn, by usual servicing I mean, that the plastic foil in the 63s covering the panels has to be restreched or replaced every 2-3 years of fairly heavy use. If one is handy and sufficiently careful with the use of a heatgun or hairdryer, this can be done at home.
Steveboeck is essentially correct to my mind. Only regarding the parts quality, which has gone from bad to worse and quality control of the new Quad speakers has gone completely down the hill, alas. However, if set up and driven right and if you have a service departement near, it is still one of the best transducers to be had anywhere!
Steveboeck is essentially correct to my mind. Only regarding the parts quality, which has gone from bad to worse and quality control of the new Quad speakers has gone completely down the hill, alas. However, if set up and driven right and if you have a service departement near, it is still one of the best transducers to be had anywhere!