Quad 2805 reliablity? Distance from wall needed?

I have known several guys with Quads and they have all had problems when they first got them, then never again. The problem always, or almost always seems to be from trying to play the speaker too loudly. They just don't go that loud. You can't get Klipchorn, Wilson (all), Soundlab, Martin Logan, or even Magnepan volumes out of them. If you try to do they, you can fry a panel.

The 988(9) and 2905 are much better than the older models, but it still can happen. The just don't play that loudly. But, and this is a HUGE but, the sound sublime. I love them, they are just fantastic speakers, all of the models. The stacked 57's are just breathtaking. The newer models have a much deeper and coherent bass than you would ever imagine. They just don't play that loudly, no matter what you have upstream of them.

Great, great speakers though.

I have used Quads off and on since the early 60s and was a dealer for 20 years; now have apogees. The whole distance question boils down to this: all bipolar radiators produce equal sound pressure backward and forward. If you are too close to the back wall the back wave will be reflected against the rear of the speaker and lessen bass excursion. How close is too close? Judge for yourself. All rooms are different and everyone hears different things. Try them closer and farther away. I would not worry about it. As Macdadtexas says , most Quads are damaged by being grossly overdriven. If you accept their limitations in level they are hard to match. If I were using them today I would use a REL sub driven off the amp outputs as I do with my Spendors. What you have to decide is weather you listen at a level that is within their range. I once sold a pair of 63s to someone against my better judgement. I had a nelson reed system that would play VERY loud and I once measured the playback level he was listening to at 108 DB. Of course he blew them up several times and blamed it on his amp. That is the only pair I ever had trouble with.

The radiated sound from the rear of the speaker will bounce off the rear wall and reach your ears after the sound from the front of the speaker. If the time lag between front and rear radiations is short (because the speaker is near the rear wall), you will "hear" (process) the sound as smeared. If the speaker is optimally 5.5 feet from the rear wall (or slightly further away) you will hear the difference as room or hall ambience, a pleasing complex of sounds.