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In the Forum: Audio Discussions
In the Thread: Constructing LF modules to the limits
Post Subject: Scanspeak, sand and sound.Posted by oxric on: 9/21/2011
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 haralanov wrote:
 Romy the Cat wrote:
If you feel that 25W/8565-00 is a good driver then try many of 25W/8565-00. You might try it using both channels on one side and playing mono recordings…

That was the first thing I made when I finished the enclosures. Wow. The difference is really huge. The authority of sound, the weight of bass notes they give, the ability to portray the real size of the instruments, the sense of scale to all recordings, the evenness of the bass in the room…. I am really motivated to use 4 drivers per side, up to the ceiling, in the way you use them, but with freedom to time align all 4 enclosures because they will be separated from each other.

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 Romy the Cat wrote:
Be advised that I never was able to find a SS PP amp that was able to do proper bass….

Solid state amps are out of my scope and they should be used only in context of powerful DJ installations Wink

Best regards,
P. Haralanov



Hi Haralanov,

A couple of years ago you posted about your special woofer, or rather subwoofer solution but I think you had not quite finished that ambitious and what you termed 'constructing LF modules to the limit' project.

I am sure there are many others like me who have wondered whatever happened to your experiment with the Scanspeak 25W/8565-00 as you said that eventually you were planning to have four of these per side as you had experienced the improvement in low bass that you get with multiple such drivers. I know you may have completely stopped at that point but if you have continued or completed that project, maybe you might care to share your experience on this thread you started. It is not only curiosity that motivates me to ask as in the long term, I may try to go down this route myself, and I do not need to be told about the effectiveness of sand in this application. I think that the attention you have paid to damping should pay huge rewards in the LF applications.

I was recently talking to a friend about the Scanspeak 25W/8565-00s and mentioned your installation to him. He feels that his simulations show that the 25W would have difficulty reaching down to 30Hz. Would that fit in with your experience of the 25W? And whilst we are at it you mentioned using tube amplification for this channel; would you mind saying how you drive this channel?

Best regards
Rakesh


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