Flatwounds
Well-Known Member
I just beamed my ADS 910 with an active crossover on Sunday night and I have not stopped listening. Mc225 top/mid Mc2100 bottom. The improvement is fantastic.
I just beamed my ADS 910 with an active crossover on Sunday night and I have not stopped listening. Mc225 top/mid Mc2100 bottom. The improvement is fantastic.
As long as the speakers have separate terminals for LF (+) (-), HF (+) (-), and the jumpers are removed there should be nothing common to cause problem for amp or speakers.
If there is a common ground, e.g. three terminals on the speaker ( common (-), LF (+), HF (+) ) then maybe there could be some weirdness if the amps weren't common ground.
Which has the effect of removing the woofer from the rest of the crossover.
Shelly_D
Indeed. Just the way it was worded came across, to me anyway, like there was some sort of extra special modification necessary.
I assume that you already knew that.
Shelly_D
No. I've been bluffing for years. All I have is an AM mono clock radio....
AHA! I JUST KNEW IT !
Check for chassis sag (top plate), it is very common on MC60 and MC30, especially MC60.
I am still tweaking. It's at 500 hz now. It really is a very nice improvement. I will probe;y invest in a better crossover at some point. The Ashly is a bit of a weak link, I think. I didn't want to spend too much at first but I am really enjoying the sound and I believe a better crossover would improve the sound even more.Those who have not tried are missing out on something that can be wonderful. What's not to like about having the ability to dial your speakers in to your own particular taste? I've tried crossover settings from the 800Hz. that Altec chose for Valencias up to 1200Hz. I've left it at 1000Hz. after many hours of trials.
You can do that, BUT you MUST remove the woofer off the crossover network and tie it to one of the amps directly. If you leave all the speakers on the crossover, then you end up tiring the outputs of the two amps together and that causes all sorts of failures, certainly in the amps and possibly in the speakers too.
The whole idea of biamping is to separate the highs and lows to delay the onset of clipping. Earlier in this thread I posted a link to Rod Elliot's excellent article on the subject. It explains the "what to do" and "why it works" much better then I do.
Shelly_D
Nada - damn fine crossovers.What's wrong with the Ashly? I'm using one with my MC60s, MC250, Citation 1 and Bozak Symphonies. Sounds great to me...
So wait, if I remove the jumpers from my speakers (it has terminals for high, mid and low) and connect an amp to each set of connections yet keep the internal crossovers (something I have done and liked the results I got a lot) am I endangering the amps? <<snip>>
...and not also include some easy way to bypass the internal crossover network?
No, not endangering the amps. You remove both jumpers from both speakers, the amplifiers' outputs are not tied together through the speakers' crossovers. This is the easiest way to bi-amp and what the dual-input with jumpers is designed for.
The only thing remaining is that you are still going through a crossover (high-pass filter) to the mid and one to the tweeter (if 3-way, otherwise just one to the tweeter/HF). This can still affect the sound and to some extent the power requirement for the upper frequency drivers. The woofer OTOH, it depends. Some speaker manufacturers run the woofer directly from the speaker inputs, others have some type of high-pass to filter frequencies below where the speaker can perform.
^^^
His answer is clearer then mine would have been but I agree.
Shelly_D
Because of the disasterous number of losses of tweeters and perhaps mids that would occur by people hooking up stuff they thought they knew about.