7a crossover question/difference
tonyp063
Posts: 1,083
The crossover does not match any of the ones in the stickies above. A 4.5 ohm resistor in series with the 12uF cap, rather than a 2.7.
The 2.7 is in series with the small inductor, akin to the original M10
Yes, I'm going to replace them with exact values, but it seems that this would be a more "laid back" crossover design that the others.
Or am I way wrong?
As best I can tell, this is the schematic used on these 7As
Searches found these posts.
http://forum.polkaudio.com/discussion/59876/special-monitor-7-what-should-i-do
http://forum.polkaudio.com/discussion/148369/polk-monitor-7a-with-peerless-resistor-value
Comments
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Only thing I can add here is the resistors are +/- 10% tolerance so between 4.7 and 4.5 they are to close to worry about.
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Perfectly normal for a Peerless Monitor 7. Use the same valuesHome Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Thanks Dave. I will.
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Just circling back for posterity & in case someone needs the info.
The crossover schematic above is correct.
Picture is the caps & resistors dry-fitted before soldering.
Also replaced the binding posts & anchored everything with a set of Larry's rings I've been holding on to for years.
Let me just put it this way.
You will have to pry these from my cold, dead fingers to get them away from me.
