Peerless Seas 2 way

[GlennME]

I'm working on some HT main speakers using the Peerless 850122 midwoofer and the Seas 27TFFC tweeter in a sealed box.

My starting point was Jason Andreason's reflex mini monitor which features the two drivers I'm interested in using.

http://www.kaiaudio.com/diy2001/jasonopen.html

My query concerns the crossover and baffle step. Since I'm changing the enclosure dimensions (to a 10" wide baffle), I take it I'll have to change the baffle step component values. How do I calculate this, and would I have to change any other values in the crossover due to the change in enclosure shape and volume?

Thanks in advance,

Glenn

[sreten]

http://www.speakerbuilder.net/web_fi...eek/Totfr1.jpg

Some useful info here and probably a better crossover.

Baffle step correction is via Rbs and Lbs - very crude, and it
appears to only offer around 2dB of baffle step correction.

The SB network is for an 8.5" baffle, so 10" is 18% more,
IMO probably the effect would be slightly richer voicing.

I'd use the SB network as it is, with adjustment
of the 3.5R tweeter resistor to taste for the 27TFFC.

sreten.

[GlennME]

Thanks sreten. I had looked at the SB site a while ago, but didn't think of substituting the 27tffc tweeter.
http://www.speakerbuilder.net/web_fi...k/pcrkmain.htm

The baffle width is no problem. I can change my enclosure dimensions to suit.

Thanks again,

Glenn

[revisorn]

A series filter, although for a floorstander can be found at:

http://www.geocities.com/rbrines1/Pa...less_Pipe.html

He states that the filter suits Seas 27tffc.

http://www.geocities.com/rbrines1/im...R_XO_small.gif