Parker 98's in 8ohm - what is the easiest way to drop the tweet 2.5db?

[DJNUBZ]

So I am rewiring my parker audio 98's to be 8 ohm loads. For those of you that are not familiar with the speakers, they are an MTM arrangement. The two 4 ohm 93db/w/m woofers are run as wideband drivers without crossovers. A FT17 covers the top with a simple 2uF cap making a first order crossover. When they are wired for 2 ohms, the tweet matches the woofers without any padding. Now that I have the drivers wired in series, the tweet is about 2.5db more efficient then the woofers. Using an l-pad calc it looks like I need a 2ohm in series and a 24 ohm resister in parallel. Considering how simple this setup is, can I just use a 2.7 ohm resistor in series and call it a day?

[DJNUBZ]

Am i on the right track?

[picowallspeaker]

Consider that the 24 Ω parallel acts also as impedance peak flattening

[DJNUBZ]

The graph here http://www.madisound.com/loudspeaker...ions/ft17h.pdf doesn't show much of a peak. Still worth putting the shunt in?

How important is the quality of the shunt transistor? can I use sand cast or should I get something better?

[AllenB]

It won't be possible to get an identical response to the original whether you use a single series resistor, a standard L-pad or if you were to go with a lower value of shunt resistor for the flattest impedance although there shouldn't be much in it. You should probably try the standard L-pad and assume you'll need to tweak it from there, unless you want to take it to measurements.

The sand cast resistors should be fine.

[DJNUBZ]

Would ARTA + and ECM8000 be good enough for measurement?

[AllenB]

I would think so.