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I'll let others who have heard them comment on how they sound. The tweeter is wired in reverse polarity with a second order electrical filter of 3.3uF and 1.0mH. The woofers are wired in parallel with a first order electrical filter of. That and I like tinkering with things so the 'trial and error method' is the most enjoyable part of the process for me. The tweeter is centered on the baffle and is 10.5" from the top of the cabinet.Ĭrossover: This was done by ear just for fun. The woofers are centered on the baffle and are 5.5" and 15.75 from the top of the cabinet. Download Design Data Base with over 400 drive units. It will import Design Data Base files version 1.0 and 2.0 and it will export Design Data Base file as version 2.0 only. The port is front mounted and centered 6.5" from the bottom of the cabinet. Unboxing e installazione Unibox UnipolSai. The cabinet walls behind the drivers are lined with eggcrate foam, but other damping materials could be substituted if desired. The external dimensions of the cabinet then fell into place at 48" H x 8" W x 12" D. This set the baffle width at 6.5", and I arrived at a baffle height of 46.5". had posted on PETT awhile back where the baffle went from truncated edge to truncated edge on the woofers. The woofers dictated the baffle width, as I used a method that Pete S. The GRS tweeter was selected because it paired well with the woofer and fit the budget requirements.Ĭabinet: After measuring the woofers and modeling them in Unibox, a cabinet volume of 50L was arrived at. The woofers were selected because they modeled well in a reasonably sized cabinet and they were (and still are) attractively priced. I'm sure some of you will recognize them from when they were at DIY Iowa a couple years ago.ĭrivers: Peerless SDS-160F25PR01 on woofer duty and the GRS 1TM-4 tweeter. This is one of the designs I plan to bring to DDIY this year.