Frequency response plot (voltage not SPL) at the tweeters in the SDA SRS 1.2 - graph
OldmanSRS
Posts: 419
I measured the electrical signal to each tweeter in the 1.2. The tweeter was in the circuit and the dB meter measured the voltage across the tweeter terminals. Not sure what this info is good for but it provides a plot showing the responsive curve from the 1.2's rather complicated crossover circuit. The tweeters are mounted in the cabinet with #1 on top and #4 at the bottom of the array.
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'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
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'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
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'88 Adcom GFA-555 (a second one upgraded/restored)
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'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
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One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's
'72 Triumph TR-6
__________________
'88 Polk SDA SRS 1.2, with upgraded XO caps and Erse SDA inductors
'86 Polk SDA CRS+
'84 Polk Monitor 10A (Peerless tweeters)
'05 HSU VTF-3 Sub (Original OEM)
'20 HSU VTF-3 Sub (three more, 100% cloned)
'93 Carver TFM-35
'88 Carver M-1.0t
'88 Adcom GFT-555
'88 Adcom GFP-555
'88 Adcom GFA-555 (upgraded/restored)
'88 Adcom GFA-555 (a second one upgraded/restored)
'05 Onkyo DV-555 media
'89 Fosgate 360 Digital Space Matrix
'89 Fosgate 360 Digital Space Matrix, internal surround amp bridged to drive only a center channel
'91 Kenwood Basic M1D Amp
'89 Pioneer Laser Disc media
'89 Sony SuperBeta HiFi media
One PGA2310 based custom built remote volume control
Four Polk T-15's
Four Polk TSi-200's
Four Polk TSi-100's
Two Polk CS-10's
Post edited by OldmanSRS on
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