dan slv-tech Posted December 23, 2006 Posted December 23, 2006 Ho ho ho, just a quickie, Ive taken two RCF N841 com drivers from some boxes, replaced them with something else, just wanted to find out some specs on the RCFs, im thinking bout ebaying them- Ive tried RCF sites and ive mailed them, ive even googled "RCF N841" but alas nothing. Anyone help? dan
SteveB Posted December 23, 2006 Posted December 23, 2006 Dan, Are you sure it is a N 841? The only 800 series I have heard of are the N 800 and N 850. Both these have 2" exits. The N 481was a 1" exit, min X-over 1KHz, 120W continuous prog and a sensitivity of between 105 and 110 depending on the dispersion of the horn. If I remember correctly it had a phenolic diaphragm, weighed about 3Kg and was 15cm in diameter. If that is the one I've got all the specs for it somewhere in my filing system. I'll check my old brochures and if there is an 841 I'll post again. Steve
dan slv-tech Posted December 23, 2006 Author Posted December 23, 2006 Steveb, appologies, it is indeed a N 481 typo- could you PM me with the spec sheet if you have it many thanks dan
SteveB Posted December 23, 2006 Posted December 23, 2006 This is what my booklet has to say. N 481 Throat exit 24.5mm (1”0)Mounting type bolt onNominal impedance 8ohmFrequency response 500-20000HzMinimum cut off freq’ 1000HzPower handling 100 hour IEC noise 55WPower handling continuous prog 120WSensitivity (1W@1m) With H2006 horn 104.5dB With H2009 horn 104 With H3709 horn 106 With H4823 horn 108 With H6040 horn 110 (using 2 drivers and an adapter) With H9040 horn 108 (using 2 drivers and an adapter) With H9041 horn 106 Diaphragm phenolicVoice coil dia’ 44.4mmVoice coil material copperVoice coil former KaptonFlux density 1.95 Tesla Mounting hole pattern 3 holes equally spaced on 58mm dia’ 4 holes equally spaced on 76mm dia’ Overall diameter 146mmOverall depth 68mmNet weight 3.1KgReplacement diaphragm M50 The only info I have on the horns ( to give the sensitivity figures some relevance) is: H3709 is a 1” exponential with a nominal coverage angle of 90 x 80 and mouth 374mm x 90mm The H9041 is a 1” constant directivity with a not too unpredictable 90 x 40 coverage and mouth dimensions 264mm x 102mm The H6040 and H9040 are 2” constant directivity horns (I’ll give you 3 guesses on dispersion angles) their sizes are within a few mm of each other at 420mm x 245mm
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