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In Reply to: Altec 604E posted by klausesser on December 09, 2002 at 14:10:02:
Hi Klaus - although not uncolored, a Karlson Ultra-Fidelity enclosure with 604E should play bowed bass with very likelike bloom (I used the N1500 xover scheme) - and not bad on piano w. vocalists such as Hans Hotter's Schubert lieder - very little cone excursion even with rap bass at 115+dB using 416-8 - maybe 3-4mm p-p with a solid-state amplifier
Follow Ups:
Hi freddyi!
thanks for your message! But: 604E is a Coax-System with this
beautiful cellular horn in the middle which has a disperion of about (nominal) 90degree horizontal. I think the carlsson Coupler is more a specialized bass-unit.
thanks anyway for your fast reaction, klaus
sorry, i didnīt say itīs a 604e Duplex.
klaus
Hi Klaus - in one of my factory Karlson boxes run 604 Duplex converted from paper surround to cloth surround with a series network- HF isn't too badly affected - but may not please your ears - I think the initial slot opening plays a major role in upper midrange characteritics besides slot taper and type of reflector panel - the old Karlson tends to have a somewhat laid-back upper midrange which can be pretty on piano - I like the subjective punch on drums and sound on bass violin - one can feel the basswave - seems to energize the room nicely.
Hi Freddy!
Your sound-description matches exactly where I want to end up!
I just worry about upper mids - means voice range - and lower high freq. dispersion. Upper high freq. shouldnīt be affected too much. Problem is the level between bass and deeper mids - I havenīt any experiences with Karlsons in that way.
Hi Freddy,looks very nice - good job. Means "bass at 115+dB using 416-8" that the efficiency is about 115dB/1W/1m or is this the max. sound pressure level? Would be great. What efficiency did you measure for this 1W/1m?
hi Joao -efficiency of the Karlson is maybe 3-6db above reflex in 50-100 region - 60 watts brings a nice level 10*log 60~17.8, so add 17.8 to the speaker's sensitivity for a rough estimate of output - Karlson box loads well
Freddy, does this mean, that with 1W it follows 10*log1 = 0dB. There with i.e. a 416A and it's sensivity of 99dB/W/m the Karlson owns a sensivity of 99dB/W/m?!
depends - from ~60hz up a couple of octaves the Karlson box is 3-6dB above reflex varying with woofer- I think they load better all things considered
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