getting drumkit believeable - what modest approaches work?

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#122
hitsware said:
>does series/parallel work as well as high ohm paralleled?

If you run an impedance plot of 2 drivers in parrallel, say fs 50 Hz and 60 Hz, it will read as a single driver with fs ~55 Hz, but if they are in series the 2 'humps' stay separate.
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If the two peaks are close to each other, series should produce one large peak, and parallel should produce one small peak.

If the two have some frequency separation, series should produce two peaks and parallel should mostly flatten the impedance.

Series seems to need less separation for this to take effect, but this is subjective.
 
#123
Magnetar said:



500 Hz is fine, although lower is better just because you may want one driver to cover the midrange

Your right, most recordings are badly compressed, there is still benefits to having the headroom capability.
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Cool, thanks. The Altec 288 CD's that I have only go down to 500hz. I can always look at alternatives that go down to 300hz, but I think the size of the horn will then be too large to fit either side of screen.
 
#125
The most realistic drum reproduction I've ever heard was when I owned a pair of Magnepan Tympani I-Ds, biamplified, with 2kwatts of Crown and McIntosh amps.
 

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#127
freddi said:
I had 1D (not biamped ) with DH200,/500 and Threshold 800 - sure a fave on jazz drums and upright bass
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I've had em too! Biamped with hog SS on bass and 200 WPC conrad Johnson tubes on top. I used to listen in nearfield to them. They sound like my OB panels except my panels don't sound quite as big but have better dynamics (much), better bass, more open, bigger sweet spot, and much more extended in the treble. I'd like to build something like the 1D but with neo magnets and lighter diaphragms - or I could just do what AJ did and add a bunch of mids and tweeters - that would be incredible.. and easy!
🙂
 
#128
hey Mag - for k-toy try something like this instead of k-tube/klam - I think the narrow diffraction slot would be better- maybe leave it dipole (?0 - I'd make one crappy from wood but have dizziness and looked two days for ginger capsules which were laying around
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An externally hosted image should be here but it was not working when we last tested it.
 
#130
hitsware said:
I suggest this experiment:
Take a pair of drivers
In a quiet situation (on the table in front of you)
hook them up to music and be able switch from
series to parallel and make attendant volume
adjustments
The proof is in the pudding ........
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Dunce cleverly interjects:
" It's obvious, the signal has to go 'through'
the 2 drivers in series but hits both at once
in parallel "
 
#133
tinitus said:
"Raw" Magnepan "surround" planar panels can be had from 300USD a pair, factory direct

An array of the new 10" Legend Eminence and with its own amp... might get you there

Although the cheapest panel may need a supertweeter

🙂
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Maybe stack a pair a channel to bring up the power handling and sensitivity? - I don't think I'd like the beaming though. DIY 'Super Manepans' - quasi ribbon 2-way with powerful neo magnets would be cool
 
#137
Magnetar said:
Current bass Klam 'Rosie' with JBL 2226H , Eminence Hemp Lil' Buddy 10" mid and Karlson tube with Emilar EK175 triamped first order (200, 1.6K crossover points) is pretty close to REAL - I don't think this can be beat for overall size - still weighs in at around 250 lbs a channel
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Hi Magnetar,

What is the physical size of your Klam 'Rosie'? Are you using the 1:2 ration for the front : rear enclosure? Keen on this build but worry about the size & weight.
I know this is no longer your primary speaker but will be good if you can show the photo.
 
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