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I have an offer for a pair 7 2217H at a good price $300 a pair.
Can these be used for a 2 way monitors?
They were used in the array 4893 LF enclosure down to 38hz.
I am thinking about a 2 way dual 2217H+2450J with 2397 or 2380 horn
Comments will be appreciated?
How to obtain the 2217h? To always sell? test with 14 is interessant. http://c.wanadoo.fr/z.gifQuote:
Originally Posted by sa660
http://c.wanadoo.fr/z.gif
HerveM:)
Hi Richard,Quote:
Comments will be appreciated?
- If you can buy 2 pairs of these things for $700. , then I think it's a decent investment .
- Even though the speaker is used as a subwoofer , I'm more inclined to classify it as a 14" version of a 2226 ( which I view as a woofer - forget the "sub" part of the phrase ).
- The 2226h & 2217h share a very similar ( if not identical ) magnetic assembly. They also share the same Qts, a pretty close Fs ( the 2217 is higher which is understandable since it has a lighter cone ), identical Xmax, identical rated power handling (Re), identical magnetic Flux values, identical DCR of the voicecoil, very close Le values, & just about the same BL . To my eyes, all in all the 2217 is a 2226 , "performance" engineered into a 14" basket . To get such a similar response ( from the numbers ). that is comparable to the 2226 , translates into a less efficient speaker ( think 94 or 95 db instead of 97 db )
- To my knowledge, there is no published Frequency Response for this woofer , so buying it means you are taking some chance. That said, I'd use a modified response from the 2226 as my guide for it's midrange performance .
- I would use 2 of these a side in a MTM setup crossed at 800 hz. I think the 2397 is the better horn of the two mentioned .
- I think that you'll need to biamp "only" this setup / twin "H" speakers mated to a "J" compresson driver just won't "play nice" together if you build a Hi Frequency "lift EQ" for the horn ( - if you decide its' needed ) .
- I've run SIMS of the MTM boxes. I'll post the SIMS later today .
- Essentially, what "looks" good is a "Stagger Tuning", along the lines of what the M9500 uses .
Top Box = 2.5 cu' ( 70.8 litres ) tuned to 50 hz with (2) 101.6 mm (4") ports that are 171.45 mm ( 6.75") deep/long .
Bottom Box = 4.0 cu' ( 113.27 litres ) tuned to 40 hz with (2) 101.6 mm (4") ports that are 165.1 mm ( 6.5") deep/long .
:cheers:
OOOOPPPSSS
- Just became aware of the date on Richards' original posting .
- I guess that purchase opportunity has passed . :D
- My bad :blink:
Never mind the date, all very good informantion?
This is a hobby it can move very very slow.
Thank you.
Hi Richard,
- Just to finish up on this thought , here are a couple of SIMS .
- You can see that this arrangement gives nice solid response to @ 40hz .
- The bottom SIM simply indicates that both these tunings retain the 2217h(s)' ability to deliver maximum power (spl ) since the Xmax values never go into overexcursion ( above the box tunings ) .
- At the point where the 2 traces cross ( @50hz ) one could expect up to 3 db of "addition" - if the two woofers were in perfect phase. Since they aren't , the addition will be less than the 3 db maximum . At a 55° differential, the summing of these two vectors ( bass energy at that one point ) should be less than 1.5 db.
- I'd have to play in real time with the upper boxes tuning to get the nicest " bass addition" at that 50hz point. ( At that crossong point , one would want the most seemless addition . )
- A "target" phase differential ( I think ) would be 45° - maybe less ( 30° ? ).
- To "close that phase gap" , the upper box would need to be tuned a few hz lower ( @ 47hz ) . This does "steal" some mid-bass energy ( & creates more of a midband droop ). That's the trade-off .
:D
Hello earlK, Can I recone 2217h with C8R1400nd kit ?:hmm:
Herve
- Really, I don't know ;Quote:
Can I recone 2217h with C8R1400nd kit ?
- But, I highly doubt it because they have different thickness top-plates ( I think) - I'll need to review that assumption .
- I suspect that the 2217H can be reconed into a le14h-3 / but I don't 'know" for sure.
<> :)
Herve - as per your PM
"The cones for the 1400ND or the 1400Pro are not interchangeable with 2217H."
1400Nd
1400Pro
2217H
Thank you for quick reponse , Giskard! Suggestion for recone 2217 (c8r2217, yes), le14h1 or h3 ? for system style DMS: 2 woofer +compression driver 1,5".Quote:
Originally Posted by Giskard
or 2 way MTM :2235+2217 in parallel + 1,5" ??:banghead:
Hervé