One of my perennial favorites in this range, is the venerable Audax PR170.
https://www.madisoundspeakerstore.com/pro-sound/audax-pr170m0-6.5-midrange-100db/
It has the impact/transient speed of a horn, without a lot of the difficulties in making horns "behave". A pretty simple crossover will make these do extraordinarily well in this range.
It's no longer produced- but even better- if you could find a pair of the Focal 7V313 "Polyglas" midrange drivers- those are like the PR170s, only less efficient- but with better control of breakup modes at the top end of the response.
http://nedlab.com/wp/wp-content/uploads/2014/06/7v313.pdf
One of the very finest sound systems I was ever involved with setting up, had this as a central element. The midrange output of this system was impeccable. Astonishing resolution, great speed. With pretty simple crossovers- no real "trickery" required.
Regards,
Gordon.
https://www.madisoundspeakerstore.com/pro-sound/audax-pr170m0-6.5-midrange-100db/
It has the impact/transient speed of a horn, without a lot of the difficulties in making horns "behave". A pretty simple crossover will make these do extraordinarily well in this range.
It's no longer produced- but even better- if you could find a pair of the Focal 7V313 "Polyglas" midrange drivers- those are like the PR170s, only less efficient- but with better control of breakup modes at the top end of the response.
http://nedlab.com/wp/wp-content/uploads/2014/06/7v313.pdf
One of the very finest sound systems I was ever involved with setting up, had this as a central element. The midrange output of this system was impeccable. Astonishing resolution, great speed. With pretty simple crossovers- no real "trickery" required.
Regards,
Gordon.
It's the passband of a 4-5" midrange driver. I would lean towards a 4" if the clean SPL requirements are moderate. If higher then perhaps a 5" or mulitple 4" drivers.
PR170/PHL 1120- Has great reviews, I am considering them for bedroom setup, foam surround life span is an achilles heal though!
I have scanspeak 12MU, which I want to sell now, after reading about pr170.
In a 3 way with a woofer and tweeter a wideband driver has too low a sensitivity and power handling to keep up and provide adequate clean SPL. A midrange driver is required for this configuration. Multiple wideband drivers in a line array or circle around a tweeter would work though. As might a desktop speaker. So it depends.
I typically don't worry about having a crossover point in that region. More worried about good integration between the drivers. Exactly where? Don't care as long as it makes sense with the drivers used.
Rob 🙂
Rob 🙂
SB Satori might be the best 4-5" now, but not cheap https://hificompass.com/en/speakers/measurements/satori/satori-mw13tx-8
Tight budget, in random order
https://hificompass.com/en/speakers/measurements/zaph-audio/zaph-audio-za14w08
https://hificompass.com/en/speakers/measurements/vifa/vifa-ne149w-04
https://hificompass.com/en/speakers/measurements/wavecor/wavecor-wf120bd03
https://hificompass.com/en/speakers/measurements/scan-speak/scanspeak-15w8530k00
https://hificompass.com/en/speakers/measurements/dayton-audio/dayton-audio-rs125p-4
https://hificompass.com/en/speakers/measurements/seas/seas-ca15rly-h1216
etc.
Tight budget, in random order
https://hificompass.com/en/speakers/measurements/zaph-audio/zaph-audio-za14w08
https://hificompass.com/en/speakers/measurements/vifa/vifa-ne149w-04
https://hificompass.com/en/speakers/measurements/wavecor/wavecor-wf120bd03
https://hificompass.com/en/speakers/measurements/scan-speak/scanspeak-15w8530k00
https://hificompass.com/en/speakers/measurements/dayton-audio/dayton-audio-rs125p-4
https://hificompass.com/en/speakers/measurements/seas/seas-ca15rly-h1216
etc.
Well sir, step into my parlor...
These are all mids I've used myself -
B&C DCM50 on a BIG WG
SS 18M8631T
Jantzen JA800HMQ
Audax HM170CO
Eminence Beta 8A
SB 6MW150D
Seas U18RNX-P
Seas CA18RNX
Satori MR13TX
B&C 6NDL38
Peerless NE149W
Visaton B80
Peerless P830870
PRV 5MR450-NDY *
Celestion NTR06-1705B *
Audax PR170MO *
* steep HP filter required
These are all mids I've used myself -
B&C DCM50 on a BIG WG
SS 18M8631T
Jantzen JA800HMQ
Audax HM170CO
Eminence Beta 8A
SB 6MW150D
Seas U18RNX-P
Seas CA18RNX
Satori MR13TX
B&C 6NDL38
Peerless NE149W
Visaton B80
Peerless P830870
PRV 5MR450-NDY *
Celestion NTR06-1705B *
Audax PR170MO *
* steep HP filter required
Too much a woofer for my taste and that dip at 1.5 kills it for me……sounds like every other boxed two way with a 2.k cross where the detail gets sucked out in the phase inversion
@mayhem13 Are you unhappy with the performance of your M74As? Based on a previous discussion we had, I thought you crossed them at 400 hz and were happy with their performance?
Granted, I wouldn't cross them that low myself, but crossed at 600 hz 2nd order they sound pretty good to me, at least better than most mids from a perspective of accuracy and low THD.
Granted, I wouldn't cross them that low myself, but crossed at 600 hz 2nd order they sound pretty good to me, at least better than most mids from a perspective of accuracy and low THD.
For an SPL limited solution, the 10F is likely the best sounding cone mid of its size and price point.
You could just go vintage JBL as well. These drivers are everywhere 104-2 -3, 2105H. Le5-9 good as well.
Rob 🙂
Rob 🙂
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Peerless TC9FD smooooth and cheap as bread! https://hificompass.com/en/speakers/measurements/peerless/peerless-tc9fd18-08
Low HD too 5,6V
SS 10F is 5-8 times more expensive https://hificompass.com/en/speakers/measurements/scan-speak/scanspeak-10f/8424g00
Low HD too 5,6V
SS 10F is 5-8 times more expensive https://hificompass.com/en/speakers/measurements/scan-speak/scanspeak-10f/8424g00
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Certainly is a lot of driver for 17 dollars.
Strange only 30 watts with open spider
Even seems to have coil vent on the magnet too.
Strange only 30 watts with open spider
Even seems to have coil vent on the magnet too.
There are many diy projects with this Tymphany/Vifa/Peerless TC9FD during the last 30 years. Even with open baffles and tabletop fullrange. It can take quite a lot of spl as midrange. I haven't used it myself though. Very nice HD behaviour.
https://www.diyaudio.com/community/search/1851744/?q=tc9fd&c[title_only]=1&o=relevance
https://www.diyaudio.com/community/search/1851744/?q=tc9fd&c[title_only]=1&o=relevance
One of these days I’ll get around to building an array of these paired with the Dayton ND20F-4 dome tweeters….ive got enough on hand to build 1 side back in the day when the TC9 was $10 and the ND20 was $9
It's actually possible to replace the foam surround on a PR170. I've done it. There are replacement cones for the RCF-made clone of the PR170 (I can't remember the part number, sorry)- the foam surround from those can be carefully removed from the cone, and used to replace the PR170 surround. It requires cutting down the outer diameter of the flat foam from the RCF, about 2 millimeters in radius (all the way around)- but it works just fine.
Regards,
Gordon.