3WAY: AMT Tweeter, Dome midrange , Woofer?

mixMZ

Member
2013-10-20 5:39 pm
I would be grateful if you could express their opinions or simply help me in choosing right driver.


I am considering a project that I could live or longer to play for years. The room is modest 20m2

speakers are to be 3 way and made with tweeter AMT Mundorf AMT23CM1.1R and dome midrange Tang Band 75-1558se I have managed to buy buy for silly money.

Good friend of mine who builds speakers suggested to do 3 way with some good tweeter / mid dome and 8 pro midbas like Fane 8-255 or Eminence Beta 8A, and gain the total db instead of taming midrange&tweetr to get right spl, and then recharge that 3 way with sub & dsp


I will be happy with healthy F3 at about 35-40 with really good kick at 80-120hz.

So the goal is to find a woofer that could play from 40hz to approximately 600 Hz where probably it would be necessary to cross mid dome.

I know that the solution of powered bottom and proposed midbass probably would play great, however, speakers are used daily with av receiver and TV and for "music lisnening session" i plug them to my tube amp, so while using with AV receiver I could potencially use some subwofer but my tube amp doesnt have that output which means additional costs, equipment ,mess with wires and most possibly dissatisfied woman:)

midrange and treble are about 90dB, so if Im right ,bass ideally would need to be aprox 94db when BSC is factored IN ...

Bass cabinet shouldnt be bigger than 80L.

I looked at VOLT B250.8 great driver but it`s not sensitive enough ,the faital 12PR300 is about 98dB and looks interesting.

Do you guys think that this 12PR300 could be good for the job? Or any other ideas?


Thanks in advance
 

srinath

Member
2010-02-12 4:09 pm
Great heil

The Great heil ? its can play quite well to 1200, in fact the ESS AMT1 series had them crossed as low as 800 hz if I recall. These can play down that low, but those AMT1 series have a nice big gap in freq response between ~500 and 1000 hz. But you can pair up with a woofer that covers that range well and be good with a 2 way.

The other 4.5" heil was crossed a bit higher, I think 1200 in the ess 10 or 8 or something I had. Rear mounted 12" radiator with a 10" woofer in the front in a traditional BOX cabinet.

3 way may be more complicated than its worth. Heils do fine 1200-18k.

Cool.
Srinath.
 

ActiveLin

Member
2016-04-15 12:08 pm
I am planning a 3way with 2'' dome and have consideres one of the following. No pro bass, but exceptional hifi speakers
- Scan Speak 22 W 8534 G00 Glass Fibre (89db)
- Monacor SPH 200 KE (Kevlar) (90db)
- Monacor SPH 200 CTC /Carbon) 88dB
- Monacor SPH 210 (Polyprop.) 90db
 

burnett

Member
2007-10-09 11:40 am
What about something like this:
831.jpg

Chassis:
Woofer: Scan Speak 22W4434G00
Mid: Tang Band 75-1558SE (in a small Waveguide)
Tweeter: Seas 27TBCD/GB-DXT

One Hypex AS2.100 per side.

Crossover
Woofer - Mid/Tweeter: active LR24 at 650Hz (with Hypex)
Mid/Tweeter: passive LR24 at 2500Hz
 
What about something like this:
View attachment 543910

Chassis:
Woofer: Scan Speak 22W4434G00
Mid: Tang Band 75-1558SE (in a small Waveguide)
Tweeter: Seas 27TBCD/GB-DXT

One Hypex AS2.100 per side.

Crossover
Woofer - Mid/Tweeter: active LR24 at 650Hz (with Hypex)
Mid/Tweeter: passive LR24 at 2500Hz

I bet that is a good sounding loudspeaker. Is that somthing that you built?? If it is it deserves a thread of it's own.
 

lousymusician

Member
Paid Member
2005-11-24 4:10 am
NorCal
I will be happy with healthy F3 at about 35-40 with really good kick at 80-120hz.

So the goal is to find a woofer that could play from 40hz to approximately 600 Hz where probably it would be necessary to cross mid dome.

...
midrange and treble are about 90dB, so if Im right ,bass ideally would need to be aprox 94db when BSC is factored IN ...

Bass cabinet shouldnt be bigger than 80L.

I looked at VOLT B250.8 great driver but it`s not sensitive enough ,the faital 12PR300 is about 98dB and looks interesting.

Do you guys think that this 12PR300 could be good for the job? Or any other ideas?

The 12PR100 will give you an F3 around 50 Hz (vented, 65 liters), and 95 - 96 dB/1 watt before BSC (as measured by my Woofer Tester 2). By factory specs the Beyma 12BR70 should get to 40 Hz but will give up about 2 dB/watt and need 85 - 90 liters. Might be a workable driver for you, never heard one myself.

Bill
 

srinath

Member
2010-02-12 4:09 pm
I built a ratty version

What about something like this:
View attachment 543910

Chassis:
Woofer: Scan Speak 22W4434G00
Mid: Tang Band 75-1558SE (in a small Waveguide)
Tweeter: Seas 27TBCD/GB-DXT

One Hypex AS2.100 per side.

Crossover
Woofer - Mid/Tweeter: active LR24 at 650Hz (with Hypex)
Mid/Tweeter: passive LR24 at 2500Hz

I built a ratty version of this re purposing an RCA cabinet and Infinity Kappa 5.1 XO and dynaudio drivers.
I'll put pics in a bit.
Cool.
Srinath.