What tweeter and 7" woofer for the best 2 way?

[sjm1580]

Curious for opinions for what would be considered the best combination for say a 20 Liter +/- sealed cabinet.

My thoughts so far are:
Scan Speak Illuminator D3004/66400 &
Scan Speak Revelator 18W/8531G

Thanks for the input!

 

[5th element]

This is one of those questions that could have any number of answers, but for me...

SB Acoustics SB17NBAC35 woofer.
Monacor WG300 waveguide.
Some Be tweeter on the waveguide.

I was going to pick the transducer lab Be dome but I thought they'd gone out of business, so perhaps just the Scanspeak one.

Cross at about 2.2kHz for a good directivity match. Why the SB metal cone driver? Because I enjoy metal cones and the SB is rather unique in that the ribs keep the amplified harmonics, that are usually found in stiff drivers, well controlled, and would allow for a 2.2kHz xover.

The other option would be to use something like the T34A from Bliesma on the waveguide and cross at 1kHz.

 

[jReave]

Troels has put some very nice high end 2-ways together:

MW19P-8
Illuminator-Monitor
AT-SW
ATiRi
ScanSpeak-Ellipticor-1

 

[etalon90]

I had very good result with the 18w8531 as a 2 ways bookshelf.
~20l enclosure.

For tweeter, the transducer labs ceramic are very good for the price.
The beryllium is sure better but for this kind of project I would go the ceramic one.

good luck

 

[ScottG]

Maybe this?:

Pharaoh | HiFiCompass

(..thought it's not sealed.)

 

[Bill poster]

I had very good result with the 18w8531 as a 2 ways bookshelf.
~20l enclosure.

For tweeter, the transducer labs ceramic are very good for the price.
The beryllium is sure better but for this kind of project I would go the ceramic one.

good luck

v good suggestions. TLab are now out of business, so either grab a pair quick or consider an alternative

 

[LineSource]

I am very pleased with the 7" Satori MW19P-4 and SB29RDC-4 tweeter on a flat baffle 0.7cuft volume cabinet with a rear port that can also be sealed. With passive crossovers at 1650Hz, both BW3/BW3 and LR4/LR4 circuits produce great sound free of cone breakup. I tested the passive LR4/LR4 for confidence with a future 2-channel amp with active LR4/LR4 Xover.

A sealed box Satori MW19P-4 covers human voices from soprano to bass.

 

[wolf_teeth]

The Rival Acoustics Aramid-fiber R176-KC-08 will have an F3 of ~65Hz in 12 ltrs while keeping its composure until about 100dB, according to simulation. 20 ltrs vented (I know the OP said sealed) will yield an F3 about 25Hz lower, and be just as clean with a little more driver protection around tuning.

I agree that the MW16P or MW19P would be great in a sealed box.

Later,
Wolf

 

[ScottG]

8", not 7" ..and a slightly larger sealed enclosure of about 25 liters:

http://motusaudio.com/wp-content/uploads/2015/08/UH205PW1-Spec-Sheet-8-2015.pdf

..and for the tweeter perhaps:

https://www.parts-express.com/pedocs/specs/275-094--dayton-audio-amtpro-4-specifications.pdf

 

[Pilover2000]

..and for the tweeter perhaps:

https://www.parts-express.com/pedocs/specs/275-094--dayton-audio-amtpro-4-specifications.pdf

If you check out the AMT4 it dies after 14k. People are reviewing it as more of a midrange.

I haven't heard anything about these but they look interesting for the top end:

Aurum Cantus AST2560 Aero Striction Tweeter


Grant.

 

[Zvu]

Motus UH205PW1 and this:

BlieSMa_T34B-4

Crossed over just about anywhere you'd like

 

[ScottG]

If you check out the AMT4 it dies after 14k. People are reviewing it as more of a midrange.

Grant.

..but in this design you'd have more than enough pressure loss (say average around 85 db) to taylor the response as needed (..to include an extended treble to at least 20 kHz).

 

[ScottG]

Motus UH205PW1 and this:

BlieSMa_T34B-4

Crossed over just about anywhere you'd like

..bah, I'd already linked to that with HiFiCompass's Pharaoh's.

 

[Pilover2000]

..but in this design you'd have more than enough pressure loss (say average around 85 db) to taylor the response as needed (..to include an extended treble to at least 20 kHz).

And they are a little bit too much for the low end choice too.

Are your suggestions based on an existing speaker and if so is there a review available?

Thanks.

Grant.

 

[Zvu]

..bah, I'd already linked to that with HiFiCompass's Pharaoh's.

No you did not. This is a Be version, not AlMg dome

 

[ScottG]

No you did not. This is a Be version, not AlMg dome

oh, snap!

YouTube

 

[ScottG]

And they are a little bit too much for the low end choice too.

Are your suggestions based on an existing speaker and if so is there a review available?

Thanks.

Grant.

Not an existing speaker - just from what I'm seeing on the PE pdf for the driver. (..increase resistance to near 8 ohms, drop the response 2.4 - 17 khz, etc..)

A good low-end response is something I always value - which typically makes for a better high-pass response.

..of course the response totally depends on how the tweeter is loaded (..both as far as an enclosure AND baffle dimension).

 

[burnett]

I'm wondering why nobody mentioned Wavecor so far!?

Wavecor WF182BDXX

Fits the bill quite nicely imho.
Have them here combined with a Seas DXT - just beautiful and brutally honest.

 

[wolf_teeth]

I'm not sure the Motus 8" is available anymore.
Later,
Wolf

 

[system7]

My thoughts so far are:
Scan Speak Illuminator D3004/66400 &
Scan Speak Revelator 18W/8531G

I can't think of a more horrible and difficult combination, TBH. And totally unsuited to 20L closed box.

We do get some sickly stray cats wandering up to our door....

The guys are, of course, totally right that an 8" woofer can work spectacularly well here.
E0045-08S W22NY001
JA8008-HMQ

The main thing is to know a good 8" woofer when you see one. Troels remarks: "To my ears, this is the best speaker I've ever made."

DTQWT-mkII

Not much to the main section, if you regard the twin bass reinforcement as a bit of iceing on the cake. I like this sort of thing myself.