NEW 95db tower

RAW · « **on:** 18 Feb 2006, 05:48 pm »

Yes we have a new 95db MTM tower coming.
And yes the drivers are a XBL^2 motor, below is the 8ohm driver data and for the 16ohm driver data we are just waiting for Adire to provide the data.
These drivers weight in at 7 3/4 lbs each

And the drivers are MADE IN THE USA

This way we have tight control on the build quality from driver to driver.
Nu-Bleached kraft pulp and manila hemp cone
With a Nitrile-butadiene rubber surround

Fs: 45.3 Hz
Qms: 3.8
Qes: 0.40
Qts: 0.36
Vas: 27.5 liters
Re: 5.43 ohms
Le: 0.37 mH
BL: 6.1 N/A
Mms: 9.9 grams
Sd: 126 cm^2
Cms: 1.25 mm/N
Xmax: Xmax is 12mm one way linear, Xmech is 14.5mm rearward, 15mm forward
Xmech: 14.5mm rearward
SPL: 91.5 dB @ 2.83Vrms

We will have more data after they have been broken in for a few hrs.

The MTM tower will use the 16ohm drivers which will be on display at the Audiofest on Feb 25,06

The new driver shown along side the 6.8 Extremis.

The data will be updated as the drivers are measured after break in.Andthis data will be posted in the next few days.

Just wanted to get a little heads up on the new driver we have now.

jon_010101 · « **Reply #1 on:** 18 Feb 2006, 07:00 pm »

Sounds very exciting... an 8 ohm, 95dB tower, eh? So will this also have an Aurum Cantus tweeter?

RAW · « **Reply #2 on:** 18 Feb 2006, 07:32 pm »

Yes the tower MTM will have the RA104.5 ribbon in them

arthurs · « **Reply #3 on:** 18 Feb 2006, 08:36 pm »

What's the overall size expected to be?

RAW · « **Reply #4 on:** 18 Feb 2006, 08:38 pm »

7" on the large OD
I will get more detailed data in the next few days.

sica · « **Reply #5 on:** 18 Feb 2006, 09:02 pm »

Wow the magnet is much bigger than the 6.8 Extremis!

Bemopti123 · « **Reply #6 on:** 19 Feb 2006, 01:59 am »

Have you thought about making, a more compact, MTM monitor version of the same? Some people are dying to try something of the sort, efficient and reasonable. The nearest competitor of something like that are the Arias, by different manufacturers and the North Creek Audio MTM monitors.

We need High Efficient that is other than Single, FullRange driver based offering or DIY.

jon_010101 · « **Reply #7 on:** 19 Feb 2006, 03:53 am »

Quote from: Bemopti123

Have you thought about making, a more compact, MTM monitor version of the same? Some people are dying to try something of the sort, efficient and reasonable. The nearest competitor of something like that are the Arias, by different manufacturers and the North Creek Audio MTM monitors.

We need High Efficient that is other than Single, FullRange driver based offering or DIY.

I couldn't agree more! I would love a high-efficiency MTM monitor. I have RAW / GR Research Diluceos right now but I would definitely consider a 95dB / 8 ohm MTM for playing with lower-power tube amps.

Gooch · « **Reply #8 on:** 19 Feb 2006, 03:23 pm »

What are the specs on the RA104.5 ribbon don't see them on your site?

kfr01 · « **Reply #9 on:** 19 Feb 2006, 03:50 pm »

Very exciting. Looking forward to more information about the drivers.

Nick V · « **Reply #10 on:** 20 Feb 2006, 12:55 am »

Is that a 5.25" woofer or a 6.5"?

Any plans on an MTMWW or something of that nature mating these with the extremis woofers?

Doublej · « **Reply #11 on:** 20 Feb 2006, 02:06 am »

What, if any, is the downside of a pair of speakers with 95dB efficiency?

RAW · « **Reply #12 on:** 20 Feb 2006, 04:09 am »

Quote

Wow the magnet is much bigger than the 6.8 Extremis!

Just a little motor

Quote

Have you thought about making, a more compact, MTM monitor version of the same? Some people are dying to try something of the sort, efficient and reasonable. The nearest competitor of something like that are the Arias, by different manufacturers and the North Creek Audio MTM monitors

The down side with efficent speakers is a low end response that can not happen with a small cabinet.
Using the MTM tower will get a F3 of 39hz around there and a F10 in room of the low 30hz range.
Cabinet size will be 48" tall 9" width 16.5" depth.
With baces placed every 6" threw the cabinets.

To have a small book shelf MTM with these they will only play done to around F3 of 50hz range

Quote

I couldn't agree more! I would love a high-efficiency MTM monitor. I have RAW / GR Research Diluceos right now but I would definitely consider a 95dB / 8 ohm MTM for playing with lower-power tube amps.

This is one reason why we did the MTM because listening to a ribbon with no or very little resistance in the network just puts a different balance to the over all sound of the tweeter.

Quote

What are the specs on the RA104.5 ribbon don't see them on your site?

FR data taken by Adire on a IEC baffle 10 ft off the floor.
The yellow is our ribbon. these are on axis.
Below is the off axis vertical measurments which will show were a ribbon is different from one to the next.
Horizontal they are very close and ours shines a little more due to face plate changes when compaired to other AC ribbons as well as others.

The above is a 30 degree off axis vertical measurment.Notice the same Yellow line our RA104.5

Above is the measured off axis vertical 45 degree.
Same yellow is our RA104.5 and the red is the G2.

Rated impedance: 6Ω
Rated Power: 30W
Sensitivity : 96dB/W/M
Frequency range:1500Hz～40KHz
Dimension of aluminum ribbon: W8.5mm×L60mm×T0.01mm Shape of aluminum ribbon: wave
Mass of aluminum ribbon：12mg
Moving area of aluminum ribbon: 510mm2
Gap Fiux: 0.55 Tesla
Frequency cut recommended：over 2200Hz
Material of mounting faceplate：aluminum，CNC processing, surface with anodizing electroplating finish.
Dimension of mounting faceplate: Φ104.5mm×T4.5mm
Outside dimension : Φ104.5×D84.5
Weight ：0.98kg/pc

The above waterfall plot shows the G2 on top with our RA104.5 below.
Note the lower distortion in ours compaired to the G2.

Quote

Very exciting. Looking forward to more information about the drivers.

So are we

Quote

Is that a 5.25" woofer or a 6.5"?

Quote
Is that a 5.25" woofer or a 6.5"?

Any plans on an MTMWW or something of that nature mating these with the extremis woofers?

The driver is just over 7" across the large OD but we will call it a 6.5" as that is what it measures across the short side.

Quote
What, if any, is the downside of a pair of speakers with 95dB efficiency?

No down side a good thing Very easy to power them with low wattage tube's.

klh · « **Reply #13 on:** 20 Feb 2006, 05:42 pm »

Very impressive. Will this be available as a kit? Will you also make a center channel? I realise the box would still have to be huge, but there are many of us who have room for a large center channel. What about MT surrounds? Good work Al! Any pics?

DanWiggins · « **Reply #14 on:** 20 Feb 2006, 06:49 pm »

Quote from: RAW

Yes we have a new 95db MTM tower coming.
And yes the drivers are a XBL^2 motor, below is the 8ohm driver data and for the 16ohm driver data we are just waiting for Adire to provide the data.
These drivers weight in at 7 3/4 lbs each

Xmax: 6.5mm one way linear
Xmech: 14.3mm rearward

We will have more data after ...

Just to clarify...

Xmax is 12mm one way linear, Xmech is 14.5mm rearward, 15mm forward. I don't think I can do a 6.5" woofer with only 6.5mm of Xmax any more!

Dan Wiggins
Adire Audio®

Voodoo Rufus · « **Reply #15 on:** 21 Feb 2006, 01:59 am »

Quote from: DanWiggins

Just to clarify...

Xmax is 12mm one way linear, Xmech is 14.5mm rearward, 15mm forward. I don't think I can do a 6.5" woofer with only 6.5mm of Xmax any more!

Dan Wiggins
Adire Audio®

How did you get even more efficiency out of the same size driver as an Extremis while retaining the same xmax, and with lower BL?

DanWiggins · « **Reply #16 on:** 21 Feb 2006, 04:21 pm »

Lower mass. This HE unit has ~45% of the moving mass of an Extremis. The tradeoff is less low end output. In a similar sized cabinet, it won't play as low as the Extremis.

Dan Wiggins
Adire Audio®

trekker · « **Reply #17 on:** 21 Feb 2006, 06:51 pm »

So does this new driver replace the WR125

RAW · « **Reply #18 on:** 21 Feb 2006, 07:19 pm »

No it does not

Just add a few more products.

The MTM is really were we are going with as little as pading on the ribbon as possible.

Voodoo Rufus · « **Reply #19 on:** 21 Feb 2006, 07:58 pm »

Next question, will there be a shielded version?

Also, the RA104 ribbon's response rises towards the high end. Is this intentional or make it overly bright?

Will there be on/off-axis woofer response graphs, or is it too early?