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Multi-Way Conventional loudspeakers with crossovers

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Old 14th November 2011, 06:42 PM   #521
Pano is online now Pano  United States
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Quote:
Originally Posted by rvsixer View Post
Looks like details on the new floorstander are elsewhere:
You got it.
Basically the same little Vifa driver, same crossover and a 15" GRS woofer instead of the 12" Peerless. Much larger baffle, tho. It's a 1/4 sheet of plywood with 6" wings.

John should have details and photos here soon. There may be some slight changes in the crossover. You should be able to build a pair for about $260, complete (in the USA).
Or under just $100 per side for drivers and all crossover parts. Wood, screws, glue are extra.
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Old 16th November 2011, 01:43 PM   #522
FOXYE is offline FOXYE  Israel
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Interesting
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Old 6th December 2011, 03:27 AM   #523
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Default Sneak Preview

Here is a preview of the next version. A big floor standing model with the same Vifa 3" but a GRS 15" woofer.
Cost about $130 a side, all drivers, crossover wood and screws included.
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Old 6th December 2011, 03:38 AM   #524
syyma is offline syyma  United States
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How's the GRS 15" sound?

Sidney
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Old 6th December 2011, 04:18 AM   #525
mige0 is offline mige0  Austria
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we are going to get back to good ol' jukeboxsound as it seems


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Old 6th December 2011, 04:21 PM   #526
Kahooli is offline Kahooli  Abu Dhabi
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Has anyone evaluated the MCM Audio Select 21'' Die Cast Professional Woofer - 800W RMS | 55-2985 (552985) | MCM Audio Select
21" ?

the datasheet lends it to be a possible candidate. holy swept area batman
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Old 6th December 2011, 04:58 PM   #527
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Default So disappointing!!!

Yes I did and the driver's measured T/S parameters via WT3 were so far off as to make the driver near useless!! QT over 2 and true efficiency of about 89 DBW. Huge QE like the magnent is made from defective materials or not properly charged. Physically the driver is beautiful, 125 oz magnet, 1/2" top plate, nice cast aluminum frame and all the rest. Really a shame. I passed along my measurements to MCM with some technical notes. They said they would look into the situation, but have heard nothing since.

As far as I can tell what I received is typical, at least of the initial production run. IF, MCM were to deliver a driver remotely close to the published specs, it could be a game changer. I did try to use it, need to post a picture. Will forward one to Pano and he will post.

Bottom line is you can spend less money for a couple of cheap 15's and do way better. You can use a plate amp and get it to work well, but after spending $160 you have to spend an additional $125 to get it to perform. Not a good deal. Plus the added complexity and weight.
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Old 7th December 2011, 08:21 AM   #528
FOXYE is offline FOXYE  Israel
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Quote:
Originally Posted by Pano View Post
Here is a preview of the next version. A big floor standing model with the same Vifa 3" but a GRS 15" woofer.
Cost about $130 a side, all drivers, crossover wood and screws included.
Seems pretty large, what dimensions of the model?
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Old 7th December 2011, 01:42 PM   #529
Pano is online now Pano  United States
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1/4 sheet of plywood. 24x48 inches. You can find these precut as Lowes or Home Depot.
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Old 7th December 2011, 02:09 PM   #530
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The GRS sounds very good, especially considering it's simplicity and price. Wish it had a bit more efficiency and Xmax, but for the price you get a very usable OB driver.
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