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Old 7th March 2012, 10:22 PM   #1
macson is offline macson  United Kingdom
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Join Date: Mar 2012
Location: london
Default 2 questions about an MTM design/quality.

I am about to build my first diy speaker (exited but a little confused and now going round in a circle!). I am considering a MTM design (possibly Dr. K’s MTM). I presently have a MTM floorstander which was originally a Symphony 6 with an extra Audax drive fitted (I do not know what was or wasn’t done with the crossover).
I only have a small/moderate room size (12ft by 12ft) so do not want anything bigger than 7” drives but would preferably like a little extra volume than my 6.5” drives at 89db give me on my amp (Cambridge A5) as I play music on occasion loud. The existing cabinet is the right size for a Dr. K’s MTM so am only planning to remake the front (and vent)
Here are my 2 questions:
1. My budget is limited to about £500 so given my existing speakers sound ok (better than you would imagine given they’ve been messed with) would I notice a DR.K’s design as a LOT better in quality or for all the money and time or only slightly better? (I was hoping for more punchy bass (not deeper boomy) and better dynamic sound etc.

2. Does anyone know of a MTM design with 6.5” or 7” drives that are more efficient for a tweak extra in volume (I can find more efficient drives but with limited knowledge wouldn’t know which tweeter to add and the relevant crossover specs etc.)

If not I will be happy with 89db I just don’t know if there is a better value /quality MTM for my cabinet size(900 x 230 x 240 – any bigger and the cabinet would be far too big for room size)

Any advice more than appreciated at this point.
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Old 7th March 2012, 10:56 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
My RS180 MTM Design - Techtalk Speaker Building, Audio, Video, and Electronics Customer Discussion Forum From Parts-Express.com


The above is the most elegant x/o design for the Dr.K MTM's I've
seen and consequently also the far cheapest x/o implementation.

The build price is an different league to the Eltax Symphony 6.
I don't know them, they seem to be dirt cheap bought used.
How you can add another driver effectively is beyond me.

rgds, sreten.

Last edited by sreten; 7th March 2012 at 11:07 PM.
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Old 7th March 2012, 11:03 PM   #3
macson is offline macson  United Kingdom
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Join Date: Mar 2012
Location: london
Thanks for the advice sreten - I don't have anything else to compare to, so am just used to the 'mangled' speakers I have as my reference (hence my forthcoming build project).
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Old 23rd April 2012, 03:12 PM   #4
macson is offline macson  United Kingdom
diyAudio Member
Join Date: Mar 2012
Location: london
Default MTM build

Built the MTM using Jeff.B crossover - Love them, better than I could have hoped for. Thanks for the advice.
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