Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Mike's Project - MTM?
Mike's Project - MTM?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 4th January 2007, 04:29 PM   #1
Mike C is offline Mike C  United Kingdom
diyAudio Member
Join Date: Nov 2003
Location: South east Essex, UK
Default Mike's Project - MTM?

To get a useful bit more efficiency with a narrow baffle, and allow some BSC, MTM (or TMM) seems useful.
As I usually listen alone and can arrange to be in the sweet spot, MTM may work OK for me.

One interesting speaker (no longer available) was the North Creek Catamount; I might have gone for that even though it's pricey by the time it gets to the UK.

Now I have a very specific Q about MTMs. They have a low impedance and often a fairly variable impedance, due to 2x 8ohm woofers in parallel and a single 8ohm tweeter. Low impedance and variable impedance are said to be 'bad' with SETs; but the Catamount is said to 'love' SETs, and Wayne's Eros is also said to work very well with a 300B SET. Against other MTMs (even one with the same bass drivers as the Catamount), I see comments like 'SETs need not apply'.

So, can a MTM work well with an SET? What do I look for in such a speaker to ensure it works well?
  Reply With Quote
Old 9th January 2007, 10:09 AM   #2
Mike C is offline Mike C  United Kingdom
diyAudio Member
Join Date: Nov 2003
Location: South east Essex, UK
In an attempt to learn something, yesterday I got out a spare pair of speakers and hooked them up in parallel with my main speakers, to give a low load impedance.
The mains are about 88dB; the added pair are much lower (just over 80dB I think); JR149s (nice small speakers).

With both pairs in the main room, I noticed very little difference in the sound. Needed to raise the volume control slightly.

With the JR149s in another room, they didn't sound very good. But the main speakers (in their room) sounded *fine*. Coupling and uncoupling the 2nd pair while listening to the main speakers only showed a slight difference. On uncoupling the 2nd pair, the main speakers seemed to get a touch brighter; however, when trying to match the volume in both conditions, I'm not sure that there was a tonal difference or was I just hearing a volume change?
I'd say that any differences in the sound:
both pair in one room, 2nd pair connected vs disconnected
2nd pair in another room, listening to mains only, 2nd pair conn vs dis;
any differences were so slight as to be upset by the volume change.

I tried considerable volume setting, to give above normal listening volume with both pairs connected; sound seemed *fine*.

This all encourages me that my amp should drive an MTM OK.

I also tried the JR149s on their own in the main room; OK, quite nice, but a bit bright (small speakers), perhaps a bit more detail but was it just the tonal difference? Hard to say. But the JRs were not as complete and 'sophisticated' as the IPL S3 trans lines with their bass. I find it hard to use hifi speak but that's how it felt to me.
  Reply With Quote


Mike's Project - MTM?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mike's Proposed MTM Mike C Multi-Way 34 5th December 2007 09:33 PM
Inexpensive mike? audiobomber Multi-Way 10 27th February 2007 11:45 AM
Mike's Project - Background Mike C Multi-Way 4 17th January 2007 09:35 AM
Mike's Project - Zaph's MTM 16 (modded) Mike C Multi-Way 2 5th January 2007 07:42 AM
Measurement mike lndm Everything Else 6 29th March 2006 08:25 PM

New To Site? Need Help?

All times are GMT. The time now is 09:49 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio