Hi All,
My A11MS have been sitting in their boxes for a few weeks now while I’ve been making my bass system, I’ll be getting onto the cabinets for them very soon & as they will only be used from approx 300hz upwards, I was wondering if it’s worth trying them in an open backed cabinet ?
Their cabinets will protrude from a partition which is stuffed with approx 30cm of rockwool, thus would probably absorb the backwave quite efficiently.
My A11MS have been sitting in their boxes for a few weeks now while I’ve been making my bass system, I’ll be getting onto the cabinets for them very soon & as they will only be used from approx 300hz upwards, I was wondering if it’s worth trying them in an open backed cabinet ?
Their cabinets will protrude from a partition which is stuffed with approx 30cm of rockwool, thus would probably absorb the backwave quite efficiently.
Attachments
You can (obviously) -speaking for myself, I'm not convinced for this application there will be any actual advantage in doing so though. I've no issue with open back boxes per se -useful enough in some circumstances, but probably not in this one; I'd be more inclined to go with a sealed box / sealed TL.
I was just about to bump this thread. It's been awfully quiet here. I know the USA distributors have yet to get their stock in so I don't expect many N. America viewpoints yet. However, as they've been out for a while overseas I was hoping more folks would chime in on their listening impressions.
I'm a little afraid of what the cost of these will be as the political climate seems to be increasing costs from China. I'm sure Madisound will sort it out but I hope these don't come in with a MUCh higher cost than the 10.3
I'm a little afraid of what the cost of these will be as the political climate seems to be increasing costs from China. I'm sure Madisound will sort it out but I hope these don't come in with a MUCh higher cost than the 10.3
They will be higher, certainly more than the discounted A10.3 that has been available. I expect to see them come in at $250-270 USD/pr.
Looks like the 1st Mar-Ken7ms will be built in Japan (after i finish the drawing/design)
dave
Are you planning on offering these enclosures? Any more details you could share here or in PM? I never received your reply regarding the Mar-Ken enclosures and I do have some questions. Especially as to why you're seemingly focusing on the 7ms over the 11. Would appreciate any info you're able to give.
Best,
Steven
Hmmm… i sent that message twice.
Yes, i will be doing a fun set of encloures for these. The A11ms will be interesting. Low Q, Vas, means optimum box will be smaller than for the A7ms, and bass extention not much better, just more capability to move air. The trapezoid Mar-Ken for the A11ms will probably be quite squat.
I’ve been thinking of a box with 4 A7ms and a cascade of shunt caps so that as you go up in frequency fewer drivers are playing. Niminal 32Ω in the bass should make for smooth sailing (current-wise) for the amplifier.
dave
Yes, i will be doing a fun set of encloures for these. The A11ms will be interesting. Low Q, Vas, means optimum box will be smaller than for the A7ms, and bass extention not much better, just more capability to move air. The trapezoid Mar-Ken for the A11ms will probably be quite squat.
I’ve been thinking of a box with 4 A7ms and a cascade of shunt caps so that as you go up in frequency fewer drivers are playing. Niminal 32Ω in the bass should make for smooth sailing (current-wise) for the amplifier.
dave
Greets!
With such a high mass corner combined with an abysmal driver efficiency, there's not going to be a sufficient amount of protection for a wide dynamic range HIFI app, much less what is apparently a HT app.
Frankly, with drivers like these with their zero warning before bottoming out in such apps, putting them in under-damped cabs [at least 1.0 and preferably 1.4 Qtc] and XOing them such as to flatten them out is my recommendation.
GM
Hi GM, thank you for your comments, unfortunately, if I understood what you’re saying, I probably wouldn’t need to be asking you guys questions
Are you suggesting that even crossing the A11MS at 300hz, they’re not going to provide much SPL ? I’ll be crossing over actively with choices of 2nd, 4th, 8th order slopes in BW or LR flavour
Thanks Dave, I’m really looking forward to getting these hooked up.
Have you had any serious listening to these yet ?
The A11ms ML-TLs have been in the system since just after diyFEST.And during diyFEST, we had a very serious listen with the A7.3eN/A12pWeN MTM (250 Hx 1st order passive XO) using Tom’s new 200ish watt amplifier. Even in my big room it played pretty loud. A7/11ms configured similarily should have as much output.
dave
dave
Hi GM, thank you for your comments, unfortunately, if I understood what you’re saying, I probably wouldn’t need to be asking you guys questions
Are you suggesting that even crossing the A11MS at 300hz, they’re not going to provide much SPL ? I’ll be crossing over actively with choices of 2nd, 4th, 8th order slopes in BW or LR flavour
Greets!
You're welcome?
I've no clue how you could get this out of what I posted.
The goal here is to protect the driver at higher power, which will be required to get decent output for HT apps and/or wide dynamic range [HIFI] recordings.I'm a believer in acoustic solutions for acoustic problems as much as practical, hence the high Qt alignment suggestions Vs lower ones combined with > 2nd order XOs in the critical telephone BW where we ideally don't want any XO influence [250-2500 Hz decade].
This will 'push' the XO point somewhat above 300 Hz and may require 'gapping' [offsetting] the actual XO point of each for flattest in-room response since it's down in the room modes BW.
'Easy' way would be a 'textbook' 2nd order sealed [0.707 Qtc] plus 2nd order XO at its F6 point for an acoustic 4th order.
GM
Thanks Dave, those A11/A7 MTM’s sound interesting, any pictures of those you could share ?
Greets!
You're welcome?
I've no clue how you could get this out of what I posted.
I'm a believer in acoustic solutions for acoustic problems as much as practical, hence the high Qt alignment suggestions Vs lower ones combined with > 2nd order XOs in the critical telephone BW where we ideally don't want any XO influence [250-2500 Hz decade].
This will 'push' the XO point somewhat above 300 Hz and may require 'gapping' [offsetting] the actual XO point of each for flattest in-room response since it's down in the room modes BW.
'Easy' way would be a 'textbook' 2nd order sealed [0.707 Qtc] plus 2nd order XO at its F6 point for an acoustic 4th order.
GM
Hi GM,
Apologies for being rather dumb, I’m a complete novice.
Yeah, I’m going to run them sealed 0.707.
Thankfully, the amp I’m using (Lyngdorf TDAI2170) has excellent room correction built in & does a fantastic job of blending satellites with subwoofers, it has the ability to run two different speaker configurations so I can choose different xo’s & switch between them to compare.
All good fun & I’m looking forward to hearing what these drivers can do.
Many thanks
Jason
Hello!
I have been listening to these constantly since I got them and they haven't stopped impressing me.
Two nights ago I took my A6m over to my friends (after sorting internal surface dampening) as he wants to get a decent pair of speakers for his music journalism and I set them up and thought they sounded a little small. Of course, they are smaller speakers but in terms of the sound stage the A7MS really is a massive step up and I don't think I'd be able to go back now!
Really nice high end and great detail. It's hard to describe without going in the WhatHifi description silliness but they truly are wide and when watching films really give a great sense of location for sounds.
I can't wait until I get either a spare A7MS or just plump for an A11MS for my centre speaker to complete the centre of this jigsaw puzzle. However, I need an amp and new crossover before this can be completed so it's a few months off. My A6M will be surrounds by the end of the month so I hope to have a full Alpair family surround!
I have been listening to these constantly since I got them and they haven't stopped impressing me.
Two nights ago I took my A6m over to my friends (after sorting internal surface dampening) as he wants to get a decent pair of speakers for his music journalism and I set them up and thought they sounded a little small. Of course, they are smaller speakers but in terms of the sound stage the A7MS really is a massive step up and I don't think I'd be able to go back now!
Really nice high end and great detail. It's hard to describe without going in the WhatHifi description silliness but they truly are wide and when watching films really give a great sense of location for sounds.
I can't wait until I get either a spare A7MS or just plump for an A11MS for my centre speaker to complete the centre of this jigsaw puzzle. However, I need an amp and new crossover before this can be completed so it's a few months off. My A6M will be surrounds by the end of the month so I hope to have a full Alpair family surround!
Brilliant to hear Graham,
I’m really encouraged to hear your impressions.
I’ve nearly finished my subs now so I’m itching to get these up & running.