What Amp do you use with your Mark Audio Drivers?

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I'm a very strong believer in Mark Audio, needless to say. My hope would be that new iterations start to get really good sales which they deserve - hopefully that will keep prices down and lead to widespread use and a steady increase in reputation.

I still think there's some way to go with public take-up of these speaker units. In the UK there are a lot of Jordan fans who haven't - as I have - heard the two units in A-B tests in the same enclosure. So they persist in thinking that if you want a fullrange metal cone you buy a Jordan. I have huge respect for Jordan - Ted was a pioneer and it was a groundbreaking product that inspired many.

But at this point the Alpair units are so far ahead that the only real excuse for not using them is not having heard them. But that's a big ask - where in the UK would you be able to hear the units. I see marketing for Alpair as being a bit like Hypex - strong base in the OEM and online forum communities. Works for Hypex. Pass would be another slightly different case (publishing schematics), though he has extensive shop-sold products you can demo.

Interesting challenge - selling things you really need to hear first.

Andy
 
I'm a very strong believer in Mark Audio, needless to say. My hope would be that new iterations start to get really good sales which they deserve - hopefully that will keep prices down and lead to widespread use and a steady increase in reputation.

I still think there's some way to go with public take-up of these speaker units. In the UK there are a lot of Jordan fans who haven't - as I have - heard the two units in A-B tests in the same enclosure. So they persist in thinking that if you want a fullrange metal cone you buy a Jordan. I have huge respect for Jordan - Ted was a pioneer and it was a groundbreaking product that inspired many.

But at this point the Alpair units are so far ahead that the only real excuse for not using them is not having heard them. But that's a big ask - where in the UK would you be able to hear the units. I see marketing for Alpair as being a bit like Hypex - strong base in the OEM and online forum communities. Works for Hypex. Pass would be another slightly different case (publishing schematics), though he has extensive shop-sold products you can demo.

Interesting challenge - selling things you really need to hear first.

Andy

Andy

Good thoughts.

There was at least one UK distributor for MA, not sure if they're still in the game.

It is a challenge for Mark to get his excellent drivers in front of the ears of potential customers. First you have to generate interest, then you need support from someone with the skills to make decent cabinets that will do your drivers justice, and with the energy and marketing prowess to make some noise (as it were).

I have only admiration for anyone undertaking to build a business in this fairly esoteric sector of a smallish market. The amount of work involved in designing and manufacturing a product like the Alpair range must be staggering, especially compared to the financial rewards.

I had not heard any MA drivers when I bought the Alpair 7.3s last autumn. My interest was piqued after I was given a pair of Bandors to play with and I went hunting for the same only bigger and better.

Now I will probably buy the new Alpair 12s. I have been bowled over by the performance of the 7.3s, but even in a small listening room, they have their limitations due to the necessarily limited cone excursion. Within their limitation they have proven so good that I haven't even built proper cabs - they are still mounted in quickly knocked together OB panels that I made to run them in (I can be an impatient sob). I really need to try some other configurations, if only for the sake of aesthetics!

For a UK importer/distributor for products in any specialist market sector, the big challenges are the balance of stock holding/pricing and getting demonstration product out "there" where people can hear them for themselves. Even though the UK is a small country, travel can be a limiting factor in reaching customers. The public/trade shows are a joke, and very expensive for exhibitors, and those with the biggest names and budgets generally shout loudest (often literally).

I think generally amps/electronics are a relatively easy diy sale, speakers a little more challenging as fewer people have the space/skills/tools to make their own cabinets.

All we, as existing customers can do is spread the word, and keep buying the products:D

Mark
 
Thanks Fellas,
I musch appreciate the support and good will. Being Easter Monday, I'm allowing myself a little time for some reflection.

I much enjoyed the time I spent with Ted Jordan. I have much admiration for his stamina and spirit. Ted is of the traditional school of British design, something sadly thats fast disappearing. Ted and me had our good times and our not so good times, sadly our association was not destined to last. We had markedly differing ideas on cone and other key component design. To be fair to Ted, I was the one who eventually pushed for radical development of lower mass power-trains using new materials and shallow profile cones, with all the inherent production, operational and financial risks. It became inevitable that we part our ways and so Markaudio was born in its own right.

For the last 2+ years, Matsubara san, the farther designer of the Fe series has been my great supporter. I well remember our first meeting where I showed him the Alpair 12 prototype, with its ultra thin front suspension, incapable of supporting the cone, he told me I was absolutely nuts to attempt a single mechanical suspension driver of this size! But he listened to my plan, poured over my drawings and we came up with the mother of all rear suspensions. A few weeks later, he came to a Markaudio listening event in Hong Kong and was bowled over by what he heard. The rest is history as the saying goes.

As important is Evan Yu. This guy has been my right-hand man for the last 5 years. He's one of these guys you need in any factory to get things done. He also a descent conventional driver designer in his own right. He also thinks I'm nuts at times, but he knows me well enough to give pretty much all my ideas a fair go. More recently, I've had the pleasure to work with Jeff Tanigichi san and Kitagawa san, 2 first rate audio product engineers. Many an hour is spent debating over all sort of developments, from custom connectors to changing over to fused spider mounting systems, you may imagine some of the daily conversation, but its worth it in the end.

I hope our pioneering sprit continues and home custom speaker builders continue to invest their confidence in our work. My hearty thanks to all the guys that have bought and used Markaudio drivers, as without this support, Markaudio couldn't exist. My hope is that we gradually spread more confidence in Full-Range drivers. I believe there is a big future for single point source, single cone full-range emitters.

I'm glad of all the help, support and encouragement as we're still a young company with hopes to make into main-stream audio some day in the future.

Thanks
Mark.
 
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Hello Mark,

It's a pleasure to support you and your products - I'm continually telling people here in the UK how good they are. I'm tempted to convert my Alpair 10 mk 1 in to Gen 2 ones, but you're got me really interested in the 12s.

One question - I'm pretty happy with the 10s but I'd like to know if I'd get more high treble with the Gen 2 versions. Also how the new 12 compares in high treble. I'm not quite getting the top frequencies on cymbals and violins, though at 60 my hearing is flattening off and it's not a huge issue. I've tried adding ribbon tweeters with a simple cap rolloff but I'm not getting the integration right unfortunately so haven't pursued it. I don't want to get into bi-amping. Ideas and comments?

Andy
 
Hello Mark,

It's a pleasure to support you and your products - I'm continually telling people here in the UK how good they are. I'm tempted to convert my Alpair 10 mk 1 in to Gen 2 ones, but you're got me really interested in the 12s.

One question - I'm pretty happy with the 10s but I'd like to know if I'd get more high treble with the Gen 2 versions. Also how the new 12 compares in high treble. I'm not quite getting the top frequencies on cymbals and violins, though at 60 my hearing is flattening off and it's not a huge issue. I've tried adding ribbon tweeters with a simple cap rolloff but I'm not getting the integration right unfortunately so haven't pursued it. I don't want to get into bi-amping. Ideas and comments?

Andy

Hello Andy,
Good to hear from you and much appreciate your support.

Thinking about our hearing capabilities (I'm 54), I'd suggest the Alpair 10 Gen 2. It will assist your hearing as there's a more gain over 10-kHz. Sadly, we're both affected by the march of time so hearing cymbals on some recordings could be more challenging.

One thing I noticed about the Alp12P is just how nicely balanced classical strings come over from this driver. Certainly the most dynamic to date without being sharp. Depending on your room size (4 x 5 metres or more) and the availability of a low power amp, the 12P could offer you more help.

Re integration using tweets, integration is the common challenge of 2 way or multiway systems. Given the inherent phase differentials between the drivers, its not easy to make it all sound natural

Cheers
Mark.
 
my drivers are Mark-designed EL-70's in my home-brewed oaken style boxes (6 litre) and the amp is a home-brew SET, a 6H8C (6SN7 equivalent) driving a 6H5C (6AS7 equivalent). I use the 8 Ohm tap on the output transformer so that I get a bit more juice. But we're still talking something in the range of 2W. Sound level perfectly fine for 90% of what it's used for - family background music in our living room.

(sorry of the EL-70 doesn't 'count' as an MA driver - please delete my post if you want)

I am interested in Mark's new 12's now.....
 

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I am currently using topping tp20. any good recommended diy SS amps for this, say around 40watts should be ok i guess. I have alpair 7 mk2 in a sealed small cabinet. Desktop use, small room, 12x12x10. I am not looking for more power but better sq.
I cant seem to find documentation for older products on the ma website. Could someone please tell me if these are 4 ohms or 6 ohms drivers. I am asking because I was thinking of myref gainclone, but that seems to have issues with low impedence drivers.
 
I am currently using topping tp20. any good recommended diy SS amps for this, say around 40watts should be ok i guess. I have alpair 7 mk2 in a sealed small cabinet. Desktop use, small room, 12x12x10. I am not looking for more power but better sq.
I cant seem to find documentation for older products on the ma website. Could someone please tell me if these are 4 ohms or 6 ohms drivers. I am asking because I was thinking of myref gainclone, but that seems to have issues with low impedence drivers.

In that setup a smallish class A would be one approach. I'd be amazed if you needed even 40watts per channel in your room/setup. I use Hypex UCD180s with my Alpair 7.3s and use only a fraction of the available gain (I have lowered the overall gain of my system to ensure I am able to extract an optimal performance - I use digital attenuation so need to optimise my bits!).

Class A or D would get my vote, though Class A may be more expensive to implement and run.
 
In that setup a smallish class A would be one approach. I'd be amazed if you needed even 40watts per channel in your room/setup. I use Hypex UCD180s with my Alpair 7.3s and use only a fraction of the available gain (I have lowered the overall gain of my system to ensure I am able to extract an optimal performance - I use digital attenuation so need to optimise my bits!).

Class A or D would get my vote, though Class A may be more expensive to implement and run.

I have another pair of speakers on my desktop thats a lot less efficient (continuums, some 83db), hence the 40-60w requirement.
This is for my desktop, so class A is pretty much ruled out due to heat and heat sink size, no AC in the room either.
Any good recommended diy kits or designs. My next speaker build is a 4 ohms speaker, so I would prefer something that can handle 4 ohms.
 
Doors666

How about a chipamp. I run a pair of Peter Daniels chipamps off a 12 cell 5000MAH lipo pack, split 6 cells per rail. Gives several hours listening between charges. These batteries are pretty good for power supplies in AC free rooms.

They generally drive 4ohm without issues too.

Mark
 
Doors666

How about a chipamp. I run a pair of Peter Daniels chipamps off a 12 cell 5000MAH lipo pack, split 6 cells per rail. Gives several hours listening between charges. These batteries are pretty good for power supplies in AC free rooms.

They generally drive 4ohm without issues too.

Mark


+1 to the sonics of Peter's designs, although the bulk associated with large battery packs might not be most convenient for a desktop situation
 
My choice.....

Hi Mark and everyone who is into this tread!

Today I finished the new amplifier LÒl-Res- which is my version of Nelson Pass SIT amplifier. It is based on the Sony SK82 and mine is buildt around a bunch of resistors. Some have buildt it with bulbs(LÀmp). Michael Rothacher is the mainhead behind this.
I have nearly finished my build( from two wood-box that was intended for 3liter Wine). I can add a round Meter in the front.
The sound= full-bodied, tonally very rich, clear and quick. Maybe somewhat like a tubeamp - but oh so distinct and life-like. :D

So my Alp10.2 was really coming home today with a splendid amplifier - inspired from mr. Pass and Mr. Rothacher.

So - in september/october I will build my version of the Alp12P.

Thanks to Mark for keeping us alert to get even better sound!!

Best to all.

Olav
 

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Amplifier output

Hi again!

My small amplifier should be able to output 2x8 watt in 8 ohm in ClassA. It is perfect to the Alp10.2, and I use it with my passive B1 at 40-50 % volume and it fills the room.
So a small ClassA currentSource amplifier is perfect for the Alpairs!

Looking forward to the late summer when I will start my Alp12P building.

Such wonderful Drivers Alpairs are.

Best

Olav
 
Hello,

Using the Alpair 7 in a OB configuration I have tried and experimented with many different amplifiers, here is a short list,
Scott 222 C, Pete Millet Engineers ( built by Phil Townsend) amp and my favorite thus far is a Golden Tube Audio SE40. All amps have been customised. The beautiful thing about these drivers is that they not only play music extremely well, they can give me an accurate picture of what is happening with gear changes, even a power cable change becomes evident. Here is Diy link too photos of speakers with subs, I will post amp photos here later.

http://www.diyaudio.com/forums/full-range/170079-new-alpair-7-small-ob-project.html

Thanks, Ramon
 
a range of them:

dual EL70 - Tubelab Simple PP EL84 (12-ish watts pentode) - 400sqft + room

Alpair 7 & 6M- Denon AVR 1610 HT receiver (70-ish "Denon" watts - whatever that really means) 320 sq ft room

Alpair 7.3 & 10.2 - EL34 SE triode & DIY hack-job EL84 PP class A/triode - in bedroom closet, oops, 8x20ft "man-cave'

none of these combinations can't play louder than I care to listen to, but of course for some folks less than a measurable 120dB on peaks is simply not realistic enough - live and let live I say - (except for the cochlear cilia destroyed by sustained listening at above levels , or 20+ years in a commercial woodworking shop, where SPLs can exceed an average 95 dB, with peaks well over 110)

So your Denon receiver doesn't have any issues driving the Alpair 7's? Aren't the 7's rated for 4 Ohms? The receiver is not rated for driving 4 Ohm speakers. Is it mainly an issue that you really aren't taxing the amps enough to make it an issue?
 
So your Denon receiver doesn't have any issues driving the Alpair 7's? Aren't the 7's rated for 4 Ohms? The receiver is not rated for driving 4 Ohm speakers. Is it mainly an issue that you really aren't taxing the amps enough to make it an issue?
sorry for the long delayed reply to this query, for which you may have already found a satisfactory response, but in my own case - the answer is - "yes, they don't get rode that hard", or some more technically more eloquent explanation ( I guess I just don't listen loud enough to test the limits of either the Mark Audio drivers, or the Denon receiver - other folks might)
 
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