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Old 3rd September 2020, 01:03 PM   #1591
ujju3doc is offline ujju3doc  India
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Thanks for your straight forward reply. I will talk to the supplier.
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Old 4th September 2020, 02:53 PM   #1592
polywine is offline polywine
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I got the P7PHD yesterday and a bookshelf box (140x210x260) with the front port suggested by Markaudio official website.

I compare with my old A7m3. Human voice from P7PHD is a bit too sharp. I am not sure if it's still in breaking in period. I really find it scream when i play female vocal.

I will put wool inside instead of synthetic fibre inside to see if it helps. Any other suggestion to improve the sound are welcome.
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Old 4th September 2020, 03:00 PM   #1593
berlyassocial is offline berlyassocial  India
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Just wait for the break-in time. And I don't think you necessarily have to replace the type of damping material. just keep adding more of the same polyfill. more quantity of stuffing will help you dampen the brightness. keep a record of how much you add each time. But again before doing all this wait for the break in period
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Old 4th September 2020, 03:50 PM   #1594
oldspkrguy is offline oldspkrguy  United States
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It has a hump around 5 KHz or so that does tame down eventually. I am using mine as a very wide band midrange so I have a single inductor on it for low pass around 4200 Hz or so. I am using a 0.25 mH, 14 AWG equivalent flat foil and it smooths out the top "just enough" for "ME". Again; I am using a super tweeter because of my hearing loss starting around 8 KHz. Most Mark audio drivers take a minimum of 100 hours to break in well. WHAT EVER YOU DO; DON'T HIT IT WITH TOO MUCH BASS OR POWER...until it has at least 100 hours on it.

If, after well broken in, you decide you don't want to keep them; I'll be happy to buy them from you (assuming shipping charges aren't ridiculous from your location).
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Old 4th September 2020, 04:07 PM   #1595
oldspkrguy is offline oldspkrguy  United States
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I have mine in a "non-box"; no parallel surfaces to avoid standing waves. You can try felt damping on the walls; convoluted or pyramid shape foam a few inches behind the driver then fill the rest of the box with poly fill. I do this with some of my other drivers; I think the pyramids or irregular curves of the foam help break up and help absorb reflections that can go back through the cone from inside to outside. The cone material is light and thin so it is very picky about "reflection energy".

I will try to copy and paste my foam; it comes in many thicknesses...

Collections – SoundAssured

Acoustic Foam Pyramid Panels – SoundAssured

These are sold to recording studios; there are data sheets that show the frequencies and absorptions; normally for use on walls but I find they hep inside the speaker box; especially if you have many parallel walls that tend to exaggerate standing waves, etc.
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Old 4th September 2020, 04:10 PM   #1596
polywine is offline polywine
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thanks everyone. I will be patient. I do believe it will be good after burn in . I am just wondering if the existing configuration works well.
The bass of this small driver is amazing at the moment. It's obviously more effective than my old A7m3. It's great to hear all of your experience.
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Old 4th September 2020, 04:17 PM   #1597
oldspkrguy is offline oldspkrguy  United States
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I think the edge wound ("rectangular"?) voice coil helps give it better high definition (thus the HD in the part number/name). I read this was the reason they are using this VC style and configuration; supposed to have better control over the signal; I think in part because the magnetic field is more concentrated than if using a more conventional round wound type voice coil???
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Old 6th September 2020, 11:59 AM   #1598
simplesteve is offline simplesteve  United Kingdom
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OK, can I ask a question here - I am totally new to all this DIY stuff, want to build a pair of speakers.
I've pretty much decided on the KJF audio pensil 11 kit, but now have to decide on the driver - the Mar Audio Alpair 11 or the way more expensive MAOP 11.
I've spent several days reading threads about cabinets, can anyone please spare my eyes and give me a brief comparison between the two - that does the extra money get me ?
If it helps, my room is 4x5m, amp is an EWA Q20 class A, current speakers are Graham Audio LS6f's (sort of BBC sound I gather) music is radio paradise-ish.
Many thanks !
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Old 7th September 2020, 04:20 PM   #1599
ujju3doc is offline ujju3doc  India
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Simplesteve

Attempting to build your first speakers will be challenging as well as enjoyable. Pensils are simple to build compared to other popular designs like Frugel horns.It will be pretty doable with a flatpack or kit.
What i have read is you get better stage and dynamics with MAOP drivers compared to their regular counterparts. Finesse and better accuracy can also be expected from them. Now these factors and their degree of achievement will impress you or not,depend entirely on you. If you want to spend the extra amounts for those attributes then MAOP 11 should be preferable over Alpair 11ms in my opinion.
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Old 7th September 2020, 04:24 PM   #1600
oldspkrguy is offline oldspkrguy  United States
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MAOP is considered by some gurus to be as about as good as it can get. I would love to have some MAOP 7 some day. I did send MA an e mail months ago asking how much a pair was and how much they cost shipped to the USA. I never got a reply. I have read that they are rare and hard to come by and are very expensive. Keep us updated; really want to get more inputs on anyone that has or will soon have any MAOP.
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