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 Bierfeldt's System (new to Tunelend)

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Michael Green
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PostSubject: Re: Bierfeldt's System (new to Tunelend)   Tue Oct 09, 2018 4:29 am

The kit I was thinking of was the TunePak

https://www.michaelgreenaudio.net/roomtune

Not sure anyone has ever painted these. They are usually attached with pushpins with drywall.

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Sonic Voyager



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PostSubject: Re: Bierfeldt's System (new to Tunelend)   Thu Oct 18, 2018 10:49 am



Greetings Bierfeldt!

Checking in – have you been able to improve the bass extension in your system with any of the things Michael or Sonic suggested?

Sonic


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Bierfeldt



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Age : 41
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PostSubject: I am slow   Fri Nov 09, 2018 9:56 pm

I missed that this went to a second page.  Saw you guys replied and I was confused that I didn't see responses.  Not my strongest moment.  
So, I have been messing around with placement for the past four hours and have found the perfect spot.  See the attached photo.  I think the key is that the port in back is not aimed at the windows so I am getting very full bass.  Imaging is spectacular.  Deep and wide soundstage and if I listen to something recorded in Q sound it is mind boggling.  

Compared to the original placement, I am maybe 2' further apart and an additional 9" off of the back wall.  1M in front of the speakers I am getting that same dip and peak.  At my listening position measured frequency response is much flatter.

I did move the speakers closer to the wall but the soundstage became less coherent and sound became much more localized to the speaker.  

I have been working on my own speaker designs and you are seeing the optimal placement for the more premium speakers.  They are kicking the ever living crap out of my revels in term of soudstage and detail.  The ones in orange are still a work in progress.  Not a large enough vent in the internal brace and it is choking off bass just a bit.  

Incidentally the balance of the system has changed a bit too.  



Michael, I do want to get a Room Tune Kit.  What do I need to do to order a RoomTune TunePak in Beige?
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Sonic Voyager



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PostSubject: Re: Bierfeldt's System (new to Tunelend)   Mon Nov 12, 2018 9:26 am


Greetings Bierfeldt

Congratulations! So happy that what Sonic suggested went towards solving your problem with the bass. Music ain’t nothing if it ain't got a good bass tone to give scale and weight.

About your DIY loudspeaker: Sonic wonders why have you chosen to build another mini-monitor design (like your Revels) instead of a floorstander with maybe a 12 inch woofer? Or perhaps alternatively an Open Baffle design?

Sonic


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Bierfeldt



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PostSubject: Not so much DIY   Mon Nov 12, 2018 2:46 pm

These speakers are not really DIY and more prototype for production models.  The cabinet materials are unique.  There are a few products that are similar but no one is using the core material I am that I can find.  And competition is outrageously expensive with the cheapest bookshelf speakers I can find using the same sort of materials starting at about $9500.  I opted for standmount / bookshelf first for a variety of reasons:  
1. They are less complex with a simpler crossover.
2. The Revels served as a high quality reference that I needed to beat to justify a price premium
3. The cabinet materials are viciously expensive so mistakes and refinements are dramatically less costly than for a floorstander

Currently I am working on subwoofers and early next year will start on a floorstanding model or two.  I am 100% certain I will do a floorstander with two 8" woofers and may look at other designs.  I will be at AXPONA under the brand name Verdant next year.  

Open baffle's are interesting.  I heard the Pure Audio Project Quintet 10 Voxativ over the weekend at the NYAS.  They sounded fabulous and look really cool.
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Sonic Voyager



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PostSubject: Re: Bierfeldt's System (new to Tunelend)   Yesterday at 6:39 am


Hello Bierfeldt

Good that you are creating speakers that offer technology and performance at sensible prices. Today’s equipment are priced at levels that are far beyond any relation to the quality they offer.

Sonic understands and has read the debates round the alternate approaches of using a pair of small woofers (eg: 2 x 8”) or employing one large one (eg: 1 x 12”). My JBL 4365-fan friend says there is nothing like one Big Woofer driven with a strong magnet for bass extension and slam.

Your views briefly on this woofer debate, if you please?

Sonic



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Bierfeldt



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PostSubject: In my opinion   Yesterday at 10:01 am

This is a hard question - bluntly, I haven't done critical listening on a speaker with a large, single bass driver in more than 7 years which is about when I lent my Infinity Kappa 8.1s to my ex-wife's cousin. I suspect I will not be recovering those.

I have read up on the subject but for that reason, I can offer theoretical POVs but those are worth exactly what you and I paid for them. If there was a clear, objective, technical answer this wouldn't be a debate. From memory, I really liked some speakers that had single, large bass drivers. I love Infinty speakers. I don't know if I liked them better or worse than the speakers I hear today with smaller, multiple drivers. .

Ultimately, consumers today seem to want narrower profile speakers. I am trying to make money so I plan to give consumers what they want. If I get to a point where I can experiment more with cabinet designs I will likely consider a large, side firing woofer and a large front firing woofer. That will be a while though since carbon fiber is VERY expensive and those prototypes will cost me $10K per pair.


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