Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

[Erich H]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

And I'm glad you've allowed for the Ultimax 12's. That's actually the direction I was looking to go with my HT. Any potential for a pre-cut baffle for the 15" ultimax?

There is a sealed 3cuft box for the 15" Ultimax. There will be a 6cuft ported model coming as well.

[alphaiii]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

There is a sealed 3cuft box for the 15" Ultimax. There will be a 6cuft ported model coming as well.

Erich,

At one point, you mentioned kits for some tiny dual passive radiator subs, as well as an idea for a compact sub that would be perfect for office/PC use...

Any of those still in the works?

I'm looking for something smaller than the 1cuft. option... but would prefer something with some bracing already designed into it, unlike the 0.67cuft. flat pack at PE.

[Jeff B.]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

Erich,

At one point, you mentioned kits for some tiny dual passive radiator subs, as well as an idea for a compact sub that would be perfect for office/PC use...

Any of those still in the works?

I'm looking for something smaller than the 1cuft. option... but would prefer something with some bracing already designed into it, unlike the 0.67cuft. flat pack at PE.

Actually, I designed a small .67 cuft subwoofer that uses a 10" woofer and two 10" opposed passive radiators. With the spec'd plate amp it is flat to 28Hz. I have listened to it and it sounds pretty impressive. Erich made me a CNC cut flat pack to test out of birch plywood, and it does have an internal brace - a very heavy, well built cabinet. Not sure what became of this. I figured we would ready to do it by now.

I also designed a small 12" dual passives, and have been working on a pair of larger subwoofers as well. One uses the Dayton Ultimax 12 and the other the Eminence LAB15, both will be mated with a pair of custom made 15" cast frame passive radiators that will out-perform any other passives available out there with very low losses (low Fsp and very high Qmp). Erich is still trying to get those ordered though, so that won't happen immediately. When it does though, DIYsoundgroup will likely be the only place these subs will be found, so that will give them the edge on those.

Jeff

[Erich H]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

The goal of the passive radiator models was to come out with 3 of them at the same time so that category would be done. But some parts of it are taking longer than expected, so I should probably list the first 2 designs either way.

[mikejennens]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I really don't know, Don. As a designer you always want to work with the best drivers out there. However, when you make a kit that someone will sell you have to be careful of your price-point. Lesser expensive speakers that sound very good sell well, but it doesn't make much sense for Erich to make flat-pack cabinets and crosovers for a speaker design that very few people will buy. It's different if a design is openly posted and people can try it if they want, so you have to weigh all of this when you select the drivers.

I have just completed the crossover design for the 8" two-way using the Eminence Beta 8-A and EOS waveguide, and I am very happy with how this speaker sounds. In some ways it is the best of the three I have done with these waveguides. It's less sensitive than the Tempest and doesn't go as deep as either 12" model, but it's midrange is excellent, and if you have subwoofers, it integrates really well.

I guess if Erich feels there will be a market for a higher price-point 8" then I may be game.

Jeff

Hi Jeff,
I won a pair of the eminence Beta 8 drivers and a pair of PSD2013-8 compression drivers at Iowa DIY this weekend. Will the crossovers you designed work with this combination of drivers? If so, is it available yet?
Thanks,
Mike

BTW, I finished a pair of your Contimuums in a MLTL and all I can say is these are probably my go to speakers from now on. I really can't see them being improved or outdone. I have other speakers I like quite well, but they really don't do nearly what the Continuums do sonically. They are simply GREAT!

[critofur]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I haven't named it yet, just started to do some crossover work. Anyone have any suggestions for a good name?

Jeff

Ryan - Yes, it is the Beta 8-A - a pretty stout 8" driver.

The Master Beta?

[Jeff B.]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

Hi Jeff,
I won a pair of the eminence Beta 8 drivers and a pair of PSD2013-8 compression drivers at Iowa DIY this weekend. Will the crossovers you designed work with this combination of drivers? If so, is it available yet?
Thanks,
Mike

BTW, I finished a pair of your Contimuums in a MLTL and all I can say is these are probably my go to speakers from now on. I really can't see them being improved or outdone. I have other speakers I like quite well, but they really don't do nearly what the Continuums do sonically. They are simply GREAT!

Yes, the design was finished and posted earlier this year as a kit at diysoundgroup.com named the "Alchemy". Unfortunately, it is not a publically posted / open source design.

[Brian Steele]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

Yes, the design was finished and posted earlier this year as a kit at diysoundgroup.com named the "Alchemy". Unfortunately, it is not a publically posted / open source design.

My apologies for resurrecting an "old" thread...

Jeff, the FR curve that's posted for this design here - http://www.diysoundgroup.com/wavegui...sion8-kit.html, can you give me some details on how the FR measurement was performed?

I'm about to send an e-mail reply to someone interested in building my Blastoramas, in which I'm suggesting that he have a look at that kit first before committing to cutting wood. My Blastoramas seem to have a very similar LF response to that kit, but of course if the FR measurement process is very different, that might not mean anything at all... . For my Blastorama measurements, I think I just put the speakers on a 4-foot high pedestal far away from any boundaries and took the FR using HolmImpulse.

[fwiler]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I just bought the Fusion-6. Very nice speakers with plenty of output, but also easy to listen to. I expected more of a Klipsch glare but it's nothing like that. Creates a wide listening area that I'm not used to.
I have to sell them though :( Even though they are a small speaker and they sound great, the old lady wants something smaller. Can't blame her, it's just for watching TV, and these are way overkill for that.

So if anyone would like a set already built at a reduced price, let me know.

[kevin007]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I just bought the Fusion-6. Very nice speakers with plenty of output, but also easy to listen to. I expected more of a Klipsch glare but it's nothing like that. Creates a wide listening area that I'm not used to.
I have to sell them though :( Even though they are a small speaker and they sound great, the old lady wants something smaller. Can't blame her, it's just for watching TV, and these are way overkill for that.

So if anyone would like a set already built at a reduced price, let me know.

I have been interested in these since they came out. Can you describe them? How do they sound? Are there any you could compare them too?

Kevin

[kevin007]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I just bought the Fusion-6. Very nice speakers with plenty of output, but also easy to listen to. I expected more of a Klipsch glare but it's nothing like that. Creates a wide listening area that I'm not used to.
I have to sell them though :( Even though they are a small speaker and they sound great, the old lady wants something smaller. Can't blame her, it's just for watching TV, and these are way overkill for that.

So if anyone would like a set already built at a reduced price, let me know.

I have been interested in these since they came out. Can you describe them? How do they sound? Are there any you could compare them too?

Kevin

[kevin007]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

Yes, the design was finished and posted earlier this year as a kit at diysoundgroup.com named the "Alchemy". Unfortunately, it is not a publically posted / open source design.

Jeff,

I have been interested in the Alchemy 8's and the MTM version since I saw them. I am buying a new house and will have a fairly large room to fill with sound. It will be approximately 20X30 to the end of the room. But the actual sitting distance from the TV/Sound will be around 12'. So I am contemplating a new speaker system. I have also been looking at the Fusion 4's as they look like an interesting design. I am looking to get some descriptions of these various designs to better make a decision for this next system.

I was thinking of running the Fusion 8 Alchemy's for R-L duty and use the MTM for a center channel. What do you think of a setup like this? And could you give any sort of an description of the sound?

Thanks a million,

Kevin

[Jeff B.]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

My apologies for resurrecting an "old" thread...

Jeff, the FR curve that's posted for this design here - http://www.diysoundgroup.com/wavegui...sion8-kit.html, can you give me some details on how the FR measurement was performed?

I'm about to send an e-mail reply to someone interested in building my Blastoramas, in which I'm suggesting that he have a look at that kit first before committing to cutting wood. My Blastoramas seem to have a very similar LF response to that kit, but of course if the FR measurement process is very different, that might not mean anything at all... . For my Blastorama measurements, I think I just put the speakers on a 4-foot high pedestal far away from any boundaries and took the FR using HolmImpulse.

I took that measurement with the speaker on a 25" stand and with the mic 1 meter from the speaker on the tweeter axis. The stand was placed in the middle of my family room and I used a gated impulse response (I can't recall the exact gate time though.) Then I took a closer measurement of the woofer and ports and summed them and spliced the response at about 200hz. This is the measurement you see for the Alchemy.

[Brian Steele]

Re: Has Anyone Seen the New Kits Lineup at DIYsoundgroup?

I took that measurement with the speaker on a 25" stand and with the mic 1 meter from the speaker on the tweeter axis. The stand was placed in the middle of my family room and I used a gated impulse response (I can't recall the exact gate time though.) Then I took a closer measurement of the woofer and ports and summed them and spliced the response at about 200hz. This is the measurement you see for the Alchemy.

Thanks Jeff. FWIW, I opted for the 4ft stand approach because I wanted to get an idea of what the speaker's 4PI response was like, and with a stand that high I think any aberrations in the measured response cause by reflection from nearby surfaces would be below the speaker's passband. It looks like we basically ended up with the same results, and from the impedance curve the alignment looks pretty similar too.

[fwiler]

I have been interested in these since they came out. Can you describe them? How do they sound? Are there any you could compare them too?

I've done OS MTM, Swope MTM, and various combo's of drivers. I've had Energy, Klipsch, Polk, Boston, KEF, etc. speakers.
I would say the sound of these is unique. I like the high's, probably better than anything I've built, and I think that's due to the waveguide. The mids.... I'm not sure I'm qualified to comment. They weren't my favorite, but this could be due to the fact that I've only run them about 4 hours before the miss' said she didn't want them.
I honestly think they need a break in period. That and I didn't get to play around with different stuffing.

I can say they will play anything you throw at them and they will play loud without sounding loud. Not sure if that makes sense.