Marty brought his "Trooper Junior" speakers. Drivers were the TL NC26 tweeters, B&G Neo8 mids, and Eton 11-612 woofers. Excellent sound. Sorry to hear about the tweeter damage on the way home.
Ron E. brought his Krystal MTM's and played them with his new MCM 55-5670 concrete tubular bandpass subs (4th order), which were driven by Foster plate amps. The Krystal MTM's use the Neo3 pdr tweeters flanked by two NLA Peerless 830862 Nomex woofers. They sounded really good, the bandpass blended well with the Krystals from where I was sitting.
Kelly brought a pair of Siegfried Linkwitz LX521's. Drivers were the Seas H1396, H1658-04, 01004-04 and H1659-08. I thought the bass sounded very tight for an open baffle speaker, driver integration and stereo imaging seemed very good, although I heard later that some listeners did not seem to like them.
Brad S. (hifiside) brought his large (22" x 46" tall) "OB 2.0" project. Drivers were: 1) Tweeter "Beast mode" high end DX25BG60-04 modified to an open back configuration with a piece of felt over the back to protect it, 2) Mid section: 6.5" Maxfidelity (NLA), and 3) Low End: NLA Lanzar 15" and 18" woofers. Per Brad's facebook project pad post, the upper tweeter to mid xover appears to be approximately 2.3kHz. Don't know about the lower xover points. These speakers sounded fantanstic. And loud. They could really pack a punch. Some people say that open back speakers sometimes sound soft and muddy down low, but that was not the case with these speakers. The bass, from where I was standing in the back of the room, was tight, punchy and deep. Finish appears to be a highly polished metalic gold, picked out by Brad's wife.
From left to right: Kelly, Bryan K., George, Marvin S., Brad S., and Jason P.
Ron E's 3D printed speakers. I could not find driver or xover data for these. They sounded good and looked much better in person compared to the photos. Photos tend to highlight the textured appearance from the 3D printing process.
@4thtry said:
Ron E's 3D printed speakers. I could not find driver or xover data for these. They sounded good and looked much better in person compared to the photos. Photos tend to highlight the textured appearance from the 3D printing process.
Thanks for posting all the photos and captions Bill.
Ron
PS The bar stool in the background works really well as a speaker stand. My wife found 3 of them at Habitat for $30. There are a large variety on the market and many have square tops
Nick S. (uglywoofer) "Carl & Stuart" speakers. These were the Fan Favorite and the 2nd place <$300 category winner at this year's Speaker Design Competition (SDC). The external driver was a DIY coax that Nick made using a Dayton RS100 woofer and a SB14 tweeter. The woofer was a Dayton DSA135 mounted internally in a bandpass configuration and vented out the rear end of the enclosure. Very impressive sound coming from such a small enclosure. Soundstage imaging was very good from where I was sitting. Beautiful cabinets and finishing work as well!!
Craig S. (PWRRYD) brought these prototype speakers. I could not find the tent card, so Craig will have to fill in the xover and driver details. EDIT: Name: JTS's (his son's initials). Drivers: Dayton GF180-4 woofer and MOQ Peerless DA25BG08-06 tweeter. Xover: 1400Hz LR4.
From left to right: Tom S., Jason P., and Craig S. (PWRRYD)
Thanks Bill! The prototypes are a little project I've been working on with my Son. He hasn't come up with a fancy name yet so I just called them the JTS's (his initials). They sport the Dayton GF180-4 woofers in 12 Liters. Those woofers would play much lower in a larger box, but then their power handling really falls off. Bryan abused the heck out of them with the Barbie Girl track and while they were starting to strain they never unloaded or bottomed out. Wheh! LOL
The tweeter is the MOQ Peerless DA25BG08-06. I crossed the drivers over very low, right at 1400 Hz LR4. That's where they melded together the best.
Scott S. brought his "Racetrack 3-way" Drivers were the AMT Mini-8 tweeter, TEBM46 midrange, and SB15SCFR39 woofers. These sounded very good from my location, nice and "airy" on top with a smooth, wide open midrange quality.
John H. brought his "LR Mains" RST-28A tweeter and DSA115 mid/woofers.
Tom S. brought his "SPs" (spare parts). It was a father/son project and his son did almost all the woodwork (with a little help from Dad setting up the saw and router). Per Tom the "Woofer = NLA Peerless 6.5" model 850122 (used from Ebay - $15each). Tweeter = NLA Dali buyout - it's a Vifa/Tymphany BC25TG15-04 (maybe $7 from PE many years ago). Cabinet = .5 CuFt tuned to around 47Hz (mostly leftover MDF from car subwoofer projects) Crossover = LR4 (well...mostly) at 2400Hz - 2nd order LP/3rd order HP with a LR series shelving filter to pull down the top octave. All surplus caps 1uf, .47uf tubular polyesters and 2.2uf Panasonics dipped polyesters."
Marvin S's "SB Acoustics Micro" speakers. Sporting a very unique and interesting "snake oil infused" speaker finish (per Scott S.) See side closeup shot.
Finally, here is a small speaker that I could not identify. There was no tent card. I'm sorry, but I have no idea as to who brought this one. I must have been out of the room when it was demo'd. The tweeter says "Polk Audio" along the bottom edge and the back has a label with the words "Monitor XT15".
It's a Polk XT15 speaker that goes for $150 a pair that someone brought just to see how it compared to small DIY speakers. I think the consensus was that it was a pleasant sounding little speaker.
I like how Marvin set the baffle off the box with the black screen spline. Serves a dual purpose - a seal for the baffle and aesthetic contrast. The fabric reminds me of cantaloupe...must be because I'm hungry right now.
Hi Dave, That was my design using the now NLA 55-2185 that Zaph had tested. Although I really liked those speakers, the cabinets were repurposed a few years ago and I tossed the baffles last month. I'm thinking I should try those woofers with the Beast Mode tweeters.
As fast as you build these things its a wonder they have time to collect dust at all, JR.
Your XO work is renowned concerning imaging and sound-stage from all recent feedback.
@Steve_Lee said:
As fast as you build these things its a wonder they have time to collect dust at all, JR.
Your XO work is renowned concerning imaging and sound-stage from all recent feedback.
This summer/fall was not normal for me as far as build rates go. Just got a wild hair up my ass for some reason and made a lot of sawdust.
Comments
Marty brought his "Trooper Junior" speakers. Drivers were the TL NC26 tweeters, B&G Neo8 mids, and Eton 11-612 woofers. Excellent sound. Sorry to hear about the tweeter damage on the way home.
Ron E. brought his Krystal MTM's and played them with his new MCM 55-5670 concrete tubular bandpass subs (4th order), which were driven by Foster plate amps. The Krystal MTM's use the Neo3 pdr tweeters flanked by two NLA Peerless 830862 Nomex woofers. They sounded really good, the bandpass blended well with the Krystals from where I was sitting.
Kelly brought a pair of Siegfried Linkwitz LX521's. Drivers were the Seas H1396, H1658-04, 01004-04 and H1659-08. I thought the bass sounded very tight for an open baffle speaker, driver integration and stereo imaging seemed very good, although I heard later that some listeners did not seem to like them.
Brad S. (hifiside) brought his large (22" x 46" tall) "OB 2.0" project. Drivers were: 1) Tweeter "Beast mode" high end DX25BG60-04 modified to an open back configuration with a piece of felt over the back to protect it, 2) Mid section: 6.5" Maxfidelity (NLA), and 3) Low End: NLA Lanzar 15" and 18" woofers. Per Brad's facebook project pad post, the upper tweeter to mid xover appears to be approximately 2.3kHz. Don't know about the lower xover points. These speakers sounded fantanstic. And loud. They could really pack a punch. Some people say that open back speakers sometimes sound soft and muddy down low, but that was not the case with these speakers. The bass, from where I was standing in the back of the room, was tight, punchy and deep. Finish appears to be a highly polished metalic gold, picked out by Brad's wife.
From left to right: Kelly, Bryan K., George, Marvin S., Brad S., and Jason P.
Bill, your photos look great as usual. For web consumption, the phone photos are definitely sufficient!
Ron E's 3D printed speakers. I could not find driver or xover data for these. They sounded good and looked much better in person compared to the photos. Photos tend to highlight the textured appearance from the 3D printing process.
From left to right: Ani, Ron E., and Jason P.
The drivers were:
Dayton TD20F-4 3/4" Tweeter
Tectonic TEBM65C20F-8 3" Woofer
I think I crossed them at 4K.
Thanks for posting all the photos and captions Bill.
Ron
PS The bar stool in the background works really well as a speaker stand. My wife found 3 of them at Habitat for $30. There are a large variety on the market and many have square tops
Nick S. (uglywoofer) "Carl & Stuart" speakers. These were the Fan Favorite and the 2nd place <$300 category winner at this year's Speaker Design Competition (SDC). The external driver was a DIY coax that Nick made using a Dayton RS100 woofer and a SB14 tweeter. The woofer was a Dayton DSA135 mounted internally in a bandpass configuration and vented out the rear end of the enclosure. Very impressive sound coming from such a small enclosure. Soundstage imaging was very good from where I was sitting. Beautiful cabinets and finishing work as well!!
Brad S = (hifiside) on forum, Instagram and YouTube.
https://www.jfcomponents.com/
"Barbie Girl" is Satan's tune and is still in my head. Thanks Amanda.
Craig S. (PWRRYD) brought these prototype speakers. I could not find the tent card, so Craig will have to fill in the xover and driver details. EDIT: Name: JTS's (his son's initials). Drivers: Dayton GF180-4 woofer and MOQ Peerless DA25BG08-06 tweeter. Xover: 1400Hz LR4.
From left to right: Tom S., Jason P., and Craig S. (PWRRYD)
Craig S. (PWRRYD) also brought the "Tre Stemmes" using all Peerless drivers. Good sounding combination.
Thanks Bill! The prototypes are a little project I've been working on with my Son. He hasn't come up with a fancy name yet so I just called them the JTS's (his initials). They sport the Dayton GF180-4 woofers in 12 Liters. Those woofers would play much lower in a larger box, but then their power handling really falls off. Bryan abused the heck out of them with the Barbie Girl track and while they were starting to strain they never unloaded or bottomed out. Wheh! LOL
The tweeter is the MOQ Peerless DA25BG08-06. I crossed the drivers over very low, right at 1400 Hz LR4. That's where they melded together the best.
PS - The pictures make me look fat
Scott S. brought his "Racetrack 3-way" Drivers were the AMT Mini-8 tweeter, TEBM46 midrange, and SB15SCFR39 woofers. These sounded very good from my location, nice and "airy" on top with a smooth, wide open midrange quality.
John H. brought his "LR Mains" RST-28A tweeter and DSA115 mid/woofers.
Tom S. brought his "SPs" (spare parts). It was a father/son project and his son did almost all the woodwork (with a little help from Dad setting up the saw and router). Per Tom the "Woofer = NLA Peerless 6.5" model 850122 (used from Ebay - $15each). Tweeter = NLA Dali buyout - it's a Vifa/Tymphany BC25TG15-04 (maybe $7 from PE many years ago). Cabinet = .5 CuFt tuned to around 47Hz (mostly leftover MDF from car subwoofer projects) Crossover = LR4 (well...mostly) at 2400Hz - 2nd order LP/3rd order HP with a LR series shelving filter to pull down the top octave. All surplus caps 1uf, .47uf tubular polyesters and 2.2uf Panasonics dipped polyesters."
Ani's curvy translam 2-ways with active dsp crossover:
For reference that is Scott Sehlin sitting between Dave Ellis and me in the back row of this picture.
I liked Tom's SP's. I think he got the balance just right (after some Friday night surgery
)
JR's "Nemo" speakers using Motus/Viawave drivers. Very good stereo imaging and depth, which always seems to be the case with JR's speakers.
JR's "Sugar Cubes" using SB/Dynavox drivers. Speaker named by Mrs. JR. Again, good stereo imaging and depth perception, typical of all JR speakers.
Marvin S's "SB Acoustics Micro" speakers. Sporting a very unique and interesting "snake oil infused" speaker finish (per Scott S.) See side closeup shot.
Finally, here is a small speaker that I could not identify. There was no tent card. I'm sorry, but I have no idea as to who brought this one. I must have been out of the room when it was demo'd. The tweeter says "Polk Audio" along the bottom edge and the back has a label with the words "Monitor XT15".
It's a Polk XT15 speaker that goes for $150 a pair that someone brought just to see how it compared to small DIY speakers. I think the consensus was that it was a pleasant sounding little speaker.
Ron
I like how Marvin set the baffle off the box with the black screen spline. Serves a dual purpose - a seal for the baffle and aesthetic contrast. The fabric reminds me of cantaloupe...must be because I'm hungry right now.
Would that be the "55-1455" 8" woofer?
Hi Dave, That was my design using the now NLA 55-2185 that Zaph had tested. Although I really liked those speakers, the cabinets were repurposed a few years ago and I tossed the baffles last month. I'm thinking I should try those woofers with the Beast Mode tweeters.
Sorry for the dust on the Nemo.
As fast as you build these things its a wonder they have time to collect dust at all, JR.
Your XO work is renowned concerning imaging and sound-stage from all recent feedback.
This summer/fall was not normal for me as far as build rates go. Just got a wild hair up my ass for some reason and made a lot of sawdust.
Dust or not, those sounded excellent, JR.
Thank you, sir. Been my go to in the Nerdery for over a year now. Although, those Sugar Cubes might get a spot in the rotation.
I agree, both sounded great. I particularly enjoyed the Nemo.
I thought the Viawave sounded spectacular.
Ron