Jeff Bagby's Continuum Build
I think I must have gotten the (or close to) the last kit Meniscus had because the RS28A-4 tweeter is NLA, seemingly for awhile, as I notice it's been taken off of PE's site as well.
Really strange because, I am not a bookshelf or small monitor type. I bought this kit on impulse, and a bit of novelty due to having heard one pair of LS3/5a's in the later part of the 70's. I had a shop foreman, who was from England, who had carted that pair of speakers with him quite a ways around the world by that point. We (myself, and a few of the other shop guys) all hung out together after work and on weekends. Our stereo speakers were typically louder, party type speakers, so we used to joke with him about his little monitors. I had to admit though, in the small efficiency he lived in at the time, they actually sounded quite good, especially after a few beers. Anyhow, that was the only time I have seen/heard a pair of those and had totally forgotten about them.
I have already built a pair of Jeff Bagby's Fusion-12 design from diysoundgroup, which I am quite fond of, so I have a bit of confidence with his designs. So I start reading about the design goals with the Continuum and I come across a picture of the LS3/5 speakers! That tickled me just enough to instantly click the "add to cart" option! And I need another pair of speakers like a hole in the head.
Still, they're little speakers and I didn't expect much, figuring I'll use them for desktops or something trivial. I made the cabinets out of MDF so not committing to any real money in the finish in the event that they just sound so-so. Well, when I fired these little chunks up, I was so pleasantly surprised by how nice they sounded, that they instantly became pricelessly valuable. An instant, favorite small possession.
Is this the best sounding small speaker I have ever heard? Hard to say. All I can say is that even if it isn't, I don't care. I don't, or will never need a speaker that sounds better than this one in this category for a small, 2.1, music only setup. I have it accompanied by a Dayton 12" Ultimax subwoofer.
Really strange because, I am not a bookshelf or small monitor type. I bought this kit on impulse, and a bit of novelty due to having heard one pair of LS3/5a's in the later part of the 70's. I had a shop foreman, who was from England, who had carted that pair of speakers with him quite a ways around the world by that point. We (myself, and a few of the other shop guys) all hung out together after work and on weekends. Our stereo speakers were typically louder, party type speakers, so we used to joke with him about his little monitors. I had to admit though, in the small efficiency he lived in at the time, they actually sounded quite good, especially after a few beers. Anyhow, that was the only time I have seen/heard a pair of those and had totally forgotten about them.
I have already built a pair of Jeff Bagby's Fusion-12 design from diysoundgroup, which I am quite fond of, so I have a bit of confidence with his designs. So I start reading about the design goals with the Continuum and I come across a picture of the LS3/5 speakers! That tickled me just enough to instantly click the "add to cart" option! And I need another pair of speakers like a hole in the head.
Still, they're little speakers and I didn't expect much, figuring I'll use them for desktops or something trivial. I made the cabinets out of MDF so not committing to any real money in the finish in the event that they just sound so-so. Well, when I fired these little chunks up, I was so pleasantly surprised by how nice they sounded, that they instantly became pricelessly valuable. An instant, favorite small possession.
Is this the best sounding small speaker I have ever heard? Hard to say. All I can say is that even if it isn't, I don't care. I don't, or will never need a speaker that sounds better than this one in this category for a small, 2.1, music only setup. I have it accompanied by a Dayton 12" Ultimax subwoofer.
Caps 3 PC system replaced with a Hi Quality DIY Renderer
I have been using a CA caps variant PC based music system for some years. IT has a async USB card and SSD fitted with LPS for 12v and 5v components.
A year ago I returned to vinyl, heavily rebuilding a technics 1200 and building a DCT phono pre. This excercise highlighted the shortfall with my digital system- a tiring sound with a lack of fine detail highlighted in piano and violin pieces.
At the time I was working on my vinyl a friend told me of a company in Switzerland who made digital audio boards for the OEM market and sold some with an evaluation board to the DIY market -a bit like Hypex in their early days.
Two months ago he sent me his DIY board for evaluation
I was hooked at first listen, using 24/96 files from Linn library I heard crystal clear piano violins, A bit gobsmacked this unit was producing the closest Ive heard to dear old analogue from any digital equipment ive had connected to my system.
I bought one and built it.
All the family young and old ears consider this is the best so far.
Ive now built my second unit so both my systems are on the new Renderers - CAPS SB touch etc all redundant.
I have mentioned this on the CA forum but there may be more interest here in the DIY project.
The company - engineered SA - electronic, engineering and consulting
The board, which includes the Mr-Mod module, their NMR board
Cost circa 420 Swiss Francs -total cost to me with carriage and EU duty into the UK was £ 340
IT needs an ethernet network in and outputs SPDIF ( I2S is available)
a power supply at 3.3v 450 ma-750 ma
a mini 75ohm SMG coax plug with RG179 cable between board and case outlet
a case
I run it from Jriver on my NAS a with J remote on an old ipad and ipod.
Ill try and post a photo but Ive had 3 attempts so far and all I get is locked out and have to retype this, so its my last go.
If i fail ask me for any more info on the build if needed.
The final case to match my Benchmarks
The inards, PSU on the RHS REg and NMR board on the left
A year ago I returned to vinyl, heavily rebuilding a technics 1200 and building a DCT phono pre. This excercise highlighted the shortfall with my digital system- a tiring sound with a lack of fine detail highlighted in piano and violin pieces.
At the time I was working on my vinyl a friend told me of a company in Switzerland who made digital audio boards for the OEM market and sold some with an evaluation board to the DIY market -a bit like Hypex in their early days.
Two months ago he sent me his DIY board for evaluation
I was hooked at first listen, using 24/96 files from Linn library I heard crystal clear piano violins, A bit gobsmacked this unit was producing the closest Ive heard to dear old analogue from any digital equipment ive had connected to my system.
I bought one and built it.
All the family young and old ears consider this is the best so far.
Ive now built my second unit so both my systems are on the new Renderers - CAPS SB touch etc all redundant.
I have mentioned this on the CA forum but there may be more interest here in the DIY project.
The company - engineered SA - electronic, engineering and consulting
The board, which includes the Mr-Mod module, their NMR board
Cost circa 420 Swiss Francs -total cost to me with carriage and EU duty into the UK was £ 340
IT needs an ethernet network in and outputs SPDIF ( I2S is available)
a power supply at 3.3v 450 ma-750 ma
a mini 75ohm SMG coax plug with RG179 cable between board and case outlet
a case
I run it from Jriver on my NAS a with J remote on an old ipad and ipod.
Ill try and post a photo but Ive had 3 attempts so far and all I get is locked out and have to retype this, so its my last go.
If i fail ask me for any more info on the build if needed.
The final case to match my Benchmarks
The inards, PSU on the RHS REg and NMR board on the left
FS: AES Acoustic Elegance TDH12-4 12" Subwoofers - new
I have a pair of new, used, never hooked up TD12H -4ohm. The "H" version is the best for sub use and for smaller enclosures. Fs = 26
$245 each + shipping. Shipping for one should be around $31 and $51 for both. Free pickup for cash in Denver area.
These will come in the original carton with all packaging materials.
These are great-looking speakers. Would work great as subs or in a 3-way design.
Acoustic Elegance TD12H - Sealed or Vented Box Applications
The TD Series woofers are low distortion, high Xmax, wide bandwidth, bass drivers designed for sealed or vented enclosure applications. The TD12H uses a 4 layer flat wire copper coil. They have the highest BL and also highest mass. This allows them to work in smaller vented enclosures and have better low end extension. They make the best pure subwoofer drivers in the series.
TD12H Highlights:
Lambda Motor with Full Copper Faraday Sleeve (FCFS) (Apollo Option available)
Extremely low and linear inductance
Wide bandwidth and detailed midbass
High Xmax with clean suspension travel
High Efficiency upper/midbass
Designed for sealed or vented box applications
Also ideal for SQ Automotive subwoofers
The TD Series woofers are low distortion, high Xmax, wide bandwidth, bass drivers designed for sealed or vented enclosure applications. They work well in a variety of applications including subwoofers, bass/midbass drivers in 2way or 3way systems, and automotive SQ subwoofer applications. The Lambda Motor means they have very low/linear inductance with response extending cleanly to over 1000hz. The high Xmax allows them to play the lowest notes with accuracy and authority. TD woofers have been used in high end recording monitors, home theater subwoofers, and extremely high end hi-fi systems retailing for upwards of $100,000. When you want the most accurate woofer for sealed box applications, look no further than the TD Series.
So why do you have several versions? What do the different letters, M, S, X, and H mean?
The TD Series woofers come in 4 different varieties allowing for a variety of uses.
The TDM woofers are designed specifically for midbass/midrange use. They have higher efficiency and extremely clean upper end extension, playing cleanly to over 2KHz on axis. The Xmax is lower, 6mm, which is a trade off necessary to achieve the high efficiency.
The TD S, X, and H are all similar and can be used in bass/midbass applications. The core parts (cone, surround, spider, motor, and frame) are the same among all models. The only difference between the models is the wire used to wind the voice coils. All extend cleanly to over 1KHz.
The TDS use a 2 layer round wire copper coil for higher Qts. They are typically the option chosen for sealed box applications and larger vented box applications. They are often used in larger floor standing speakers.
The TDX uses a 4 layer flat wire aluminum coil. The BL is slightly higher and mass is slightly lower. They are typically used in vented enclosures where more efficiency is desired.
The TDH uses a 4 layer flat wire copper coil. They have the highest BL and also highest mass. This allows them to work in smaller vented enclosures and have better low end extension. They make the best pure subwoofer drivers in the series.
TD12H-4ohm
Fs: 26.7Hz
Qms: 3.72
Vas: 160 L
Cms: .4 mm/N
Mms: 88.6 g
Rms: 4 kg/S
Xmax: 14 mm(peak)
Xmech: 18 mm(peak)
Sd: 530 sqcm
Vd: 1.48L (p-p)
Qes: .25
Re: 3.5 ohm
Le: .3 mH
Z: 4 ohm
Bl: 14.4 T/m
Pe: 500W (cont.)
Qts: .23
1WSPL: 92.9 dB
2.83V: 96.46 dB
$245 each + shipping. Shipping for one should be around $31 and $51 for both. Free pickup for cash in Denver area.
These will come in the original carton with all packaging materials.
These are great-looking speakers. Would work great as subs or in a 3-way design.
Acoustic Elegance TD12H - Sealed or Vented Box Applications
The TD Series woofers are low distortion, high Xmax, wide bandwidth, bass drivers designed for sealed or vented enclosure applications. The TD12H uses a 4 layer flat wire copper coil. They have the highest BL and also highest mass. This allows them to work in smaller vented enclosures and have better low end extension. They make the best pure subwoofer drivers in the series.
TD12H Highlights:
Lambda Motor with Full Copper Faraday Sleeve (FCFS) (Apollo Option available)
Extremely low and linear inductance
Wide bandwidth and detailed midbass
High Xmax with clean suspension travel
High Efficiency upper/midbass
Designed for sealed or vented box applications
Also ideal for SQ Automotive subwoofers
The TD Series woofers are low distortion, high Xmax, wide bandwidth, bass drivers designed for sealed or vented enclosure applications. They work well in a variety of applications including subwoofers, bass/midbass drivers in 2way or 3way systems, and automotive SQ subwoofer applications. The Lambda Motor means they have very low/linear inductance with response extending cleanly to over 1000hz. The high Xmax allows them to play the lowest notes with accuracy and authority. TD woofers have been used in high end recording monitors, home theater subwoofers, and extremely high end hi-fi systems retailing for upwards of $100,000. When you want the most accurate woofer for sealed box applications, look no further than the TD Series.
So why do you have several versions? What do the different letters, M, S, X, and H mean?
The TD Series woofers come in 4 different varieties allowing for a variety of uses.
The TDM woofers are designed specifically for midbass/midrange use. They have higher efficiency and extremely clean upper end extension, playing cleanly to over 2KHz on axis. The Xmax is lower, 6mm, which is a trade off necessary to achieve the high efficiency.
The TD S, X, and H are all similar and can be used in bass/midbass applications. The core parts (cone, surround, spider, motor, and frame) are the same among all models. The only difference between the models is the wire used to wind the voice coils. All extend cleanly to over 1KHz.
The TDS use a 2 layer round wire copper coil for higher Qts. They are typically the option chosen for sealed box applications and larger vented box applications. They are often used in larger floor standing speakers.
The TDX uses a 4 layer flat wire aluminum coil. The BL is slightly higher and mass is slightly lower. They are typically used in vented enclosures where more efficiency is desired.
The TDH uses a 4 layer flat wire copper coil. They have the highest BL and also highest mass. This allows them to work in smaller vented enclosures and have better low end extension. They make the best pure subwoofer drivers in the series.
TD12H-4ohm
Fs: 26.7Hz
Qms: 3.72
Vas: 160 L
Cms: .4 mm/N
Mms: 88.6 g
Rms: 4 kg/S
Xmax: 14 mm(peak)
Xmech: 18 mm(peak)
Sd: 530 sqcm
Vd: 1.48L (p-p)
Qes: .25
Re: 3.5 ohm
Le: .3 mH
Z: 4 ohm
Bl: 14.4 T/m
Pe: 500W (cont.)
Qts: .23
1WSPL: 92.9 dB
2.83V: 96.46 dB
Dipole attempt SB13PFC + LX5 Lineaum tweeter
I've had those LX5 tweeter in my drawer for 25 years I've always like the liveness they can add to the room. I've decided to use them as surround in a dipole arrangement. SB13PFC Woofer back to back sharing the same enclosure. I build the enclosure and measured the response and ended up with a 10db dip at 430hz one octave wide. It is probably mutual cancellation between the two speakers.
Before i undergo cutting the top to separate the chambers, i am looking for other solutions that would not involving woodworking.
I was thinking of running one woofer like a 2.5way, cross low and skip the BSC on the xover.
Are there solutions, any idea or past experience on similar design from you you can share to remove this dip.
Regards
Before i undergo cutting the top to separate the chambers, i am looking for other solutions that would not involving woodworking.
I was thinking of running one woofer like a 2.5way, cross low and skip the BSC on the xover.
Are there solutions, any idea or past experience on similar design from you you can share to remove this dip.
Regards
Sparkler Audio - model S508 "esprit" ― MC Phono Stage Amplifier
Sparkler Audio S508 Phono Stage $1,100.00
Specifications (S508v/S508i)
Power Supply: Worldwide, depend on market (IEC 3 pin AC inlet), AC110~120V, AC220~240V (factory assembled)
Input Terminals: Unbalanced RCA pin jack, frame ground terminal.
Input Impedance: 0Ω - total gain is determined by cartridge internal resistance.
Gain: 60..75dB（@1kHz) - adjustable by gain switch.
Type: MC cartridge, CR network RIAA equalizing, NF de-emphasis, current amplifier.
Line Output (S508v - voltage-mode): Unbalanced RCA pin jack, 2.2Vrms
Line Output (S508i - current-mode): Unbalanced RCA pin jack, 5.5mAp-p
Operations: Power switch, Gain switch (high/low)
Size W260×H46×D160mm - B5 size, Weight 1.46g (without power cable)
Materials: Stainless steel, hairline finished. Stainless top panel with clear acrylic.
Accessories: power cable for IEC 3 pin AC inlet, userʹs manual.
Specifications (S508v/S508i)
Power Supply: Worldwide, depend on market (IEC 3 pin AC inlet), AC110~120V, AC220~240V (factory assembled)
Input Terminals: Unbalanced RCA pin jack, frame ground terminal.
Input Impedance: 0Ω - total gain is determined by cartridge internal resistance.
Gain: 60..75dB（@1kHz) - adjustable by gain switch.
Type: MC cartridge, CR network RIAA equalizing, NF de-emphasis, current amplifier.
Line Output (S508v - voltage-mode): Unbalanced RCA pin jack, 2.2Vrms
Line Output (S508i - current-mode): Unbalanced RCA pin jack, 5.5mAp-p
Operations: Power switch, Gain switch (high/low)
Size W260×H46×D160mm - B5 size, Weight 1.46g (without power cable)
Materials: Stainless steel, hairline finished. Stainless top panel with clear acrylic.
Accessories: power cable for IEC 3 pin AC inlet, userʹs manual.
Small Dayton PS95-8/DS135-8 Build
Hello
As i have ordered a couple of wifi/bluetooth amplifiers (Arylic Up2Stream Amp 2.0), and wanted to build my own first set of speakers for them.
I found the Dayton PS95-8 and DS135-8 to be the right size(and cheap).
So here is the idea i have come up with:
PS95-8 - full range in upper chamber.
DS135-8 as a low(ish) woofer with a DS135-PR passive radiator in the lower chamber.
The lower chamber has these internal dimensions 15cm/15cm/15cm, and the upper chamber is 15cm/15cm/10cm.
I have uploaded a quick rendering of the idea i have.
What kind of crossover(if any) would be needed? or would notch filters be enough?
Here is the curve of the 2 speakers.
Link to the drivers:
Dayton Audio - PS95-8 3-1/2" Point Source Full-Range Driver 8 Ohm
Dayton Audio - DS135-8 5" Designer Series Woofer Speaker 8 Ohm
Dayton Audio - DS135-PR 5" Designer Series Passive Radiator
Kind regards
As i have ordered a couple of wifi/bluetooth amplifiers (Arylic Up2Stream Amp 2.0), and wanted to build my own first set of speakers for them.
I found the Dayton PS95-8 and DS135-8 to be the right size(and cheap).
So here is the idea i have come up with:
PS95-8 - full range in upper chamber.
DS135-8 as a low(ish) woofer with a DS135-PR passive radiator in the lower chamber.
The lower chamber has these internal dimensions 15cm/15cm/15cm, and the upper chamber is 15cm/15cm/10cm.
I have uploaded a quick rendering of the idea i have.
What kind of crossover(if any) would be needed? or would notch filters be enough?
Here is the curve of the 2 speakers.
Link to the drivers:
Dayton Audio - PS95-8 3-1/2" Point Source Full-Range Driver 8 Ohm
Dayton Audio - DS135-8 5" Designer Series Woofer Speaker 8 Ohm
Dayton Audio - DS135-PR 5" Designer Series Passive Radiator
Kind regards
[WIRING QUESTION] Double mono Class D Wiring questioning Help !
Hi amigos,
I am in the process of making a new double MONO Class D Amplifier.
I got two mono 300W Board with a LLC 800W PSU double rail 60VDC.
I wonder what is the right wiring ? Picture 1 or 2 ? if other, can you correct in the below pictures.
unfortunately I did not find any assembly instructions...
I am in the process of making a new double MONO Class D Amplifier.
I got two mono 300W Board with a LLC 800W PSU double rail 60VDC.
I wonder what is the right wiring ? Picture 1 or 2 ? if other, can you correct in the below pictures.
unfortunately I did not find any assembly instructions...
Some Class A pcbs for sale designed by xrk971/AKSA/JPS64/Jhofland...
Hi, I have some Class A pcbs to sell. Prices are marked at a good discount already, but all offers considered. Shipping is not included. Shipped from Western Canada.
Image 1: Alpha 20 pcb. I have 2 pairs of these with pads and 1 pair without pads. $30 USD / pair.
Image 2: Dual Rail SLB pcb. I have 6 of these. $12 USD / each.
Image 3: ABBB pcb. I have 2 of these. $75 USD / pair.
Image 4: Alpha BB pcb. I have 2 of these. $45 USD / pair.
If interested, please PM me. Also have a look at my other 3 threads posted earlier for some other deals on Tube, Class AB, ClassD pcbs.
Regards,
Myles
Image 1: Alpha 20 pcb. I have 2 pairs of these with pads and 1 pair without pads. $30 USD / pair.
Image 2: Dual Rail SLB pcb. I have 6 of these. $12 USD / each.
Image 3: ABBB pcb. I have 2 of these. $75 USD / pair.
Image 4: Alpha BB pcb. I have 2 of these. $45 USD / pair.
If interested, please PM me. Also have a look at my other 3 threads posted earlier for some other deals on Tube, Class AB, ClassD pcbs.
Regards,
Myles
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