Good looking build Prezden. The guy who builds my cabs is out with a new hip and he thinks it will be after the first of the year before he can build my minis like yours.
How do yours sound???
Thanks x and djn. The only thing left to do on them is a few more coats of varnish. I will have to disconnect them so I don't when that will happen 😀
So far I have only listened to a Leonard Cohen cd (10 new songs). The sound is very even, smooth and exceptionally detailed. I could even discern the different voices of the back up chorus. Playing with one of my tpa3116 amps and a portable Sony cd player.
cheers
So far I have only listened to a Leonard Cohen cd (10 new songs). The sound is very even, smooth and exceptionally detailed. I could even discern the different voices of the back up chorus. Playing with one of my tpa3116 amps and a portable Sony cd player.
cheers
Hey x,
I bought 4 of these when they were on clearance at Parts-Express:
Vifa TC9FD-05-16 3-1/2" Full Range Driver 16 Ohm
I see parameters such as Fs, Qts, and VAS are different than the 8 ohm version. Having said that, what's the possibility a 4 of these (2 per cab) would work well in the .53 Mini Karlsonator?
I started a DCR you mentioned in this thread: http://www.diyaudio.com/forums/full...mpressive-cheap-fullrange-3-4-low-bass-2.html
Is it possible the 16 ohm would work well in these- 1 per cabinet?
Thanks,
Mike
I bought 4 of these when they were on clearance at Parts-Express:
Vifa TC9FD-05-16 3-1/2" Full Range Driver 16 Ohm
I see parameters such as Fs, Qts, and VAS are different than the 8 ohm version. Having said that, what's the possibility a 4 of these (2 per cab) would work well in the .53 Mini Karlsonator?
I started a DCR you mentioned in this thread: http://www.diyaudio.com/forums/full...mpressive-cheap-fullrange-3-4-low-bass-2.html
Is it possible the 16 ohm would work well in these- 1 per cabinet?
Thanks,
Mike
I'm considering this for my next build. Will they work well nearfield as computer speakers?about 3ft away from listening position?
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Yes. I have used them exactly for this and they work very well. Use the 0.4x scale with the TC9FD or 3FE25's.
^ Hi X!
What is the advantage of the .53x over the .4x sonically / sound-wise? Reason i'm asking is; i have a fairly large desk and can accommodate the size of .53x.
How do these speakers perform when placed near the back wall?
Btw, you've done a very good job sharing here your projects. I appreciate your help.
What is the advantage of the .53x over the .4x sonically / sound-wise? Reason i'm asking is; i have a fairly large desk and can accommodate the size of .53x.
How do these speakers perform when placed near the back wall?
Btw, you've done a very good job sharing here your projects. I appreciate your help.
0.53x has deeper bass in the 50Hz range vs 70Hz for 0.4x. Against a wall is best for deepest bass extension so no problem there - you will like the sound. The 0.53x also has advantage of higher sensitivity and more headroom as the drivers in parallel have 91dB sensitivity at 2.83v. If you have room, go with the bigger one. Good luck.
It would cost you $25 in parts to build this thing. A great sounding amp and a bargain. You need a 12v laptop supply.
Online Shop 15W+15W TDA7297 Rev B dual Channel Amplifier Board AC/DC 12V No noise High Power Free shipping|Aliexpress Mobile
It is class AB which may have advantages if you are trying to avoid noise emission for radio signals.
X, thanks for this very helpful info, very favorable to my intended application. A couple questions more if you don't mind:
you've built other enclosures for the TC9FD, how would you compare the MK .53x vs the DCR & others in terms of details & lows?
Based on your findings, which is the best driver you've used for the MK 0.53x/0.4x?
Regards,
Anton
you've built other enclosures for the TC9FD, how would you compare the MK .53x vs the DCR & others in terms of details & lows?
Based on your findings, which is the best driver you've used for the MK 0.53x/0.4x?
Regards,
Anton
a question X - did you ever work out an 8 cubic foot external bulk Karlsonator15 to compare to K15?
Not sure what you mean Freddi? You want an apples to apples comparison of Karlasonstor at 8cu ft? That is a big box - what driver?
make the Karlsonator15 the same external bulk as K15 (~7.75 cubic feet) - use a traditional style driver on sale for $199 including the compression driver, make it taller and narrower than K15 and see if the low end can be significantly extended without losing punch.
if you can't get it in the same bulk, then raise it a bit
P AUDIO_BM15CXA
I kind of doubt if Qts is this low but "maybe"
WOOFER MODEL - BM15CXA
Low Frequency Specifications
Nominal Basket Diameter
15" / 381mm
Impedance
8 ohms
RMS Power Rating
350 watts
Program Power Rating 700 watts
Frequency Range
40Hz - 18kHz
Sensitivity (1W/1m)
101dB SPL
Voice Coil Diameter
2.5" / 63.5mm
Magnet Weight 100 oz.
High Frequency Specifications
Rated Impedance 8 ohms
RMS Power Rating 40 watts
Program Power Rating 80 watts
Frequency Range 1.5kHz - 18kHz
Sensitivity (1W/1m) 106dB SPL
Voice Coil Diameter 1.75" / 44.5mm
Magnet Weight 3.74 lbs.
Thiele-Small Parameters
Resonant Frequency (Fs) 39 Hz
Impedance (Re) 5.6 ohms
Mechanical Q (Qms) 6.45
Electrical Factor(Qes) .25
Total Q (Qts) .24
Comp. Equivelant Vol. (Vas)
9.09 ft3 / 257.5 Liters
Voice Coil Overhang (Xmax) 2.75 mm
Surface Area of Cone (Sd) .083 m2
BL Factor (BL) 18.45 T-M
if you can't get it in the same bulk, then raise it a bit
P AUDIO_BM15CXA
I kind of doubt if Qts is this low but "maybe"
An externally hosted image should be here but it was not working when we last tested it.
WOOFER MODEL - BM15CXA
Low Frequency Specifications
Nominal Basket Diameter
15" / 381mm
Impedance
8 ohms
RMS Power Rating
350 watts
Program Power Rating 700 watts
Frequency Range
40Hz - 18kHz
Sensitivity (1W/1m)
101dB SPL
Voice Coil Diameter
2.5" / 63.5mm
Magnet Weight 100 oz.
High Frequency Specifications
Rated Impedance 8 ohms
RMS Power Rating 40 watts
Program Power Rating 80 watts
Frequency Range 1.5kHz - 18kHz
Sensitivity (1W/1m) 106dB SPL
Voice Coil Diameter 1.75" / 44.5mm
Magnet Weight 3.74 lbs.
Thiele-Small Parameters
Resonant Frequency (Fs) 39 Hz
Impedance (Re) 5.6 ohms
Mechanical Q (Qms) 6.45
Electrical Factor(Qes) .25
Total Q (Qts) .24
Comp. Equivelant Vol. (Vas)
9.09 ft3 / 257.5 Liters
Voice Coil Overhang (Xmax) 2.75 mm
Surface Area of Cone (Sd) .083 m2
BL Factor (BL) 18.45 T-M
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better yet - coax which I own http://bjl.audioconcept.free.fr/Archives/03_Caracteristiques_HP/P.AUDIO SYSTEM/SN SERIES/SN-15C.pdf
fs = 41.0, Re= 5.3, Le = 0.36mH, Qms = 5.030, Qes = 0.371, Qts = 0.346, Vas = 214.54 liters, BL = 16.4, Mms = 73.3 gm, Sd = 0.0850 m2, Xmax = 3.3mm, eta zero = 3.82%, Hag = 12.0mm, Hvc = 18.5mm
got one in a vintage K15 = nice sound - good neo HF driver too
fs = 41.0, Re= 5.3, Le = 0.36mH, Qms = 5.030, Qes = 0.371, Qts = 0.346, Vas = 214.54 liters, BL = 16.4, Mms = 73.3 gm, Sd = 0.0850 m2, Xmax = 3.3mm, eta zero = 3.82%, Hag = 12.0mm, Hvc = 18.5mm
got one in a vintage K15 = nice sound - good neo HF driver too
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Just an idea that works for me filling the part above driver:
cut a piece of poliester matt same wide and twice long, fold it and push it in.
The poliester get packed very tight at the end, and less above speaker. The felt help to keep it in place, doesn't fall.
cut a piece of poliester matt same wide and twice long, fold it and push it in.
The poliester get packed very tight at the end, and less above speaker. The felt help to keep it in place, doesn't fall.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
