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09-24-2022, 11:02 PM
(This post was last modified: 09-30-2022, 04:29 AM by Chello.)
TONIGHT'S EXPERIMENT
I just had to try - what happens if..?
Something I intend to try several times over many years is to cut into an ordinary oil funnel, and place it on a tweeter.
I tried with 3 different sizes on an old State of the Art Philips AD 0163 T8 tweeter, after creating a simple filter that cuts away all frequencies below 12,700Hz by 6dB (a capacitor of 1.5uF).
What a difference without funnel and with funnel - the difference is so great that it must be experienced in order to be believed.
My existing horns do the same, but I'm now absolutely sure I'll have an extra horn on top, with a good bullet tweeter as a basis.
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KEYBOARDS, SYNTHS & MODULES I HAVE HAD AND HAVE
*Casio CTK 811-ex *Roland EXR-7 76 *Yamaha DGX-620 *Yamaha PSR-550 *Yamaha PSR-S700 *Korg Pa800 *Korg Pa3X 61 *Casio WK-7500 *Yamaha Tyros5 61 *Ketron Audya5 61 *Yamaha PSR S950 *Solton X8 Chromatic *Yamaha Tyros4 10th Anniversary *Korg Pa4X 61 *Roland BK-7m
*Technics KN-6000 *Technics KN-7000 *Roli Seaboard RISE 49 *Deebach MAX Plus *Yamaha Genos *Korg Pa700 *Korg Kronos2 73 *Tyros4 61 *Ketron Audya 76 *Deebach BlackBox *Korg Pa2X Pro *Yamaha A3000 *Medeli AKX10 *Korg Nautilus 73 *Yamaha DGX-670 *Korg Krome EX-88 *Korg OASYS 76 *Korg Pa5X 76 *Yamaha Tyros1 *Ketron Audya 76
MY PA EQUIPMENT NON-ACTIVE AND ACTIVE
*Aune S6 32 bit DAC *MOTU 32 bit Audio Interface *FM Acoustics FM 300A Power amp (Clone) *MBL 6010 Pre Amp (Clone) *STAX SR-L300 (Lambda) electrostatic headphones with STAX SRM-252S Amplifier *beyerdynamic T70 headphones (without pads) *Jamo Cornet 145 *Quadrophonic speaker system consisting of baffles with horns equipped with Seas Exotic fullrange units (MeloDavid clones) *2 cabinets equipped with 2 pcs 6.5" Seas Excel /1 Seas Prestige 6.5" fullrange/1 pc Fountek NeoPro5i (with Dali DaCapo membrane) *Tweeter horns with Philips unit *Hexagonal subwoofer with 12 pieces Push&Pull coupled Seas Prestige 8" units and built-in XTZ power amplifiers & Cambridge C500 as pre amplifier
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09-29-2022, 06:58 PM
(This post was last modified: 09-30-2022, 04:28 AM by Chello.)
THE EXPERIMENT CONTINUES
For the past few days, I've been making cabinets for my new horns, and these are now almost finished.
Funnels with a diameter of 200mm are selected, as these gave the best results - these are now sanded and prepared.
I have experimented with different values for the crossover capacitor, and this gave very surprising results.
These Philips tweeters are truly State of the Art – they are better than Scanspeak Revelator ring radiator tweeters, which cost many times more.
Even if I choose a split frequency as low as 3.500Hz (5.6uF), the sound is never strained or intrusive.
What's even more interesting and surprising is that drum crash now sounds exactly as it should; the way I remember my Yamaha monitors managing this in their time.
More photos will follow.
Shared knowledge provides increased knowledge
If we all share everything we have, we all have everything
KEYBOARDS, SYNTHS & MODULES I HAVE HAD AND HAVE
*Casio CTK 811-ex *Roland EXR-7 76 *Yamaha DGX-620 *Yamaha PSR-550 *Yamaha PSR-S700 *Korg Pa800 *Korg Pa3X 61 *Casio WK-7500 *Yamaha Tyros5 61 *Ketron Audya5 61 *Yamaha PSR S950 *Solton X8 Chromatic *Yamaha Tyros4 10th Anniversary *Korg Pa4X 61 *Roland BK-7m
*Technics KN-6000 *Technics KN-7000 *Roli Seaboard RISE 49 *Deebach MAX Plus *Yamaha Genos *Korg Pa700 *Korg Kronos2 73 *Tyros4 61 *Ketron Audya 76 *Deebach BlackBox *Korg Pa2X Pro *Yamaha A3000 *Medeli AKX10 *Korg Nautilus 73 *Yamaha DGX-670 *Korg Krome EX-88 *Korg OASYS 76 *Korg Pa5X 76 *Yamaha Tyros1 *Ketron Audya 76
MY PA EQUIPMENT NON-ACTIVE AND ACTIVE
*Aune S6 32 bit DAC *MOTU 32 bit Audio Interface *FM Acoustics FM 300A Power amp (Clone) *MBL 6010 Pre Amp (Clone) *STAX SR-L300 (Lambda) electrostatic headphones with STAX SRM-252S Amplifier *beyerdynamic T70 headphones (without pads) *Jamo Cornet 145 *Quadrophonic speaker system consisting of baffles with horns equipped with Seas Exotic fullrange units (MeloDavid clones) *2 cabinets equipped with 2 pcs 6.5" Seas Excel /1 Seas Prestige 6.5" fullrange/1 pc Fountek NeoPro5i (with Dali DaCapo membrane) *Tweeter horns with Philips unit *Hexagonal subwoofer with 12 pieces Push&Pull coupled Seas Prestige 8" units and built-in XTZ power amplifiers & Cambridge C500 as pre amplifier
Posts: 16,393
Threads: 13,804
Thanks Received: 58,146 in 15,243 posts
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Joined: Sep 2021
Shared knowledge provides increased knowledge
If we all share everything we have, we all have everything
KEYBOARDS, SYNTHS & MODULES I HAVE HAD AND HAVE
*Casio CTK 811-ex *Roland EXR-7 76 *Yamaha DGX-620 *Yamaha PSR-550 *Yamaha PSR-S700 *Korg Pa800 *Korg Pa3X 61 *Casio WK-7500 *Yamaha Tyros5 61 *Ketron Audya5 61 *Yamaha PSR S950 *Solton X8 Chromatic *Yamaha Tyros4 10th Anniversary *Korg Pa4X 61 *Roland BK-7m
*Technics KN-6000 *Technics KN-7000 *Roli Seaboard RISE 49 *Deebach MAX Plus *Yamaha Genos *Korg Pa700 *Korg Kronos2 73 *Tyros4 61 *Ketron Audya 76 *Deebach BlackBox *Korg Pa2X Pro *Yamaha A3000 *Medeli AKX10 *Korg Nautilus 73 *Yamaha DGX-670 *Korg Krome EX-88 *Korg OASYS 76 *Korg Pa5X 76 *Yamaha Tyros1 *Ketron Audya 76
MY PA EQUIPMENT NON-ACTIVE AND ACTIVE
*Aune S6 32 bit DAC *MOTU 32 bit Audio Interface *FM Acoustics FM 300A Power amp (Clone) *MBL 6010 Pre Amp (Clone) *STAX SR-L300 (Lambda) electrostatic headphones with STAX SRM-252S Amplifier *beyerdynamic T70 headphones (without pads) *Jamo Cornet 145 *Quadrophonic speaker system consisting of baffles with horns equipped with Seas Exotic fullrange units (MeloDavid clones) *2 cabinets equipped with 2 pcs 6.5" Seas Excel /1 Seas Prestige 6.5" fullrange/1 pc Fountek NeoPro5i (with Dali DaCapo membrane) *Tweeter horns with Philips unit *Hexagonal subwoofer with 12 pieces Push&Pull coupled Seas Prestige 8" units and built-in XTZ power amplifiers & Cambridge C500 as pre amplifier
Posts: 16,393
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Thanks Received: 58,146 in 15,243 posts
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These are a pair of fantastic tweeters, which are actually also used in McIntosh systems, which confirms the quality.
About 45 years old, but way ahead of its time.
I found them in a pair of Bang&Olufsen speakers that my father had.
They have an unusually low FS (free air resonance) of 1300Hz, and go up to 22kHz, with a sensitivity of well over 90dB (not stated).
They are also intended for 6dB filters, which again says something about the quality.
I have tested all possible crossover frequencies and they sound better than some others, such as Fountek NeoPro 5i or Scanspeak Revelator, which cost many times more.
Details between 10kHz and 22kHz are recreated in a naturalness never heard before with tweeters.
I have planned an upgrade of the horns I made for them with some 30cm in diameter against my 20cm, plus higher quality silver capacitors.
I use them primarily as near-field monitors for detail work with the Pa5X.
Shared knowledge provides increased knowledge
If we all share everything we have, we all have everything
KEYBOARDS, SYNTHS & MODULES I HAVE HAD AND HAVE
*Casio CTK 811-ex *Roland EXR-7 76 *Yamaha DGX-620 *Yamaha PSR-550 *Yamaha PSR-S700 *Korg Pa800 *Korg Pa3X 61 *Casio WK-7500 *Yamaha Tyros5 61 *Ketron Audya5 61 *Yamaha PSR S950 *Solton X8 Chromatic *Yamaha Tyros4 10th Anniversary *Korg Pa4X 61 *Roland BK-7m
*Technics KN-6000 *Technics KN-7000 *Roli Seaboard RISE 49 *Deebach MAX Plus *Yamaha Genos *Korg Pa700 *Korg Kronos2 73 *Tyros4 61 *Ketron Audya 76 *Deebach BlackBox *Korg Pa2X Pro *Yamaha A3000 *Medeli AKX10 *Korg Nautilus 73 *Yamaha DGX-670 *Korg Krome EX-88 *Korg OASYS 76 *Korg Pa5X 76 *Yamaha Tyros1 *Ketron Audya 76
MY PA EQUIPMENT NON-ACTIVE AND ACTIVE
*Aune S6 32 bit DAC *MOTU 32 bit Audio Interface *FM Acoustics FM 300A Power amp (Clone) *MBL 6010 Pre Amp (Clone) *STAX SR-L300 (Lambda) electrostatic headphones with STAX SRM-252S Amplifier *beyerdynamic T70 headphones (without pads) *Jamo Cornet 145 *Quadrophonic speaker system consisting of baffles with horns equipped with Seas Exotic fullrange units (MeloDavid clones) *2 cabinets equipped with 2 pcs 6.5" Seas Excel /1 Seas Prestige 6.5" fullrange/1 pc Fountek NeoPro5i (with Dali DaCapo membrane) *Tweeter horns with Philips unit *Hexagonal subwoofer with 12 pieces Push&Pull coupled Seas Prestige 8" units and built-in XTZ power amplifiers & Cambridge C500 as pre amplifier
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