Added a Pete Riggle "Hiraga-style" crossover to my Altec A7's
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- Опубликовано: 6 сен 2024
- A cut from a classic record, as requested. Looking for informed opinion as to whether experts think this an improvement over stock crossover, and if it sounds more natural or not, if not where does it fall down. Note, crossovers have circuit for super-tweeter which I have not added (yet).
Pete is really a very creative fellow, and a heck of a craftsman, besides the crossover he also makes killer tonearms
Beautiful! Another A7 VOTT affectionado here!
Sounds great as i listen through my Klipsch La Scalas !The A7s are a classic!
A wonderful wall of sound thank you.
I bet the Ayon amplifier helps with the sound quality.
Sometimes a super tweeter will fill in the leading edge of a large woofer, which inherently has high mass compared to a small driver.
Since that video I have replaced the Ayon with a Soundgate Ongaku replica. Presently I am playing with the super tweeters shut off as I can not hear a benefit with them on.
@@Rensselaer1586 Is the soundgate amp a little better ? I like trying a few tweeks, so I would try either the Lessloss speaker filters or the Bybee speaker bullets. Tweeks can be expensive, but they are fun IMHO.
Great!
Howdy and well done. Pete builds the best Jean Hiraga crossovers, a sure bet and great investment. These must be the 800hz variant, small format?
I do not know what “small format” means. The crossover is crossed at 500Hz without the super tweeters engaged it is as Hiraga designed, switching on the super tweeter circuit diverts upper treble. Since changing my compression drivers to the new 802 8G AlNiCo units from Great Plains Audio, I am leaving it two-way (no super tweeters).
They say A7 dont have much down after 100Hz but this plays nicely around 60Hz. Did the crossover help in that regard or is the secret in amps?
I have not measured the frequency response of mine but would guess 60 Hz is about right. Pete told me that adding super tweeters somehow improves the bass but couldn’t explain why. I have read where people who have added sub-woofers to the A7’s never felt they meshed well. Using two 15” horn loaded bass speakers per side does work, but I am not sure how this crossover would work (unless 16ohm compression driver then two 8-ohm 15” bass speakers wired in series?). Personally, I don’t really miss the deep bass as, if the rest great, the music played, through my speakers anyway, is coherent/seamless, and through some “Audio detail 211 mono-blocks” I recently auditioned, competitive with the best-sounding systems in the world.
Today's new models are hard to find the warmth of the past
The early days of audio were of low-powered SET amps and high efficiency horn loaded (magnet and field coil) speakers. Those engineers were concerned with getting the sound correct, to sound real. The horns were built large in order to reproduce sound waves that were at least as big. As time passes, people want smaller speakers (for their homes, studio etc.) which, though smaller, were inefficient so needed more power. The triodes were then paired up into push-pull designs that doubled the power with a loss of sound quality associated with splitting the signal, power each half separately then re-combining it to a less-natural but greater-powered signal. Then valves (predominately even order harmonics, like musical instruments, quite high in 2nd and fourth, but that masks higher order even and odd order harmonics) were replaced with solid-state transistors (lower level but predominately odd order out to the higher level harmonics, causing listener fatigue, but helping struggling bass from smaller speakers). Then adding sub-woofers, super tweeters, with separate amplifiers with elaborate crossovers, cheap electrolytic capacitors and resistors, wire, etc to save on costs. In the end, some systems project better sound stages, some more extended highs, some more bass slam, all those “hi-fi” aspects, but at the cost of natural sounding music, and have not IMHO, surpassed the “warmth” of those early designs.
As a consumer of this audio style of content, I have an iPhone for play back, you have “who knows what recording effort?” iPhone? Professional microphones? Editing Software? “Oh just a touch of Reverb to deal with the conversion process!?🤔” who knows what your room size is or how you reached my iPhone…. I am relying on you to stand up at the end of your video and say something like “the stock crossovers were old and grungy, I read author X and tried his idea, I actually had these parts on hand and put it together like this… although I didn’t like X and I’m going to try Y next, perhaps y’all can tell me what possibilities of Z might be?”
Just asking me to comment on a result in the dark, is worthless to both of us” unless you just need an ego stroke!
“Dope Brah” “Fire”!
Actually the click bait that got me was your Original handmade Face Plate & Author.
My apologies for not describing what you hear better. My starting this RUclips channel was so I could send holiday vids to my family living in the US (DVD there made and played back with NTSC system, here in UK PAL), but started adding hi fi vids as and when I made upgrades predominately for friends to comment. I did put a couple on the “What’s Best “ forum, done with my Sony camera and was told the only way to accurately compare is if all recording done with a mobile telephone. My telephone is the iPhone 8 which doesn’t seem to do sound recording very well as they sound inferior to other peoples recordings and no way like my system sounds live. There is no sound treatment in my listening room.
Where can i get these cross overs? Do they have one for model 19? Thanks
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