What did you Biamp with? How did you attach the amps. Vertical or horizontal.
They look similar to mine. I have 2x15 and a 10" coax.
SET amp owners thread
- Thread starter bonzo75
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They look similar to mine. I have 2x15 and a 10" coax.
Interesting! What is its efficiency and are you preventing bass from reaching the amp that drives the Platinum?
I use the Ayon Spark V (18w SET) for the full range (103db sensitivity), which i let roll off naturally. I run the W15 (twin coil) woofers (93db sensitivity) with two Yamaha PX5 (set in parallel mode so both coils are seeing a separate amp and rolling off at 150hz, 12db).
Initially i had my heart set on a pair of Pure Audio Project Trio with coax, but at $16k AUD plus taxes, these came in at half the price.
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I thought about doing similar. A pro audio PA amp with active crossover to run the woofer. Why Yamaha. I heard their amps are not as good as they use to be. Are you using an older nodel. I think mine cross around 400 to 600 hertz. Thats a problem as most crossovers don't do that.
I think you'll find that if you can keep the bass out of the SET it will sound better (smoother, more detailed) right away.
SETs have real troubles with bass because the output transformer would be enormous (small refrigerator size) if it were to actually have enough inductance to support the bass frequencies and doing so would mean it has no high frequency bandwidth. It doesn't due to a 'cut core' which is used to prevent saturation distortion in the core (magnetic laminations) of the output transformer. So lower distortion is traded off for limited low frequency capability due to low inductance at low frequencies.
Since inductance is what makes transformers work, the load impedance to which the output tube is subjected gets very low (approaches the DC resistance of the wire in the primary winding, which is only a few hundred Ohms) and isn't the sort of thing the tube should endure. So limiting the bass response is helpful. It will also help you have more power available to the overall result is lower distortion at nearly any volume at which you can play the system right now.
There are very simple ways to do this- by using a small coupling caps that limits the bass at the input of the amp, or by replacing an existing cap inside the amp to achieve the same result.
I have a Spark as well in my biamped second system. I use it on the bass/mid but in my system that is a 99dB driver from Supravox in a TQWT cabinet. The tweeters are compression drivers driven by 300B monos.
I use the Ayon Spark V (18w SET) for the full range (103db sensitivity), which i let roll off naturally. I run the W15 (twin coil) woofers (93db sensitivity) with two Yamaha PX5 (set in parallel mode so both coils are seeing a separate amp and rolling off at 150hz, 12db).
Yes, it's a new one. I bought the Yamaha as recommended from a friend who A/B'd it with the Crown and other amps in the class. He said the Yamaha was easily the best of the bunch. But because it's crossing over at 150Hz, i'm not hearing anything negative. Rather the contrary. I've never experienced bass like this in my room. Even compare to when i had my JBL 4365 with SVS SB16 sub. Sure the sub went deeper, but that system never moved air like this.
Can you set the crossover to cut off at 600 hertz and role of at 24db? As in, I want the bass up to 600 on the woofers.
When you want work with yamaha amp max (150hz/12db cut) to activated your woofer.
You need to add a good midrange driver or a good coax driver 10" or bigger that easy works down under 100hz. Exsample
www.headquarteraudio.de
I have test alot in last 8 years..to optimize
You need to add a good midrange driver or a good coax driver 10" or bigger that easy works down under 100hz. Exsample
QUNIQUE RS OPEN BAFFLE | HEADquarter Audio Mike Christ e.K.
www.headquarteraudio.de
I explained in my last post what happens when bass frequencies get into an SET.
You might give it a try. The people I know who have the most success with SETs and are also some of the most ardent about their qualities all make sure the SET doesn't do the bottom octaves. You'll also have more musical power since the SET isn't saddled with deep bass notes that take up most of the power.
Initially i tried crossing over at 400Hz/24db, but it did not sound right. Lii Song recommended i start at 250Hz and work my way down. They said the sweet spot would be somewhere between 120Hz - 150Hz. I settled on 150Hz/12db. To me, it's just right.
My speaker crosses at 600 to 800. Or so I am told to try around there. When you tried at 250, did it cut the low off at 50 hertz?
Based on a compare here, the owner of those Kondo’s placed an order for the GM70 amp that I like.
It's not a Ming Da, he was a Ming Da distro but designs his own amps - of which I like the GM70 and have played it on many videos over the years. It has outdone in direct compares Kondo Neiro, 2a3 Audio Note Empress 2a3, Thoress 300b hybrid, Ayon 300b integrated (Rensaelaer's), Silvercore 833c, the various Kondos mentioned in the above post that I replied to. The one that sounded better than it in that compare, slightly, was the Kondo 211 Gakuon which is 50w as compared to 14w, so I am not sure if was the amp or the added grunt that made it sound better on those speakers.
I listen to it frequently on the Universums, where the 80w Ming Da has more grunt advantage, but the GM70 seems better on passages where grunt is not required.
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My Universums and my Amplifon SET 42 SE with GM70 are a match made in heaven
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