MenloBob
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Posts posted by MenloBob
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Personally this is an ideal setup if you're into the tube sound. A few will say that having identical amps for the low/high on each side make the gain alignment easier. But no one running anything active should be doing so without REW and a calibrated measurement mic. It only takes a few passes with REW to get your gains perfectly aligned between top and bottom no matter what the amp combo. The horizontal config will give you the tube tone you're looking for without dropping a mint on an amp for the bottom end.
There's a number of members here who would be happy to help you get this dialed in.
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Very nice job.
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39 minutes ago, Audiophile53 said:
The Hypex PCS2.400 is bridged to 500 watts and running unbridged they are 400 watts each.
If you're ever in the mood to upgrade the newer Hypex Fusion 122 uses the ncore amp modules, which are the state of the art in Class D and rival all but the most expensive Class A amps.
Alternatively you could go all in on active with a pair of FA123s and tri amp each Khorn.
That being said your current setup is completely enviable and overkill.
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2 hours ago, babadono said:
Man this is an OLDdddddddddddd thread
I just read the whole thing before noticing the dates. The Rod Elliot page on Bi-Amping was a good read.. http://sound.whsites.net/bi-amp.htm
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On 5/2/2019 at 6:52 PM, Schu said:
I'd buy a five channel nCore Hypex amp... I keep watching the NAD M27, but the value is steadfast.
If I were retired or had more time at my disposal I'd start a company building custom Hypex amps. Maybe even a four channel with the hypex DSP built in and preconfigured for Jubes.
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15 minutes ago, jimjimbo said:
Ha! Well, perhaps partly that, but mostly your excellent observations on the Pilgrimage.
Well it was great meeting so many like minded people. And a few long lost brothers..
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@ClaudeJ1 can you share what exactly you had in mind for the Double Super Heresy design? Two Heresy sized cabs on top of each other? Or one tower sized cab with both drivers, possibly with a divider to partition each driver's back wave? I have acquired a pair of K510s with K691s and I'm ready to order 4 12s to start moving on this build.
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On 4/30/2019 at 5:51 PM, jimjimbo said:
Yes kiddies, your resident Jubilee hater, (I don't care what they sound like, they're damn ugly......) is I think, finally making the mental turnaround to: (I don't care how ugly they are, they sound damn good, if not actually miraculous....) Not withstanding the somewhat "interesting" selection of music to demo them.....this would be my third year hearing them in the Hope demo room, and I guess I must be thick for it to take this long..... A new friend of mine that I met in Hope and had some great conversation with out by the pool at the Super 8, suggested that next year perhaps we should have an auction for listening time (perhaps with Roy) in the Jube demo room. Our music choice of course.....I think that's a splendid idea.
@richieb, there you go....You're welcome. Hope you've had a nice trip.
@Chief bonehead You know I love you
What a great idea.. It must have been the bourbon..
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1 hour ago, Emile said:
Got a new knee and finally (6 weeks
) am starting to walk without a walker or cane
Let me know when you’re ready and I’m happy to help you get this working. The K510 is a magic piece of kit for the size.
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On 3/14/2019 at 3:05 PM, Emile said:
OK; ordered the Crown XLS 2502
(actually awaiting approval of my offer ... was OK'd last week ). If I do not like it, I've got @babadono's address and number
Add-on ... ordered and paid
So where are you at with this Emile? I have my 510s now and have them sounding great with a minidsp OpenDRC 2x8 as the crossover and eq. It’s pretty apparent to me that your problems are entirely gain related with the bottom end minidsp. I’ve got a couple of suggestions.
1. Upgrade to the minidsp 2x4HD. It’s better in so many ways, but most importantly it has 2V analog input and output. You’re gonna want the extra output voltage to drive your pro amp. Also the HD has more SNR.
2. Get an attenuator to balance the output voltage from your preamp into the dsp. I’m using this one: https://www.amazon.com/dp/B07GRLV7XG. There are also a few cheaper options, but make sure you pick one with a high quality potentiometer.
3. Disconnect the outputs of the dsp and connect the attenuator between your preamp and the dsp input. Open the dsp control program and connect with the usb. Set the input gain to zero. Play a loud rock cd that has pretty uniform loudness (or input a 0db pink noise signal if you have that capability.) Set your preamp volume at 75%. Adjust the attenuator knob until the input meter display on the dsp control program is peaking at 0db. Now you have the output voltage range from 0 to 3/4 turn on your pre mapped to the unclipped input range of your dsp.
4. Once the input gain is right you can adjust the gains on each of your amps to balance the output between the top and bottom. Rew and your calibration mic can help you get this exact.
5. There’s a PDF file on klipsch.com for the KP-904 that has Roy’s suggested eq settings for the 510. These are pretty simple to input into the dsp.
This should get you really close to the sound you’re expecting based on your passive 904s. Further tweaking can be accomplished by following Chris A’s instructions with REW.
Let me know how else I can help.
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How low do these go? Do you have a high pass filter to protect the Eminence from over excursion? I’m thinking of doing something similar with K510 horns on the top end.
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Klipsch looks to be moving to all Chromecast as well. DTS didn’t deliver half of what they promised in PlayFi.
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5 minutes ago, jimjimbo said:
Absolutely....Bring some V8 with you.
I will bring as much of this as will fit in my luggage..
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Pickle Bloody marys?
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1 minute ago, Coytee said:
We never got to hear the LP for the first time"
Because the final mix of the album took all ten hands of the band plus Alan Parsons to control all of the track levels from the multitrack tapes. Nick Mason recalled it as more complicated than playing any of the songs.
I would have loved to be a fly on the wall for that one.
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Chromecast audio does this well. You can still find them for a bit of a premium on FleaBay.
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They played a show for David Gilmour's 60th birthday. David said it was interesting as he'd never seen a Floyd show from the audience.
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3 hours ago, AHall said:
Additionally my second xilica(2040) was only $400 in like new condition.
FleaBay? I haven't had any luck finding cheap xilicas..
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Also switching to Tidal from Spotify is the cheapest upgrade you can make and should have substantial improvements in your setup.
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Anyone play with the newish nCore based DSP amps from Hypex? Looks like you could go active 2 or 3 way with nCore 500w channels on the big drivers for not that much more than a Xilica 4x8. Power supply, amps and DSP all in one unit. I might order the 2x125 FA122 just to see how much noise comes out of my K510s. Worst case scenario it would make a great plate amp for a small sub.
https://www.diyclassd.com/plate-amplifiers/
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K510 horn only. I can dream, right?
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1 hour ago, Cinema_head said:
So I found some stock 1978 La Scalas. First impressions fantastic speakers!
Nice find!
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18 minutes ago, Cinema_head said:
I had 904s never had the 402s.
In that case this might a good path forward. But you would need a DSP unit to do it right.
My 510s arrived last night and I just got them setup with a pair of old bookshelves until I retrieve my Heresies from storage.
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What 18" drivers are you using?
) am star
). If I do not like it, I've got 
K 510 size w/o flanges
in Technical/Restorations
Posted
Also there's a DWG file you can download off of the Klipsch site that you can take measurements off of with a CAD viewer. One of the downloads for the 904 HF I think.