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Iconic 604-8G crossovers-

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www.records

Quality over Quantity
Anyone have any experience with the Iconic crossoversmformthe 604-8g drivers? I am using the original xovers. Also, any other x-overs that I should consider? I know about the Mastering Labs, but they seem impossible to find.

If you have any knowledge about x-over options for these drivers I would love your help.
 
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Thanks for the link. I have been aware of the Markwardt x-overs but have never heard them. I take it they basically make the same improvements as the claims stated by Iconic? I need to give bfish a call and see if I can recruit his help. Money is pretty tight, so I want to do this right the first time.
 
Confession, i have most of the parts to build the Markwarts, but i tried active bi-amping on my 604-8G's and haven't revisited a passive network since. I plan to follow thru with JM's design at some point based on the positive feedback i've gotten from others who have built and use them. JM is also easy to contact and generous with help, sometimes can be found at the Altec User's Board as well.
 
Thanks again bowtie, I haven't been to Altec Users board for a long time, that is where I met bfish. I need to revisit. I have a call in to Brad and hope to hear back shortly. I have very little comprehension of electrical things. I am gonna need to recruit some help.
 
Not to derail my own thread, but I wonder how many AK members use these 604's? I know myself, bowtie, mhardy and Billfort. That makes 4, any others?
 
Brad's a very knowledgeable and sensible fella i think he likes fishin' too, please pass my best regards on to him. You're certainly on the right tracks for success, good luck with your project.
 
I've got a set of 604B and a set of 604E. I've built the JM crossovers and actually just built some 604 Stonehenge III Cabinets for the 604B. Will post pictures tomorrow.
 
bowtie427ss said:
Brad's a very knowledgeable and sensible fella i think he likes fishin' too, please pass my best regards on to him. You're certainly on the right tracks for success, good luck with your project.
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I agree, but I do remember when he was at my place and was talking about cutting mounting holes in the walls of my listening room to use the garage as a speaker cabinet. I didn't think my wife would understand.:D

Brad is smart and good people and has been a very good friend. When he calls me back I will tell him you said hi.
 
mvandyke said:
I've got a set of 604B and a set of 604E. I've built the JM crossovers and actually just built some 604 Stonehenge III Cabinets for the 604B. Will post pictures tomorrow.
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I look forward to seeing your pics. Would you mind posting one of your MW x-over? What did you notice in sound with the MW vs the originals?
 
I've got 604-8Ks myself with the Mantaray horns. Reconed via GPA early this year. Using the 604-8K crossover systems for them at that.

Its a nice setup. I sold my Behringer electronic crossover some time back so no option to bi-amp. Frankly, with their efficiency, I can't imagine why I'd need to do that anyway.

Cheers,

David
 
dshoaf said:
I've got 604-8Ks myself with the Mantaray horns. Reconed via GPA early this year. Using the 604-8K crossover systems for them at that.

Its a nice setup. I sold my Behringer electronic crossover some time back so no option to bi-amp. Frankly, with their efficiency, I can't imagine why I'd need to do that anyway.

Cheers,

David
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Sounds like a great setup David. Are your crossovers the regular ones or what they call the Supercrossovers?
 
Also have 604K's.. with the matching crossovers, upgraded with Audio theta caps and Mills resistors. What I've gathered Markwarts crossovers are based on and simplified 604G/K crossovers.

I have a BBE crossover just having got around to rewiring my speakers to bi-amp. Didn't have the best results last time.

Been looking for a DBX Driverack PA, to do some EQ/Crossover, but system improvements have taken a back seat to getting a new place to live. (with what I hope is a better listening room).
 
Mike, I can't find prices for the Iconic crossovers. Do you happen to remember their cost? Love your system, truly top shelf.
 
www.records said:
Not to derail my own thread, but I wonder how many AK members use these 604's? I know myself, bowtie, mhardy and Billfort. That makes 4, any others?
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I've got a pair of 604-8G currently in service, and a pair of UREI 604-8Gs from dshoaf that are awaiting a crossover dechipering and rewiring...:thmbsp:
 
bowtie427ss said:
Confession, i have most of the parts to build the Markwarts, but i tried active bi-amping on my 604-8G's and haven't revisited a passive network since...
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Thanks man, salute to you too.
My secretary's battery died. Late to the party. I sent him the Elliot article on biamping to make the sale. I've got the gear for dubyadot to try it ('90s Altec XO & EQ).

It wouldn't have mattered if www had put his 604s in-wall with a garage IB since the house got ground to shreds in a tornado shortly after anyway. At least he'd have had a chance to hear a good IB. :D

Edit; On second thought, his 604s only survived because of the HD boxes they were in. Guess it's a good thing he resisted.
 
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www.records said:
Sounds like a great setup David. Are your crossovers the regular ones or what they call the Supercrossovers?
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Never heard of a Super version. Got any info on them? I've got the regular/stock Altec. I've updated the caps as PunkerX has done, though, given the age.

Now, those crossovers that Analog Addict has are something to behold. Bust 'em out sometime, AA, and let these guys see what a _real_ 604 crossover for industrial use should look like!

Cheers,

David
 
dshoaf said:
Now, those crossovers that Analog Addict has are something to behold. Bust 'em out sometime, AA, and let these guys see what a _real_ 604 crossover for industrial use should look like!

Cheers,

David
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I'll have to open 'em up and take some pix. As with many project of unknown complexity, I tend to procrastinate when facing the unknown....:sigh:
 
Bfish (Brad) I really enjoyed our visit last night. It had been too long. I am excited to hear the change, it might be just what I am looking for.

Ds, Iconic apparently has 2 crossovers for the 604's. I emailed with Steve at Iconic and he called one the regular and the other SuperCrossover. In the email he indicated there is little audible difference between the two. They don't show prices on their website and I had inquired in my email about price, but that question didn't get answered. Not much help, but it's all I have so far. I emailed again about prices, but no reply yet.
 
I have the 604-8H's bi-amped with tubes and a BBE DS-26, never give much thought to crossovers anymore with this combo. I do have the new GPA 604 crossovers, I'd have to roll tubes to tame the treble with them, kind of bright and no L-pads, Dave.

AKfest 2009 604-8H
 
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