I am nearly done acquiring all the parts for my high efficiency build. I have purchased the Precision Devices PD.186/2, the PDN.10MH25 and have two Altec 511B horns. I have not decided upon a compression driver yet. I can get a pair of 901 Altecs for $600 CDN used but I think that is too high of a price for a used driver that is "good" but not amazing.
My question is: does anyone know if the bolt layout of the 511B is standard and can I assume this is across the industry as a standard? I am considering the Faital HF10AK or the PD.CD1N
My question is: does anyone know if the bolt layout of the 511B is standard and can I assume this is across the industry as a standard? I am considering the Faital HF10AK or the PD.CD1N
Hello!
If you don't mind me asking, what did you pay for your GPA902's ? ( & when ? )
The reason for asking is that GPA ( sometime within the last 3-4 months instituted a massive, > 300% price increase for their alnico series woofers ).
So now I'm wondering how they've priced their ferrite-magnet based products.
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Personally, I prefer the soncs of aluminum diaphragms ( in compression drivers ) to the other typical choices offered ( of diaphragms made of plastic or titanium ).
Aluminum appear to be richer sounding ( especially when compared to Ti ) .
- Plastics come second to my ears.
Shane, in case you are not aware ( here in Canada ) one can buy quite a lot of good product from Q-Components .
The ubiquitous B&C de250 is available from them as well as the Radian 475pb ( which is arguably their version of the Altec 908 ).
Hi Earl. I bought the ferrite 902’s about a month or so ago. Bill charged me US$220.00 each.
I can’t believe how good they sound in my Valencia’s. The HF now sounds and measures very extended.
And, that annoying 511/811 midrange resonance/ringing/honk is virtually gone. I had always thought it was due to the horn casting, but I’ve been shown otherwise.
I can’t believe how good they sound in my Valencia’s. The HF now sounds and measures very extended.
And, that annoying 511/811 midrange resonance/ringing/honk is virtually gone. I had always thought it was due to the horn casting, but I’ve been shown otherwise.
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Ahh, thanks so much for that information.
Good Stuff!
( While I do slightly prefer my 288-8K's to the smaller 802/902 models >specifically in the bottom octave ) so many jst don't realize what they're forgoing by not trying out Altec/GPA stuff.
Which amp are you driving your Valencias with ?
Hi Earl, the system as it stands at the moment is actually JBL 4345’s with SUB1500’s and the HF drivers are TAD TD-2002 Be, all triamped.
But, at the moment, the Altecs are connected as the high pass section at 290 Hz!
The amps driving them are Mark Levinson No. 434. I use Bryston for the rest.
But, at the moment, the Altecs are connected as the high pass section at 290 Hz!
The amps driving them are Mark Levinson No. 434. I use Bryston for the rest.
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