Dreadhead Posted December 2, 2008 Report Share Posted December 2, 2008 Well I just got confirmation from SPL USA today that they are going to send me a SPL Phonitor for me to do a review on Head-Case and the other site. Good stuff, all I need to do is give them a CC# as collateral. The only issue I see with this is the fact that the amp has a 9 ohm output impedance which it seems to me would cause some weird responses with low impedance phones (unless their impedance doesn't vary much). I probably won't get it for a couple weeks but hopefully I'll get it before Christmas. Quote Link to comment Share on other sites More sharing options...
Dusty Chalk Posted December 2, 2008 Report Share Posted December 2, 2008 DC area mini-meet. At your place. Quote Link to comment Share on other sites More sharing options...
n_maher Posted December 2, 2008 Report Share Posted December 2, 2008 The only issue I see with this is the fact that the amp has a 9 ohm output impedance which it seems to me would cause some weird responses with low impedance phones (unless their impedance doesn't vary much). I wouldn't worry about that. The Menace's output impedance is quite a bit higher than that and most who listened to it with Grados couldn't have cared less about what the output impedance measurement said the amp should perform like. Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted December 2, 2008 Author Report Share Posted December 2, 2008 DC area mini-meet. At your place. I'm sure we can work something out. Quote Link to comment Share on other sites More sharing options...
kirkwall Posted December 3, 2008 Report Share Posted December 3, 2008 Very interested to hear your thoughts on this. I was in a studio in September where one of these was in use and it has some pretty unique features, for mixing at any rate. I didn't get to listen through it but the engineers seemed impressed. Is that a balanced TRS jack? k Quote Link to comment Share on other sites More sharing options...
dsavitsk Posted December 4, 2008 Report Share Posted December 4, 2008 The only issue I see with this is the fact that the amp has a 9 ohm output impedance which it seems to me would cause some weird responses with low impedance phones It is probably not ideal, but it is also not necessarily a huge concern. My experience says that the lower the Z out the better for Grados, but anything up to about 8 or 9 ohms will have a decent damping factor, and assuming enough current will perform fine. You could, of course, use a stepdown transformer/autoformer of some sort to improve things. Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted December 4, 2008 Author Report Share Posted December 4, 2008 With regards to the output impedance thanks for the replies. If Nate and Justin don't think it'll be an issue so I assume it will not be KirkWall: The amp is SE. Unfortunately it's not balanced. If the review goes well I'm thinking of asking them if they have plans to make the cross feed and functions in a separate box and let people use their own headphone amps. Quote Link to comment Share on other sites More sharing options...
Blackmore Posted December 4, 2008 Report Share Posted December 4, 2008 KEES tried this one and going to buy to, I believe. He was very impressed by this airplane main board look like machine;D Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted February 11, 2009 Author Report Share Posted February 11, 2009 This bad boy is finally going to arrive today and it's mine for 2 weeks The supplier kept selling out of them and didn't have one to send. Quote Link to comment Share on other sites More sharing options...
Blackmore Posted February 11, 2009 Report Share Posted February 11, 2009 They should let you do the loan program, imo... Try some Grado's with it pls:cool: Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted February 12, 2009 Author Report Share Posted February 12, 2009 It has arrived Very interesting. The finish and the feel on the volume pots are amazing. Much more playing required. Unfortunately I also got a new phone today and that's swallowing some listening time. Quote Link to comment Share on other sites More sharing options...
Dusty Chalk Posted February 12, 2009 Report Share Posted February 12, 2009 So I presume this weekend is out since it's Valentine's Day on Saturday? Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted February 12, 2009 Author Report Share Posted February 12, 2009 So I presume this weekend is out since it's Valentine's Day on Saturday? PM Me we can likely do Sunday or Monday for a little while. Tues is our anniversary too. Quote Link to comment Share on other sites More sharing options...
grawk Posted February 12, 2009 Report Share Posted February 12, 2009 I might be up for a minimeet sunday, if colin finishes my denon Quote Link to comment Share on other sites More sharing options...
Dreadhead Posted February 13, 2009 Author Report Share Posted February 13, 2009 I think you guys will be impressed with the Phonitor. The crossfeed is impressive. I'm looking forward to the meet. Quote Link to comment Share on other sites More sharing options...
aRc Posted February 14, 2009 Report Share Posted February 14, 2009 It is in the category of "Impressive Amp"! Quote Link to comment Share on other sites More sharing options...
STEAXAUCE Posted December 26, 2010 Report Share Posted December 26, 2010 I saw an impedance graph for the UE11 a while back. It was all across the board. They list the impedance as 18 Ohms just because that's what it happens to be at 1KHz, but if I remember correctly the impedance dips much lower and goes much higher than that at certain frequencies. A 9 ohm output impedance would severely throw off the frequency response with a load like that, and if the impedance varies with the amplitude of the signal as well, it could cause harmonic distortion. Anyway, I'm no EE and don't want to sound like I know what I'm talking about, but that could be interesting to explore if you have any multi-way IEMs around. Quote Link to comment Share on other sites More sharing options...
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