SPL Phonitor

[Dreadhead]

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.

[Dusty Chalk]

DC area mini-meet. At your place.

[n_maher]

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.

[Dreadhead]

DC area mini-meet. At your place.

I'm sure we can work something out.

[kirkwall]

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

[dsavitsk]

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.

[Dreadhead]

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.

[Blackmore]

KEES tried this one and going to buy to, I believe. He was very impressed by this airplane main board look like machine;D

[Dreadhead]

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.

[Blackmore]

They should let you do the loan program, imo...

Try some Grado's with it pls:cool:

[Dreadhead]

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.

[Dusty Chalk]

So I presume this weekend is out since it's Valentine's Day on Saturday?

[Dreadhead]

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.

[grawk]

I might be up for a minimeet sunday, if colin finishes my denon

[Dreadhead]

I think you guys will be impressed with the Phonitor. The crossfeed is impressive. I'm looking forward to the meet.

[aRc]

It is in the category of "Impressive Amp"!

[STEAXAUCE]

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.