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Post by Deleted on Jul 24, 2016 16:02:37 GMT
Inside my LFD PA2M (SE) - the extreme circuit tuning is obvious with the multiple capacitor & resistor styles, use of obsolete components, wiring etc. Once LFD's stock of output MOSFETs for these amps are gone, then they'll be discontinued for good (they came back after a box of MOSFETs was found):  And the front:  The Exposure IV sounds great, but the LFD does (and should!) notch it up. How many watts/ch is this beastie ? |
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Post by yomanze on Jul 26, 2016 10:16:30 GMT
Inside my LFD PA2M (SE) - the extreme circuit tuning is obvious with the multiple capacitor & resistor styles, use of obsolete components, wiring etc. Once LFD's stock of output MOSFETs for these amps are gone, then they'll be discontinued for good (they came back after a box of MOSFETs was found): And the front: The Exposure IV sounds great, but the LFD does (and should!) notch it up. How many watts/ch is this beastie ? It's around 90W per channel into 8 Ohms.  |
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Post by speedysteve on Oct 29, 2016 20:20:13 GMT
I realised I had not contributed to this thread thus far. Here are the bass amps. The Crown is a 200wpc in to 8 ohm and used for the Exponential mid bass horns that use JBL H2220 15" drivers. These amps have great auto speed fans that in hifi use hardly spin up and are thus silent! The Cerwin Vega is beastly heavy and 400wpc in 8 ohms and used on the Eminence Kappa Pro LFII 15" drivers in the tapped horns.  Also 3 x Icon Audio EL84 amps. Tubes are Russian Military. These drive the mids (JBL 2482 compression drivers on 200Hz Tractrix horns), the upper mids (Vitavox S2 compression drivers on 450Hz Tractrix horns, and Raal Lazy Ribbon Tweeters.  |
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Post by John on Oct 29, 2016 21:01:31 GMT
A few changes since I last heard your system Steve
I imagine it gives a lot of control low down
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Post by speedysteve on Oct 30, 2016 10:12:16 GMT
A few changes since I last heard your system Steve I imagine it gives a lot of control low down Yes a lot more beef. The CV damping factor is great. |
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Post by Deleted on Oct 30, 2016 11:45:55 GMT
You Hi-Hi dude are so funny  |
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Post by Mr Whippy on Oct 31, 2016 0:04:53 GMT
Another one in the occasional series to show us your equipment using your own photography. Belles SA-100 Power Amp Aurorasound VIDA Phono Amp Just want something like this now, Martin - to jazz things up, a bit:  |
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Post by Deleted on Oct 31, 2016 4:36:59 GMT
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Post by MartinT on Oct 31, 2016 6:12:06 GMT
Big meters!! Pointless on a power amp, but always loved them.
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Post by Mr Whippy on Oct 31, 2016 10:14:08 GMT
Logic and a man's H-Fi... Doesn't always follow, Martin. Doesn't always follow.
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Post by pinkie on Oct 31, 2016 12:10:44 GMT
I saw your opening post requoted above, and realised that is a significant sea-change from your priorities with the Chord.
Is that Belles SA100 not a 100wpc amp without balanced inputs? I seem to recall lots of dynamic range calculations justifying a need for over 200wpc previously. And a definite preference for balanced connections. What happened?
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Post by MartinT on Oct 31, 2016 13:11:54 GMT
Indeed, and well spotted. The significant thing about my speakers, with their twin 11" woofers, is that they are a bastard 4 ohm load and require high peak current capability and high damping factor (low output impedance) for good bass control. In my previous room, the lack of control was causing some nasty room modes around 40Hz, hence my port stuffing experiments.
The Belles lacks the headline power spec, but it actually has twice the peak current capability of the Chord. The proof was in the loan and, after a week, it was obvious that the Belles was a clear winner in the bass control stakes as well as being more transparent overall. So the Chord is good but the Belles is better.
As for single-ended inputs, I would have preferred balanced inputs but c'est la vie. After trying a few interconnects I landed on the NVA TIS as sounding the best with the Belles so that's where I stand right now.
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Post by Deleted on Oct 31, 2016 15:43:52 GMT
I used to have power meters on my old New Acoustic Dimension 'Model 60'. Because i always listern at sensible levels the meters would hardly move.
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Post by pinkie on Nov 1, 2016 15:44:50 GMT
Indeed, and well spotted. The significant thing about my speakers, with their twin 11" woofers, is that they are a bastard 4 ohm load and require high peak current capability and high damping factor (low output impedance) for good bass control. In my previous room, the lack of control was causing some nasty room modes around 40Hz, hence my port stuffing experiments. The Belles lacks the headline power spec, but it actually has twice the peak current capability of the Chord. The proof was in the loan and, after a week, it was obvious that the Belles was a clear winner in the bass control stakes as well as being more transparent overall. So the Chord is good but the Belles is better. As for single-ended inputs, I would have preferred balanced inputs but c'est la vie. After trying a few interconnects I landed on the NVA TIS as sounding the best with the Belles so that's where I stand right now. Did you get the chance to try one of these Martin?  Now out of its packing materials and installed and in use |
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Post by Deleted on Nov 1, 2016 15:56:45 GMT
Isn't that more "finger mark" than Benchmark  |
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Post by pinkie on Nov 1, 2016 16:49:25 GMT
It's a fair cop.I'm not one for dusting.that's why the hifi is in a cupboard. And the power amp runs cool enough to hide in one
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Post by Sovereign on Nov 1, 2016 16:55:30 GMT
Isn't that more "finger mark" than Benchmark try having an amp with a glass front and a glass lid, oops!!! |
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Post by Deleted on Nov 1, 2016 17:30:19 GMT
They say the camera never lies, but boy does it exaggerate when it comes to finger marks!
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Post by MartinT on Nov 1, 2016 18:45:33 GMT
I had the same problem when photographing the Pass. It looked scratched in the photo, but in fact it was just dust!
No, I never had the chance to try the Benchmark but that can still come at a later date.
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Post by Deleted on Nov 1, 2016 19:26:03 GMT
Well call me sado but i move my Gear with white cotton gloves.
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