| 回覆 (920): Test CD |
>you have a room mode at 30 Hz<
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No wonder the bass of limage's system is so impressive :-)
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thekong
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10-01-06
14:39:23
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| 回覆 (919): Test CD |
I tried the test disc last weekend and I was taken by surprise to find that the 30 Hz test tone was audibly much louder than 40, in my room I mean. Yet in playing music, it's just the reverse!
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good news! you have a room mode at 30 Hz^-^
in music, you don't get pure 30Hz signal. |
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drwkng
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10-01-06
14:34:36
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| 回覆 (918): Test CD |
King,
I tried the test disc last weekend and I was taken by surprise to find that the 30 Hz test tone was audibly much louder than 40, in my room I mean. Yet in playing music, it's just the reverse!
If it is doubling, then it should show itself in music as well, shouldn't it?
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limage
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10-01-06
14:24:41
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| 回覆 (917): Test CD |
| i've sent out my last test CD to ackcheng. is there anyone that i missed? |
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drwkng
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10-01-06
13:43:15
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funny
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10-01-03
23:56:14
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Vash
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10-01-03
01:28:52
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funny
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10-01-02
23:38:53
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funny
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10-01-02
23:36:39
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funny
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10-01-02
23:34:05
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accphoto
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10-01-02
01:01:18
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accphoto
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10-01-02
01:00:40
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accphoto
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10-01-02
00:59:42
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funny
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10-01-01
00:26:30
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limage
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10-01-01
00:03:07
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Vash
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09-12-27
01:30:36
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funny
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09-12-26
23:19:57
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accphoto
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09-12-26
14:21:23
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| 回覆 (903): DIY Merry Christmas |
accphoto,
That's a very nice build, even from an avid TT enthusiast like me - I appreciate all good DIY !!! Great job ! |
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daiwok
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09-12-26
10:54:08
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Vash
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09-12-26
08:20:48
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funny
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09-12-26
02:14:51
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accphoto
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09-12-25
12:30:15
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ghost
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09-12-25
08:40:25
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limage
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09-12-24
16:19:10
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8po
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09-12-23
23:37:54
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accphoto
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09-12-23
22:25:57
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| 回覆 (895): DIY laser head installation |
I have the service manual with me. To be exact, there are no less than 9 checks/adjustments to be carried out everytime the laser head is replaced:
Laser diode intensity check
Servo circuit adjustment
PLL frequency adjustment
Sled balance
Tracking balance
Focus balance
Focus offset
Focus gain
Tracking gain
In addition, you need test disc MCD-111, frequency counter, oscilloscope, sig gen and of course the standard multi-meter.
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limage
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09-12-23
18:51:46
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8po
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09-12-23
17:51:57
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| 回覆 (893): DIY laser head installation |
8po, correct. That's why Limage said, '.....It involved a complex alignment procedure together with a lot of test points to ensure that the new head was up to original spec..'
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Vash
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09-12-23
17:15:05
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| 回覆 (892): DIY laser head installation |
>>>The older Ensemble Dichrono CDT use TEAC/Wadia type mechanism
>>>That's it. Limage's Dichrono is the first generation but very good sound CDT that use the Teac/Esoteric type.
VRDS employ Sony pickup KSS-151 |
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8po
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09-12-23
15:53:09
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| 回覆 (891): DIY laser head installation |
>>>The older Ensemble Dichrono CDT use TEAC/Wadia type mechanism
That's it. Limage's Dichrono is the first generation but very good sound CDT that use the Teac/Esoteric type.
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Vash
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09-12-23
15:18:02
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F2aYeung
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09-12-23
15:08:46
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limage
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09-12-22
21:31:32
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| 回覆 (888): DIY laser head installation |
Sorry sir, "ONLY" replaceable for CDP/CDT with Philips CDPRO2 mechanism only.
If my memory serves me correctly, your Ensemble Dichrono CDT use Esoteric/Teac VRDS type mechanism, it's unique..... |
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Vash
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09-12-22
20:14:47
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limage
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09-12-22
16:04:39
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Vash
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09-12-22
15:44:58
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| 回覆 (885): DIY laser head installation |
I had the laser head of the Ensemble CD player replaced a few years ago. The replacement wasn't as simple as dissembling and assembling plus a few soldering points alone. It involved a complex alignment procedure together with a lot of test points to ensure that the new head was up to original spec. It was eventually left to the ex-distributor to work out for me at a few hundred dollars.
Naturally this Pro head ought to be much more complex. What instruments do you need for proper alignment?
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limage
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09-12-22
15:33:49
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accphoto
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09-12-22
14:06:01
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accphoto
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09-12-22
14:05:02
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accphoto
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09-12-14
19:02:13
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| 回覆 (881): DIY Music Room |
>>>Never try to put things in order, or else he won't be able to find anything he needs!
Seems this also applies on my current situation.
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Vash
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09-12-14
16:48:46
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