greenmachine

Connect it like that and try again if it works before assembling it: [attachmentid=548][attachmentid=549] Any standard solder and any thin cable should work - if you plan to use longer cables, use screened ones. Be careful not to overheat the capsules, it could damage the diaphragm and / or FET. If it works and you plan to assemble it as a T-mic again, use a greater distance between the elements, something like 6-7". Omnidirectional microphones need a certain distance in between to get an adequate stereo separation as they're non-directional.

I'd suggest to use the best quality you can afford, why make it worse than it needs to be right in the beginning? If you need to record 8-34 hours on one 1GB disc (2.5-10h for 80min/305MB discs), use Hi-LP - if you need 1.5-8 (0.5-2.5) hours, use Hi-SP - if up to 1.5 (0.5) hours are enough, use PCM. You can compress it after upload anytime.

SP is SP, no matter if recorded with LP capable equipment or not, there should be no compatibility issues whatsoever. The MDS-JE530 doesn't seem to be LP compliant by the way. http://www.google.de/search?hl=en&q=je530

It's not possible to upload via USB, the realtime re-recording method is described here: CLICK It's some kind of a pain in the butt, but better than nothing at all.

It's no longer the case.

I think a condenser for each channel, connected in series in between could be the solution for blocking DC voltage coming from the MD to enter the phantom power supply and causing conflicts. What do you think?

Must have been a defective battery, recent MD units are designed to interrupt the charging process automatically as soon as the battery is fully charged, regardless of the capacity used. For some reason it seems it didn't.

I see, you're talking about analysing waveforms, therefor PCM is the only way to go. But i thought the original question was if you can hear an audible difference...

I get about 16 hours with a 2300 mAh battery in Hi-SP mode, with 1350 mAh it should be at least 7 hours, more like 9+ hours if it is in good condition. It will usually save the system file automatically before shut-off if the battery is in good condition, but i wouldn't rely on it.

Although i haven't made any serious measurements, from my very subjective impression i'd say it's no worse. The internal preamp is of better quality than you might think, see here: http://forums.minidisc.org/index.php?showt...indpost&p=66612

Now that we are talking about hum from the power supply, i did a quick test: With the supplied switching power adaptor, there is a huge amount of hum/noise regardless if recording from line-in or mic-in. Grounding doesn't help at all. The supplied adaptor seems to be not suited when recording from an analog source. With a universal regulated transformer power adaptor (non-switching) there's way less hum when recording from mic-in, virtually insignificant if recording from line-in. When grounding it (outer ring of the power / headphone / mic-/line-in connector), you'll get rid of the hum completely.

You need to set it to rec pause (with a disc inserted) to get a signal. Recording is not necessary.

This is exactly the job of lossy codecs - to discard 'irrelevant' information. As long as you don't hear it, what's the use of any measurement? Your ears are the one and only judge in the end.

What you seem to want is a preamplifier / microphone combination. Either all-in-one or separate. Here are some all-in-one solutions from soundpro: http://www.soundprofessionals.com/cgi-bin/...tegory/165/mics ...and some external preamps: http://www.soundprofessionals.com/cgi-bin/...tegory/540/mics As you can see, it can get quite expensive if you have the need for an ext. preamp. Either using the 'old' equipment or upgrading to a HiMD unit with a built-in mic preamp should be considered alternatively. Or you could try a somewhat experimental method: Using one of your older units only as a preamp, while actually recording with the NH600, using a 3.5mm stereo male-to-male cable going from the headphone output of the 'preamp MD' to the NH600's line input.

Huh? How can you afford that? Do you use unpowered dynamic microphones or self-powered electrets? Why do you think the 'plug in power' / bias voltage would make your recordings noisy?

This is very good news indeed, i always supposed the internal preamp to be of very high quality. Thank you for confirming it in this meaningful test.

With the EQ on, you'll get compressed sound from 25 upwards.

You can perform exactly the same procedures with non-Hi-MD machines as soon as the material is 'uploaded' to your computer with the only difference of using a (de-)compressed source.

Not with my own mic recordings, but with prerecorded music - i couldn't hear a difference with Sony's Atrac Type R - it had been designed for transparency, even a lot of audiophiles failed to abx it. Quality should be very close to uncompressed. I don't know about Sharp's Atrac though. How do you transfer your recordings? The analog method could lower the quality additionally depending on the quality of your equipment.

Don't know if you're aware of it but you can propably use the standard remote to unpause / pause and change recording levels (at least i can with my nh700). What's so great about that particular remote?

Although they vary in quality, there's propably no perfectly screened microphone - cable - whatever additional equipment - cable - recorder chain, it's always advisible to keep a healthy distance to potential electromagnetic fields. In a test, the docking station of a cellular phone showed fatal influences. If you want to get seriously radiated, just stay all day long next to such a thing, it's propably not much different from heating yourself in a microwave oven at lowest setting.

Although supplying the microphones with a higher bias voltage is generally a good idea, a battery box wouldn't help with this particular problem at all, it could make it even worse because you're extending the cable. A microphone cable behaves much like an antenna, particularly if it's unsufficiently screened. The longer the cable, the worse the screening and the closer to an electromagnetic field, the more low frewuency buzz you'll get. The task of the condenser used in battery boxes is to prevent dc voltage to pass from/to the recorder. If an electromagnetic field is picked up through the microphone cable, it would pass through the battery box easily since it's an ac voltage.

Maybe the TOC area of the disk is damaged/dirty. Did you try a different disk?

no

It's a Net MD http://www.musiciansfriend.com/srs7/src=Se...base_pid/244184