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Post by tasteliketape on Mar 6, 2024 3:36:06 GMT -6
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Post by kcatthedog on Mar 6, 2024 4:19:26 GMT -6
Thx.
What is the significance of the difference ohmages?
Power of amp required to drive them ?
Is lower or higher ohms better: how ?
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Post by wendelgee2 on Mar 6, 2024 5:46:33 GMT -6
I'd be curious to know if they are B Stock for cosmetic or performance reasons. Maybe frequency response tested too far out of spec?
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Post by hadaja on Mar 6, 2024 6:16:58 GMT -6
USA only it seems.
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Post by tasteliketape on Mar 6, 2024 6:36:59 GMT -6
I'd be curious to know if they are B Stock for cosmetic or performance reasons. Maybe frequency response tested too far out of spec? WHAT IS B-STOCK? B-Stock products are refurbished headphones and microphones, for example from returned goods or exhibits at trade shows. The products have the same product features and functions as new products (A-Stock) and are offered at low prices in the beyerdynamic Outlet. There may be small cosmetic defects on the product or its packaging, but you can be sure that B-Stock products function technically flawlessly. Shipping costs for your country can be found here. The return costs must be borne by the buyer. |
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Post by trappist on Mar 6, 2024 10:39:30 GMT -6
I especially like to buy B-Stock items from manufacturers websites. I have purchased from Beyerdynamic, Apogee, Ultrasone and many others. They all offer a return policy.
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Post by trappist on Mar 6, 2024 11:16:14 GMT -6
Thx. What is the significance of the difference ohmages? Power of amp required to drive them ? Is lower or higher ohms better: how ? The higher the ohm rating, the more current and power the headphones will need to drive them. ie. 16 ohms to 32 ohms low-impedance is okay for iphone or laptop for good sound. Higher than 32 ohms to 100 ohms is mid-impedance requiring more voltage to drive them. They will sound good on devices like iPhone or a laptop but will not sound as loud. High-impedance of 100 ohms or more need a quality audio interface with a dedicated headphone amp or a standalone headphone amp. I drive my 250 ohms DT 1770 PRO with a Little Labs Monotor and hear details that I don’t hear with my Neumann NDH20, ATH M50x or Shure SRH1540 |
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ericn
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Balance Engineer
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Post by ericn on Mar 6, 2024 11:26:20 GMT -6
Thx. What is the significance of the difference ohmages? Power of amp required to drive them ? Is lower or higher ohms better: how ? The higher the ohm rating, the more current and power the headphones will need to drive them. ie. 16 ohms to 32 ohms low-impedance is okay for iphone or laptop for good sound. Higher than 32 ohms to 100 ohms is mid-impedance requiring more voltage to drive them. They will sound good on devices like iPhone or a laptop but will not sound as loud. High-impedance of 100 ohms or more need a quality audio interface with a dedicated headphone amp or a standalone headphone amp. I drive my 250 ohms DT 1770 PRO with a Little Labs Monotor and hear details that I don’t hear with my Neumann NDH20, ATH M50x or Shure SRH1540 It’s not really about “ power” it’s about matching the appropriate impendance of output to input. While yes you will see an apparent increase in SPL with lower impendance phones you also will find many headphone amps shutting down if you try to power say 4 pairs of low impendance phones. |
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Post by trappist on Mar 6, 2024 15:13:20 GMT -6
It’s not really about “ power” it’s about matching the appropriate impendance of output to input. While yes you will see an apparent increase in SPL with lower impendance phones you also will find many headphone amps shutting down if you try to power say 4 pairs of low impendance phones. That is absolutely true as I power 4 sets of tracking phones. My four ATH M50X’s are rated 38 ohms each. If I substitute my 250 ohms Beyer 1770 Pro in one of the inputs, volume is significantly diminished using either my PreSonus HP-4 Headphone amp or my Little Labs Monotor for all the headphones. I would need a separate Headphone Amp to power the 1770. I don’t do that because I want to hear the same output as everyone else tracking as I play. I use the 1770 for solo tracking. |
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Post by dok on Mar 6, 2024 15:52:41 GMT -6
great deal on that stereo set of MC930s, someone should snag that for sure!
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Post by gravesnumber9 on Mar 6, 2024 16:45:58 GMT -6
Anybody know anything about the TG D71 boundary mic? I don't actually own a boundary mic, I usually just use a 57 pressed against a wall or place on the floor.
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ericn
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Post by ericn on Mar 6, 2024 17:06:34 GMT -6
Anybody know anything about the TG D71 boundary mic? I don't actually own a boundary mic, I usually just use a 57 pressed against a wall or place on the floor. The Beyerdynamic boundary’s have never sucked, the problem has always been the Crown PZM & PCC series dominated the price point both new and used. |
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Post by gravesnumber9 on Mar 6, 2024 17:18:10 GMT -6
Anybody know anything about the TG D71 boundary mic? I don't actually own a boundary mic, I usually just use a 57 pressed against a wall or place on the floor. The Beyerdynamic boundary’s have never sucked, the problem has always been the Crown PZM & PCC series dominated the price point both new and used. Crown's are going for $500 these days. $165 for the Beyer B-stock is quite the gap if they're comparable. |
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ericn
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Post by ericn on Mar 6, 2024 17:24:17 GMT -6
The Beyerdynamic boundary’s have never sucked, the problem has always been the Crown PZM & PCC series dominated the price point both new and used. Crown's are going for $500 these days. $165 for the Beyer B-stock is quite the gap if they're comparable. Which Crown? |
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Post by teejay on Mar 6, 2024 17:50:51 GMT -6
It’s not really about “ power” it’s about matching the appropriate impendance of output to input. While yes you will see an apparent increase in SPL with lower impendance phones you also will find many headphone amps shutting down if you try to power say 4 pairs of low impendance phones. That is absolutely true as I power 4 sets of tracking phones. My four ATH M50X’s are rated 38 ohms each. If I substitute my 250 ohms Beyer 1770 Pro in one of the inputs, volume is significantly diminished using either my PreSonus HP-4 Headphone amp or my Little Labs Monotor for all the headphones. I would need a separate Headphone Amp to power the 1770. I don’t do that because I want to hear the same output as everyone else tracking as I play. I use the 1770 for solo tracking. So maybe this has been an issue for me tracking/quasi-mixing with my ATH-M50's. My RME Multiface II has an output impedance of 30 ohms, so if I go with the oft recommended 1/8 ratio I should have at least 240 ohms headphones, not the 38 on the ATH. Sometimes I use my Behringer Monitor2USB, but have no idea what the output ohms is on those headphone jacks. |
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Post by gravesnumber9 on Mar 6, 2024 18:14:46 GMT -6
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ericn
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Post by ericn on Mar 6, 2024 19:12:04 GMT -6
Stupid Samsung, the Soundgrabber ( battery only) and the PZM 180( phantom powered) were pretty good but a little fragile. If memory serves me the original SASS used 180’s. I have always had a handful of PCC160’s in the kit. You can always find one cheap without the cable. |
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Post by trappist on Mar 6, 2024 19:45:29 GMT -6
So maybe this has been an issue for me tracking/quasi-mixing with my ATH-M50's. My RME Multiface II has an output impedance of 30 ohms, so if I go with the oft recommended 1/8 ratio I should have at least 240 ohms headphones, not the 38 on the ATH. Sometimes I use my Behringer Monitor2USB, but have no idea what the output ohms is on those headphone jacks. Someone correct me if I am wrong or misunderstand, I don’t run 4 sets of headphones out one output jack. I run 4 sets of headphones out a 4 input Headphone amp. My PreSonus HP4 for example features 4 separate 130 mW per channel output, separate level control and its own 16VAC power supply. In my case, I run the headphone amp out the monitor outputs on my 88M audio interface when tracking. I only use the 88M headphone output for Mixing. The 88M is rated 150 ohms output load on headphone output so the maximum I plug in are my 150 ohms Neumann NDH 20. It might drive four ATH-M50X @ 38ohms per headphone. I haven’t tried. |
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ericn
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Post by ericn on Mar 6, 2024 20:52:21 GMT -6
So maybe this has been an issue for me tracking/quasi-mixing with my ATH-M50's. My RME Multiface II has an output impedance of 30 ohms, so if I go with the oft recommended 1/8 ratio I should have at least 240 ohms headphones, not the 38 on the ATH. Sometimes I use my Behringer Monitor2USB, but have no idea what the output ohms is on those headphone jacks. Someone correct me if I am wrong or misunderstand, I don’t run 4 sets of headphones out one output jack. I run 4 sets of headphones out a 4 input Headphone amp. My PreSonus HP4 for example features 4 separate 130 mW per channel output, separate level control and its own 16VAC power supply. In my case, I run the headphone amp out the monitor outputs on my 88M audio interface when tracking. I only use the 88M headphone output for Mixing. The 88M is rated 150 ohms output load on headphone output so the maximum I plug in are my 150 ohms Neumann NDH 20. It might drive four ATH-M50X @ 38ohms per headphone. I haven’t tried. I don’t know of any headphone amps that don’t have inputs for each individual output that functionally any different than a a single amp with a bunch of “ Y” cables with L pads. This why when ever I have had a tracking space I have had a bunch of the 1/2 rack Symetrix headphone amps, one for each set of phones. Plenty of power for any headphone . |
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Post by jacobamerritt on Mar 7, 2024 2:24:04 GMT -6
great deal on that stereo set of MC930s, someone should snag that for sure! Why did you have to point this out? I couldn’t resist. Ha! Also picked up a D35. No brainer at $55. |
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Post by dok on Mar 7, 2024 10:54:33 GMT -6
great deal on that stereo set of MC930s, someone should snag that for sure! Why did you have to point this out? I couldn’t resist. Ha! Also picked up a D35. No brainer at $55. How am I supposed to resist buying them if they're not sold out!? |
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