Ericcklau Posted February 14, 2020 Posted February 14, 2020 Hi all I would like to ask if I want to try out the Mono cartridge AT-MONO3LP, can it play with normal MM phono? Thank you ERIC FREQUENCY RESPONSE 20 - 20,000Hz VERTICAL TRACKING FORCE 1.5 to 2.5 g (standard 2.0 g) RECOMMENDED LOAD IMPEDANCE 400 - 47,000 ohms OUTPUT 1.2 mV (at 1 kHz, 5.0 cm/sec) STYLUS SHAPE Conical CANTILEVER Aluminum Pipe MOUNT Half-inch
dwbasement Posted February 14, 2020 Posted February 14, 2020 Lp is high output MC so MM phono is fine. 1
andyr Posted February 14, 2020 Posted February 14, 2020 (edited) 14 hours ago, Ericcklau said: Hi all I would like to ask if I want to try out the Mono cartridge AT-MONO3LP, can it play with normal MM phono? Thank you ERIC FREQUENCY RESPONSE 20 - 20,000Hz VERTICAL TRACKING FORCE 1.5 to 2.5 g (standard 2.0 g) RECOMMENDED LOAD IMPEDANCE 400 - 47,000 ohms OUTPUT 1.2 mV (at 1 kHz, 5.0 cm/sec) STYLUS SHAPE Conical CANTILEVER Aluminum Pipe MOUNT Half-inch 14 hours ago, dwbasement said: Lp is high output MC so MM phono is fine. Actually, with only 1.2mV output, the AT-MONO3LP will not suit a few MM phono stages - those that have lower gain than normal. The standard 40dB gain should be OK - although 42/43 dB would be better. However, I have seen phono stages with only 38dB. Also, seeing as the mfrs recommended load is given as: 400 - 47,000 ohms, you may find it sounds better when the load is less than the default 47K! Not many MM phono stages allow you to change load easily. What phono stage do you have, Eric? Andy Edited February 15, 2020 by andyr 1
Ericcklau Posted February 14, 2020 Author Posted February 14, 2020 33 minutes ago, andyr said: Actually, with only 1.2mV output, the AT-MONO3LP will not suit a few MM phono stages - those that have lower gain than normal. The standard 40dB gain should be OK - although 42/43 dB would be better. However, I have seen phono stages with only 38dB. Also, seeing as the mfrs recommended load is given as: 400 - 47,000 ohms, you may find it sounds better when the load is less than the default 47K! Not many MM phono stages allow you to change lead easily. What phono stage do you have, Eric? Andy Thank you Andy My amplifier does have some selection on the phono options. Should I stay in MC?
andyr Posted February 15, 2020 Posted February 15, 2020 2 hours ago, Ericcklau said: Thank you Andy My amplifier does have some selection on the phono options. Should I stay in MC? It depends, Eric! Basically, the only load options you can use are: 47K on 'Phono-2' (the MM input), or 47K on 'Phono-1' (the MC input). Do you have the specs of the sensitivity of these phono inputs. For instance, it might say something like "Phono-2 accepts 4mV" - in which case, your 1.2mV may be too low. Or if MM gain is specified as 42/43dB ... you should be fine. If Phono-1 "accepts 0.5mV" - then 1.2mV will probably not overload the MC input. However if the MC input accepts 0.2mV ... then 1.2mV may be too high a signal for it. You need to try both inputs - if you hear distortion on MC (or it's simply not loud enough on MM and you get too much hiss when you turn up the volume control) ... then you have an incompatibility with your integrated. Good luck! Andy 1
Ericcklau Posted February 15, 2020 Author Posted February 15, 2020 46 minutes ago, andyr said: It depends, Eric! Basically, the only load options you can use are: 47K on 'Phono-2' (the MM input), or 47K on 'Phono-1' (the MC input). Do you have the specs of the sensitivity of these phono inputs. For instance, it might say something like "Phono-2 accepts 4mV" - in which case, your 1.2mV may be too low. Or if MM gain is specified as 42/43dB ... you should be fine. If Phono-1 "accepts 0.5mV" - then 1.2mV will probably not overload the MC input. However if the MC input accepts 0.2mV ... then 1.2mV may be too high a signal for it. You need to try both inputs - if you hear distortion on MC (or it's simply not loud enough on MM and you get too much hiss when you turn up the volume control) ... then you have an incompatibility with your integrated. Good luck! Andy Hi Andy Just search my amp information below: It seems that the max input for MC is 7.5mV so may be I can use MC to play it right? Model Stereo integrated amplifier Effective output (0.03%, Aux) 20Hz to 20kHz: 140W + 140W (4Ω, Class 120W + 120W (8Ω, Class 30W + 30W (8Ω, Class A) 1kHz: 180W + 180W (4Ω, Class 130W + 130W (8Ω, Class B ) ) Total harmonic distortion (20Hz-20kHz) Phono1, 2 → Rec out (5V): 0.003% or less Phono MC → Rec out (3V): 0.03% or less Tuner, Aux → Pre out (3V): 0.005% or less Main in → SP out (60W, Class B, 8Ω 0.01% or less (15W, Class A, 8Ω): 0.005% or less Tuner → SP out (60W, Class B, 8Ω): 0.01% or less Power bandwidth (0.03%, 8Ω) Class B: 10Hz to 50kHz Class A: 10Hz to 70kHz Damping factor 45 or more (8Ω, 1kHz) Frequency characteristic Phono 1, 2 MC (RIAA deviation): 30Hz - 15kHz ± 0.2dB Tuner-Pre out: 5Hz-100kHz +0 -1dB Tuner-SP out (8Ω load): 5Hz-50kHz +0 -1dB Input sensitivity (rated) / impedance Phono 1: 2mV / 47kΩ, 68kΩ, 100kΩ Phono 2: 2mV / 47kΩ Phono MC: 50μV / 10Ω Tuner, Aux: 120mV / 50kΩ Main in: 1V / 50kΩ Maximum allowable input (1kHz, 0.02% distortion) Phono1, 2: 310mVr.ms Phono MC: 7.5mVr.ms Tuner, Aux: 20Vr.ms Output level / impedance Rec out: 120mV / 600Ω Pre out: 1V / 500Ω Tone control characteristics Bass (125Hz⇔500Hz): ± 10dB (20Hz) Treble (8kHz⇔2.5kHz): ± 10dB (20kHz) Subsonic filter 15Hz, 12dB / oct High filter 10Hz, 12dB / oct Noise level / SNR (IHF-A Network) Phono1, 2: 82dB Phono MC: 71dB (input 50Ω short) 68dB (input 0Ω short) Tuner, Aux, Tape: 100dB Main: 118dB Residual noise 0.07mV or less <Meter part> Instruction range -50dB to + 5dB response speed 100μs Return speed 0.95sec <Others> Power supply AC100V, 50Hz / 60Hz Rated power consumption 300W External dimensions Width 461x height 170x depth of 360mm weight 20kg
andyr Posted February 15, 2020 Posted February 15, 2020 Hi @Ericcklau, The below specs are somewhat confusing to me! All, I can suggest is that you try it out in all 3 of your phono inputs - yes, you have 3: Phono 1 Phono 2, and MC. The maximum allowable input for MC is an amazing 7.5mV - however, this comes (stupidly IMO) with a default loading of 10 ohms ... which is not in the recommended range for your mono cart. The maximum allowable input for the 2 MM inputs is an amazing 310mV - however, the input sensitivity is 2mV ... so your 1.2mV may be too low? So you need to try it out; can you compensate for the low input on Phono 1 and Phono 2 by turning up the volume control? Andy 1
dwbasement Posted February 15, 2020 Posted February 15, 2020 Looks like it is a Yamaha amp, I used to have a 700 something.... MM was fine with my ex AT MONO3 LP. 1
Ericcklau Posted February 15, 2020 Author Posted February 15, 2020 39 minutes ago, andyr said: Hi @Ericcklau, The below specs are somewhat confusing to me! All, I can suggest is that you try it out in all 3 of your phono inputs - yes, you have 3: Phono 1 Phono 2, and MC. The maximum allowable input for MC is an amazing 7.5mV - however, this comes (stupidly IMO) with a default loading of 10 ohms ... which is not in the recommended range for your mono cart. The maximum allowable input for the 2 MM inputs is an amazing 310mV - however, the input sensitivity is 2mV ... so your 1.2mV may be too low? So you need to try it out; can you compensate for the low input on Phono 1 and Phono 2 by turning up the volume control? Andy 16 minutes ago, dwbasement said: Looks like it is a Yamaha amp, I used to have a 700 something.... MM was fine with my ex AT MONO3 LP. Thank you guys
Guest gnnett Posted February 16, 2020 Posted February 16, 2020 An MC output is with 5cm/s groove modulation. Peak groove modulations, I understand, can be as high as 15 to 20cm/s. So a 1.2mV cart, might put out 3.6 to 4.8mV, leaving only 4dB of headroom for your MC input, which might be a bit small. So the phono 1&2 (MM) inputs would be a safer bet. However, your cartridge should still provide peaks from the 47K MM inputs to the line stage of 200 to 250mV to feed the 18dB line stage. A CD player with 2V output means max power out put from your amp is probably around -24dB +/-6dB. Using your MM input, volume setting might be in the order of 10dB higher compared to CD. So agree with Andy, suck it and see. Cheers Grant
Ericcklau Posted February 16, 2020 Author Posted February 16, 2020 5 minutes ago, gnnett said: An MC output is with 5cm/s groove modulation. Peak groove modulations, I understand, can be as high as 15 to 20cm/s. So a 1.2mV cart, might put out 3.6 to 4.8mV, leaving only 4dB of headroom for your MC input, which might be a bit small. So the phono 1&2 (MM) inputs would be a safer bet. However, your cartridge should still provide peaks from the 47K MM inputs to the line stage of 200 to 250mV to feed the 18dB line stage. A CD player with 2V output means max power out put from your amp is probably around -24dB +/-6dB. Using your MM input, volume setting might be in the order of 10dB higher compared to CD. So agree with Andy, suck it and see. Cheers Grant Thank you gnnett I will try it when the cartridge arrive. Thank you
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