Chapamantime
Novice Member
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- Jun 28, 2013
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Hi all,
I am new to AVForums and a bit of a novice when it comes to building a home audio systems but I am hoping I can explain this well enough to get some advice, so please bare with me.
A bit of context surrounding my issue:
I use my stereo setup mainly for DJing and do like to have the music fairly loud when I have friends over or for parties. The music I listen to is very bass driven, a lot of reggae/dub etc however that does not mean I don't appreciate the higher frequencies. As a result I bought 2 x Wharfedale Xarus 5000s a few years ago after reading a few forums on here and researching speakers for my requirements above. I also read on here about someone upgrading the 8 inch subs in the Xarus's which I have also done as the amp I am using does not have the facility for a stand alone sub woofer.
Sub replacement:
http://www.amazon.co.uk/8-Woofer-Wi...1_2?ie=UTF8&qid=1324048861&sr=8-2&tag=av0c-21
Im a bit of a bass fiend though (enjoy my reggae soundsystem nights) and I recently bought 2 Xarus's; I am yet to upgrade the subs in these but I will be doing so in the next month or so.
I run all 4 of them off my Technics SU-470 PXS cap and hadnt had any issues for a while but I am now getting a crackle through the right speakers on both A and B channels which intermittently clears up when I touch the volume dial or fiddle with the balance a little. The speakers are 6ohm but when the amp is powering both A and B sets of speakers its impedance (hope ive used that word in the right context) is 8-16ohms. I have done some research and seen that these amps suffer from soldering issues, they also feature a pair of thermistors in the volume control that are apparently very strange/rare for an amplifier? Im not sure if this information will help but I am trying to cover all aspects of the issue, plus I do not think I would be capable of a repair job if either of these suspects were the culprit.
I guess my first enquiry would be, does this seem like an issue caused by the set up I am using? Is the amp powerful enough or too weak to power these speakers?
If so can anyone recommend an adequate amp replacement for around the £200 mark?
Does this sound like it could be a circuitry issue or a problem with the thermistors?
Any light shed on this issue would be a massive help.
Amp Spec:
Power output: 45 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.005%
Damping factor: 60
Input sensitivity: 0.17mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 64dB (MC), 77dB (MM), 97dB (line)
Channel separation: 50dB (line)
Output: 150mV (line)
Speaker load impedance: 4Ω to 16Ω
Speaker Spec:
Crossover Frequency: 250Hz, 4.5kHz
Frequency Range: 30Hz - 24kHz
Midrange: 8" (200mm)
Nominal Impedence: 6 ohm
Recommended Amplifier: 25-250W
Sensitivity 1W@1M: 90dB
Thanks in advance!
I am new to AVForums and a bit of a novice when it comes to building a home audio systems but I am hoping I can explain this well enough to get some advice, so please bare with me.
A bit of context surrounding my issue:
I use my stereo setup mainly for DJing and do like to have the music fairly loud when I have friends over or for parties. The music I listen to is very bass driven, a lot of reggae/dub etc however that does not mean I don't appreciate the higher frequencies. As a result I bought 2 x Wharfedale Xarus 5000s a few years ago after reading a few forums on here and researching speakers for my requirements above. I also read on here about someone upgrading the 8 inch subs in the Xarus's which I have also done as the amp I am using does not have the facility for a stand alone sub woofer.
Sub replacement:
http://www.amazon.co.uk/8-Woofer-Wi...1_2?ie=UTF8&qid=1324048861&sr=8-2&tag=av0c-21
Im a bit of a bass fiend though (enjoy my reggae soundsystem nights) and I recently bought 2 Xarus's; I am yet to upgrade the subs in these but I will be doing so in the next month or so.
I run all 4 of them off my Technics SU-470 PXS cap and hadnt had any issues for a while but I am now getting a crackle through the right speakers on both A and B channels which intermittently clears up when I touch the volume dial or fiddle with the balance a little. The speakers are 6ohm but when the amp is powering both A and B sets of speakers its impedance (hope ive used that word in the right context) is 8-16ohms. I have done some research and seen that these amps suffer from soldering issues, they also feature a pair of thermistors in the volume control that are apparently very strange/rare for an amplifier? Im not sure if this information will help but I am trying to cover all aspects of the issue, plus I do not think I would be capable of a repair job if either of these suspects were the culprit.
I guess my first enquiry would be, does this seem like an issue caused by the set up I am using? Is the amp powerful enough or too weak to power these speakers?
If so can anyone recommend an adequate amp replacement for around the £200 mark?
Does this sound like it could be a circuitry issue or a problem with the thermistors?
Any light shed on this issue would be a massive help.
Amp Spec:
Power output: 45 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.005%
Damping factor: 60
Input sensitivity: 0.17mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 64dB (MC), 77dB (MM), 97dB (line)
Channel separation: 50dB (line)
Output: 150mV (line)
Speaker load impedance: 4Ω to 16Ω
Speaker Spec:
Crossover Frequency: 250Hz, 4.5kHz
Frequency Range: 30Hz - 24kHz
Midrange: 8" (200mm)
Nominal Impedence: 6 ohm
Recommended Amplifier: 25-250W
Sensitivity 1W@1M: 90dB
Thanks in advance!
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