Yes the 300Bs are sounding very nice with my new TL speakers. Posting some images of both.
300 B Amplifier and Advanced TL
- Thread starter Hari Iyer
- Start date
Yes the 300Bs are sounding very nice with my new TL speakers. Posting some images of both.
heliumflight
Well-Known Member
Re: Listening impressions to bhagwan's set up - part II [July, 2014]
The 300B are majestic. I heard a Audio note integrated amp and really liked the sound. Hari Sir which preamp and source do you use with TL?
The 300B are majestic. I heard a Audio note integrated amp and really liked the sound. Hari Sir which preamp and source do you use with TL?
Re: Listening impressions to bhagwan's set up - part II [July, 2014]
Thank you sir.
I am not using any pre-amp with the 300B and do not intent to do so. Reason the power amps do have a volume control pot which is useful to adjust the input level. More over adding one more amplification source could add more distortion to the signal source.
I am using a Marantz CD5400 CD player and a Dual 521 TT as the source.
My CD player has a decent 2volts output. Also the phono stage gives a decent 150mv of sensitivity. I am using my vintage Sony amplifier as a dummy pre-amplifier for connecting all my source and using the tape loop of this amp to connect to the Tubes. This way i can prevent the amplification of the pre-amp and still have all my inputs selected by the Sony. I am using the phono stage of the Sony with the Dual TT
I last week modified the opamp of my Marantz CD player with significant improvement in midrange, imaging and detail. Will post the details in a separate post.
Images of the CD Player and the Sony Integrated Amplifier:
Thank you sir.
I am not using any pre-amp with the 300B and do not intent to do so. Reason the power amps do have a volume control pot which is useful to adjust the input level. More over adding one more amplification source could add more distortion to the signal source.
I am using a Marantz CD5400 CD player and a Dual 521 TT as the source.
My CD player has a decent 2volts output. Also the phono stage gives a decent 150mv of sensitivity. I am using my vintage Sony amplifier as a dummy pre-amplifier for connecting all my source and using the tape loop of this amp to connect to the Tubes. This way i can prevent the amplification of the pre-amp and still have all my inputs selected by the Sony. I am using the phono stage of the Sony with the Dual TT
I last week modified the opamp of my Marantz CD player with significant improvement in midrange, imaging and detail. Will post the details in a separate post.
Images of the CD Player and the Sony Integrated Amplifier:
Last edited:
Thad E Ginathom
Well-Known Member
Re: Listening impressions to bhagwan's set up - part II [July, 2014]
What is the Sony amp [?] in your pic? It reminds me of my first actually-owned-by-me stereo amplifier.
What is the Sony amp [?] in your pic? It reminds me of my first actually-owned-by-me stereo amplifier.
Re: Listening impressions to bhagwan's set up - part II [July, 2014]
Sony Amp is TA-AX44 - Integrated Stereo Amplifier
Thad E Ginathom
Well-Known Member
I have found your thread on the amplifier now: thank you for happy memories 
Measured impedance response of the advance TL. The impedance at resonance is almost flat allowing better low frequency control and damping. The tuning Q of the line helps to lower the impedance at resonance significantly there by allowing constant loading to the amplifier and better power transfer.
I have seen on the Analog Audio Labs site that the 300B can be used as an integrated amp. How does that happen? Have you tried it in that form?
kapvin
Well-Known Member
Measured impedance response of the advance TL. The impedance at resonance is almost flat allowing better low frequency control and damping. The tuning Q of the line helps to lower the impedance at resonance significantly there by allowing constant loading to the amplifier and better power transfer.
Hari, 1/3 octave smoothing on a impedance curve makes it a bit less than useful.
the impedance and phase curves should have no smoothing.
best wishes
Yes, I am using it without any pre-amp currently. As my cdp has a output voltage of around 2v can use it directly with the 300B as the 300B has a volume control knob at its inputs. More over not using any amplification after the cdp helps to reduce phase, IM and Harmonic distortion particularly important when the pre-amp is a entry level or a mid-level type.
Denom may come this weekend if the rain gods decide here. Its raining cats and dogs in Mumbai this entire week, and hence not planning any formal meet as most of them cannot make it.
I am not able to get the phase curves proper with the impedance jig as i do not have an external sound card. Here are the images without any smoothing. Please analyze them for me. Will post more images after your feedback.
Thanks,
This is what I finally settled for
Crossover frequency - 1700Hz - Distance between woofer & Tweeter center- 7.5"
I am quite satisfied and happy with the sound stage and presentation of this speaker now after many iterations of simulation & tweaking. The only final tweak i will be doing is replacing all the WW resistors with Metal Oxide, non-polar capacitors with polyester for reducing component tolerance. Inductors will still be the same as i do not find any advantage going for a lower guage as i have used the wire resistance to actually manage the Q of the system.
I will be measuring this speaker later this week and will post the measured response in my room using the single channel method.
Crossover frequency - 1700Hz - Distance between woofer & Tweeter center- 7.5"
I am quite satisfied and happy with the sound stage and presentation of this speaker now after many iterations of simulation & tweaking. The only final tweak i will be doing is replacing all the WW resistors with Metal Oxide, non-polar capacitors with polyester for reducing component tolerance. Inductors will still be the same as i do not find any advantage going for a lower guage as i have used the wire resistance to actually manage the Q of the system.
I will be measuring this speaker later this week and will post the measured response in my room using the single channel method.
After 2 weeks of listening and measurement, I am happy with the outcome of the various simulations and tweaks. I have decided for an upgrade of the cross-over components. I will replace all non-polar with polyester film type, all ww resistors with MOR type. Inductos will still remain the same as i need the inductor resistance for managing the Q of the system.
Also will repolish the enclosure with a lighter shade, add spikes supplied by our FM "Magma" and will include my 'Emblem' to make the speaker look complete. Am expecting all this to be ready by end of month or probably first week of Feb. It took more around 10 months to get this project complete from concept to finish stage and at the end kept me satisfied with the outcome.
Also will repolish the enclosure with a lighter shade, add spikes supplied by our FM "Magma" and will include my 'Emblem' to make the speaker look complete. Am expecting all this to be ready by end of month or probably first week of Feb. It took more around 10 months to get this project complete from concept to finish stage and at the end kept me satisfied with the outcome.
neo
Active Member
Fantastic! you should consider taking part in the what hifi show,afaik coming up end of jan.
It will be great to hear some indian hifi gear.
All the best
Cheers
It will be great to hear some indian hifi gear.
All the best
Cheers
soulforged
Well-Known Member
Why not go for crowd-funding via the HFV junta :yahoo:
Why not - but will have to look for a sponsorer for this.
This kept me amused the entire night.:clapping:
Get the Wharfedale EVO 4.2 3-Way Standmount Speakers at a Special Offer Price.
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