The Hafler Trio is a conceptual and sound art collaboration between Andrew … Read Full Bio ↴The Hafler Trio is a conceptual and sound art collaboration between Andrew M. McKenzie, the only permanent member, and guest musicians. The project has seen the release of numerous albums and CDs in experimental musical styles ranging from electronica, cut-up, ambient, environmental soundscape, musique concrete, electro-acoustic, and audio-montage as cinema for the years from 1982 to present, each of which utilise graphic design and text for contextual juxtaposition with the recordings, as well as having a diverse but concrete philosophical and sometimes quasi-religious framework to place them in.
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A Sound & Colour Analogy
The Hafler Trio Lyrics
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The lyrics are frequently found in the comments by searching or by filtering for lyric videos
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Rich Paul
Hi,
I know it's been a while since you produced this video but it is an excellent tutorial, (as many here have said). However, I would just like to get confirmation that I understand the reasoning for a Bridge mono, (or Bridge mode), configuration.
I'd like to use an example of what I think I would use this configuration to accomplish, (In the example, I'll be using round numbers to simplify the scenario): I have an older model stereo amplifier, (Sansui, circa 1985), which is rated nominally at 150 watts per channel for 8 ohm speakers.
The amp has an Output selector to choose the "Speakers A" pair of speakers and a selection position to choose the "Speakers B" pair of speakers. It has a third position which permits driving the speakers A & B to be driven simultaneously, but when that position is selected, the amp's nominal output wattage is cut to 75 Watts per channel to all 4 speakers.
I have no sub-woofer connections or selection for the Sansui amp, but I want to drive a powered sub-woofer (rated at 150 watts/8 Ohms), that I took from a home theater, '5.1' system. The sub-woofer also offers RCA connections for the remaining "5.1" system speakers, which I will not be using, (I only intend to use the sub-woofer to add to the Sansui stereo system).
The speakers I have are Klipsch rated at 100 watts per channel 8-ohm speakers.
Because I have no connection to make from the amp to the woofer, I thought I may be able to use the Bridge mono configuration shown here. The woofer has a separate power source and I don't know if it would be best to use that source, or to treat the woofer as a 'passive' woofer in order to accomplish driving the woofer through the Sansui.
Would I be able to bridge the Sansui amp in the manner demonstrated in your video so it could drive the woofer through the L & R, speaker outputs of the "Speaker B" connection and leave the Klipsch connected to the L & R outputs of Speaker A selection?
That's one question, which I thought I'd ask but if not, then I thought to bridge the Sansui amp's left output speaker with the woofer and the left Klipsch speaker, and leave the right speaker output as it is for the right Klipsch speaker.
Of course, I could be way off and I know I likely have confused myself in attempting to do this using the bridge mono configuration. If I made any sense in my description, (and I know it's very possible that I didn't), could you confirm or correct me in that scenario?
Thank you,
Rich
Rich Paul
XLR!!! Yes, I forgot, but they were XLR, of course. I've forgotten so much since the '80s. When I do buy a high-end amp, I have every intention of buying the older equipment. The McIntosh amps I'm hoping to buy (one day), may cost 3 times more now than they did in 1985/87. But it's the same with the other high-end audio equipment from back then.
The Mac amp I wanted in the mid 80's cost about $2200 back then. These amps are still available from private sellers and in excellent condition. However, now I'd be lucky to find the same one for less than $4500 or even $5500. In addition, that's for one of the more 'modestly powered' Mac amps.
The high-powered Macs (circa 1982 to 1997), that I would just love to get my hands on, easily break $7K USD these days.
I think companies have always had the "up-sell mentality" and I can't blame them for that, but I agree that they seem to resort to that option in place of building a stronger consumer/company relationship. They seem to have no interest in building & maintaining a strong relationship with previous customers, which would then result in a faithful patronage.
Rich
(many thanks!)
GLB Productions
Yes Rich you'll rarely get a completely straight answer from anybody who's in the business of selling hifi equipment because it's in their interest to get you to buy their products rather than finding a solution based on your current setup - I get the same issues with customers who have problems with their sound reinforcement systems :) It's a shame that so few companies seem to be interested in building relationships rather than pushing product. The world we live in I suppose...
Hope you manage to find a suitable sub - it will need to have its own volume control so that you can balance its output with your main speakers, unless you can find some way of controlling the REC output level of the Sansui separately from the main output level.
The amp in the video is an Ecler XLA1600 - it's not a particularly good power amp ;) There are better ones from companies like Crown, QSC, Linear research and the like. The only issue you might encounter is that most modern power amplifiers are a class D design with a switching power supply. They sound good but the topology is not to the liking of all ;)
The 3-pin connectors are the inputs to the amplifier, not the speaker outputs - they are called XLR connectors.
Glad to be of help, let me know if you have any other questions :)
Rich Paul
Thank You! Yes, it certainly does help and kept me from doing anything wrong, (I probably wouldn't have tried anything without serious, repetitive, confirmation, throughout each step of the process anyway). In fact, I do know all the inputs and outputs of the Sansui are working.
I presently have one Tascam 32 Reel to Reel in the "Tape 1" connections and an Akai 4000S MKII in "Tape 2". They're both connected for Record and Playback but of course, I can disconnect one of the decks for the sake of a Sub-woofer.
I must thank you for answering me on this question! I don't know why, but I couldn't get a straight answer on the sub-woofer question in the many times I've tried to find out.
I've been trying to find out for months whenever I'd have some time to search. I even emailed some stereo equipment manufacturers. The majority of those emails were never answered. Those that did reply, were focusing their response on up-selling one of their 'sub-woofer ready' amps and consequently, would never answer the question.
Therefore, you've actually ended my search! I'm amazed that it's so simple a solution and yet, it seemed that the previous sources I had asked in my search, didn't know how to do this either.
In addition, the excellent YouTube video that you have here will be invaluable to me when I do finally buy a McIntosh amp & Pre-amp (in the not-to-distant future). I know that the Macs I have in mind do have all the same options as the amp you used in your demonstration.
At the moment, I've forgotten the make & model of that amp you used but it appeared to be an extremely good one. In fact, I'm surprised that I can't recall ever having heard of this unit. I live in the US, is it only sold/available overseas?.
The McIntosh amps & pre-amp I'm hoping to own one day, do have all the same selections, options, and those 3-pin speaker connections, (they look like DIN style connectors but I didn't have a close look at the male end of the connector). I know this reply is long but I'm truly that grateful for your help.
Thanks again!
Rich
redic
What a wonderfully concise and well presented tutorial. You are the perfect example of what a good teacher should be. Many thanks.
Kevin McCarthy
Thank you for your information and the patience with which you shared it. Invaluable for those of us who are still learning about all of this.
GLB Productions
You're most welcome Kevin.
Rozcel Abueg
I admire your safety precautions; power off, speakers disconnected BEFORE doing anything. You are a true safe pro! Thank you for your contribution to the ProAudio industry.
GLB Productions
Indeed, this is most important when changing modes on the power amp! Thanks for watching.
boss
If people shared resources and knowledge like this guy we would have a cure for cancer and the world would be at peace. God bless this guy
Suburban shaman
It's the idea of Jesus teaching people how to fish instead of just selling them the fish that he caught. Unfortunately our society has favored the selling of fish as opposed to the teaching of our own societal members how to fish and maybe even build a fishing rod.
Rosauro Nolasco
Yamaha p2700 model
Rosauro Nolasco
How 2 connect Bridge type 2 speaker
African Godman
@MindPower0 It's also called eating foods high in B17 and don't forget the power of Ginger and Turmeric.